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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/edk/system/channel_manager.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/message_loop/message_loop_proxy.h"
namespace mojo {
namespace system {
namespace {
void ShutdownChannelHelper(const ChannelInfo& channel_info) {
if (base::MessageLoopProxy::current() ==
channel_info.channel_thread_task_runner) {
channel_info.channel->Shutdown();
} else {
channel_info.channel->WillShutdownSoon();
channel_info.channel_thread_task_runner->PostTask(
FROM_HERE, base::Bind(&Channel::Shutdown, channel_info.channel));
}
}
} // namespace
ChannelManager::ChannelManager() {
}
ChannelManager::~ChannelManager() {
// No need to take the lock.
for (const auto& map_elem : channel_infos_)
ShutdownChannelHelper(map_elem.second);
}
ChannelId ChannelManager::AddChannel(
scoped_refptr<Channel> channel,
scoped_refptr<base::TaskRunner> channel_thread_task_runner) {
ChannelId channel_id = GetChannelId(channel.get());
{
base::AutoLock locker(lock_);
DCHECK(channel_infos_.find(channel_id) == channel_infos_.end());
channel_infos_[channel_id] =
ChannelInfo(channel, channel_thread_task_runner);
}
channel->SetChannelManager(this);
return channel_id;
}
void ChannelManager::WillShutdownChannel(ChannelId channel_id) {
GetChannelInfo(channel_id).channel->WillShutdownSoon();
}
void ChannelManager::ShutdownChannel(ChannelId channel_id) {
ChannelInfo channel_info;
{
base::AutoLock locker(lock_);
auto it = channel_infos_.find(channel_id);
DCHECK(it != channel_infos_.end());
channel_info.Swap(&it->second);
channel_infos_.erase(it);
}
ShutdownChannelHelper(channel_info);
}
ChannelInfo ChannelManager::GetChannelInfo(ChannelId channel_id) {
base::AutoLock locker(lock_);
auto it = channel_infos_.find(channel_id);
DCHECK(it != channel_infos_.end());
return it->second;
}
} // namespace system
} // namespace mojo
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