| Index: mozilla/nsprpub/pr/src/io/prpolevt.c
|
| ===================================================================
|
| --- mozilla/nsprpub/pr/src/io/prpolevt.c (revision 191424)
|
| +++ mozilla/nsprpub/pr/src/io/prpolevt.c (working copy)
|
| @@ -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;
|
| -}
|
|
|