diff options
Diffstat (limited to 'webrtc/system_wrappers/source/thread_posix.cc')
-rw-r--r-- | webrtc/system_wrappers/source/thread_posix.cc | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/webrtc/system_wrappers/source/thread_posix.cc b/webrtc/system_wrappers/source/thread_posix.cc deleted file mode 100644 index 32ab13c780..0000000000 --- a/webrtc/system_wrappers/source/thread_posix.cc +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include "webrtc/system_wrappers/source/thread_posix.h" - -#include <algorithm> - -#include <errno.h> -#include <unistd.h> -#ifdef WEBRTC_LINUX -#include <linux/unistd.h> -#include <sched.h> -#include <sys/types.h> -#endif - -#include "webrtc/base/checks.h" -#include "webrtc/base/platform_thread.h" -#include "webrtc/system_wrappers/include/critical_section_wrapper.h" -#include "webrtc/system_wrappers/include/event_wrapper.h" -#include "webrtc/system_wrappers/include/sleep.h" -#include "webrtc/system_wrappers/include/trace.h" - -namespace webrtc { -namespace { -struct ThreadAttributes { - ThreadAttributes() { pthread_attr_init(&attr); } - ~ThreadAttributes() { pthread_attr_destroy(&attr); } - pthread_attr_t* operator&() { return &attr; } - pthread_attr_t attr; -}; -} // namespace - -int ConvertToSystemPriority(ThreadPriority priority, int min_prio, - int max_prio) { - RTC_DCHECK(max_prio - min_prio > 2); - const int top_prio = max_prio - 1; - const int low_prio = min_prio + 1; - - switch (priority) { - case kLowPriority: - return low_prio; - case kNormalPriority: - // The -1 ensures that the kHighPriority is always greater or equal to - // kNormalPriority. - return (low_prio + top_prio - 1) / 2; - case kHighPriority: - return std::max(top_prio - 2, low_prio); - case kHighestPriority: - return std::max(top_prio - 1, low_prio); - case kRealtimePriority: - return top_prio; - } - RTC_DCHECK(false); - return low_prio; -} - -// static -void* ThreadPosix::StartThread(void* param) { - static_cast<ThreadPosix*>(param)->Run(); - return 0; -} - -ThreadPosix::ThreadPosix(ThreadRunFunction func, void* obj, - const char* thread_name) - : run_function_(func), - obj_(obj), - stop_event_(false, false), - name_(thread_name ? thread_name : "webrtc"), - thread_(0) { - RTC_DCHECK(name_.length() < 64); -} - -uint32_t ThreadWrapper::GetThreadId() { - return rtc::CurrentThreadId(); -} - -ThreadPosix::~ThreadPosix() { - RTC_DCHECK(thread_checker_.CalledOnValidThread()); -} - -// TODO(pbos): Make Start void, calling code really doesn't support failures -// here. -bool ThreadPosix::Start() { - RTC_DCHECK(thread_checker_.CalledOnValidThread()); - RTC_DCHECK(!thread_) << "Thread already started?"; - - ThreadAttributes attr; - // Set the stack stack size to 1M. - pthread_attr_setstacksize(&attr, 1024 * 1024); - RTC_CHECK_EQ(0, pthread_create(&thread_, &attr, &StartThread, this)); - return true; -} - -bool ThreadPosix::Stop() { - RTC_DCHECK(thread_checker_.CalledOnValidThread()); - if (!thread_) - return true; - - stop_event_.Set(); - RTC_CHECK_EQ(0, pthread_join(thread_, nullptr)); - thread_ = 0; - - return true; -} - -bool ThreadPosix::SetPriority(ThreadPriority priority) { - RTC_DCHECK(thread_checker_.CalledOnValidThread()); - if (!thread_) - return false; -#if defined(WEBRTC_CHROMIUM_BUILD) && defined(WEBRTC_LINUX) - // TODO(tommi): Switch to the same mechanism as Chromium uses for - // changing thread priorities. - return true; -#else -#ifdef WEBRTC_THREAD_RR - const int policy = SCHED_RR; -#else - const int policy = SCHED_FIFO; -#endif - const int min_prio = sched_get_priority_min(policy); - const int max_prio = sched_get_priority_max(policy); - if (min_prio == -1 || max_prio == -1) { - WEBRTC_TRACE(kTraceError, kTraceUtility, -1, - "unable to retreive min or max priority for threads"); - return false; - } - - if (max_prio - min_prio <= 2) - return false; - - sched_param param; - param.sched_priority = ConvertToSystemPriority(priority, min_prio, max_prio); - if (pthread_setschedparam(thread_, policy, ¶m) != 0) { - WEBRTC_TRACE( - kTraceError, kTraceUtility, -1, "unable to set thread priority"); - return false; - } - - return true; -#endif // defined(WEBRTC_CHROMIUM_BUILD) && defined(WEBRTC_LINUX) -} - -void ThreadPosix::Run() { - if (!name_.empty()) { - // Setting the thread name may fail (harmlessly) if running inside a - // sandbox. Ignore failures if they happen. - rtc::SetCurrentThreadName(name_.substr(0, 63).c_str()); - } - - // It's a requirement that for successful thread creation that the run - // function be called at least once (see RunFunctionIsCalled unit test), - // so to fullfill that requirement, we use a |do| loop and not |while|. - do { - if (!run_function_(obj_)) - break; - } while (!stop_event_.Wait(0)); -} - -} // namespace webrtc |