| // 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 "base/threading/platform_thread.h" |
| |
| #include <errno.h> |
| #include <sched.h> |
| |
| #include "base/lazy_instance.h" |
| #include "base/logging.h" |
| #include "base/threading/thread_id_name_manager.h" |
| #include "base/tracked_objects.h" |
| |
| #if !defined(OS_NACL) |
| #include <pthread.h> |
| #include <sys/prctl.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #endif |
| |
| namespace base { |
| |
| namespace internal { |
| |
| namespace { |
| #if !defined(OS_NACL) |
| const struct sched_param kRealTimePrio = {8}; |
| #endif |
| } // namespace |
| |
| const ThreadPriorityToNiceValuePair kThreadPriorityToNiceValueMap[4] = { |
| {ThreadPriority::BACKGROUND, 10}, |
| {ThreadPriority::NORMAL, 0}, |
| {ThreadPriority::DISPLAY, -6}, |
| {ThreadPriority::REALTIME_AUDIO, -10}, |
| } |
| |
| bool SetCurrentThreadPriorityForPlatform(ThreadPriority priority) { |
| #if !defined(OS_NACL) |
| return priority == ThreadPriority::REALTIME_AUDIO && |
| pthread_setschedparam(pthread_self(), SCHED_RR, &kRealTimePrio) == 0; |
| #else |
| return false; |
| #endif |
| } |
| |
| bool GetCurrentThreadPriorityForPlatform(ThreadPriority* priority) { |
| #if !defined(OS_NACL) |
| int maybe_sched_rr = 0; |
| struct sched_param maybe_realtime_prio = {0}; |
| if (pthread_getschedparam(pthread_self(), &maybe_sched_rr, |
| &maybe_realtime_prio) == 0 && |
| maybe_sched_rr == SCHED_RR && |
| maybe_realtime_prio.sched_priority == kRealTimePrio.sched_priority) { |
| *priority = ThreadPriority::REALTIME_AUDIO; |
| return true; |
| } |
| #endif |
| return false; |
| } |
| |
| } // namespace internal |
| |
| // static |
| void PlatformThread::SetName(const std::string& name) { |
| ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); |
| tracked_objects::ThreadData::InitializeThreadContext(name); |
| |
| #if !defined(OS_NACL) |
| // On FreeBSD we can get the thread names to show up in the debugger by |
| // setting the process name for the LWP. We don't want to do this for the |
| // main thread because that would rename the process, causing tools like |
| // killall to stop working. |
| if (PlatformThread::CurrentId() == getpid()) |
| return; |
| setproctitle("%s", name.c_str()); |
| #endif // !defined(OS_NACL) |
| } |
| |
| void InitThreading() {} |
| |
| void InitOnThread() {} |
| |
| void TerminateOnThread() {} |
| |
| size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) { |
| #if !defined(THREAD_SANITIZER) |
| return 0; |
| #else |
| // ThreadSanitizer bloats the stack heavily. Evidence has been that the |
| // default stack size isn't enough for some browser tests. |
| return 2 * (1 << 23); // 2 times 8192K (the default stack size on Linux). |
| #endif |
| } |
| |
| } // namespace base |