Delete bundled copy of NSS and replace with README.

nspr/pr/src/io/prpolevt.c

Index: nspr/pr/src/io/prpolevt.c
diff --git a/nspr/pr/src/io/prpolevt.c b/nspr/pr/src/io/prpolevt.c
deleted file mode 100644
index ac3eb101ae3e590afa978959c730617af46c2bc4..0000000000000000000000000000000000000000
--- a/nspr/pr/src/io/prpolevt.c
+++ /dev/null
@@ -1,230 +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/. */
-
-/*
- *********************************************************************
- *
- * Pollable events
- *
- * Pollable events are implemented using layered I/O.  The only
- * I/O methods that are implemented for pollable events are poll
- * and close.  No other methods can be invoked on a pollable
- * event.
- *
- * A pipe or socket pair is created and the pollable event layer
- * is pushed onto the read end.  A pointer to the write end is
- * saved in the PRFilePrivate structure of the pollable event.
- *
- *********************************************************************
- */
-
-#include "prinit.h"
-#include "prio.h"
-#include "prmem.h"
-#include "prerror.h"
-#include "prlog.h"
-
-/*
- * These internal functions are declared in primpl.h,
- * but we can't include primpl.h because the definition
- * of struct PRFilePrivate in this file (for the pollable
- * event layer) will conflict with the definition of
- * struct PRFilePrivate in primpl.h (for the NSPR layer).
- */
-extern PRIntn _PR_InvalidInt(void);
-extern PRInt64 _PR_InvalidInt64(void);
-extern PRStatus _PR_InvalidStatus(void);
-extern PRFileDesc *_PR_InvalidDesc(void);
-
-/*
- * PRFilePrivate structure for the NSPR pollable events layer
- */
-struct PRFilePrivate {
-    PRFileDesc *writeEnd;  /* the write end of the pipe/socketpair */
-};
-
-static PRStatus PR_CALLBACK _pr_PolEvtClose(PRFileDesc *fd);
-
-static PRInt16 PR_CALLBACK _pr_PolEvtPoll(
-    PRFileDesc *fd, PRInt16 in_flags, PRInt16 *out_flags);
-
-static PRIOMethods _pr_polevt_methods = {
-    PR_DESC_LAYERED,
-    _pr_PolEvtClose,
-    (PRReadFN)_PR_InvalidInt,
-    (PRWriteFN)_PR_InvalidInt,
-    (PRAvailableFN)_PR_InvalidInt,
-    (PRAvailable64FN)_PR_InvalidInt64,
-    (PRFsyncFN)_PR_InvalidStatus,
-    (PRSeekFN)_PR_InvalidInt,
-    (PRSeek64FN)_PR_InvalidInt64,
-    (PRFileInfoFN)_PR_InvalidStatus,
-    (PRFileInfo64FN)_PR_InvalidStatus,
-    (PRWritevFN)_PR_InvalidInt,        
-    (PRConnectFN)_PR_InvalidStatus,        
-    (PRAcceptFN)_PR_InvalidDesc,        
-    (PRBindFN)_PR_InvalidStatus,        
-    (PRListenFN)_PR_InvalidStatus,        
-    (PRShutdownFN)_PR_InvalidStatus,    
-    (PRRecvFN)_PR_InvalidInt,        
-    (PRSendFN)_PR_InvalidInt,        
-    (PRRecvfromFN)_PR_InvalidInt,    
-    (PRSendtoFN)_PR_InvalidInt,        
-    _pr_PolEvtPoll,
-    (PRAcceptreadFN)_PR_InvalidInt,   
-    (PRTransmitfileFN)_PR_InvalidInt, 
-    (PRGetsocknameFN)_PR_InvalidStatus,    
-    (PRGetpeernameFN)_PR_InvalidStatus,    
-    (PRReservedFN)_PR_InvalidInt,    
-    (PRReservedFN)_PR_InvalidInt,    
-    (PRGetsocketoptionFN)_PR_InvalidStatus,
-    (PRSetsocketoptionFN)_PR_InvalidStatus,
-    (PRSendfileFN)_PR_InvalidInt, 
-    (PRConnectcontinueFN)_PR_InvalidStatus, 
-    (PRReservedFN)_PR_InvalidInt, 
-    (PRReservedFN)_PR_InvalidInt, 
-    (PRReservedFN)_PR_InvalidInt, 
-    (PRReservedFN)_PR_InvalidInt
-};
-
-static PRDescIdentity _pr_polevt_id;
-static PRCallOnceType _pr_polevt_once_control;
-static PRStatus PR_CALLBACK _pr_PolEvtInit(void);
-
-static PRInt16 PR_CALLBACK _pr_PolEvtPoll(
-    PRFileDesc *fd, PRInt16 in_flags, PRInt16 *out_flags)
-{
-    return (fd->lower->methods->poll)(fd->lower, in_flags, out_flags);
-}
-
-static PRStatus PR_CALLBACK _pr_PolEvtInit(void)
-{
-    _pr_polevt_id = PR_GetUniqueIdentity("NSPR pollable events");
-    if (PR_INVALID_IO_LAYER == _pr_polevt_id) {
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-#if !defined(XP_UNIX)
-#define USE_TCP_SOCKETPAIR
-#endif
-
-PR_IMPLEMENT(PRFileDesc *) PR_NewPollableEvent(void)
-{
-    PRFileDesc *event;
-    PRFileDesc *fd[2]; /* fd[0] is the read end; fd[1] is the write end */
-#ifdef USE_TCP_SOCKETPAIR
-    PRSocketOptionData socket_opt;
-    PRStatus rv;
-#endif
-
-    fd[0] = fd[1] = NULL;
-
-    if (PR_CallOnce(&_pr_polevt_once_control, _pr_PolEvtInit) == PR_FAILURE) {
-        return NULL;
-    }
-
-    event = PR_CreateIOLayerStub(_pr_polevt_id, &_pr_polevt_methods);
-    if (NULL == event) {
-        goto errorExit;
-    } 
-    event->secret = PR_NEW(PRFilePrivate);
-    if (event->secret == NULL) {
-        PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
-        goto errorExit;
-    }
-
-#ifndef USE_TCP_SOCKETPAIR
-    if (PR_CreatePipe(&fd[0], &fd[1]) == PR_FAILURE) {
-        fd[0] = fd[1] = NULL;
-        goto errorExit;
-    }
-#else
-    if (PR_NewTCPSocketPair(fd) == PR_FAILURE) {
-        fd[0] = fd[1] = NULL;
-        goto errorExit;
-    }
-	/*
-	 * set the TCP_NODELAY option to reduce notification latency
-	 */
-    socket_opt.option = PR_SockOpt_NoDelay;
-    socket_opt.value.no_delay = PR_TRUE;
-    rv = PR_SetSocketOption(fd[1], &socket_opt);
-    PR_ASSERT(PR_SUCCESS == rv);
-#endif
-
-    event->secret->writeEnd = fd[1];
-    if (PR_PushIOLayer(fd[0], PR_TOP_IO_LAYER, event) == PR_FAILURE) {
-        goto errorExit;
-    }
-
-    return fd[0];
-
-errorExit:
-    if (fd[0]) {
-        PR_Close(fd[0]);
-        PR_Close(fd[1]);
-    }
-    if (event) {
-        PR_DELETE(event->secret);
-        event->dtor(event);
-    }
-    return NULL;
-}
-
-static PRStatus PR_CALLBACK _pr_PolEvtClose(PRFileDesc *fd)
-{
-    PRFileDesc *event;
-
-    event = PR_PopIOLayer(fd, PR_TOP_IO_LAYER);
-    PR_ASSERT(NULL == event->higher && NULL == event->lower);
-    PR_Close(fd);
-    PR_Close(event->secret->writeEnd);
-    PR_DELETE(event->secret);
-    event->dtor(event);
-    return PR_SUCCESS;
-}
-
-PR_IMPLEMENT(PRStatus) PR_DestroyPollableEvent(PRFileDesc *event)
-{
-    return PR_Close(event);
-}
-
-static const char magicChar = '\x38';
-
-PR_IMPLEMENT(PRStatus) PR_SetPollableEvent(PRFileDesc *event)
-{
-    if (PR_Write(event->secret->writeEnd, &magicChar, 1) != 1) {
-        return PR_FAILURE;
-    }
-    return PR_SUCCESS;
-}
-
-PR_IMPLEMENT(PRStatus) PR_WaitForPollableEvent(PRFileDesc *event)
-{
-    char buf[1024];
-    PRInt32 nBytes;
-#ifdef DEBUG
-    PRIntn i;
-#endif
-
-    nBytes = PR_Read(event->lower, buf, sizeof(buf));
-    if (nBytes == -1) {
-        return PR_FAILURE;
-    }
-
-#ifdef DEBUG
-    /*
-     * Make sure people do not write to the pollable event fd
-     * directly.
-     */
-    for (i = 0; i < nBytes; i++) {
-        PR_ASSERT(buf[i] == magicChar);
-    }
-#endif
-
-    return PR_SUCCESS;
-}