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https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
51ec78121a
These new classes encasulate file-descriptor watchers, basic file descriptors, and socket connections. Each class contains callback methods for it's implemented functionality. Users should inherit from the classes and overload the callback with their own code.
120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "UnixFdWatcher.h"
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#ifdef CHROMIUM_LOG
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#undef CHROMIUM_LOG
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#endif
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#if defined(MOZ_WIDGET_GONK)
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#include <android/log.h>
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#define CHROMIUM_LOG(args...) __android_log_print(ANDROID_LOG_INFO, "I/O", args);
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#else
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#include <stdio.h>
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#define IODEBUG true
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#define CHROMIUM_LOG(args...) if (IODEBUG) printf(args);
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#endif
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namespace mozilla {
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namespace ipc {
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UnixFdWatcher::~UnixFdWatcher()
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{
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NS_WARN_IF(IsOpen()); /* mFd should have been closed already */
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}
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void
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UnixFdWatcher::Close()
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{
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MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
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if (NS_WARN_IF(!IsOpen())) {
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/* mFd should have been open */
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return;
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}
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OnClose();
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RemoveWatchers(READ_WATCHER|WRITE_WATCHER);
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mFd.dispose();
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}
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void
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UnixFdWatcher::AddWatchers(unsigned long aWatchers, bool aPersistent)
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{
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MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
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MOZ_ASSERT(IsOpen());
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// Before we add a watcher, we need to remove it! Removing is always
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// safe, but adding the same watcher twice can lead to endless loops
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// inside libevent.
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RemoveWatchers(aWatchers);
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if (aWatchers & READ_WATCHER) {
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MessageLoopForIO::current()->WatchFileDescriptor(
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mFd,
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aPersistent,
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MessageLoopForIO::WATCH_READ,
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&mReadWatcher,
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this);
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}
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if (aWatchers & WRITE_WATCHER) {
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MessageLoopForIO::current()->WatchFileDescriptor(
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mFd,
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aPersistent,
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MessageLoopForIO::WATCH_WRITE,
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&mWriteWatcher,
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this);
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}
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}
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void
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UnixFdWatcher::RemoveWatchers(unsigned long aWatchers)
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{
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MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
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MOZ_ASSERT(IsOpen());
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if (aWatchers & READ_WATCHER) {
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mReadWatcher.StopWatchingFileDescriptor();
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}
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if (aWatchers & WRITE_WATCHER) {
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mWriteWatcher.StopWatchingFileDescriptor();
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}
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}
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void
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UnixFdWatcher::OnError(const char* aFunction, int aErrno)
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{
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MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
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CHROMIUM_LOG("%s failed with error %d (%s)",
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aFunction, aErrno, strerror(aErrno));
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}
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UnixFdWatcher::UnixFdWatcher(MessageLoop* aIOLoop)
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: mIOLoop(aIOLoop)
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{
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MOZ_ASSERT(mIOLoop);
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}
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UnixFdWatcher::UnixFdWatcher(MessageLoop* aIOLoop, int aFd)
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: mIOLoop(aIOLoop)
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, mFd(aFd)
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{
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MOZ_ASSERT(mIOLoop);
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}
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void
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UnixFdWatcher::SetFd(int aFd)
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{
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MOZ_ASSERT(MessageLoopForIO::current() == mIOLoop);
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MOZ_ASSERT(!IsOpen());
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mFd = aFd;
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}
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}
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}
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