| // Copyright 2011 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Authors: morlovich@google.com (Maksim Orlovich) |
| |
| #include "pagespeed/kernel/thread/scheduler_thread.h" |
| |
| #include "base/logging.h" |
| #include "pagespeed/kernel/base/abstract_mutex.h" |
| #include "pagespeed/kernel/base/function.h" |
| #include "pagespeed/kernel/thread/scheduler.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| #include "pagespeed/kernel/base/timer.h" |
| |
| namespace net_instaweb { |
| |
| // Helper returned by Scheduler::MakeDeleter, which signals the thread |
| // to exit and joins on it. |
| class SchedulerThread::CleanupFunction : public Function { |
| public: |
| explicit CleanupFunction(SchedulerThread* parent) : parent_(parent) {} |
| virtual ~CleanupFunction() {} |
| |
| protected: |
| virtual void Run() { |
| { |
| ScopedMutex lock(parent_->scheduler_->mutex()); |
| parent_->quit_ = true; |
| parent_->scheduler_->Signal(); |
| } |
| parent_->Join(); |
| delete parent_; |
| } |
| |
| virtual void Cancel() { |
| LOG(DFATAL) << "CleanupFunction does not expect to be cancelled"; |
| } |
| |
| private: |
| SchedulerThread* parent_; |
| DISALLOW_COPY_AND_ASSIGN(CleanupFunction); |
| }; |
| |
| SchedulerThread::SchedulerThread(ThreadSystem* thread_system, |
| Scheduler* scheduler) |
| : Thread(thread_system, "scheduler_thread", ThreadSystem::kJoinable), |
| quit_(false), |
| scheduler_(scheduler) {} |
| |
| SchedulerThread::~SchedulerThread() {} |
| |
| Function* SchedulerThread::MakeDeleter() { |
| return new CleanupFunction(this); |
| } |
| |
| void SchedulerThread::Run() { |
| ScopedMutex lock(scheduler_->mutex()); |
| while (!quit_) { |
| scheduler_->ProcessAlarmsOrWaitUs(255 * Timer::kSecondUs); |
| } |
| } |
| |
| } // namespace net_instaweb |