| /* |
| * 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. |
| */ |
| |
| // Author: morlovich@google.com (Maksim Orlovich) |
| |
| #include "pagespeed/kernel/thread/pthread_thread_system.h" |
| |
| #ifdef linux |
| #include <features.h> |
| #endif |
| #include <pthread.h> |
| |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/posix_timer.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/thread.h" |
| #include "pagespeed/kernel/base/thread_system.h" |
| #include "pagespeed/kernel/thread/pthread_mutex.h" |
| #include "pagespeed/kernel/thread/pthread_rw_lock.h" |
| |
| namespace net_instaweb { |
| |
| namespace { |
| |
| class PthreadId : public ThreadSystem::ThreadId { |
| public: |
| PthreadId() : id_(pthread_self()) {} |
| virtual ~PthreadId() {} |
| |
| virtual bool IsEqual(const ThreadId& that) const { |
| return pthread_equal(id_, dynamic_cast<const PthreadId&>(that).id_) != 0; |
| } |
| |
| virtual bool IsCurrentThread() const { |
| return pthread_equal(id_, pthread_self()) != 0; |
| } |
| |
| private: |
| pthread_t id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PthreadId); |
| }; |
| |
| } // namespace |
| |
| class Timer; |
| |
| class PthreadThreadImpl : public ThreadSystem::ThreadImpl { |
| public: |
| PthreadThreadImpl(PthreadThreadSystem* thread_system, |
| ThreadSystem::Thread* wrapper, |
| ThreadSystem::ThreadFlags flags) |
| : thread_system_(thread_system), |
| wrapper_(wrapper), |
| flags_(flags) { |
| } |
| |
| virtual ~PthreadThreadImpl() { |
| } |
| |
| virtual bool StartImpl() { |
| int result; |
| |
| pthread_attr_t attr; |
| result = pthread_attr_init(&attr); |
| if (result != 0) { |
| return false; |
| } |
| |
| int mode = PTHREAD_CREATE_DETACHED; |
| if ((flags_ & ThreadSystem::kJoinable) != 0) { |
| mode = PTHREAD_CREATE_JOINABLE; |
| } |
| |
| result = pthread_attr_setdetachstate(&attr, mode); |
| if (result != 0) { |
| return false; |
| } |
| |
| result = pthread_create(&thread_obj_, &attr, InvokeRun, this); |
| if (result != 0) { |
| return false; |
| } |
| |
| pthread_attr_destroy(&attr); |
| return true; |
| } |
| |
| virtual void JoinImpl() { |
| void* ignored; |
| pthread_join(thread_obj_, &ignored); |
| } |
| |
| private: |
| static void* InvokeRun(void* self_ptr) { |
| PthreadThreadImpl* self = static_cast<PthreadThreadImpl*>(self_ptr); |
| self->thread_system_->BeforeThreadRunHook(); |
| #ifdef __GLIBC_PREREQ |
| #if __GLIBC_PREREQ(2, 12) |
| std::string name = self->wrapper_->name(); |
| // We need to truncate any long names to 15 characters or they might |
| // not take. |
| if (name.length() > 15) { |
| name = name.substr(0, 15); |
| } |
| pthread_setname_np(self->thread_obj_, name.c_str()); |
| #endif |
| #endif |
| self->wrapper_->Run(); |
| return NULL; |
| } |
| |
| PthreadThreadSystem* thread_system_; |
| ThreadSystem::Thread* wrapper_; |
| ThreadSystem::ThreadFlags flags_; |
| pthread_t thread_obj_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PthreadThreadImpl); |
| }; |
| |
| PthreadThreadSystem::PthreadThreadSystem() { |
| } |
| |
| PthreadThreadSystem::~PthreadThreadSystem() { |
| } |
| |
| ThreadSystem::CondvarCapableMutex* PthreadThreadSystem::NewMutex() { |
| return new PthreadMutex; |
| } |
| |
| ThreadSystem::RWLock* PthreadThreadSystem::NewRWLock() { |
| return new PthreadRWLock; |
| } |
| |
| void PthreadThreadSystem::BeforeThreadRunHook() { |
| } |
| |
| ThreadSystem::ThreadImpl* PthreadThreadSystem::NewThreadImpl( |
| ThreadSystem::Thread* wrapper, ThreadSystem::ThreadFlags flags) { |
| return new PthreadThreadImpl(this, wrapper, flags); |
| } |
| |
| Timer* PthreadThreadSystem::NewTimer() { |
| return new PosixTimer; |
| } |
| |
| ThreadSystem::ThreadId* PthreadThreadSystem::GetThreadId() const { |
| return new PthreadId; |
| } |
| |
| } // namespace net_instaweb |