зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
2.4 KiB
C++
120 строки
2.4 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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*/
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#include "mozilla/ipc/DataSocket.h"
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#ifdef MOZ_TASK_TRACER
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#include "GeckoTaskTracer.h"
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#endif
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#ifdef MOZ_TASK_TRACER
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using namespace mozilla::tasktracer;
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#endif
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namespace mozilla {
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namespace ipc {
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//
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// DataSocketIO
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//
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DataSocketIO::~DataSocketIO()
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{ }
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void
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DataSocketIO::EnqueueData(UnixSocketIOBuffer* aBuffer)
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{
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if (!aBuffer->GetSize()) {
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delete aBuffer; // delete empty data immediately
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return;
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}
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mOutgoingQ.AppendElement(aBuffer);
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}
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bool
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DataSocketIO::HasPendingData() const
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{
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return !mOutgoingQ.IsEmpty();
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}
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ssize_t
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DataSocketIO::ReceiveData(int aFd)
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{
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MOZ_ASSERT(aFd >= 0);
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UnixSocketIOBuffer* incoming;
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nsresult rv = QueryReceiveBuffer(&incoming);
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if (NS_FAILED(rv)) {
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/* an error occured */
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NS_DispatchToMainThread(new SocketIORequestClosingRunnable(this));
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return -1;
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}
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ssize_t res = incoming->Receive(aFd);
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if (res < 0) {
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/* an I/O error occured */
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DiscardBuffer();
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NS_DispatchToMainThread(new SocketIORequestClosingRunnable(this));
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return -1;
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} else if (!res) {
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/* EOF or peer shut down sending */
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DiscardBuffer();
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NS_DispatchToMainThread(new SocketIORequestClosingRunnable(this));
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return 0;
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}
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#ifdef MOZ_TASK_TRACER
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/* Make unix socket creation events to be the source events of TaskTracer,
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* and originate the rest correlation tasks from here.
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*/
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AutoSourceEvent taskTracerEvent(SourceEventType::Unixsocket);
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#endif
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ConsumeBuffer();
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return res;
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}
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nsresult
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DataSocketIO::SendPendingData(int aFd)
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{
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MOZ_ASSERT(aFd >= 0);
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while (HasPendingData()) {
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UnixSocketIOBuffer* outgoing = mOutgoingQ.ElementAt(0);
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ssize_t res = outgoing->Send(aFd);
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if (res < 0) {
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/* an I/O error occured */
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NS_DispatchToMainThread(new SocketIORequestClosingRunnable(this));
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return NS_ERROR_FAILURE;
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} else if (!res && outgoing->GetSize()) {
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/* I/O is currently blocked; try again later */
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return NS_OK;
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}
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if (!outgoing->GetSize()) {
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mOutgoingQ.RemoveElementAt(0);
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delete outgoing;
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}
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}
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return NS_OK;
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}
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DataSocketIO::DataSocketIO()
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{ }
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//
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// DataSocket
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//
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DataSocket::~DataSocket()
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{ }
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}
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}
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