platform_thread_android.cc revision 90dce4d38c5ff5333bea97d859d4e484e27edf0c
190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// found in the LICENSE file. 490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/threading/platform_thread.h" 690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include <errno.h> 890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include <sys/resource.h> 990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/android/jni_android.h" 1190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/android/thread_utils.h" 1290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/lazy_instance.h" 1390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/logging.h" 1490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/threading/thread_id_name_manager.h" 1590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "base/tracked_objects.h" 1690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)#include "jni/ThreadUtils_jni.h" 1790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 1890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)namespace base { 1990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 2090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)namespace { 2190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)int ThreadNiceValue(ThreadPriority priority) { 2290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // These nice values are taken from Android, which uses nice 2390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // values like linux, but defines some preset nice values. 2490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_AUDIO = -16 2590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_BACKGROUND = 10 2690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_DEFAULT = 0; 2790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_DISPLAY = -4; 2890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_FOREGROUND = -2; 2990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_LESS_FAVORABLE = 1; 3090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_LOWEST = 19; 3190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_MORE_FAVORABLE = -1; 3290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_URGENT_AUDIO = -19; 3390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Process.THREAD_PRIORITY_URGENT_DISPLAY = -8; 3490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // We use -6 for display, but we may want to split this 3590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // into urgent (-8) and non-urgent (-4). 3690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) static const int threadPriorityAudio = -16; 3790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) static const int threadPriorityBackground = 10; 3890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) static const int threadPriorityDefault = 0; 3990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) static const int threadPriorityDisplay = -6; 4090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) switch (priority) { 4190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case kThreadPriority_RealtimeAudio: 4290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return threadPriorityAudio; 4390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case kThreadPriority_Background: 4490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return threadPriorityBackground; 4590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case kThreadPriority_Normal: 4690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return threadPriorityDefault; 4790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) case kThreadPriority_Display: 4890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return threadPriorityDisplay; 4990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) default: 5090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) NOTREACHED() << "Unknown priority."; 5190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return 0; 5290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 5390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 5490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} // namespace 5590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 5690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)//static 5790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void PlatformThread::SetThreadPriority(PlatformThreadHandle handle, 5890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) ThreadPriority priority) { 5990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // On Android, we set the Audio priority through JNI as Audio priority 6090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // will also allow the process to run while it is backgrounded. 6190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (priority == kThreadPriority_RealtimeAudio) { 6290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) JNIEnv* env = base::android::AttachCurrentThread(); 6390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) Java_ThreadUtils_setThreadPriorityAudio(env, PlatformThread::CurrentId()); 6490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return; 6590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) } 6690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 6790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // setpriority(2) will set a thread's priority if it is passed a tid as 6890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // the 'process identifier', not affecting the rest of the threads in the 6990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // process. Setting this priority will only succeed if the user has been 7090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // granted permission to adjust nice values on the system. 7190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) DCHECK_NE(handle.id_, kInvalidThreadId); 7290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) int kNiceSetting = ThreadNiceValue(priority); 7390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (setpriority(PRIO_PROCESS, handle.id_, kNiceSetting)) 7490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) LOG(ERROR) << "Failed to set nice value of thread to " << kNiceSetting; 7590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 7690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 7790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void PlatformThread::SetName(const char* name) { 7890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); 7990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) tracked_objects::ThreadData::InitializeThreadContext(name); 8090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 8190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 8290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 8390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void InitThreading() { 8490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 8590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 8690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void InitOnThread() { 8790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Threads on linux/android may inherit their priority from the thread 8890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // where they were created. This sets all new threads to the default. 8990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PlatformThread::SetThreadPriority(PlatformThread::CurrentHandle(), 9090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) kThreadPriority_Normal); 9190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 9290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 9390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)void TerminateOnThread() { 9490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) base::android::DetachFromVM(); 9590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 9690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 9790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)size_t GetDefaultThreadStackSize(const pthread_attr_t& attributes) { 9890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return 0; 9990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 10090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 10190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)bool RegisterThreadUtils(JNIEnv* env) { 10290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return RegisterNativesImpl(env); 10390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 10490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 10590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} // namespace base 106