Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#include "mozilla/ipc/IOThread.h"
#include "mozilla/ipc/NodeController.h"
#if defined(XP_WIN)
# include <objbase.h>
#endif
namespace mozilla {
namespace ipc {
//
// IOThread
//
/* static */
IOThread* IOThread::sSingleton = nullptr;
IOThread::IOThread(const char* aName) : base::Thread(aName) {
sSingleton = this;
}
IOThread::~IOThread() {
MOZ_ASSERT(!IsRunning());
sSingleton = nullptr;
}
void IOThread::StartThread() {
// Failure to create the IPC I/O thread is unrecoverable.
// NOTE: This will block if successful for the `Init()` virtual method to have
// been run.
if (!StartWithOptions(
base::Thread::Options{MessageLoop::TYPE_IO, /* stack size */ 0})) {
MOZ_CRASH("Failed to create IPC I/O Thread");
}
}
void IOThread::StopThread() {
// This will block until CleanUp() has been called, and the IPC I/O thread has
// been joined.
Stop();
}
//
// IOThreadParent
//
IOThreadParent::IOThreadParent() : IOThread("IPC I/O Parent") { StartThread(); }
IOThreadParent::~IOThreadParent() { StopThread(); }
void IOThreadParent::Init() {
#if defined(XP_WIN)
// Initializes the COM library on the current thread.
CoInitialize(nullptr);
#endif
// Initialize the ports library in the current thread.
NodeController::InitBrokerProcess();
}
void IOThreadParent::CleanUp() {
NodeController::CleanUp();
#if defined(XP_WIN)
// Closes the COM library on the current thread. CoInitialize must
// be balanced by a corresponding call to CoUninitialize.
CoUninitialize();
#endif
}
//
// IOThreadChild
//
IOThreadChild::IOThreadChild(IPC::Channel::ChannelHandle aClientHandle,
base::ProcessId aParentPid)
: IOThread("IPC I/O Child"),
mClientHandle(std::move(aClientHandle)),
mParentPid(std::move(aParentPid)) {
StartThread();
}
IOThreadChild::~IOThreadChild() { StopThread(); }
void IOThreadChild::Init() {
auto channel = MakeUnique<IPC::Channel>(
std::move(mClientHandle), IPC::Channel::MODE_CLIENT, mParentPid);
#if defined(XP_WIN)
channel->StartAcceptingHandles(IPC::Channel::MODE_CLIENT);
#elif defined(XP_DARWIN)
channel->StartAcceptingMachPorts(IPC::Channel::MODE_CLIENT);
#endif
mInitialPort = mozilla::ipc::NodeController::InitChildProcess(
std::move(channel), mParentPid);
}
void IOThreadChild::CleanUp() { NodeController::CleanUp(); }
} // namespace ipc
} // namespace mozilla