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// Copyright (c) 2012 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 "ppapi/shared_impl/thread_aware_callback.h"
#include "base/callback.h"
#include "base/logging.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/ppb_message_loop_shared.h"
namespace ppapi {
namespace internal {
class ThreadAwareCallbackBase::Core : public base::RefCountedThreadSafe<Core> {
public:
Core() : aborted_(false) {
}
void MarkAsAborted() { aborted_ = true; }
void RunIfNotAborted(const base::Closure& closure) {
if (!aborted_)
CallWhileUnlocked(closure);
}
private:
friend class base::RefCountedThreadSafe<Core>;
~Core() {
}
bool aborted_;
};
ThreadAwareCallbackBase::ThreadAwareCallbackBase()
: target_loop_(PpapiGlobals::Get()->GetCurrentMessageLoop()),
core_(new Core()) {
DCHECK(target_loop_.get());
}
ThreadAwareCallbackBase::~ThreadAwareCallbackBase() {
core_->MarkAsAborted();
}
// static
bool ThreadAwareCallbackBase::HasTargetLoop() {
return !!PpapiGlobals::Get()->GetCurrentMessageLoop();
}
void ThreadAwareCallbackBase::InternalRunOnTargetThread(
const base::Closure& closure) {
if (target_loop_ != PpapiGlobals::Get()->GetCurrentMessageLoop()) {
target_loop_->PostClosure(
FROM_HERE,
RunWhileLocked(base::Bind(&Core::RunIfNotAborted, core_, closure)),
0);
} else {
CallWhileUnlocked(closure);
}
}
} // namespace internal
} // namespace ppapi
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