Change the NSS and NSPR source tree to the new directory structure to be

mozilla/nsprpub/pr/src/md/unix/unix.c

Index: mozilla/nsprpub/pr/src/md/unix/unix.c
===================================================================
--- mozilla/nsprpub/pr/src/md/unix/unix.c	(revision 191424)
+++ mozilla/nsprpub/pr/src/md/unix/unix.c	(working copy)
@@ -1,3774 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "primpl.h"
-
-#include <string.h>
-#include <signal.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <unistd.h>
-#include <sys/utsname.h>
-
-#ifdef _PR_POLL_AVAILABLE
-#include <poll.h>
-#endif
-
-/* To get FIONREAD */
-#if defined(UNIXWARE)
-#include <sys/filio.h>
-#endif
-
-#if defined(NTO)
-#include <sys/statvfs.h>
-#endif
-
-/*
- * Make sure _PRSockLen_t is 32-bit, because we will cast a PRUint32* or
- * PRInt32* pointer to a _PRSockLen_t* pointer.
- */
-#if defined(HAVE_SOCKLEN_T) \
-    || (defined(__GLIBC__) && __GLIBC__ >= 2)
-#define _PRSockLen_t socklen_t
-#elif defined(IRIX) || defined(HPUX) || defined(OSF1) || defined(SOLARIS) \
-    || defined(AIX4_1) || defined(LINUX) \
-    || defined(BSDI) || defined(SCO) \
-    || defined(DARWIN) \
-    || defined(QNX)
-#define _PRSockLen_t int
-#elif (defined(AIX) && !defined(AIX4_1)) || defined(FREEBSD) \
-    || defined(NETBSD) || defined(OPENBSD) || defined(UNIXWARE) \
-    || defined(DGUX) || defined(NTO) || defined(RISCOS)
-#define _PRSockLen_t size_t
-#else
-#error "Cannot determine architecture"
-#endif
-
-/*
-** Global lock variable used to bracket calls into rusty libraries that
-** aren't thread safe (like libc, libX, etc).
-*/
-static PRLock *_pr_rename_lock = NULL;
-static PRMonitor *_pr_Xfe_mon = NULL;
-
-static PRInt64 minus_one;
-
-sigset_t timer_set;
-
-#if !defined(_PR_PTHREADS)
-
-static sigset_t empty_set;
-
-#ifdef SOLARIS
-#include <sys/file.h>
-#include <sys/filio.h>
-#endif
-
-#ifndef PIPE_BUF
-#define PIPE_BUF 512
-#endif
-
-/*
- * _nspr_noclock - if set clock interrupts are disabled
- */
-int _nspr_noclock = 1;
-
-#ifdef IRIX
-extern PRInt32 _nspr_terminate_on_error;
-#endif
-
-/*
- * There is an assertion in this code that NSPR's definition of PRIOVec
- * is bit compatible with UNIX' definition of a struct iovec. This is
- * applicable to the 'writev()' operations where the types are casually
- * cast to avoid warnings.
- */
-
-int _pr_md_pipefd[2] = { -1, -1 };
-static char _pr_md_pipebuf[PIPE_BUF];
-static PRInt32 local_io_wait(PRInt32 osfd, PRInt32 wait_flag,
-							PRIntervalTime timeout);
-
-_PRInterruptTable _pr_interruptTable[] = {
-    { 
-        "clock", _PR_MISSED_CLOCK, _PR_ClockInterrupt,     },
-    { 
-        0     }
-};
-
-void _MD_unix_init_running_cpu(_PRCPU *cpu)
-{
-    PR_INIT_CLIST(&(cpu->md.md_unix.ioQ));
-    cpu->md.md_unix.ioq_max_osfd = -1;
-    cpu->md.md_unix.ioq_timeout = PR_INTERVAL_NO_TIMEOUT;
-}
-
-PRStatus _MD_open_dir(_MDDir *d, const char *name)
-{
-int err;
-
-    d->d = opendir(name);
-    if (!d->d) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_OPENDIR_ERROR(err);
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-PRInt32 _MD_close_dir(_MDDir *d)
-{
-int rv = 0, err;
-
-    if (d->d) {
-        rv = closedir(d->d);
-        if (rv == -1) {
-                err = _MD_ERRNO();
-                _PR_MD_MAP_CLOSEDIR_ERROR(err);
-        }
-    }
-    return rv;
-}
-
-char * _MD_read_dir(_MDDir *d, PRIntn flags)
-{
-struct dirent *de;
-int err;
-
-    for (;;) {
-        /*
-          * XXX: readdir() is not MT-safe. There is an MT-safe version
-          * readdir_r() on some systems.
-          */
-        _MD_ERRNO() = 0;
-        de = readdir(d->d);
-        if (!de) {
-            err = _MD_ERRNO();
-            _PR_MD_MAP_READDIR_ERROR(err);
-            return 0;
-        }        
-        if ((flags & PR_SKIP_DOT) &&
-            (de->d_name[0] == '.') && (de->d_name[1] == 0))
-            continue;
-        if ((flags & PR_SKIP_DOT_DOT) &&
-            (de->d_name[0] == '.') && (de->d_name[1] == '.') &&
-            (de->d_name[2] == 0))
-            continue;
-        if ((flags & PR_SKIP_HIDDEN) && (de->d_name[0] == '.'))
-            continue;
-        break;
-    }
-    return de->d_name;
-}
-
-PRInt32 _MD_delete(const char *name)
-{
-PRInt32 rv, err;
-#ifdef UNIXWARE
-    sigset_t set, oset;
-#endif
-
-#ifdef UNIXWARE
-    sigfillset(&set);
-    sigprocmask(SIG_SETMASK, &set, &oset);
-#endif
-    rv = unlink(name);
-#ifdef UNIXWARE
-    sigprocmask(SIG_SETMASK, &oset, NULL);
-#endif
-    if (rv == -1) {
-            err = _MD_ERRNO();
-            _PR_MD_MAP_UNLINK_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_rename(const char *from, const char *to)
-{
-    PRInt32 rv = -1, err;
-
-    /*
-    ** This is trying to enforce the semantics of WINDOZE' rename
-    ** operation. That means one is not allowed to rename over top
-    ** of an existing file. Holding a lock across these two function
-    ** and the open function is known to be a bad idea, but ....
-    */
-    if (NULL != _pr_rename_lock)
-        PR_Lock(_pr_rename_lock);
-    if (0 == access(to, F_OK))
-        PR_SetError(PR_FILE_EXISTS_ERROR, 0);
-    else
-    {
-        rv = rename(from, to);
-        if (rv < 0) {
-            err = _MD_ERRNO();
-            _PR_MD_MAP_RENAME_ERROR(err);
-        }
-    }
-    if (NULL != _pr_rename_lock)
-        PR_Unlock(_pr_rename_lock);
-    return rv;
-}
-
-PRInt32 _MD_access(const char *name, PRAccessHow how)
-{
-PRInt32 rv, err;
-int amode;
-
-    switch (how) {
-        case PR_ACCESS_WRITE_OK:
-            amode = W_OK;
-            break;
-        case PR_ACCESS_READ_OK:
-            amode = R_OK;
-            break;
-        case PR_ACCESS_EXISTS:
-            amode = F_OK;
-            break;
-        default:
-            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
-            rv = -1;
-            goto done;
-    }
-    rv = access(name, amode);
-
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_ACCESS_ERROR(err);
-    }
-
-done:
-    return(rv);
-}
-
-PRInt32 _MD_mkdir(const char *name, PRIntn mode)
-{
-int rv, err;
-
-    /*
-    ** This lock is used to enforce rename semantics as described
-    ** in PR_Rename. Look there for more fun details.
-    */
-    if (NULL !=_pr_rename_lock)
-        PR_Lock(_pr_rename_lock);
-    rv = mkdir(name, mode);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_MKDIR_ERROR(err);
-    }
-    if (NULL !=_pr_rename_lock)
-        PR_Unlock(_pr_rename_lock);
-    return rv;
-}
-
-PRInt32 _MD_rmdir(const char *name)
-{
-int rv, err;
-
-    rv = rmdir(name);
-    if (rv == -1) {
-            err = _MD_ERRNO();
-            _PR_MD_MAP_RMDIR_ERROR(err);
-    }
-    return rv;
-}
-
-PRInt32 _MD_read(PRFileDesc *fd, void *buf, PRInt32 amount)
-{
-PRThread *me = _PR_MD_CURRENT_THREAD();
-PRInt32 rv, err;
-#ifndef _PR_USE_POLL
-fd_set rd;
-#else
-struct pollfd pfd;
-#endif /* _PR_USE_POLL */
-PRInt32 osfd = fd->secret->md.osfd;
-
-#ifndef _PR_USE_POLL
-    FD_ZERO(&rd);
-    FD_SET(osfd, &rd);
-#else
-    pfd.fd = osfd;
-    pfd.events = POLLIN;
-#endif /* _PR_USE_POLL */
-    while ((rv = read(osfd,buf,amount)) == -1) {
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK)) {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-                if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_READ,
-										PR_INTERVAL_NO_TIMEOUT)) < 0)
-					goto done;								
-            } else {
-#ifndef _PR_USE_POLL
-                while ((rv = _MD_SELECT(osfd + 1, &rd, NULL, NULL, NULL))
-                        == -1 && (err = _MD_ERRNO()) == EINTR) {
-                    /* retry _MD_SELECT() if it is interrupted */
-                }
-#else /* _PR_USE_POLL */
-                while ((rv = _MD_POLL(&pfd, 1, -1))
-                        == -1 && (err = _MD_ERRNO()) == EINTR) {
-                    /* retry _MD_POLL() if it is interrupted */
-                }
-#endif /* _PR_USE_POLL */
-                if (rv == -1) {
-                    break;
-                }
-            }
-            if (_PR_PENDING_INTERRUPT(me))
-                break;
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        if (_PR_PENDING_INTERRUPT(me)) {
-            me->flags &= ~_PR_INTERRUPT;
-            PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-        } else {
-            _PR_MD_MAP_READ_ERROR(err);
-        }
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_write(PRFileDesc *fd, const void *buf, PRInt32 amount)
-{
-PRThread *me = _PR_MD_CURRENT_THREAD();
-PRInt32 rv, err;
-#ifndef _PR_USE_POLL
-fd_set wd;
-#else
-struct pollfd pfd;
-#endif /* _PR_USE_POLL */
-PRInt32 osfd = fd->secret->md.osfd;
-
-#ifndef _PR_USE_POLL
-    FD_ZERO(&wd);
-    FD_SET(osfd, &wd);
-#else
-    pfd.fd = osfd;
-    pfd.events = POLLOUT;
-#endif /* _PR_USE_POLL */
-    while ((rv = write(osfd,buf,amount)) == -1) {
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK)) {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-                if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_WRITE,
-										PR_INTERVAL_NO_TIMEOUT)) < 0)
-                    goto done;
-            } else {
-#ifndef _PR_USE_POLL
-                while ((rv = _MD_SELECT(osfd + 1, NULL, &wd, NULL, NULL))
-                        == -1 && (err = _MD_ERRNO()) == EINTR) {
-                    /* retry _MD_SELECT() if it is interrupted */
-                }
-#else /* _PR_USE_POLL */
-                while ((rv = _MD_POLL(&pfd, 1, -1))
-                        == -1 && (err = _MD_ERRNO()) == EINTR) {
-                    /* retry _MD_POLL() if it is interrupted */
-                }
-#endif /* _PR_USE_POLL */
-                if (rv == -1) {
-                    break;
-                }
-            }
-            if (_PR_PENDING_INTERRUPT(me))
-                break;
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        if (_PR_PENDING_INTERRUPT(me)) {
-            me->flags &= ~_PR_INTERRUPT;
-            PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-        } else {
-            _PR_MD_MAP_WRITE_ERROR(err);
-        }
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_fsync(PRFileDesc *fd)
-{
-PRInt32 rv, err;
-
-    rv = fsync(fd->secret->md.osfd);
-    if (rv == -1) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_FSYNC_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_close(PRInt32 osfd)
-{
-PRInt32 rv, err;
-
-    rv = close(osfd);
-    if (rv == -1) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_CLOSE_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_socket(PRInt32 domain, PRInt32 type, PRInt32 proto)
-{
-    PRInt32 osfd, err;
-
-    osfd = socket(domain, type, proto);
-
-    if (osfd == -1) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_SOCKET_ERROR(err);
-        return(osfd);
-    }
-
-    return(osfd);
-}
-
-PRInt32 _MD_socketavailable(PRFileDesc *fd)
-{
-    PRInt32 result;
-
-    if (ioctl(fd->secret->md.osfd, FIONREAD, &result) < 0) {
-        _PR_MD_MAP_SOCKETAVAILABLE_ERROR(_MD_ERRNO());
-        return -1;
-    }
-    return result;
-}
-
-PRInt64 _MD_socketavailable64(PRFileDesc *fd)
-{
-    PRInt64 result;
-    LL_I2L(result, _MD_socketavailable(fd));
-    return result;
-}  /* _MD_socketavailable64 */
-
-#define READ_FD        1
-#define WRITE_FD    2
-
-/*
- * socket_io_wait --
- *
- * wait for socket i/o, periodically checking for interrupt
- *
- * The first implementation uses select(), for platforms without
- * poll().  The second (preferred) implementation uses poll().
- */
-
-#ifndef _PR_USE_POLL
-
-static PRInt32 socket_io_wait(PRInt32 osfd, PRInt32 fd_type,
-    PRIntervalTime timeout)
-{
-    PRInt32 rv = -1;
-    struct timeval tv;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-    PRIntervalTime epoch, now, elapsed, remaining;
-    PRBool wait_for_remaining;
-    PRInt32 syserror;
-    fd_set rd_wr;
-
-    switch (timeout) {
-        case PR_INTERVAL_NO_WAIT:
-            PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
-            break;
-        case PR_INTERVAL_NO_TIMEOUT:
-            /*
-             * This is a special case of the 'default' case below.
-             * Please see the comments there.
-             */
-            tv.tv_sec = _PR_INTERRUPT_CHECK_INTERVAL_SECS;
-            tv.tv_usec = 0;
-            FD_ZERO(&rd_wr);
-            do {
-                FD_SET(osfd, &rd_wr);
-                if (fd_type == READ_FD)
-                    rv = _MD_SELECT(osfd + 1, &rd_wr, NULL, NULL, &tv);
-                else
-                    rv = _MD_SELECT(osfd + 1, NULL, &rd_wr, NULL, &tv);
-                if (rv == -1 && (syserror = _MD_ERRNO()) != EINTR) {
-                    _PR_MD_MAP_SELECT_ERROR(syserror);
-                    break;
-                }
-                if (_PR_PENDING_INTERRUPT(me)) {
-                    me->flags &= ~_PR_INTERRUPT;
-                    PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-                    rv = -1;
-                    break;
-                }
-            } while (rv == 0 || (rv == -1 && syserror == EINTR));
-            break;
-        default:
-            now = epoch = PR_IntervalNow();
-            remaining = timeout;
-            FD_ZERO(&rd_wr);
-            do {
-                /*
-                 * We block in _MD_SELECT for at most
-                 * _PR_INTERRUPT_CHECK_INTERVAL_SECS seconds,
-                 * so that there is an upper limit on the delay
-                 * before the interrupt bit is checked.
-                 */
-                wait_for_remaining = PR_TRUE;
-                tv.tv_sec = PR_IntervalToSeconds(remaining);
-                if (tv.tv_sec > _PR_INTERRUPT_CHECK_INTERVAL_SECS) {
-                    wait_for_remaining = PR_FALSE;
-                    tv.tv_sec = _PR_INTERRUPT_CHECK_INTERVAL_SECS;
-                    tv.tv_usec = 0;
-                } else {
-                    tv.tv_usec = PR_IntervalToMicroseconds(
-                        remaining -
-                        PR_SecondsToInterval(tv.tv_sec));
-                }
-                FD_SET(osfd, &rd_wr);
-                if (fd_type == READ_FD)
-                    rv = _MD_SELECT(osfd + 1, &rd_wr, NULL, NULL, &tv);
-                else
-                    rv = _MD_SELECT(osfd + 1, NULL, &rd_wr, NULL, &tv);
-                /*
-                 * we don't consider EINTR a real error
-                 */
-                if (rv == -1 && (syserror = _MD_ERRNO()) != EINTR) {
-                    _PR_MD_MAP_SELECT_ERROR(syserror);
-                    break;
-                }
-                if (_PR_PENDING_INTERRUPT(me)) {
-                    me->flags &= ~_PR_INTERRUPT;
-                    PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-                    rv = -1;
-                    break;
-                }
-                /*
-                 * We loop again if _MD_SELECT timed out or got interrupted
-                 * by a signal, and the timeout deadline has not passed yet.
-                 */
-                if (rv == 0 || (rv == -1 && syserror == EINTR)) {
-                    /*
-                     * If _MD_SELECT timed out, we know how much time
-                     * we spent in blocking, so we can avoid a
-                     * PR_IntervalNow() call.
-                     */
-                    if (rv == 0) {
-                        if (wait_for_remaining) {
-                            now += remaining;
-                        } else {
-                            now += PR_SecondsToInterval(tv.tv_sec)
-                                + PR_MicrosecondsToInterval(tv.tv_usec);
-                        }
-                    } else {
-                        now = PR_IntervalNow();
-                    }
-                    elapsed = (PRIntervalTime) (now - epoch);
-                    if (elapsed >= timeout) {
-                        PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
-                        rv = -1;
-                        break;
-                    } else {
-                        remaining = timeout - elapsed;
-                    }
-                }
-            } while (rv == 0 || (rv == -1 && syserror == EINTR));
-            break;
-    }
-    return(rv);
-}
-
-#else /* _PR_USE_POLL */
-
-static PRInt32 socket_io_wait(PRInt32 osfd, PRInt32 fd_type,
-    PRIntervalTime timeout)
-{
-    PRInt32 rv = -1;
-    int msecs;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-    PRIntervalTime epoch, now, elapsed, remaining;
-    PRBool wait_for_remaining;
-    PRInt32 syserror;
-    struct pollfd pfd;
-
-    switch (timeout) {
-        case PR_INTERVAL_NO_WAIT:
-            PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
-            break;
-        case PR_INTERVAL_NO_TIMEOUT:
-            /*
-             * This is a special case of the 'default' case below.
-             * Please see the comments there.
-             */
-            msecs = _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000;
-            pfd.fd = osfd;
-            if (fd_type == READ_FD) {
-                pfd.events = POLLIN;
-            } else {
-                pfd.events = POLLOUT;
-            }
-            do {
-                rv = _MD_POLL(&pfd, 1, msecs);
-                if (rv == -1 && (syserror = _MD_ERRNO()) != EINTR) {
-                    _PR_MD_MAP_POLL_ERROR(syserror);
-                    break;
-                }
-				/*
-				 * If POLLERR is set, don't process it; retry the operation
-				 */
-                if ((rv == 1) && (pfd.revents & (POLLHUP | POLLNVAL))) {
-					rv = -1;
-                    _PR_MD_MAP_POLL_REVENTS_ERROR(pfd.revents);
-                    break;
-                }
-                if (_PR_PENDING_INTERRUPT(me)) {
-                    me->flags &= ~_PR_INTERRUPT;
-                    PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-                    rv = -1;
-                    break;
-                }
-            } while (rv == 0 || (rv == -1 && syserror == EINTR));
-            break;
-        default:
-            now = epoch = PR_IntervalNow();
-            remaining = timeout;
-            pfd.fd = osfd;
-            if (fd_type == READ_FD) {
-                pfd.events = POLLIN;
-            } else {
-                pfd.events = POLLOUT;
-            }
-            do {
-                /*
-                 * We block in _MD_POLL for at most
-                 * _PR_INTERRUPT_CHECK_INTERVAL_SECS seconds,
-                 * so that there is an upper limit on the delay
-                 * before the interrupt bit is checked.
-                 */
-                wait_for_remaining = PR_TRUE;
-                msecs = PR_IntervalToMilliseconds(remaining);
-                if (msecs > _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000) {
-                    wait_for_remaining = PR_FALSE;
-                    msecs = _PR_INTERRUPT_CHECK_INTERVAL_SECS * 1000;
-                }
-                rv = _MD_POLL(&pfd, 1, msecs);
-                /*
-                 * we don't consider EINTR a real error
-                 */
-                if (rv == -1 && (syserror = _MD_ERRNO()) != EINTR) {
-                    _PR_MD_MAP_POLL_ERROR(syserror);
-                    break;
-                }
-                if (_PR_PENDING_INTERRUPT(me)) {
-                    me->flags &= ~_PR_INTERRUPT;
-                    PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-                    rv = -1;
-                    break;
-                }
-				/*
-				 * If POLLERR is set, don't process it; retry the operation
-				 */
-                if ((rv == 1) && (pfd.revents & (POLLHUP | POLLNVAL))) {
-					rv = -1;
-                    _PR_MD_MAP_POLL_REVENTS_ERROR(pfd.revents);
-                    break;
-                }
-                /*
-                 * We loop again if _MD_POLL timed out or got interrupted
-                 * by a signal, and the timeout deadline has not passed yet.
-                 */
-                if (rv == 0 || (rv == -1 && syserror == EINTR)) {
-                    /*
-                     * If _MD_POLL timed out, we know how much time
-                     * we spent in blocking, so we can avoid a
-                     * PR_IntervalNow() call.
-                     */
-                    if (rv == 0) {
-                        if (wait_for_remaining) {
-                            now += remaining;
-                        } else {
-                            now += PR_MillisecondsToInterval(msecs);
-                        }
-                    } else {
-                        now = PR_IntervalNow();
-                    }
-                    elapsed = (PRIntervalTime) (now - epoch);
-                    if (elapsed >= timeout) {
-                        PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
-                        rv = -1;
-                        break;
-                    } else {
-                        remaining = timeout - elapsed;
-                    }
-                }
-            } while (rv == 0 || (rv == -1 && syserror == EINTR));
-            break;
-    }
-    return(rv);
-}
-
-#endif /* _PR_USE_POLL */
-
-static PRInt32 local_io_wait(
-    PRInt32 osfd,
-    PRInt32 wait_flag,
-    PRIntervalTime timeout)
-{
-    _PRUnixPollDesc pd;
-    PRInt32 rv;
-
-    PR_LOG(_pr_io_lm, PR_LOG_MIN,
-       ("waiting to %s on osfd=%d",
-        (wait_flag == _PR_UNIX_POLL_READ) ? "read" : "write",
-        osfd));
-
-    if (timeout == PR_INTERVAL_NO_WAIT) return 0;
-
-    pd.osfd = osfd;
-    pd.in_flags = wait_flag;
-    pd.out_flags = 0;
-
-    rv = _PR_WaitForMultipleFDs(&pd, 1, timeout);
-
-    if (rv == 0) {
-        PR_SetError(PR_IO_TIMEOUT_ERROR, 0);
-        rv = -1;
-    }
-    return rv;
-}
-
-
-PRInt32 _MD_recv(PRFileDesc *fd, void *buf, PRInt32 amount,
-                                PRInt32 flags, PRIntervalTime timeout)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-
-/*
- * Many OS's (Solaris, Unixware) have a broken recv which won't read
- * from socketpairs.  As long as we don't use flags on socketpairs, this
- * is a decent fix. - mikep
- */
-#if defined(UNIXWARE) || defined(SOLARIS)
-    while ((rv = read(osfd,buf,amount)) == -1) {
-#else
-    while ((rv = recv(osfd,buf,amount,flags)) == -1) {
-#endif
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK)) {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-				if ((rv = local_io_wait(osfd,_PR_UNIX_POLL_READ,timeout)) < 0)
-					goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_RECV_ERROR(err);
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_recvfrom(PRFileDesc *fd, void *buf, PRInt32 amount,
-                        PRIntn flags, PRNetAddr *addr, PRUint32 *addrlen,
-                        PRIntervalTime timeout)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-
-    while ((*addrlen = PR_NETADDR_SIZE(addr)),
-                ((rv = recvfrom(osfd, buf, amount, flags,
-                        (struct sockaddr *) addr, (_PRSockLen_t *)addrlen)) == -1)) {
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK)) {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-                if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_READ, timeout)) < 0)
-                    goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_RECVFROM_ERROR(err);
-    }
-done:
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    if (rv != -1) {
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr) {
-            addr->raw.family = ((struct sockaddr *) addr)->sa_family;
-        }
-    }
-#endif /* _PR_HAVE_SOCKADDR_LEN */
-    return(rv);
-}
-
-PRInt32 _MD_send(PRFileDesc *fd, const void *buf, PRInt32 amount,
-                            PRInt32 flags, PRIntervalTime timeout)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-#if defined(SOLARIS)
-	PRInt32 tmp_amount = amount;
-#endif
-
-    /*
-     * On pre-2.6 Solaris, send() is much slower than write().
-     * On 2.6 and beyond, with in-kernel sockets, send() and
-     * write() are fairly equivalent in performance.
-     */
-#if defined(SOLARIS)
-    PR_ASSERT(0 == flags);
-    while ((rv = write(osfd,buf,tmp_amount)) == -1) {
-#else
-    while ((rv = send(osfd,buf,amount,flags)) == -1) {
-#endif
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK))    {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-                if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout)) < 0)
-                    goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, WRITE_FD, timeout))< 0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-#if defined(SOLARIS)
-			/*
-			 * The write system call has been reported to return the ERANGE
-			 * error on occasion. Try to write in smaller chunks to workaround
-			 * this bug.
-			 */
-			if (err == ERANGE) {
-				if (tmp_amount > 1) {
-					tmp_amount = tmp_amount/2;	/* half the bytes */
-					continue;
-				}
-			}
-#endif
-            break;
-        }
-    }
-        /*
-         * optimization; if bytes sent is less than "amount" call
-         * select before returning. This is because it is likely that
-         * the next send() call will return EWOULDBLOCK.
-         */
-    if ((!fd->secret->nonblocking) && (rv > 0) && (rv < amount)
-            && (timeout != PR_INTERVAL_NO_WAIT)) {
-        if (_PR_IS_NATIVE_THREAD(me)) {
-			if (socket_io_wait(osfd, WRITE_FD, timeout)< 0) {
-				rv = -1;
-				goto done;
-			}
-        } else {
-			if (local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout) < 0) {
-				rv = -1;
-				goto done;
-			}
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_SEND_ERROR(err);
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_sendto(
-    PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
-    const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    PRNetAddr addrCopy;
-
-    addrCopy = *addr;
-    ((struct sockaddr *) &addrCopy)->sa_len = addrlen;
-    ((struct sockaddr *) &addrCopy)->sa_family = addr->raw.family;
-
-    while ((rv = sendto(osfd, buf, amount, flags,
-            (struct sockaddr *) &addrCopy, addrlen)) == -1) {
-#else
-    while ((rv = sendto(osfd, buf, amount, flags,
-            (struct sockaddr *) addr, addrlen)) == -1) {
-#endif
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK))    {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-				if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout)) < 0)
-					goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, WRITE_FD, timeout))< 0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_SENDTO_ERROR(err);
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_writev(
-    PRFileDesc *fd, const PRIOVec *iov,
-    PRInt32 iov_size, PRIntervalTime timeout)
-{
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-    PRInt32 index, amount = 0;
-    PRInt32 osfd = fd->secret->md.osfd;
-
-    /*
-     * Calculate the total number of bytes to be sent; needed for
-     * optimization later.
-     * We could avoid this if this number was passed in; but it is
-     * probably not a big deal because iov_size is usually small (less than
-     * 3)
-     */
-    if (!fd->secret->nonblocking) {
-        for (index=0; index<iov_size; index++) {
-            amount += iov[index].iov_len;
-        }
-    }
-
-    while ((rv = writev(osfd, (const struct iovec*)iov, iov_size)) == -1) {
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK))    {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-				if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout)) < 0)
-					goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, WRITE_FD, timeout))<0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    /*
-     * optimization; if bytes sent is less than "amount" call
-     * select before returning. This is because it is likely that
-     * the next writev() call will return EWOULDBLOCK.
-     */
-    if ((!fd->secret->nonblocking) && (rv > 0) && (rv < amount)
-            && (timeout != PR_INTERVAL_NO_WAIT)) {
-        if (_PR_IS_NATIVE_THREAD(me)) {
-            if (socket_io_wait(osfd, WRITE_FD, timeout) < 0) {
-				rv = -1;
-                goto done;
-			}
-        } else {
-			if (local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout) < 0) {
-				rv = -1;
-				goto done;
-			}
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_WRITEV_ERROR(err);
-    }
-done:
-    return(rv);
-}
-
-PRInt32 _MD_accept(PRFileDesc *fd, PRNetAddr *addr,
-                            PRUint32 *addrlen, PRIntervalTime timeout)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-
-    while ((rv = accept(osfd, (struct sockaddr *) addr,
-                                        (_PRSockLen_t *)addrlen)) == -1) {
-        err = _MD_ERRNO();
-        if ((err == EAGAIN) || (err == EWOULDBLOCK) || (err == ECONNABORTED)) {
-            if (fd->secret->nonblocking) {
-                break;
-            }
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-				if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_READ, timeout)) < 0)
-					goto done;
-            } else {
-                if ((rv = socket_io_wait(osfd, READ_FD, timeout)) < 0)
-                    goto done;
-            }
-        } else if ((err == EINTR) && (!_PR_PENDING_INTERRUPT(me))){
-            continue;
-        } else {
-            break;
-        }
-    }
-    if (rv < 0) {
-        _PR_MD_MAP_ACCEPT_ERROR(err);
-    }
-done:
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    if (rv != -1) {
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr) {
-            addr->raw.family = ((struct sockaddr *) addr)->sa_family;
-        }
-    }
-#endif /* _PR_HAVE_SOCKADDR_LEN */
-    return(rv);
-}
-
-extern int _connect (int s, const struct sockaddr *name, int namelen);
-PRInt32 _MD_connect(
-    PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout)
-{
-    PRInt32 rv, err;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-    PRInt32 osfd = fd->secret->md.osfd;
-#ifdef IRIX
-extern PRInt32 _MD_irix_connect(
-        PRInt32 osfd, const PRNetAddr *addr, PRInt32 addrlen, PRIntervalTime timeout);
-#endif
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    PRNetAddr addrCopy;
-
-    addrCopy = *addr;
-    ((struct sockaddr *) &addrCopy)->sa_len = addrlen;
-    ((struct sockaddr *) &addrCopy)->sa_family = addr->raw.family;
-#endif
-
-    /*
-     * We initiate the connection setup by making a nonblocking connect()
-     * call.  If the connect() call fails, there are two cases we handle
-     * specially:
-     * 1. The connect() call was interrupted by a signal.  In this case
-     *    we simply retry connect().
-     * 2. The NSPR socket is nonblocking and connect() fails with
-     *    EINPROGRESS.  We first wait until the socket becomes writable.
-     *    Then we try to find out whether the connection setup succeeded
-     *    or failed.
-     */
-
-retry:
-#ifdef IRIX
-    if ((rv = _MD_irix_connect(osfd, addr, addrlen, timeout)) == -1) {
-#else
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    if ((rv = connect(osfd, (struct sockaddr *)&addrCopy, addrlen)) == -1) {
-#else
-    if ((rv = connect(osfd, (struct sockaddr *)addr, addrlen)) == -1) {
-#endif
-#endif
-        err = _MD_ERRNO();
-
-        if (err == EINTR) {
-            if (_PR_PENDING_INTERRUPT(me)) {
-                me->flags &= ~_PR_INTERRUPT;
-                PR_SetError( PR_PENDING_INTERRUPT_ERROR, 0);
-                return -1;
-            }
-            goto retry;
-        }
-
-        if (!fd->secret->nonblocking && (err == EINPROGRESS)) {
-            if (!_PR_IS_NATIVE_THREAD(me)) {
-
-				if ((rv = local_io_wait(osfd, _PR_UNIX_POLL_WRITE, timeout)) < 0)
-                    return -1;
-            } else {
-                /*
-                 * socket_io_wait() may return -1 or 1.
-                 */
-
-                rv = socket_io_wait(osfd, WRITE_FD, timeout);
-                if (rv == -1) {
-                    return -1;
-                }
-            }
-
-            PR_ASSERT(rv == 1);
-            if (_PR_PENDING_INTERRUPT(me)) {
-                me->flags &= ~_PR_INTERRUPT;
-                PR_SetError( PR_PENDING_INTERRUPT_ERROR, 0);
-                return -1;
-            }
-            err = _MD_unix_get_nonblocking_connect_error(osfd);
-            if (err != 0) {
-                _PR_MD_MAP_CONNECT_ERROR(err);
-                return -1;
-            }
-            return 0;
-        }
-
-        _PR_MD_MAP_CONNECT_ERROR(err);
-    }
-
-    return rv;
-}  /* _MD_connect */
-
-PRInt32 _MD_bind(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen)
-{
-    PRInt32 rv, err;
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    PRNetAddr addrCopy;
-
-    addrCopy = *addr;
-    ((struct sockaddr *) &addrCopy)->sa_len = addrlen;
-    ((struct sockaddr *) &addrCopy)->sa_family = addr->raw.family;
-    rv = bind(fd->secret->md.osfd, (struct sockaddr *) &addrCopy, (int )addrlen);
-#else
-    rv = bind(fd->secret->md.osfd, (struct sockaddr *) addr, (int )addrlen);
-#endif
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_BIND_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_listen(PRFileDesc *fd, PRIntn backlog)
-{
-    PRInt32 rv, err;
-
-    rv = listen(fd->secret->md.osfd, backlog);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_LISTEN_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_shutdown(PRFileDesc *fd, PRIntn how)
-{
-    PRInt32 rv, err;
-
-    rv = shutdown(fd->secret->md.osfd, how);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_SHUTDOWN_ERROR(err);
-    }
-    return(rv);
-}
-
-PRInt32 _MD_socketpair(int af, int type, int flags,
-                                                        PRInt32 *osfd)
-{
-    PRInt32 rv, err;
-
-    rv = socketpair(af, type, flags, osfd);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_SOCKETPAIR_ERROR(err);
-    }
-    return rv;
-}
-
-PRStatus _MD_getsockname(PRFileDesc *fd, PRNetAddr *addr,
-                                                PRUint32 *addrlen)
-{
-    PRInt32 rv, err;
-
-    rv = getsockname(fd->secret->md.osfd,
-            (struct sockaddr *) addr, (_PRSockLen_t *)addrlen);
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    if (rv == 0) {
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr) {
-            addr->raw.family = ((struct sockaddr *) addr)->sa_family;
-        }
-    }
-#endif /* _PR_HAVE_SOCKADDR_LEN */
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_GETSOCKNAME_ERROR(err);
-    }
-    return rv==0?PR_SUCCESS:PR_FAILURE;
-}
-
-PRStatus _MD_getpeername(PRFileDesc *fd, PRNetAddr *addr,
-                                        PRUint32 *addrlen)
-{
-    PRInt32 rv, err;
-
-    rv = getpeername(fd->secret->md.osfd,
-            (struct sockaddr *) addr, (_PRSockLen_t *)addrlen);
-#ifdef _PR_HAVE_SOCKADDR_LEN
-    if (rv == 0) {
-        /* ignore the sa_len field of struct sockaddr */
-        if (addr) {
-            addr->raw.family = ((struct sockaddr *) addr)->sa_family;
-        }
-    }
-#endif /* _PR_HAVE_SOCKADDR_LEN */
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_GETPEERNAME_ERROR(err);
-    }
-    return rv==0?PR_SUCCESS:PR_FAILURE;
-}
-
-PRStatus _MD_getsockopt(PRFileDesc *fd, PRInt32 level,
-                        PRInt32 optname, char* optval, PRInt32* optlen)
-{
-    PRInt32 rv, err;
-
-    rv = getsockopt(fd->secret->md.osfd, level, optname, optval, (_PRSockLen_t *)optlen);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_GETSOCKOPT_ERROR(err);
-    }
-    return rv==0?PR_SUCCESS:PR_FAILURE;
-}
-
-PRStatus _MD_setsockopt(PRFileDesc *fd, PRInt32 level,   
-                    PRInt32 optname, const char* optval, PRInt32 optlen)
-{
-    PRInt32 rv, err;
-
-    rv = setsockopt(fd->secret->md.osfd, level, optname, optval, optlen);
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_SETSOCKOPT_ERROR(err);
-    }
-    return rv==0?PR_SUCCESS:PR_FAILURE;
-}
-
-PRStatus _MD_set_fd_inheritable(PRFileDesc *fd, PRBool inheritable)
-{
-    int rv;
-
-    rv = fcntl(fd->secret->md.osfd, F_SETFD, inheritable ? 0 : FD_CLOEXEC);
-    if (-1 == rv) {
-        PR_SetError(PR_UNKNOWN_ERROR, _MD_ERRNO());
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-void _MD_init_fd_inheritable(PRFileDesc *fd, PRBool imported)
-{
-    if (imported) {
-        fd->secret->inheritable = _PR_TRI_UNKNOWN;
-    } else {
-        /* By default, a Unix fd is not closed on exec. */
-#ifdef DEBUG
-        {
-            int flags = fcntl(fd->secret->md.osfd, F_GETFD, 0);
-            PR_ASSERT(0 == flags);
-        }
-#endif
-        fd->secret->inheritable = _PR_TRI_TRUE;
-    }
-}
-
-/************************************************************************/
-#if !defined(_PR_USE_POLL)
-
-/*
-** Scan through io queue and find any bad fd's that triggered the error
-** from _MD_SELECT
-*/
-static void FindBadFDs(void)
-{
-    PRCList *q;
-    PRThread *me = _MD_CURRENT_THREAD();
-
-    PR_ASSERT(!_PR_IS_NATIVE_THREAD(me));
-    q = (_PR_IOQ(me->cpu)).next;
-    _PR_IOQ_MAX_OSFD(me->cpu) = -1;
-    _PR_IOQ_TIMEOUT(me->cpu) = PR_INTERVAL_NO_TIMEOUT;
-    while (q != &_PR_IOQ(me->cpu)) {
-        PRPollQueue *pq = _PR_POLLQUEUE_PTR(q);
-        PRBool notify = PR_FALSE;
-        _PRUnixPollDesc *pds = pq->pds;
-        _PRUnixPollDesc *epds = pds + pq->npds;
-        PRInt32 pq_max_osfd = -1;
-
-        q = q->next;
-        for (; pds < epds; pds++) {
-            PRInt32 osfd = pds->osfd;
-            pds->out_flags = 0;
-            PR_ASSERT(osfd >= 0 || pds->in_flags == 0);
-            if (pds->in_flags == 0) {
-                continue;  /* skip this fd */
-            }
-            if (fcntl(osfd, F_GETFL, 0) == -1) {
-                /* Found a bad descriptor, remove it from the fd_sets. */
-                PR_LOG(_pr_io_lm, PR_LOG_MAX,
-                    ("file descriptor %d is bad", osfd));
-                pds->out_flags = _PR_UNIX_POLL_NVAL;
-                notify = PR_TRUE;
-            }
-            if (osfd > pq_max_osfd) {
-                pq_max_osfd = osfd;
-            }
-        }
-
-        if (notify) {
-            PRIntn pri;
-            PR_REMOVE_LINK(&pq->links);
-            pq->on_ioq = PR_FALSE;
-
-            /*
-         * Decrement the count of descriptors for each desciptor/event
-         * because this I/O request is being removed from the
-         * ioq
-         */
-            pds = pq->pds;
-            for (; pds < epds; pds++) {
-                PRInt32 osfd = pds->osfd;
-                PRInt16 in_flags = pds->in_flags;
-                PR_ASSERT(osfd >= 0 || in_flags == 0);
-                if (in_flags & _PR_UNIX_POLL_READ) {
-                    if (--(_PR_FD_READ_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_READ_SET(me->cpu));
-                }
-                if (in_flags & _PR_UNIX_POLL_WRITE) {
-                    if (--(_PR_FD_WRITE_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_WRITE_SET(me->cpu));
-                }
-                if (in_flags & _PR_UNIX_POLL_EXCEPT) {
-                    if (--(_PR_FD_EXCEPTION_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_EXCEPTION_SET(me->cpu));
-                }
-            }
-
-            _PR_THREAD_LOCK(pq->thr);
-            if (pq->thr->flags & (_PR_ON_PAUSEQ|_PR_ON_SLEEPQ)) {
-                _PRCPU *cpu = pq->thr->cpu;
-                _PR_SLEEPQ_LOCK(pq->thr->cpu);
-                _PR_DEL_SLEEPQ(pq->thr, PR_TRUE);
-                _PR_SLEEPQ_UNLOCK(pq->thr->cpu);
-
-				if (pq->thr->flags & _PR_SUSPENDING) {
-				    /*
-				     * set thread state to SUSPENDED;
-				     * a Resume operation on the thread
-				     * will move it to the runQ
-				     */
-				    pq->thr->state = _PR_SUSPENDED;
-				    _PR_MISCQ_LOCK(pq->thr->cpu);
-				    _PR_ADD_SUSPENDQ(pq->thr, pq->thr->cpu);
-				    _PR_MISCQ_UNLOCK(pq->thr->cpu);
-				} else {
-				    pri = pq->thr->priority;
-				    pq->thr->state = _PR_RUNNABLE;
-
-				    _PR_RUNQ_LOCK(cpu);
-				    _PR_ADD_RUNQ(pq->thr, cpu, pri);
-				    _PR_RUNQ_UNLOCK(cpu);
-				}
-            }
-            _PR_THREAD_UNLOCK(pq->thr);
-        } else {
-            if (pq->timeout < _PR_IOQ_TIMEOUT(me->cpu))
-                _PR_IOQ_TIMEOUT(me->cpu) = pq->timeout;
-            if (_PR_IOQ_MAX_OSFD(me->cpu) < pq_max_osfd)
-                _PR_IOQ_MAX_OSFD(me->cpu) = pq_max_osfd;
-        }
-    }
-    if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-        if (_PR_IOQ_MAX_OSFD(me->cpu) < _pr_md_pipefd[0])
-            _PR_IOQ_MAX_OSFD(me->cpu) = _pr_md_pipefd[0];
-    }
-}
-#endif  /* !defined(_PR_USE_POLL) */
-
-/************************************************************************/
-
-/*
-** Called by the scheduler when there is nothing to do. This means that
-** all threads are blocked on some monitor somewhere.
-**
-** Note: this code doesn't release the scheduler lock.
-*/
-/*
-** Pause the current CPU. longjmp to the cpu's pause stack
-**
-** This must be called with the scheduler locked
-*/
-void _MD_PauseCPU(PRIntervalTime ticks)
-{
-    PRThread *me = _MD_CURRENT_THREAD();
-#ifdef _PR_USE_POLL
-    int timeout;
-    struct pollfd *pollfds;    /* an array of pollfd structures */
-    struct pollfd *pollfdPtr;    /* a pointer that steps through the array */
-    unsigned long npollfds;     /* number of pollfd structures in array */
-    unsigned long pollfds_size;
-    int nfd;                    /* to hold the return value of poll() */
-#else
-    struct timeval timeout, *tvp;
-    fd_set r, w, e;
-    fd_set *rp, *wp, *ep;
-    PRInt32 max_osfd, nfd;
-#endif  /* _PR_USE_POLL */
-    PRInt32 rv;
-    PRCList *q;
-    PRUint32 min_timeout;
-    sigset_t oldset;
-#ifdef IRIX
-extern sigset_t ints_off;
-#endif
-
-    PR_ASSERT(_PR_MD_GET_INTSOFF() != 0);
-
-    _PR_MD_IOQ_LOCK();
-
-#ifdef _PR_USE_POLL
-    /* Build up the pollfd structure array to wait on */
-
-    /* Find out how many pollfd structures are needed */
-    npollfds = _PR_IOQ_OSFD_CNT(me->cpu);
-    PR_ASSERT(npollfds >= 0);
-
-    /*
-     * We use a pipe to wake up a native thread.  An fd is needed
-     * for the pipe and we poll it for reading.
-     */
-    if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-        npollfds++;
-#ifdef	IRIX
-		/*
-		 * On Irix, a second pipe is used to cause the primordial cpu to
-		 * wakeup and exit, when the process is exiting because of a call
-		 * to exit/PR_ProcessExit.
-		 */
-		if (me->cpu->id == 0) {
-        	npollfds++;
-		}
-#endif
-	}
-
-    /*
-     * if the cpu's pollfd array is not big enough, release it and allocate a new one
-     */
-    if (npollfds > _PR_IOQ_POLLFDS_SIZE(me->cpu)) {
-        if (_PR_IOQ_POLLFDS(me->cpu) != NULL)
-            PR_DELETE(_PR_IOQ_POLLFDS(me->cpu));
-        pollfds_size =  PR_MAX(_PR_IOQ_MIN_POLLFDS_SIZE(me->cpu), npollfds);
-        pollfds = (struct pollfd *) PR_MALLOC(pollfds_size * sizeof(struct pollfd));
-        _PR_IOQ_POLLFDS(me->cpu) = pollfds;
-        _PR_IOQ_POLLFDS_SIZE(me->cpu) = pollfds_size;
-    } else {
-        pollfds = _PR_IOQ_POLLFDS(me->cpu);
-    }
-    pollfdPtr = pollfds;
-
-    /*
-     * If we need to poll the pipe for waking up a native thread,
-     * the pipe's fd is the first element in the pollfds array.
-     */
-    if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-        pollfdPtr->fd = _pr_md_pipefd[0];
-        pollfdPtr->events = POLLIN;
-        pollfdPtr++;
-#ifdef	IRIX
-		/*
-		 * On Irix, the second element is the exit pipe
-		 */
-		if (me->cpu->id == 0) {
-			pollfdPtr->fd = _pr_irix_primoridal_cpu_fd[0];
-			pollfdPtr->events = POLLIN;
-			pollfdPtr++;
-		}
-#endif
-    }
-
-    min_timeout = PR_INTERVAL_NO_TIMEOUT;
-    for (q = _PR_IOQ(me->cpu).next; q != &_PR_IOQ(me->cpu); q = q->next) {
-        PRPollQueue *pq = _PR_POLLQUEUE_PTR(q);
-        _PRUnixPollDesc *pds = pq->pds;
-        _PRUnixPollDesc *epds = pds + pq->npds;
-
-        if (pq->timeout < min_timeout) {
-            min_timeout = pq->timeout;
-        }
-        for (; pds < epds; pds++, pollfdPtr++) {
-            /*
-         * Assert that the pollfdPtr pointer does not go
-         * beyond the end of the pollfds array
-         */
-            PR_ASSERT(pollfdPtr < pollfds + npollfds);
-            pollfdPtr->fd = pds->osfd;
-            /* direct copy of poll flags */
-            pollfdPtr->events = pds->in_flags;
-        }
-    }
-    _PR_IOQ_TIMEOUT(me->cpu) = min_timeout;
-#else
-    /*
-     * assigment of fd_sets
-     */
-    r = _PR_FD_READ_SET(me->cpu);
-    w = _PR_FD_WRITE_SET(me->cpu);
-    e = _PR_FD_EXCEPTION_SET(me->cpu);
-
-    rp = &r;
-    wp = &w;
-    ep = &e;
-
-    max_osfd = _PR_IOQ_MAX_OSFD(me->cpu) + 1;
-    min_timeout = _PR_IOQ_TIMEOUT(me->cpu);
-#endif  /* _PR_USE_POLL */
-    /*
-    ** Compute the minimum timeout value: make it the smaller of the
-    ** timeouts specified by the i/o pollers or the timeout of the first
-    ** sleeping thread.
-    */
-    q = _PR_SLEEPQ(me->cpu).next;
-
-    if (q != &_PR_SLEEPQ(me->cpu)) {
-        PRThread *t = _PR_THREAD_PTR(q);
-
-        if (t->sleep < min_timeout) {
-            min_timeout = t->sleep;
-        }
-    }
-    if (min_timeout > ticks) {
-        min_timeout = ticks;
-    }
-
-#ifdef _PR_USE_POLL
-    if (min_timeout == PR_INTERVAL_NO_TIMEOUT)
-        timeout = -1;
-    else
-        timeout = PR_IntervalToMilliseconds(min_timeout);
-#else
-    if (min_timeout == PR_INTERVAL_NO_TIMEOUT) {
-        tvp = NULL;
-    } else {
-        timeout.tv_sec = PR_IntervalToSeconds(min_timeout);
-        timeout.tv_usec = PR_IntervalToMicroseconds(min_timeout)
-            % PR_USEC_PER_SEC;
-        tvp = &timeout;
-    }
-#endif  /* _PR_USE_POLL */
-
-    _PR_MD_IOQ_UNLOCK();
-    _MD_CHECK_FOR_EXIT();
-    /*
-     * check for i/o operations
-     */
-#ifndef _PR_NO_CLOCK_TIMER
-    /*
-     * Disable the clock interrupts while we are in select, if clock interrupts
-     * are enabled. Otherwise, when the select/poll calls are interrupted, the
-     * timer value starts ticking from zero again when the system call is restarted.
-     */
-#ifdef IRIX
-    /*
-     * SIGCHLD signal is used on Irix to detect he termination of an
-     * sproc by SIGSEGV, SIGBUS or SIGABRT signals when
-     * _nspr_terminate_on_error is set.
-     */
-    if ((!_nspr_noclock) || (_nspr_terminate_on_error))
-#else
-        if (!_nspr_noclock)
-#endif    /* IRIX */
-#ifdef IRIX
-    sigprocmask(SIG_BLOCK, &ints_off, &oldset);
-#else
-    PR_ASSERT(sigismember(&timer_set, SIGALRM));
-    sigprocmask(SIG_BLOCK, &timer_set, &oldset);
-#endif    /* IRIX */
-#endif  /* !_PR_NO_CLOCK_TIMER */
-
-#ifndef _PR_USE_POLL
-    PR_ASSERT(FD_ISSET(_pr_md_pipefd[0],rp));
-    nfd = _MD_SELECT(max_osfd, rp, wp, ep, tvp);
-#else
-    nfd = _MD_POLL(pollfds, npollfds, timeout);
-#endif  /* !_PR_USE_POLL */
-
-#ifndef _PR_NO_CLOCK_TIMER
-#ifdef IRIX
-    if ((!_nspr_noclock) || (_nspr_terminate_on_error))
-#else
-        if (!_nspr_noclock)
-#endif    /* IRIX */
-    sigprocmask(SIG_SETMASK, &oldset, 0);
-#endif  /* !_PR_NO_CLOCK_TIMER */
-
-    _MD_CHECK_FOR_EXIT();
-
-#ifdef IRIX
-	_PR_MD_primordial_cpu();
-#endif
-
-    _PR_MD_IOQ_LOCK();
-    /*
-    ** Notify monitors that are associated with the selected descriptors.
-    */
-#ifdef _PR_USE_POLL
-    if (nfd > 0) {
-        pollfdPtr = pollfds;
-        if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-            /*
-			 * Assert that the pipe is the first element in the
-			 * pollfds array.
-			 */
-            PR_ASSERT(pollfds[0].fd == _pr_md_pipefd[0]);
-            if ((pollfds[0].revents & POLLIN) && (nfd == 1)) {
-                /*
-				 * woken up by another thread; read all the data
-				 * in the pipe to empty the pipe
-				 */
-                while ((rv = read(_pr_md_pipefd[0], _pr_md_pipebuf,
-                    PIPE_BUF)) == PIPE_BUF){
-                }
-                PR_ASSERT((rv > 0) || ((rv == -1) && (errno == EAGAIN)));
-            }
-            pollfdPtr++;
-#ifdef	IRIX
-			/*
-			 * On Irix, check to see if the primordial cpu needs to exit
-			 * to cause the process to terminate
-			 */
-			if (me->cpu->id == 0) {
-            	PR_ASSERT(pollfds[1].fd == _pr_irix_primoridal_cpu_fd[0]);
-				if (pollfdPtr->revents & POLLIN) {
-					if (_pr_irix_process_exit) {
-						/*
-						 * process exit due to a call to PR_ProcessExit
-						 */
-						prctl(PR_SETEXITSIG, SIGKILL);
-						_exit(_pr_irix_process_exit_code);
-					} else {
-						while ((rv = read(_pr_irix_primoridal_cpu_fd[0],
-							_pr_md_pipebuf, PIPE_BUF)) == PIPE_BUF) {
-						}
-						PR_ASSERT(rv > 0);
-					}
-				}
-				pollfdPtr++;
-			}
-#endif
-        }
-        for (q = _PR_IOQ(me->cpu).next; q != &_PR_IOQ(me->cpu); q = q->next) {
-            PRPollQueue *pq = _PR_POLLQUEUE_PTR(q);
-            PRBool notify = PR_FALSE;
-            _PRUnixPollDesc *pds = pq->pds;
-            _PRUnixPollDesc *epds = pds + pq->npds;
-
-            for (; pds < epds; pds++, pollfdPtr++) {
-                /*
-                  * Assert that the pollfdPtr pointer does not go beyond
-                  * the end of the pollfds array.
-                  */
-                PR_ASSERT(pollfdPtr < pollfds + npollfds);
-                /*
-                 * Assert that the fd's in the pollfds array (stepped
-                 * through by pollfdPtr) are in the same order as
-                 * the fd's in _PR_IOQ() (stepped through by q and pds).
-                 * This is how the pollfds array was created earlier.
-                 */
-                PR_ASSERT(pollfdPtr->fd == pds->osfd);
-                pds->out_flags = pollfdPtr->revents;
-                /* Negative fd's are ignored by poll() */
-                if (pds->osfd >= 0 && pds->out_flags) {
-                    notify = PR_TRUE;
-                }
-            }
-            if (notify) {
-                PRIntn pri;
-                PRThread *thred;
-
-                PR_REMOVE_LINK(&pq->links);
-                pq->on_ioq = PR_FALSE;
-
-                thred = pq->thr;
-                _PR_THREAD_LOCK(thred);
-                if (pq->thr->flags & (_PR_ON_PAUSEQ|_PR_ON_SLEEPQ)) {
-                    _PRCPU *cpu = pq->thr->cpu;
-                    _PR_SLEEPQ_LOCK(pq->thr->cpu);
-                    _PR_DEL_SLEEPQ(pq->thr, PR_TRUE);
-                    _PR_SLEEPQ_UNLOCK(pq->thr->cpu);
-
-					if (pq->thr->flags & _PR_SUSPENDING) {
-					    /*
-					     * set thread state to SUSPENDED;
-					     * a Resume operation on the thread
-					     * will move it to the runQ
-					     */
-					    pq->thr->state = _PR_SUSPENDED;
-					    _PR_MISCQ_LOCK(pq->thr->cpu);
-					    _PR_ADD_SUSPENDQ(pq->thr, pq->thr->cpu);
-					    _PR_MISCQ_UNLOCK(pq->thr->cpu);
-					} else {
-						pri = pq->thr->priority;
-						pq->thr->state = _PR_RUNNABLE;
-
-						_PR_RUNQ_LOCK(cpu);
-						_PR_ADD_RUNQ(pq->thr, cpu, pri);
-						_PR_RUNQ_UNLOCK(cpu);
-						if (_pr_md_idle_cpus > 1)
-							_PR_MD_WAKEUP_WAITER(thred);
-					}
-                }
-                _PR_THREAD_UNLOCK(thred);
-                _PR_IOQ_OSFD_CNT(me->cpu) -= pq->npds;
-                PR_ASSERT(_PR_IOQ_OSFD_CNT(me->cpu) >= 0);
-            }
-        }
-    } else if (nfd == -1) {
-        PR_LOG(_pr_io_lm, PR_LOG_MAX, ("poll() failed with errno %d", errno));
-    }
-
-#else
-    if (nfd > 0) {
-        q = _PR_IOQ(me->cpu).next;
-        _PR_IOQ_MAX_OSFD(me->cpu) = -1;
-        _PR_IOQ_TIMEOUT(me->cpu) = PR_INTERVAL_NO_TIMEOUT;
-        while (q != &_PR_IOQ(me->cpu)) {
-            PRPollQueue *pq = _PR_POLLQUEUE_PTR(q);
-            PRBool notify = PR_FALSE;
-            _PRUnixPollDesc *pds = pq->pds;
-            _PRUnixPollDesc *epds = pds + pq->npds;
-            PRInt32 pq_max_osfd = -1;
-
-            q = q->next;
-            for (; pds < epds; pds++) {
-                PRInt32 osfd = pds->osfd;
-                PRInt16 in_flags = pds->in_flags;
-                PRInt16 out_flags = 0;
-                PR_ASSERT(osfd >= 0 || in_flags == 0);
-                if ((in_flags & _PR_UNIX_POLL_READ) && FD_ISSET(osfd, rp)) {
-                    out_flags |= _PR_UNIX_POLL_READ;
-                }
-                if ((in_flags & _PR_UNIX_POLL_WRITE) && FD_ISSET(osfd, wp)) {
-                    out_flags |= _PR_UNIX_POLL_WRITE;
-                }
-                if ((in_flags & _PR_UNIX_POLL_EXCEPT) && FD_ISSET(osfd, ep)) {
-                    out_flags |= _PR_UNIX_POLL_EXCEPT;
-                }
-                pds->out_flags = out_flags;
-                if (out_flags) {
-                    notify = PR_TRUE;
-                }
-                if (osfd > pq_max_osfd) {
-                    pq_max_osfd = osfd;
-                }
-            }
-            if (notify == PR_TRUE) {
-                PRIntn pri;
-                PRThread *thred;
-
-                PR_REMOVE_LINK(&pq->links);
-                pq->on_ioq = PR_FALSE;
-
-                /*
-                 * Decrement the count of descriptors for each desciptor/event
-                 * because this I/O request is being removed from the
-                 * ioq
-                 */
-                pds = pq->pds;
-                for (; pds < epds; pds++) {
-                    PRInt32 osfd = pds->osfd;
-                    PRInt16 in_flags = pds->in_flags;
-                    PR_ASSERT(osfd >= 0 || in_flags == 0);
-                    if (in_flags & _PR_UNIX_POLL_READ) {
-                        if (--(_PR_FD_READ_CNT(me->cpu))[osfd] == 0)
-                            FD_CLR(osfd, &_PR_FD_READ_SET(me->cpu));
-                    }
-                    if (in_flags & _PR_UNIX_POLL_WRITE) {
-                        if (--(_PR_FD_WRITE_CNT(me->cpu))[osfd] == 0)
-                            FD_CLR(osfd, &_PR_FD_WRITE_SET(me->cpu));
-                    }
-                    if (in_flags & _PR_UNIX_POLL_EXCEPT) {
-                        if (--(_PR_FD_EXCEPTION_CNT(me->cpu))[osfd] == 0)
-                            FD_CLR(osfd, &_PR_FD_EXCEPTION_SET(me->cpu));
-                    }
-                }
-
-                /*
-                 * Because this thread can run on a different cpu right
-                 * after being added to the run queue, do not dereference
-                 * pq
-                 */
-                 thred = pq->thr;
-                _PR_THREAD_LOCK(thred);
-                if (pq->thr->flags & (_PR_ON_PAUSEQ|_PR_ON_SLEEPQ)) {
-                    _PRCPU *cpu = thred->cpu;
-                    _PR_SLEEPQ_LOCK(pq->thr->cpu);
-                    _PR_DEL_SLEEPQ(pq->thr, PR_TRUE);
-                    _PR_SLEEPQ_UNLOCK(pq->thr->cpu);
-
-					if (pq->thr->flags & _PR_SUSPENDING) {
-					    /*
-					     * set thread state to SUSPENDED;
-					     * a Resume operation on the thread
-					     * will move it to the runQ
-					     */
-					    pq->thr->state = _PR_SUSPENDED;
-					    _PR_MISCQ_LOCK(pq->thr->cpu);
-					    _PR_ADD_SUSPENDQ(pq->thr, pq->thr->cpu);
-					    _PR_MISCQ_UNLOCK(pq->thr->cpu);
-					} else {
-						pri = pq->thr->priority;
-						pq->thr->state = _PR_RUNNABLE;
-
-						pq->thr->cpu = cpu;
-						_PR_RUNQ_LOCK(cpu);
-						_PR_ADD_RUNQ(pq->thr, cpu, pri);
-						_PR_RUNQ_UNLOCK(cpu);
-						if (_pr_md_idle_cpus > 1)
-							_PR_MD_WAKEUP_WAITER(thred);
-					}
-                }
-                _PR_THREAD_UNLOCK(thred);
-            } else {
-                if (pq->timeout < _PR_IOQ_TIMEOUT(me->cpu))
-                    _PR_IOQ_TIMEOUT(me->cpu) = pq->timeout;
-                if (_PR_IOQ_MAX_OSFD(me->cpu) < pq_max_osfd)
-                    _PR_IOQ_MAX_OSFD(me->cpu) = pq_max_osfd;
-            }
-        }
-        if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-            if ((FD_ISSET(_pr_md_pipefd[0], rp)) && (nfd == 1)) {
-                /*
-             * woken up by another thread; read all the data
-             * in the pipe to empty the pipe
-             */
-                while ((rv =
-                    read(_pr_md_pipefd[0], _pr_md_pipebuf, PIPE_BUF))
-                    == PIPE_BUF){
-                }
-                PR_ASSERT((rv > 0) ||
-                    ((rv == -1) && (errno == EAGAIN)));
-            }
-            if (_PR_IOQ_MAX_OSFD(me->cpu) < _pr_md_pipefd[0])
-                _PR_IOQ_MAX_OSFD(me->cpu) = _pr_md_pipefd[0];
-#ifdef	IRIX
-			if ((me->cpu->id == 0) && 
-						(FD_ISSET(_pr_irix_primoridal_cpu_fd[0], rp))) {
-				if (_pr_irix_process_exit) {
-					/*
-					 * process exit due to a call to PR_ProcessExit
-					 */
-					prctl(PR_SETEXITSIG, SIGKILL);
-					_exit(_pr_irix_process_exit_code);
-				} else {
-						while ((rv = read(_pr_irix_primoridal_cpu_fd[0],
-							_pr_md_pipebuf, PIPE_BUF)) == PIPE_BUF) {
-						}
-						PR_ASSERT(rv > 0);
-				}
-			}
-			if (me->cpu->id == 0) {
-				if (_PR_IOQ_MAX_OSFD(me->cpu) < _pr_irix_primoridal_cpu_fd[0])
-					_PR_IOQ_MAX_OSFD(me->cpu) = _pr_irix_primoridal_cpu_fd[0];
-			}
-#endif
-        }
-    } else if (nfd < 0) {
-        if (errno == EBADF) {
-            FindBadFDs();
-        } else {
-            PR_LOG(_pr_io_lm, PR_LOG_MAX, ("select() failed with errno %d",
-                errno));
-        }
-    } else {
-        PR_ASSERT(nfd == 0);
-        /*
-         * compute the new value of _PR_IOQ_TIMEOUT
-         */
-        q = _PR_IOQ(me->cpu).next;
-        _PR_IOQ_MAX_OSFD(me->cpu) = -1;
-        _PR_IOQ_TIMEOUT(me->cpu) = PR_INTERVAL_NO_TIMEOUT;
-        while (q != &_PR_IOQ(me->cpu)) {
-            PRPollQueue *pq = _PR_POLLQUEUE_PTR(q);
-            _PRUnixPollDesc *pds = pq->pds;
-            _PRUnixPollDesc *epds = pds + pq->npds;
-            PRInt32 pq_max_osfd = -1;
-
-            q = q->next;
-            for (; pds < epds; pds++) {
-                if (pds->osfd > pq_max_osfd) {
-                    pq_max_osfd = pds->osfd;
-                }
-            }
-            if (pq->timeout < _PR_IOQ_TIMEOUT(me->cpu))
-                _PR_IOQ_TIMEOUT(me->cpu) = pq->timeout;
-            if (_PR_IOQ_MAX_OSFD(me->cpu) < pq_max_osfd)
-                _PR_IOQ_MAX_OSFD(me->cpu) = pq_max_osfd;
-        }
-        if (_PR_IS_NATIVE_THREAD_SUPPORTED()) {
-            if (_PR_IOQ_MAX_OSFD(me->cpu) < _pr_md_pipefd[0])
-                _PR_IOQ_MAX_OSFD(me->cpu) = _pr_md_pipefd[0];
-        }
-    }
-#endif  /* _PR_USE_POLL */
-    _PR_MD_IOQ_UNLOCK();
-}
-
-void _MD_Wakeup_CPUs()
-{
-    PRInt32 rv, data;
-
-    data = 0;
-    rv = write(_pr_md_pipefd[1], &data, 1);
-
-    while ((rv < 0) && (errno == EAGAIN)) {
-        /*
-         * pipe full, read all data in pipe to empty it
-         */
-        while ((rv =
-            read(_pr_md_pipefd[0], _pr_md_pipebuf, PIPE_BUF))
-            == PIPE_BUF) {
-        }
-        PR_ASSERT((rv > 0) ||
-            ((rv == -1) && (errno == EAGAIN)));
-        rv = write(_pr_md_pipefd[1], &data, 1);
-    }
-}
-
-
-void _MD_InitCPUS()
-{
-    PRInt32 rv, flags;
-    PRThread *me = _MD_CURRENT_THREAD();
-
-    rv = pipe(_pr_md_pipefd);
-    PR_ASSERT(rv == 0);
-    _PR_IOQ_MAX_OSFD(me->cpu) = _pr_md_pipefd[0];
-#ifndef _PR_USE_POLL
-    FD_SET(_pr_md_pipefd[0], &_PR_FD_READ_SET(me->cpu));
-#endif
-
-    flags = fcntl(_pr_md_pipefd[0], F_GETFL, 0);
-    fcntl(_pr_md_pipefd[0], F_SETFL, flags | O_NONBLOCK);
-    flags = fcntl(_pr_md_pipefd[1], F_GETFL, 0);
-    fcntl(_pr_md_pipefd[1], F_SETFL, flags | O_NONBLOCK);
-}
-
-/*
-** Unix SIGALRM (clock) signal handler
-*/
-static void ClockInterruptHandler()
-{
-    int olderrno;
-    PRUintn pri;
-    _PRCPU *cpu = _PR_MD_CURRENT_CPU();
-    PRThread *me = _MD_CURRENT_THREAD();
-
-#ifdef SOLARIS
-    if (!me || _PR_IS_NATIVE_THREAD(me)) {
-        _pr_primordialCPU->u.missed[_pr_primordialCPU->where] |= _PR_MISSED_CLOCK;
-        return;
-    }
-#endif
-
-    if (_PR_MD_GET_INTSOFF() != 0) {
-        cpu->u.missed[cpu->where] |= _PR_MISSED_CLOCK;
-        return;
-    }
-    _PR_MD_SET_INTSOFF(1);
-
-    olderrno = errno;
-    _PR_ClockInterrupt();
-    errno = olderrno;
-
-    /*
-    ** If the interrupt wants a resched or if some other thread at
-    ** the same priority needs the cpu, reschedule.
-    */
-    pri = me->priority;
-    if ((cpu->u.missed[3] || (_PR_RUNQREADYMASK(me->cpu) >> pri))) {
-#ifdef _PR_NO_PREEMPT
-        cpu->resched = PR_TRUE;
-        if (pr_interruptSwitchHook) {
-            (*pr_interruptSwitchHook)(pr_interruptSwitchHookArg);
-        }
-#else /* _PR_NO_PREEMPT */
-        /*
-    ** Re-enable unix interrupts (so that we can use
-    ** setjmp/longjmp for context switching without having to
-    ** worry about the signal state)
-    */
-        sigprocmask(SIG_SETMASK, &empty_set, 0);
-        PR_LOG(_pr_sched_lm, PR_LOG_MIN, ("clock caused context switch"));
-
-        if(!(me->flags & _PR_IDLE_THREAD)) {
-            _PR_THREAD_LOCK(me);
-            me->state = _PR_RUNNABLE;
-            me->cpu = cpu;
-            _PR_RUNQ_LOCK(cpu);
-            _PR_ADD_RUNQ(me, cpu, pri);
-            _PR_RUNQ_UNLOCK(cpu);
-            _PR_THREAD_UNLOCK(me);
-        } else
-            me->state = _PR_RUNNABLE;
-        _MD_SWITCH_CONTEXT(me);
-        PR_LOG(_pr_sched_lm, PR_LOG_MIN, ("clock back from context switch"));
-#endif /* _PR_NO_PREEMPT */
-    }
-    /*
-     * Because this thread could be running on a different cpu after
-     * a context switch the current cpu should be accessed and the
-     * value of the 'cpu' variable should not be used.
-     */
-    _PR_MD_SET_INTSOFF(0);
-}
-
-/*
- * On HP-UX 9, we have to use the sigvector() interface to restart
- * interrupted system calls, because sigaction() does not have the
- * SA_RESTART flag.
- */
-
-#ifdef HPUX9
-static void HPUX9_ClockInterruptHandler(
-    int sig,
-    int code,
-    struct sigcontext *scp)
-{
-    ClockInterruptHandler();
-    scp->sc_syscall_action = SIG_RESTART;
-}
-#endif /* HPUX9 */
-
-/* # of milliseconds per clock tick that we will use */
-#define MSEC_PER_TICK    50
-
-
-void _MD_StartInterrupts()
-{
-    char *eval;
-
-    if ((eval = getenv("NSPR_NOCLOCK")) != NULL) {
-        if (atoi(eval) == 0)
-            _nspr_noclock = 0;
-        else
-            _nspr_noclock = 1;
-    }
-
-#ifndef _PR_NO_CLOCK_TIMER
-    if (!_nspr_noclock) {
-        _MD_EnableClockInterrupts();
-    }
-#endif
-}
-
-void _MD_StopInterrupts()
-{
-    sigprocmask(SIG_BLOCK, &timer_set, 0);
-}
-
-void _MD_EnableClockInterrupts()
-{
-    struct itimerval itval;
-    extern PRUintn _pr_numCPU;
-#ifdef HPUX9
-    struct sigvec vec;
-
-    vec.sv_handler = (void (*)()) HPUX9_ClockInterruptHandler;
-    vec.sv_mask = 0;
-    vec.sv_flags = 0;
-    sigvector(SIGALRM, &vec, 0);
-#else
-    struct sigaction vtact;
-
-    vtact.sa_handler = (void (*)()) ClockInterruptHandler;
-    sigemptyset(&vtact.sa_mask);
-    vtact.sa_flags = SA_RESTART;
-    sigaction(SIGALRM, &vtact, 0);
-#endif /* HPUX9 */
-
-    PR_ASSERT(_pr_numCPU == 1);
-	itval.it_interval.tv_sec = 0;
-	itval.it_interval.tv_usec = MSEC_PER_TICK * PR_USEC_PER_MSEC;
-	itval.it_value = itval.it_interval;
-	setitimer(ITIMER_REAL, &itval, 0);
-}
-
-void _MD_DisableClockInterrupts()
-{
-    struct itimerval itval;
-    extern PRUintn _pr_numCPU;
-
-    PR_ASSERT(_pr_numCPU == 1);
-	itval.it_interval.tv_sec = 0;
-	itval.it_interval.tv_usec = 0;
-	itval.it_value = itval.it_interval;
-	setitimer(ITIMER_REAL, &itval, 0);
-}
-
-void _MD_BlockClockInterrupts()
-{
-    sigprocmask(SIG_BLOCK, &timer_set, 0);
-}
-
-void _MD_UnblockClockInterrupts()
-{
-    sigprocmask(SIG_UNBLOCK, &timer_set, 0);
-}
-
-void _MD_MakeNonblock(PRFileDesc *fd)
-{
-    PRInt32 osfd = fd->secret->md.osfd;
-    int flags;
-
-    if (osfd <= 2) {
-        /* Don't mess around with stdin, stdout or stderr */
-        return;
-    }
-    flags = fcntl(osfd, F_GETFL, 0);
-
-    /*
-     * Use O_NONBLOCK (POSIX-style non-blocking I/O) whenever possible.
-     * On SunOS 4, we must use FNDELAY (BSD-style non-blocking I/O),
-     * otherwise connect() still blocks and can be interrupted by SIGALRM.
-     */
-
-    fcntl(osfd, F_SETFL, flags | O_NONBLOCK);
-    }
-
-PRInt32 _MD_open(const char *name, PRIntn flags, PRIntn mode)
-{
-    PRInt32 osflags;
-    PRInt32 rv, err;
-
-    if (flags & PR_RDWR) {
-        osflags = O_RDWR;
-    } else if (flags & PR_WRONLY) {
-        osflags = O_WRONLY;
-    } else {
-        osflags = O_RDONLY;
-    }
-
-    if (flags & PR_EXCL)
-        osflags |= O_EXCL;
-    if (flags & PR_APPEND)
-        osflags |= O_APPEND;
-    if (flags & PR_TRUNCATE)
-        osflags |= O_TRUNC;
-    if (flags & PR_SYNC) {
-#if defined(O_SYNC)
-        osflags |= O_SYNC;
-#elif defined(O_FSYNC)
-        osflags |= O_FSYNC;
-#else
-#error "Neither O_SYNC nor O_FSYNC is defined on this platform"
-#endif
-    }
-
-    /*
-    ** On creations we hold the 'create' lock in order to enforce
-    ** the semantics of PR_Rename. (see the latter for more details)
-    */
-    if (flags & PR_CREATE_FILE)
-    {
-        osflags |= O_CREAT;
-        if (NULL !=_pr_rename_lock)
-            PR_Lock(_pr_rename_lock);
-    }
-
-#if defined(ANDROID)
-    osflags |= O_LARGEFILE;
-#endif
-
-    rv = _md_iovector._open64(name, osflags, mode);
-
-    if (rv < 0) {
-        err = _MD_ERRNO();
-        _PR_MD_MAP_OPEN_ERROR(err);
-    }
-
-    if ((flags & PR_CREATE_FILE) && (NULL !=_pr_rename_lock))
-        PR_Unlock(_pr_rename_lock);
-    return rv;
-}
-
-PRIntervalTime intr_timeout_ticks;
-
-#if defined(SOLARIS) || defined(IRIX)
-static void sigsegvhandler() {
-    fprintf(stderr,"Received SIGSEGV\n");
-    fflush(stderr);
-    pause();
-}
-
-static void sigaborthandler() {
-    fprintf(stderr,"Received SIGABRT\n");
-    fflush(stderr);
-    pause();
-}
-
-static void sigbushandler() {
-    fprintf(stderr,"Received SIGBUS\n");
-    fflush(stderr);
-    pause();
-}
-#endif /* SOLARIS, IRIX */
-
-#endif  /* !defined(_PR_PTHREADS) */
-
-void _MD_query_fd_inheritable(PRFileDesc *fd)
-{
-    int flags;
-
-    PR_ASSERT(_PR_TRI_UNKNOWN == fd->secret->inheritable);
-    flags = fcntl(fd->secret->md.osfd, F_GETFD, 0);
-    PR_ASSERT(-1 != flags);
-    fd->secret->inheritable = (flags & FD_CLOEXEC) ?
-        _PR_TRI_FALSE : _PR_TRI_TRUE;
-}
-
-PROffset32 _MD_lseek(PRFileDesc *fd, PROffset32 offset, PRSeekWhence whence)
-{
-    PROffset32 rv, where;
-
-    switch (whence) {
-        case PR_SEEK_SET:
-            where = SEEK_SET;
-            break;
-        case PR_SEEK_CUR:
-            where = SEEK_CUR;
-            break;
-        case PR_SEEK_END:
-            where = SEEK_END;
-            break;
-        default:
-            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
-            rv = -1;
-            goto done;
-    }
-    rv = lseek(fd->secret->md.osfd,offset,where);
-    if (rv == -1)
-    {
-        PRInt32 syserr = _MD_ERRNO();
-        _PR_MD_MAP_LSEEK_ERROR(syserr);
-    }
-done:
-    return(rv);
-}
-
-PROffset64 _MD_lseek64(PRFileDesc *fd, PROffset64 offset, PRSeekWhence whence)
-{
-    PRInt32 where;
-    PROffset64 rv;
-
-    switch (whence)
-    {
-        case PR_SEEK_SET:
-            where = SEEK_SET;
-            break;
-        case PR_SEEK_CUR:
-            where = SEEK_CUR;
-            break;
-        case PR_SEEK_END:
-            where = SEEK_END;
-            break;
-        default:
-            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
-            rv = minus_one;
-            goto done;
-    }
-    rv = _md_iovector._lseek64(fd->secret->md.osfd, offset, where);
-    if (LL_EQ(rv, minus_one))
-    {
-        PRInt32 syserr = _MD_ERRNO();
-        _PR_MD_MAP_LSEEK_ERROR(syserr);
-    }
-done:
-    return rv;
-}  /* _MD_lseek64 */
-
-/*
-** _MD_set_fileinfo_times --
-**     Set the modifyTime and creationTime of the PRFileInfo
-**     structure using the values in struct stat.
-**
-** _MD_set_fileinfo64_times --
-**     Set the modifyTime and creationTime of the PRFileInfo64
-**     structure using the values in _MDStat64.
-*/
-
-#if defined(_PR_STAT_HAS_ST_ATIM)
-/*
-** struct stat has st_atim, st_mtim, and st_ctim fields of
-** type timestruc_t.
-*/
-static void _MD_set_fileinfo_times(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtim.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtim.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctim.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctim.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-
-static void _MD_set_fileinfo64_times(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtim.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtim.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctim.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctim.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-#elif defined(_PR_STAT_HAS_ST_ATIM_UNION)
-/*
-** The st_atim, st_mtim, and st_ctim fields in struct stat are
-** unions with a st__tim union member of type timestruc_t.
-*/
-static void _MD_set_fileinfo_times(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtim.st__tim.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtim.st__tim.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctim.st__tim.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctim.st__tim.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-
-static void _MD_set_fileinfo64_times(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtim.st__tim.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtim.st__tim.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctim.st__tim.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctim.st__tim.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-#elif defined(_PR_STAT_HAS_ST_ATIMESPEC)
-/*
-** struct stat has st_atimespec, st_mtimespec, and st_ctimespec
-** fields of type struct timespec.
-*/
-#if defined(_PR_TIMESPEC_HAS_TS_SEC)
-static void _MD_set_fileinfo_times(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtimespec.ts_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtimespec.ts_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctimespec.ts_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctimespec.ts_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-
-static void _MD_set_fileinfo64_times(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtimespec.ts_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtimespec.ts_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctimespec.ts_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctimespec.ts_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-#else /* _PR_TIMESPEC_HAS_TS_SEC */
-/*
-** The POSIX timespec structure has tv_sec and tv_nsec.
-*/
-static void _MD_set_fileinfo_times(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtimespec.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtimespec.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctimespec.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctimespec.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-
-static void _MD_set_fileinfo64_times(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    PRInt64 us, s2us;
-
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(info->modifyTime, sb->st_mtimespec.tv_sec);
-    LL_MUL(info->modifyTime, info->modifyTime, s2us);
-    LL_I2L(us, sb->st_mtimespec.tv_nsec / 1000);
-    LL_ADD(info->modifyTime, info->modifyTime, us);
-    LL_I2L(info->creationTime, sb->st_ctimespec.tv_sec);
-    LL_MUL(info->creationTime, info->creationTime, s2us);
-    LL_I2L(us, sb->st_ctimespec.tv_nsec / 1000);
-    LL_ADD(info->creationTime, info->creationTime, us);
-}
-#endif /* _PR_TIMESPEC_HAS_TS_SEC */
-#elif defined(_PR_STAT_HAS_ONLY_ST_ATIME)
-/*
-** struct stat only has st_atime, st_mtime, and st_ctime fields
-** of type time_t.
-*/
-static void _MD_set_fileinfo_times(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    PRInt64 s, s2us;
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(s, sb->st_mtime);
-    LL_MUL(s, s, s2us);
-    info->modifyTime = s;
-    LL_I2L(s, sb->st_ctime);
-    LL_MUL(s, s, s2us);
-    info->creationTime = s;
-}
-
-static void _MD_set_fileinfo64_times(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    PRInt64 s, s2us;
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(s, sb->st_mtime);
-    LL_MUL(s, s, s2us);
-    info->modifyTime = s;
-    LL_I2L(s, sb->st_ctime);
-    LL_MUL(s, s, s2us);
-    info->creationTime = s;
-}
-#else
-#error "I don't know yet"
-#endif
-
-static int _MD_convert_stat_to_fileinfo(
-    const struct stat *sb,
-    PRFileInfo *info)
-{
-    if (S_IFREG & sb->st_mode)
-        info->type = PR_FILE_FILE;
-    else if (S_IFDIR & sb->st_mode)
-        info->type = PR_FILE_DIRECTORY;
-    else
-        info->type = PR_FILE_OTHER;
-
-#if defined(_PR_HAVE_LARGE_OFF_T)
-    if (0x7fffffffL < sb->st_size)
-    {
-        PR_SetError(PR_FILE_TOO_BIG_ERROR, 0);
-        return -1;
-    }
-#endif /* defined(_PR_HAVE_LARGE_OFF_T) */
-    info->size = sb->st_size;
-
-    _MD_set_fileinfo_times(sb, info);
-    return 0;
-}  /* _MD_convert_stat_to_fileinfo */
-
-static int _MD_convert_stat64_to_fileinfo64(
-    const _MDStat64 *sb,
-    PRFileInfo64 *info)
-{
-    if (S_IFREG & sb->st_mode)
-        info->type = PR_FILE_FILE;
-    else if (S_IFDIR & sb->st_mode)
-        info->type = PR_FILE_DIRECTORY;
-    else
-        info->type = PR_FILE_OTHER;
-
-    LL_I2L(info->size, sb->st_size);
-
-    _MD_set_fileinfo64_times(sb, info);
-    return 0;
-}  /* _MD_convert_stat64_to_fileinfo64 */
-
-PRInt32 _MD_getfileinfo(const char *fn, PRFileInfo *info)
-{
-    PRInt32 rv;
-    struct stat sb;
-
-    rv = stat(fn, &sb);
-    if (rv < 0)
-        _PR_MD_MAP_STAT_ERROR(_MD_ERRNO());
-    else if (NULL != info)
-        rv = _MD_convert_stat_to_fileinfo(&sb, info);
-    return rv;
-}
-
-PRInt32 _MD_getfileinfo64(const char *fn, PRFileInfo64 *info)
-{
-    _MDStat64 sb;
-    PRInt32 rv = _md_iovector._stat64(fn, &sb);
-    if (rv < 0)
-        _PR_MD_MAP_STAT_ERROR(_MD_ERRNO());
-    else if (NULL != info)
-        rv = _MD_convert_stat64_to_fileinfo64(&sb, info);
-    return rv;
-}
-
-PRInt32 _MD_getopenfileinfo(const PRFileDesc *fd, PRFileInfo *info)
-{
-    struct stat sb;
-    PRInt32 rv = fstat(fd->secret->md.osfd, &sb);
-    if (rv < 0)
-        _PR_MD_MAP_FSTAT_ERROR(_MD_ERRNO());
-    else if (NULL != info)
-        rv = _MD_convert_stat_to_fileinfo(&sb, info);
-    return rv;
-}
-
-PRInt32 _MD_getopenfileinfo64(const PRFileDesc *fd, PRFileInfo64 *info)
-{
-    _MDStat64 sb;
-    PRInt32 rv = _md_iovector._fstat64(fd->secret->md.osfd, &sb);
-    if (rv < 0)
-        _PR_MD_MAP_FSTAT_ERROR(_MD_ERRNO());
-    else if (NULL != info)
-        rv = _MD_convert_stat64_to_fileinfo64(&sb, info);
-    return rv;
-}
-
-/*
- * _md_iovector._open64 must be initialized to 'open' so that _PR_InitLog can
- * open the log file during NSPR initialization, before _md_iovector is
- * initialized by _PR_MD_FINAL_INIT.  This means the log file cannot be a
- * large file on some platforms.
- */
-#ifdef SYMBIAN
-struct _MD_IOVector _md_iovector; /* Will crash if NSPR_LOG_FILE is set. */
-#else
-struct _MD_IOVector _md_iovector = { open };
-#endif
-
-/*
-** These implementations are to emulate large file routines on systems that
-** don't have them. Their goal is to check in case overflow occurs. Otherwise
-** they will just operate as normal using 32-bit file routines.
-**
-** The checking might be pre- or post-op, depending on the semantics.
-*/
-
-#if defined(SOLARIS2_5)
-
-static PRIntn _MD_solaris25_fstat64(PRIntn osfd, _MDStat64 *buf)
-{
-    PRInt32 rv;
-    struct stat sb;
-
-    rv = fstat(osfd, &sb);
-    if (rv >= 0)
-    {
-        /*
-        ** I'm only copying the fields that are immediately needed.
-        ** If somebody else calls this function, some of the fields
-        ** may not be defined.
-        */
-        (void)memset(buf, 0, sizeof(_MDStat64));
-        buf->st_mode = sb.st_mode;
-        buf->st_ctim = sb.st_ctim;
-        buf->st_mtim = sb.st_mtim;
-        buf->st_size = sb.st_size;
-    }
-    return rv;
-}  /* _MD_solaris25_fstat64 */
-
-static PRIntn _MD_solaris25_stat64(const char *fn, _MDStat64 *buf)
-{
-    PRInt32 rv;
-    struct stat sb;
-
-    rv = stat(fn, &sb);
-    if (rv >= 0)
-    {
-        /*
-        ** I'm only copying the fields that are immediately needed.
-        ** If somebody else calls this function, some of the fields
-        ** may not be defined.
-        */
-        (void)memset(buf, 0, sizeof(_MDStat64));
-        buf->st_mode = sb.st_mode;
-        buf->st_ctim = sb.st_ctim;
-        buf->st_mtim = sb.st_mtim;
-        buf->st_size = sb.st_size;
-    }
-    return rv;
-}  /* _MD_solaris25_stat64 */
-#endif /* defined(SOLARIS2_5) */
-
-#if defined(_PR_NO_LARGE_FILES) || defined(SOLARIS2_5)
-
-static PROffset64 _MD_Unix_lseek64(PRIntn osfd, PROffset64 offset, PRIntn whence)
-{
-    PRUint64 maxoff;
-    PROffset64 rv = minus_one;
-    LL_I2L(maxoff, 0x7fffffff);
-    if (LL_CMP(offset, <=, maxoff))
-    {
-        off_t off;
-        LL_L2I(off, offset);
-        LL_I2L(rv, lseek(osfd, off, whence));
-    }
-    else errno = EFBIG;  /* we can't go there */
-    return rv;
-}  /* _MD_Unix_lseek64 */
-
-static void* _MD_Unix_mmap64(
-    void *addr, PRSize len, PRIntn prot, PRIntn flags,
-    PRIntn fildes, PRInt64 offset)
-{
-    PR_SetError(PR_FILE_TOO_BIG_ERROR, 0);
-    return NULL;
-}  /* _MD_Unix_mmap64 */
-#endif /* defined(_PR_NO_LARGE_FILES) || defined(SOLARIS2_5) */
-
-/* Android doesn't have mmap64. */
-#if defined(ANDROID)
-extern void *__mmap2(void *, size_t, int, int, int, size_t);
-
-#define ANDROID_PAGE_SIZE 4096
-
-static void *
-mmap64(void *addr, size_t len, int prot, int flags, int fd, loff_t offset)
-{
-    if (offset & (ANDROID_PAGE_SIZE - 1)) {
-        errno = EINVAL;
-        return MAP_FAILED;
-    }
-    return __mmap2(addr, len, prot, flags, fd, offset / ANDROID_PAGE_SIZE);
-}
-#endif
-
-#if defined(OSF1) && defined(__GNUC__)
-
-/*
- * On OSF1 V5.0A, <sys/stat.h> defines stat and fstat as
- * macros when compiled under gcc, so it is rather tricky to
- * take the addresses of the real functions the macros expend
- * to.  A simple solution is to define forwarder functions
- * and take the addresses of the forwarder functions instead.
- */
-
-static int stat_forwarder(const char *path, struct stat *buffer)
-{
-    return stat(path, buffer);
-}
-
-static int fstat_forwarder(int filedes, struct stat *buffer)
-{
-    return fstat(filedes, buffer);
-}
-
-#endif
-
-static void _PR_InitIOV(void)
-{
-#if defined(SOLARIS2_5)
-    PRLibrary *lib;
-    void *open64_func;
-
-    open64_func = PR_FindSymbolAndLibrary("open64", &lib);
-    if (NULL != open64_func)
-    {
-        PR_ASSERT(NULL != lib);
-        _md_iovector._open64 = (_MD_Open64)open64_func;
-        _md_iovector._mmap64 = (_MD_Mmap64)PR_FindSymbol(lib, "mmap64");
-        _md_iovector._fstat64 = (_MD_Fstat64)PR_FindSymbol(lib, "fstat64");
-        _md_iovector._stat64 = (_MD_Stat64)PR_FindSymbol(lib, "stat64");
-        _md_iovector._lseek64 = (_MD_Lseek64)PR_FindSymbol(lib, "lseek64");
-        (void)PR_UnloadLibrary(lib);
-    }
-    else
-    {
-        _md_iovector._open64 = open;
-        _md_iovector._mmap64 = _MD_Unix_mmap64;
-        _md_iovector._fstat64 = _MD_solaris25_fstat64;
-        _md_iovector._stat64 = _MD_solaris25_stat64;
-        _md_iovector._lseek64 = _MD_Unix_lseek64;
-    }
-#elif defined(_PR_NO_LARGE_FILES)
-    _md_iovector._open64 = open;
-    _md_iovector._mmap64 = _MD_Unix_mmap64;
-    _md_iovector._fstat64 = fstat;
-    _md_iovector._stat64 = stat;
-    _md_iovector._lseek64 = _MD_Unix_lseek64;
-#elif defined(_PR_HAVE_OFF64_T)
-#if defined(IRIX5_3) || defined(ANDROID)
-    /*
-     * Android doesn't have open64.  We pass the O_LARGEFILE flag to open
-     * in _MD_open.
-     */
-    _md_iovector._open64 = open;
-#else
-    _md_iovector._open64 = open64;
-#endif
-    _md_iovector._mmap64 = mmap64;
-    _md_iovector._fstat64 = fstat64;
-    _md_iovector._stat64 = stat64;
-    _md_iovector._lseek64 = lseek64;
-#elif defined(_PR_HAVE_LARGE_OFF_T)
-    _md_iovector._open64 = open;
-    _md_iovector._mmap64 = mmap;
-#if defined(OSF1) && defined(__GNUC__)
-    _md_iovector._fstat64 = fstat_forwarder;
-    _md_iovector._stat64 = stat_forwarder;
-#else
-    _md_iovector._fstat64 = fstat;
-    _md_iovector._stat64 = stat;
-#endif
-    _md_iovector._lseek64 = lseek;
-#else
-#error "I don't know yet"
-#endif
-    LL_I2L(minus_one, -1);
-}  /* _PR_InitIOV */
-
-void _PR_UnixInit(void)
-{
-    struct sigaction sigact;
-    int rv;
-
-    sigemptyset(&timer_set);
-
-#if !defined(_PR_PTHREADS)
-
-    sigaddset(&timer_set, SIGALRM);
-    sigemptyset(&empty_set);
-    intr_timeout_ticks =
-            PR_SecondsToInterval(_PR_INTERRUPT_CHECK_INTERVAL_SECS);
-
-#if defined(SOLARIS) || defined(IRIX)
-
-    if (getenv("NSPR_SIGSEGV_HANDLE")) {
-        sigact.sa_handler = sigsegvhandler;
-        sigact.sa_flags = 0;
-        sigact.sa_mask = timer_set;
-        sigaction(SIGSEGV, &sigact, 0);
-    }
-
-    if (getenv("NSPR_SIGABRT_HANDLE")) {
-        sigact.sa_handler = sigaborthandler;
-        sigact.sa_flags = 0;
-        sigact.sa_mask = timer_set;
-        sigaction(SIGABRT, &sigact, 0);
-    }
-
-    if (getenv("NSPR_SIGBUS_HANDLE")) {
-        sigact.sa_handler = sigbushandler;
-        sigact.sa_flags = 0;
-        sigact.sa_mask = timer_set;
-        sigaction(SIGBUS, &sigact, 0);
-    }
-
-#endif
-#endif  /* !defined(_PR_PTHREADS) */
-
-    /*
-     * Under HP-UX DCE threads, sigaction() installs a per-thread
-     * handler, so we use sigvector() to install a process-wide
-     * handler.
-     */
-#if defined(HPUX) && defined(_PR_DCETHREADS)
-    {
-        struct sigvec vec;
-
-        vec.sv_handler = SIG_IGN;
-        vec.sv_mask = 0;
-        vec.sv_flags = 0;
-        rv = sigvector(SIGPIPE, &vec, NULL);
-        PR_ASSERT(0 == rv);
-    }
-#else
-    sigact.sa_handler = SIG_IGN;
-    sigemptyset(&sigact.sa_mask);
-    sigact.sa_flags = 0;
-    rv = sigaction(SIGPIPE, &sigact, 0);
-    PR_ASSERT(0 == rv);
-#endif /* HPUX && _PR_DCETHREADS */
-
-    _pr_rename_lock = PR_NewLock();
-    PR_ASSERT(NULL != _pr_rename_lock);
-    _pr_Xfe_mon = PR_NewMonitor();
-    PR_ASSERT(NULL != _pr_Xfe_mon);
-
-    _PR_InitIOV();  /* one last hack */
-}
-
-void _PR_UnixCleanup(void)
-{
-    if (_pr_rename_lock) {
-        PR_DestroyLock(_pr_rename_lock);
-        _pr_rename_lock = NULL;
-    }
-    if (_pr_Xfe_mon) {
-        PR_DestroyMonitor(_pr_Xfe_mon);
-        _pr_Xfe_mon = NULL;
-    }
-}
-
-#if !defined(_PR_PTHREADS)
-
-/*
- * Variables used by the GC code, initialized in _MD_InitSegs().
- */
-static PRInt32 _pr_zero_fd = -1;
-static PRLock *_pr_md_lock = NULL;
-
-/*
- * _MD_InitSegs --
- *
- * This is Unix's version of _PR_MD_INIT_SEGS(), which is
- * called by _PR_InitSegs(), which in turn is called by
- * PR_Init().
- */
-void _MD_InitSegs(void)
-{
-#ifdef DEBUG
-    /*
-    ** Disable using mmap(2) if NSPR_NO_MMAP is set
-    */
-    if (getenv("NSPR_NO_MMAP")) {
-        _pr_zero_fd = -2;
-        return;
-    }
-#endif
-    _pr_zero_fd = open("/dev/zero",O_RDWR , 0);
-    /* Prevent the fd from being inherited by child processes */
-    fcntl(_pr_zero_fd, F_SETFD, FD_CLOEXEC);
-    _pr_md_lock = PR_NewLock();
-}
-
-PRStatus _MD_AllocSegment(PRSegment *seg, PRUint32 size, void *vaddr)
-{
-    static char *lastaddr = (char*) _PR_STACK_VMBASE;
-    PRStatus retval = PR_SUCCESS;
-    int prot;
-    void *rv;
-
-    PR_ASSERT(seg != 0);
-    PR_ASSERT(size != 0);
-
-    PR_Lock(_pr_md_lock);
-    if (_pr_zero_fd < 0) {
-from_heap:
-        seg->vaddr = PR_MALLOC(size);
-        if (!seg->vaddr) {
-            retval = PR_FAILURE;
-        }
-        else {
-            seg->size = size;
-        }
-        goto exit;
-    }
-
-    prot = PROT_READ|PROT_WRITE;
-    /*
-     * On Alpha Linux, the user-level thread stack needs
-     * to be made executable because longjmp/signal seem
-     * to put machine instructions on the stack.
-     */
-#if defined(LINUX) && defined(__alpha)
-    prot |= PROT_EXEC;
-#endif
-    rv = mmap((vaddr != 0) ? vaddr : lastaddr, size, prot,
-        _MD_MMAP_FLAGS,
-        _pr_zero_fd, 0);
-    if (rv == (void*)-1) {
-        goto from_heap;
-    }
-    lastaddr += size;
-    seg->vaddr = rv;
-    seg->size = size;
-    seg->flags = _PR_SEG_VM;
-
-exit:
-    PR_Unlock(_pr_md_lock);
-    return retval;
-}
-
-void _MD_FreeSegment(PRSegment *seg)
-{
-    if (seg->flags & _PR_SEG_VM)
-        (void) munmap(seg->vaddr, seg->size);
-    else
-        PR_DELETE(seg->vaddr);
-}
-
-#endif /* _PR_PTHREADS */
-
-/*
- *-----------------------------------------------------------------------
- *
- * PR_Now --
- *
- *     Returns the current time in microseconds since the epoch.
- *     The epoch is midnight January 1, 1970 GMT.
- *     The implementation is machine dependent.  This is the Unix
- *     implementation.
- *     Cf. time_t time(time_t *tp)
- *
- *-----------------------------------------------------------------------
- */
-
-PR_IMPLEMENT(PRTime)
-PR_Now(void)
-{
-    struct timeval tv;
-    PRInt64 s, us, s2us;
-
-    GETTIMEOFDAY(&tv);
-    LL_I2L(s2us, PR_USEC_PER_SEC);
-    LL_I2L(s, tv.tv_sec);
-    LL_I2L(us, tv.tv_usec);
-    LL_MUL(s, s, s2us);
-    LL_ADD(s, s, us);
-    return s;
-}
-
-#if defined(_MD_INTERVAL_USE_GTOD)
-/*
- * This version of interval times is based on the time of day
- * capability offered by the system. This isn't valid for two reasons:
- * 1) The time of day is neither linear nor montonically increasing
- * 2) The units here are milliseconds. That's not appropriate for our use.
- */
-PRIntervalTime _PR_UNIX_GetInterval()
-{
-    struct timeval time;
-    PRIntervalTime ticks;
-
-    (void)GETTIMEOFDAY(&time);  /* fallicy of course */
-    ticks = (PRUint32)time.tv_sec * PR_MSEC_PER_SEC;  /* that's in milliseconds */
-    ticks += (PRUint32)time.tv_usec / PR_USEC_PER_MSEC;  /* so's that */
-    return ticks;
-}  /* _PR_UNIX_GetInterval */
-
-PRIntervalTime _PR_UNIX_TicksPerSecond()
-{
-    return 1000;  /* this needs some work :) */
-}
-#endif
-
-#if defined(HAVE_CLOCK_MONOTONIC)
-PRIntervalTime _PR_UNIX_GetInterval2()
-{
-    struct timespec time;
-    PRIntervalTime ticks;
-
-    if (clock_gettime(CLOCK_MONOTONIC, &time) != 0) {
-        fprintf(stderr, "clock_gettime failed: %d\n", errno);
-        abort();
-    }
-
-    ticks = (PRUint32)time.tv_sec * PR_MSEC_PER_SEC;
-    ticks += (PRUint32)time.tv_nsec / PR_NSEC_PER_MSEC;
-    return ticks;
-}
-
-PRIntervalTime _PR_UNIX_TicksPerSecond2()
-{
-    return 1000;
-}
-#endif
-
-#if !defined(_PR_PTHREADS)
-/*
- * Wait for I/O on multiple descriptors.
- *
- * Return 0 if timed out, return -1 if interrupted,
- * else return the number of ready descriptors.
- */
-PRInt32 _PR_WaitForMultipleFDs(
-    _PRUnixPollDesc *unixpds,
-    PRInt32 pdcnt,
-    PRIntervalTime timeout)
-{
-    PRPollQueue pq;
-    PRIntn is;
-    PRInt32 rv;
-    _PRCPU *io_cpu;
-    _PRUnixPollDesc *unixpd, *eunixpd;
-    PRThread *me = _PR_MD_CURRENT_THREAD();
-
-    PR_ASSERT(!(me->flags & _PR_IDLE_THREAD));
-
-    if (_PR_PENDING_INTERRUPT(me)) {
-        me->flags &= ~_PR_INTERRUPT;
-        PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-        return -1;
-    }
-
-    pq.pds = unixpds;
-    pq.npds = pdcnt;
-
-    _PR_INTSOFF(is);
-    _PR_MD_IOQ_LOCK();
-    _PR_THREAD_LOCK(me);
-
-    pq.thr = me;
-    io_cpu = me->cpu;
-    pq.on_ioq = PR_TRUE;
-    pq.timeout = timeout;
-    _PR_ADD_TO_IOQ(pq, me->cpu);
-
-#if !defined(_PR_USE_POLL)
-    eunixpd = unixpds + pdcnt;
-    for (unixpd = unixpds; unixpd < eunixpd; unixpd++) {
-        PRInt32 osfd = unixpd->osfd;
-        if (unixpd->in_flags & _PR_UNIX_POLL_READ) {
-            FD_SET(osfd, &_PR_FD_READ_SET(me->cpu));
-            _PR_FD_READ_CNT(me->cpu)[osfd]++;
-        }
-        if (unixpd->in_flags & _PR_UNIX_POLL_WRITE) {
-            FD_SET(osfd, &_PR_FD_WRITE_SET(me->cpu));
-            (_PR_FD_WRITE_CNT(me->cpu))[osfd]++;
-        }
-        if (unixpd->in_flags & _PR_UNIX_POLL_EXCEPT) {
-            FD_SET(osfd, &_PR_FD_EXCEPTION_SET(me->cpu));
-            (_PR_FD_EXCEPTION_CNT(me->cpu))[osfd]++;
-        }
-        if (osfd > _PR_IOQ_MAX_OSFD(me->cpu)) {
-            _PR_IOQ_MAX_OSFD(me->cpu) = osfd;
-        }
-    }
-#endif  /* !defined(_PR_USE_POLL) */
-
-    if (_PR_IOQ_TIMEOUT(me->cpu) > timeout) {
-        _PR_IOQ_TIMEOUT(me->cpu) = timeout;
-    }
-
-    _PR_IOQ_OSFD_CNT(me->cpu) += pdcnt;
-        
-    _PR_SLEEPQ_LOCK(me->cpu);
-    _PR_ADD_SLEEPQ(me, timeout);
-    me->state = _PR_IO_WAIT;
-    me->io_pending = PR_TRUE;
-    me->io_suspended = PR_FALSE;
-    _PR_SLEEPQ_UNLOCK(me->cpu);
-    _PR_THREAD_UNLOCK(me);
-    _PR_MD_IOQ_UNLOCK();
-
-    _PR_MD_WAIT(me, timeout);
-
-    me->io_pending = PR_FALSE;
-    me->io_suspended = PR_FALSE;
-
-    /*
-     * This thread should run on the same cpu on which it was blocked; when 
-     * the IO request times out the fd sets and fd counts for the
-     * cpu are updated below.
-     */
-    PR_ASSERT(me->cpu == io_cpu);
-
-    /*
-    ** If we timed out the pollq might still be on the ioq. Remove it
-    ** before continuing.
-    */
-    if (pq.on_ioq) {
-        _PR_MD_IOQ_LOCK();
-        /*
-         * Need to check pq.on_ioq again
-         */
-        if (pq.on_ioq) {
-            PR_REMOVE_LINK(&pq.links);
-#ifndef _PR_USE_POLL
-            eunixpd = unixpds + pdcnt;
-            for (unixpd = unixpds; unixpd < eunixpd; unixpd++) {
-                PRInt32 osfd = unixpd->osfd;
-                PRInt16 in_flags = unixpd->in_flags;
-
-                if (in_flags & _PR_UNIX_POLL_READ) {
-                    if (--(_PR_FD_READ_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_READ_SET(me->cpu));
-                }
-                if (in_flags & _PR_UNIX_POLL_WRITE) {
-                    if (--(_PR_FD_WRITE_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_WRITE_SET(me->cpu));
-                }
-                if (in_flags & _PR_UNIX_POLL_EXCEPT) {
-                    if (--(_PR_FD_EXCEPTION_CNT(me->cpu))[osfd] == 0)
-                        FD_CLR(osfd, &_PR_FD_EXCEPTION_SET(me->cpu));
-                }
-            }
-#endif  /* _PR_USE_POLL */
-            PR_ASSERT(pq.npds == pdcnt);
-            _PR_IOQ_OSFD_CNT(me->cpu) -= pdcnt;
-            PR_ASSERT(_PR_IOQ_OSFD_CNT(me->cpu) >= 0);
-        }
-        _PR_MD_IOQ_UNLOCK();
-    }
-    /* XXX Should we use _PR_FAST_INTSON or _PR_INTSON? */
-    if (1 == pdcnt) {
-        _PR_FAST_INTSON(is);
-    } else {
-        _PR_INTSON(is);
-    }
-
-    if (_PR_PENDING_INTERRUPT(me)) {
-        me->flags &= ~_PR_INTERRUPT;
-        PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
-        return -1;
-    }
-
-    rv = 0;
-    if (pq.on_ioq == PR_FALSE) {
-        /* Count the number of ready descriptors */
-        while (--pdcnt >= 0) {
-            if (unixpds->out_flags != 0) {
-                rv++;
-            }
-            unixpds++;
-        }
-    }
-
-    return rv;
-}
-
-/*
- * Unblock threads waiting for I/O
- *    used when interrupting threads
- *
- * NOTE: The thread lock should held when this function is called.
- * On return, the thread lock is released.
- */
-void _PR_Unblock_IO_Wait(PRThread *thr)
-{
-    int pri = thr->priority;
-    _PRCPU *cpu = thr->cpu;
- 
-    /*
-     * GLOBAL threads wakeup periodically to check for interrupt
-     */
-    if (_PR_IS_NATIVE_THREAD(thr)) {
-        _PR_THREAD_UNLOCK(thr); 
-        return;
-    }
-
-    PR_ASSERT(thr->flags & (_PR_ON_SLEEPQ | _PR_ON_PAUSEQ));
-    _PR_SLEEPQ_LOCK(cpu);
-    _PR_DEL_SLEEPQ(thr, PR_TRUE);
-    _PR_SLEEPQ_UNLOCK(cpu);
-
-    PR_ASSERT(!(thr->flags & _PR_IDLE_THREAD));
-    thr->state = _PR_RUNNABLE;
-    _PR_RUNQ_LOCK(cpu);
-    _PR_ADD_RUNQ(thr, cpu, pri);
-    _PR_RUNQ_UNLOCK(cpu);
-    _PR_THREAD_UNLOCK(thr);
-    _PR_MD_WAKEUP_WAITER(thr);
-}
-#endif  /* !defined(_PR_PTHREADS) */
-
-/*
- * When a nonblocking connect has completed, determine whether it
- * succeeded or failed, and if it failed, what the error code is.
- *
- * The function returns the error code.  An error code of 0 means
- * that the nonblocking connect succeeded.
- */
-
-int _MD_unix_get_nonblocking_connect_error(int osfd)
-{
-#if defined(NTO)
-    /* Neutrino does not support the SO_ERROR socket option */
-    PRInt32      rv;
-    PRNetAddr    addr;
-    _PRSockLen_t addrlen = sizeof(addr);
-
-    /* Test to see if we are using the Tiny TCP/IP Stack or the Full one. */
-    struct statvfs superblock;
-    rv = fstatvfs(osfd, &superblock);
-    if (rv == 0) {
-        if (strcmp(superblock.f_basetype, "ttcpip") == 0) {
-            /* Using the Tiny Stack! */
-            rv = getpeername(osfd, (struct sockaddr *) &addr,
-                    (_PRSockLen_t *) &addrlen);
-            if (rv == -1) {
-                int errno_copy = errno;    /* make a copy so I don't
-                                            * accidentally reset */
-
-                if (errno_copy == ENOTCONN) {
-                    struct stat StatInfo;
-                    rv = fstat(osfd, &StatInfo);
-                    if (rv == 0) {
-                        time_t current_time = time(NULL);
-
-                        /*
-                         * this is a real hack, can't explain why it
-                         * works it just does
-                         */
-                        if (abs(current_time - StatInfo.st_atime) < 5) {
-                            return ECONNREFUSED;
-                        } else {
-                            return ETIMEDOUT;
-                        }
-                    } else {
-                        return ECONNREFUSED;
-                    }
-                } else {
-                    return errno_copy;
-                }
-            } else {
-                /* No Error */
-                return 0;
-            }
-        } else {
-            /* Have the FULL Stack which supports SO_ERROR */
-            /* Hasn't been written yet, never been tested! */
-            /* Jerry.Kirk@Nexwarecorp.com */
-
-            int err;
-            _PRSockLen_t optlen = sizeof(err);
-
-            if (getsockopt(osfd, SOL_SOCKET, SO_ERROR,
-                    (char *) &err, &optlen) == -1) {
-                return errno;
-            } else {
-                return err;
-            }		
-        }
-    } else {
-        return ECONNREFUSED;
-    }	
-#elif defined(UNIXWARE)
-    /*
-     * getsockopt() fails with EPIPE, so use getmsg() instead.
-     */
-
-    int rv;
-    int flags = 0;
-    rv = getmsg(osfd, NULL, NULL, &flags);
-    PR_ASSERT(-1 == rv || 0 == rv);
-    if (-1 == rv && errno != EAGAIN && errno != EWOULDBLOCK) {
-        return errno;
-    }
-    return 0;  /* no error */
-#else
-    int err;
-    _PRSockLen_t optlen = sizeof(err);
-    if (getsockopt(osfd, SOL_SOCKET, SO_ERROR, (char *) &err, &optlen) == -1) {
-        return errno;
-    } else {
-        return err;
-    }
-#endif
-}
-
-/************************************************************************/
-
-/*
-** Special hacks for xlib. Xlib/Xt/Xm is not re-entrant nor is it thread
-** safe.  Unfortunately, neither is mozilla. To make these programs work
-** in a pre-emptive threaded environment, we need to use a lock.
-*/
-
-void PR_XLock(void)
-{
-    PR_EnterMonitor(_pr_Xfe_mon);
-}
-
-void PR_XUnlock(void)
-{
-    PR_ExitMonitor(_pr_Xfe_mon);
-}
-
-PRBool PR_XIsLocked(void)
-{
-    return (PR_InMonitor(_pr_Xfe_mon)) ? PR_TRUE : PR_FALSE;
-}
-
-void PR_XWait(int ms)
-{
-    PR_Wait(_pr_Xfe_mon, PR_MillisecondsToInterval(ms));
-}
-
-void PR_XNotify(void)
-{
-    PR_Notify(_pr_Xfe_mon);
-}
-
-void PR_XNotifyAll(void)
-{
-    PR_NotifyAll(_pr_Xfe_mon);
-}
-
-#if defined(HAVE_FCNTL_FILE_LOCKING)
-
-PRStatus
-_MD_LockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    struct flock arg;
-
-    arg.l_type = F_WRLCK;
-    arg.l_whence = SEEK_SET;
-    arg.l_start = 0;
-    arg.l_len = 0;  /* until EOF */
-    rv = fcntl(f, F_SETLKW, &arg);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_TLockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    struct flock arg;
-
-    arg.l_type = F_WRLCK;
-    arg.l_whence = SEEK_SET;
-    arg.l_start = 0;
-    arg.l_len = 0;  /* until EOF */
-    rv = fcntl(f, F_SETLK, &arg);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_UnlockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    struct flock arg;
-
-    arg.l_type = F_UNLCK;
-    arg.l_whence = SEEK_SET;
-    arg.l_start = 0;
-    arg.l_len = 0;  /* until EOF */
-    rv = fcntl(f, F_SETLK, &arg);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-#elif defined(HAVE_BSD_FLOCK)
-
-#include <sys/file.h>
-
-PRStatus
-_MD_LockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = flock(f, LOCK_EX);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_TLockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = flock(f, LOCK_EX|LOCK_NB);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_UnlockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = flock(f, LOCK_UN);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_FLOCK_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-#else
-
-PRStatus
-_MD_LockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = lockf(f, F_LOCK, 0);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_LOCKF_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_TLockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = lockf(f, F_TLOCK, 0);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_LOCKF_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus
-_MD_UnlockFile(PRInt32 f)
-{
-    PRInt32 rv;
-    rv = lockf(f, F_ULOCK, 0);
-    if (rv == 0)
-        return PR_SUCCESS;
-    _PR_MD_MAP_LOCKF_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-#endif
-
-PRStatus _MD_gethostname(char *name, PRUint32 namelen)
-{
-    PRIntn rv;
-
-    rv = gethostname(name, namelen);
-    if (0 == rv) {
-        return PR_SUCCESS;
-    }
-    _PR_MD_MAP_GETHOSTNAME_ERROR(_MD_ERRNO());
-    return PR_FAILURE;
-}
-
-PRStatus _MD_getsysinfo(PRSysInfo cmd, char *name, PRUint32 namelen)
-{
-	struct utsname info;
-
-	PR_ASSERT((cmd == PR_SI_SYSNAME) || (cmd == PR_SI_RELEASE));
-
-	if (uname(&info) == -1) {
-		_PR_MD_MAP_DEFAULT_ERROR(errno);
-    	return PR_FAILURE;
-	}
-	if (PR_SI_SYSNAME == cmd)
-		(void)PR_snprintf(name, namelen, info.sysname);
-	else if (PR_SI_RELEASE == cmd)
-		(void)PR_snprintf(name, namelen, info.release);
-	else
-		return PR_FAILURE;
-    return PR_SUCCESS;
-}
-
-/*
- *******************************************************************
- *
- * Memory-mapped files
- *
- *******************************************************************
- */
-
-PRStatus _MD_CreateFileMap(PRFileMap *fmap, PRInt64 size)
-{
-    PRFileInfo info;
-    PRUint32 sz;
-
-    LL_L2UI(sz, size);
-    if (sz) {
-        if (PR_GetOpenFileInfo(fmap->fd, &info) == PR_FAILURE) {
-            return PR_FAILURE;
-        }
-        if (sz > info.size) {
-            /*
-             * Need to extend the file
-             */
-            if (fmap->prot != PR_PROT_READWRITE) {
-                PR_SetError(PR_NO_ACCESS_RIGHTS_ERROR, 0);
-                return PR_FAILURE;
-            }
-            if (PR_Seek(fmap->fd, sz - 1, PR_SEEK_SET) == -1) {
-                return PR_FAILURE;
-            }
-            if (PR_Write(fmap->fd, "", 1) != 1) {
-                return PR_FAILURE;
-            }
-        }
-    }
-    if (fmap->prot == PR_PROT_READONLY) {
-        fmap->md.prot = PROT_READ;
-#ifdef OSF1V4_MAP_PRIVATE_BUG
-        /*
-         * Use MAP_SHARED to work around a bug in OSF1 V4.0D
-         * (QAR 70220 in the OSF_QAR database) that results in
-         * corrupted data in the memory-mapped region.  This
-         * bug is fixed in V5.0.
-         */
-        fmap->md.flags = MAP_SHARED;
-#else
-        fmap->md.flags = MAP_PRIVATE;
-#endif
-    } else if (fmap->prot == PR_PROT_READWRITE) {
-        fmap->md.prot = PROT_READ | PROT_WRITE;
-        fmap->md.flags = MAP_SHARED;
-    } else {
-        PR_ASSERT(fmap->prot == PR_PROT_WRITECOPY);
-        fmap->md.prot = PROT_READ | PROT_WRITE;
-        fmap->md.flags = MAP_PRIVATE;
-    }
-    return PR_SUCCESS;
-}
-
-void * _MD_MemMap(
-    PRFileMap *fmap,
-    PRInt64 offset,
-    PRUint32 len)
-{
-    PRInt32 off;
-    void *addr;
-
-    LL_L2I(off, offset);
-    if ((addr = mmap(0, len, fmap->md.prot, fmap->md.flags,
-        fmap->fd->secret->md.osfd, off)) == (void *) -1) {
-            _PR_MD_MAP_MMAP_ERROR(_MD_ERRNO());
-        addr = NULL;
-    }
-    return addr;
-}
-
-PRStatus _MD_MemUnmap(void *addr, PRUint32 len)
-{
-    if (munmap(addr, len) == 0) {
-        return PR_SUCCESS;
-    } else {
-    if (errno == EINVAL) {
-            PR_SetError(PR_INVALID_ARGUMENT_ERROR, errno);
-    } else {
-        PR_SetError(PR_UNKNOWN_ERROR, errno);
-    }
-        return PR_FAILURE;
-    }
-}
-
-PRStatus _MD_CloseFileMap(PRFileMap *fmap)
-{
-    if ( PR_TRUE == fmap->md.isAnonFM ) {
-        PRStatus rc = PR_Close( fmap->fd );
-        if ( PR_FAILURE == rc ) {
-            PR_LOG( _pr_io_lm, PR_LOG_DEBUG,
-                ("_MD_CloseFileMap(): error closing anonymnous file map osfd"));
-            return PR_FAILURE;
-        }
-    }
-    PR_DELETE(fmap);
-    return PR_SUCCESS;
-}
-
-#if defined(_PR_NEED_FAKE_POLL)
-
-/*
- * Some platforms don't have poll().  For easier porting of code
- * that calls poll(), we emulate poll() using select().
- */
-
-int poll(struct pollfd *filedes, unsigned long nfds, int timeout)
-{
-    int i;
-    int rv;
-    int maxfd;
-    fd_set rd, wr, ex;
-    struct timeval tv, *tvp;
-
-    if (timeout < 0 && timeout != -1) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    if (timeout == -1) {
-        tvp = NULL;
-    } else {
-        tv.tv_sec = timeout / 1000;
-        tv.tv_usec = (timeout % 1000) * 1000;
-        tvp = &tv;
-    }
-
-    maxfd = -1;
-    FD_ZERO(&rd);
-    FD_ZERO(&wr);
-    FD_ZERO(&ex);
-
-    for (i = 0; i < nfds; i++) {
-        int osfd = filedes[i].fd;
-        int events = filedes[i].events;
-        PRBool fdHasEvent = PR_FALSE;
-
-        if (osfd < 0) {
-            continue;  /* Skip this osfd. */
-        }
-
-        /*
-         * Map the poll events to the select fd_sets.
-         *     POLLIN, POLLRDNORM  ===> readable
-         *     POLLOUT, POLLWRNORM ===> writable
-         *     POLLPRI, POLLRDBAND ===> exception
-         *     POLLNORM, POLLWRBAND (and POLLMSG on some platforms)
-         *     are ignored.
-         *
-         * The output events POLLERR and POLLHUP are never turned on.
-         * POLLNVAL may be turned on.
-         */
-
-        if (events & (POLLIN | POLLRDNORM)) {
-            FD_SET(osfd, &rd);
-            fdHasEvent = PR_TRUE;
-        }
-        if (events & (POLLOUT | POLLWRNORM)) {
-            FD_SET(osfd, &wr);
-            fdHasEvent = PR_TRUE;
-        }
-        if (events & (POLLPRI | POLLRDBAND)) {
-            FD_SET(osfd, &ex);
-            fdHasEvent = PR_TRUE;
-        }
-        if (fdHasEvent && osfd > maxfd) {
-            maxfd = osfd;
-        }
-    }
-
-    rv = select(maxfd + 1, &rd, &wr, &ex, tvp);
-
-    /* Compute poll results */
-    if (rv > 0) {
-        rv = 0;
-        for (i = 0; i < nfds; i++) {
-            PRBool fdHasEvent = PR_FALSE;
-
-            filedes[i].revents = 0;
-            if (filedes[i].fd < 0) {
-                continue;
-            }
-            if (FD_ISSET(filedes[i].fd, &rd)) {
-                if (filedes[i].events & POLLIN) {
-                    filedes[i].revents |= POLLIN;
-                }
-                if (filedes[i].events & POLLRDNORM) {
-                    filedes[i].revents |= POLLRDNORM;
-                }
-                fdHasEvent = PR_TRUE;
-            }
-            if (FD_ISSET(filedes[i].fd, &wr)) {
-                if (filedes[i].events & POLLOUT) {
-                    filedes[i].revents |= POLLOUT;
-                }
-                if (filedes[i].events & POLLWRNORM) {
-                    filedes[i].revents |= POLLWRNORM;
-                }
-                fdHasEvent = PR_TRUE;
-            }
-            if (FD_ISSET(filedes[i].fd, &ex)) {
-                if (filedes[i].events & POLLPRI) {
-                    filedes[i].revents |= POLLPRI;
-                }
-                if (filedes[i].events & POLLRDBAND) {
-                    filedes[i].revents |= POLLRDBAND;
-                }
-                fdHasEvent = PR_TRUE;
-            }
-            if (fdHasEvent) {
-                rv++;
-            }
-        }
-        PR_ASSERT(rv > 0);
-    } else if (rv == -1 && errno == EBADF) {
-        rv = 0;
-        for (i = 0; i < nfds; i++) {
-            filedes[i].revents = 0;
-            if (filedes[i].fd < 0) {
-                continue;
-            }
-            if (fcntl(filedes[i].fd, F_GETFL, 0) == -1) {
-                filedes[i].revents = POLLNVAL;
-                rv++;
-            }
-        }
-        PR_ASSERT(rv > 0);
-    }
-    PR_ASSERT(-1 != timeout || rv != 0);
-
-    return rv;
-}
-#endif /* _PR_NEED_FAKE_POLL */