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98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/threading/platform_thread.h"
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#include <errno.h>
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#include <sched.h>
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#include "base/lazy_instance.h"
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#include "base/logging.h"
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#include "base/threading/thread_id_name_manager.h"
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#include "base/tracked_objects.h"
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#if !defined(OS_NACL)
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#include <pthread.h>
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#include <sys/prctl.h>
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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namespace base {
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namespace internal {
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namespace {
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#if !defined(OS_NACL)
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const struct sched_param kRealTimePrio = {8};
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#endif
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} // namespace
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const ThreadPriorityToNiceValuePair kThreadPriorityToNiceValueMap[4] = {
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{ThreadPriority::BACKGROUND, 10},
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{ThreadPriority::NORMAL, 0},
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{ThreadPriority::DISPLAY, -6},
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{ThreadPriority::REALTIME_AUDIO, -10},
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}
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bool SetCurrentThreadPriorityForPlatform(ThreadPriority priority) {
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#if !defined(OS_NACL)
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return priority == ThreadPriority::REALTIME_AUDIO &&
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pthread_setschedparam(pthread_self(), SCHED_RR, &kRealTimePrio) == 0;
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#else
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return false;
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#endif
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}
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bool GetCurrentThreadPriorityForPlatform(ThreadPriority* priority) {
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#if !defined(OS_NACL)
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int maybe_sched_rr = 0;
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struct sched_param maybe_realtime_prio = {0};
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if (pthread_getschedparam(pthread_self(), &maybe_sched_rr,
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&maybe_realtime_prio) == 0 &&
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maybe_sched_rr == SCHED_RR &&
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maybe_realtime_prio.sched_priority == kRealTimePrio.sched_priority) {
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*priority = ThreadPriority::REALTIME_AUDIO;
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return true;
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}
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#endif
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return false;
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}
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} // namespace internal
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// static
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void PlatformThread::SetName(const std::string& name) {
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ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name);
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tracked_objects::ThreadData::InitializeThreadContext(name);
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#if !defined(OS_NACL)
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// On FreeBSD we can get the thread names to show up in the debugger by
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// setting the process name for the LWP. We don't want to do this for the
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// main thread because that would rename the process, causing tools like
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// killall to stop working.
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if (PlatformThread::CurrentId() == getpid())
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return;
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setproctitle("%s", name.c_str());
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#endif // !defined(OS_NACL)
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}
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void InitThreading() {}
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void InitOnThread() {}
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void TerminateOnThread() {}
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size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) {
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#if !defined(THREAD_SANITIZER)
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return 0;
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#else
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// ThreadSanitizer bloats the stack heavily. Evidence has been that the
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// default stack size isn't enough for some browser tests.
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return 2 * (1 << 23); // 2 times 8192K (the default stack size on Linux).
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#endif
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}
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} // namespace base
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