15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/platform_thread.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/debug/alias.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/debug/profiler.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/threading/thread_id_name_manager.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread_restrictions.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/tracked_objects.h" 135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/win/scoped_handle.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/win/windows_version.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The information on how to set the thread name comes from 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// a MSDN article: http://msdn2.microsoft.com/en-us/library/xcb2z8hs.aspx 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const DWORD kVCThreadNameException = 0x406D1388; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct tagTHREADNAME_INFO { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD dwType; // Must be 0x1000. 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LPCSTR szName; // Pointer to name (in user addr space). 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD dwThreadID; // Thread ID (-1=caller thread). 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD dwFlags; // Reserved for future use, must be zero. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} THREADNAME_INFO; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This function has try handling, so it is separated out of its caller. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SetNameInternal(PlatformThreadId thread_id, const char* name) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) THREADNAME_INFO info; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) info.dwType = 0x1000; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) info.szName = name; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) info.dwThreadID = thread_id; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) info.dwFlags = 0; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) __try { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RaiseException(kVCThreadNameException, 0, sizeof(info)/sizeof(DWORD), 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<DWORD_PTR*>(&info)); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } __except(EXCEPTION_CONTINUE_EXECUTION) { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct ThreadParams { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThread::Delegate* delegate; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool joinable; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)DWORD __stdcall ThreadFunc(void* params) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadParams* thread_params = static_cast<ThreadParams*>(params); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThread::Delegate* delegate = thread_params->delegate; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!thread_params->joinable) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::ThreadRestrictions::SetSingletonAllowed(false); 5690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Retrieve a copy of the thread handle to use as the key in the 585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // thread name mapping. 5990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PlatformThreadHandle::Handle platform_handle; 605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) BOOL did_dup = DuplicateHandle(GetCurrentProcess(), 615d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetCurrentThread(), 625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) GetCurrentProcess(), 635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) &platform_handle, 645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 0, 655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FALSE, 665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DUPLICATE_SAME_ACCESS); 675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 685d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) win::ScopedHandle scoped_platform_handle; 695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 705d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (did_dup) { 715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scoped_platform_handle.Set(platform_handle); 725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ThreadIdNameManager::GetInstance()->RegisterThread( 735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scoped_platform_handle.Get(), 745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PlatformThread::CurrentId()); 755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 7690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete thread_params; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delegate->ThreadMain(); 7990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (did_dup) { 815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ThreadIdNameManager::GetInstance()->RemoveName( 825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scoped_platform_handle.Get(), 835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PlatformThread::CurrentId()); 845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// CreateThreadInternal() matches PlatformThread::Create(), except that 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// |out_thread_handle| may be NULL, in which case a non-joinable thread is 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// created. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CreateThreadInternal(size_t stack_size, 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThread::Delegate* delegate, 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThreadHandle* out_thread_handle) { 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int flags = 0; 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (stack_size > 0 && base::win::GetVersion() >= base::win::VERSION_XP) { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) flags = STACK_SIZE_PARAM_IS_A_RESERVATION; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) stack_size = 0; 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadParams* params = new ThreadParams; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) params->delegate = delegate; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) params->joinable = out_thread_handle != NULL; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Using CreateThread here vs _beginthreadex makes thread creation a bit 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // faster and doesn't require the loader lock to be available. Our code will 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // have to work running on CreateThread() threads anyway, since we run code 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // on the Windows thread pool, etc. For some background on the difference: 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // http://www.microsoft.com/msj/1099/win32/win321099.aspx 11190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) void* thread_handle = CreateThread( 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, stack_size, ThreadFunc, params, flags, NULL); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!thread_handle) { 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete params; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (out_thread_handle) 11990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) *out_thread_handle = PlatformThreadHandle(thread_handle); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseHandle(thread_handle); 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PlatformThreadId PlatformThread::CurrentId() { 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GetCurrentThreadId(); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 133cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)PlatformThreadRef PlatformThread::CurrentRef() { 134cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return PlatformThreadRef(GetCurrentThreadId()); 135cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 136cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 137cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// static 13890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)PlatformThreadHandle PlatformThread::CurrentHandle() { 13990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) NOTIMPLEMENTED(); // See OpenThread() 14090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) return PlatformThreadHandle(); 14190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)} 14290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 14390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// static 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PlatformThread::YieldCurrentThread() { 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ::Sleep(0); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PlatformThread::Sleep(TimeDelta duration) { 15058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // When measured with a high resolution clock, Sleep() sometimes returns much 15158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // too early. We may need to call it repeatedly to get the desired duration. 15258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) TimeTicks end = TimeTicks::Now() + duration; 15358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) TimeTicks now; 15458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) while ((now = TimeTicks::Now()) < end) 15558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ::Sleep((end - now).InMillisecondsRoundedUp()); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PlatformThread::SetName(const char* name) { 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ThreadIdNameManager::GetInstance()->SetName(CurrentId(), name); 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On Windows only, we don't need to tell the profiler about the "BrokerEvent" 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // thread, as it exists only in the chrome.exe image, and never spawns or runs 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // tasks (items which could be profiled). This test avoids the notification, 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // which would also (as a side effect) initialize the profiler in this unused 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // context, including setting up thread local storage, etc. The performance 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // impact is not terrible, but there is no reason to do initialize it. 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (0 != strcmp(name, "BrokerEvent")) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tracked_objects::ThreadData::InitializeThreadContext(name); 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The debugger needs to be around to catch the name in the exception. If 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // there isn't a debugger, we are just needlessly throwing an exception. 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If this image file is instrumented, we raise the exception anyway 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to provide the profiler with human-readable thread names. 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!::IsDebuggerPresent() && !base::debug::IsBinaryInstrumented()) 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetNameInternal(CurrentId(), name); 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char* PlatformThread::GetName() { 1832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return ThreadIdNameManager::GetInstance()->GetName(CurrentId()); 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PlatformThread::Create(size_t stack_size, Delegate* delegate, 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThreadHandle* thread_handle) { 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(thread_handle); 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return CreateThreadInternal(stack_size, delegate, thread_handle); 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PlatformThread::CreateWithPriority(size_t stack_size, Delegate* delegate, 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PlatformThreadHandle* thread_handle, 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadPriority priority) { 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool result = Create(stack_size, delegate, thread_handle); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result) 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetThreadPriority(*thread_handle, priority); 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return result; 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PlatformThread::CreateNonJoinable(size_t stack_size, Delegate* delegate) { 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return CreateThreadInternal(stack_size, delegate, NULL); 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PlatformThread::Join(PlatformThreadHandle thread_handle) { 21090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) DCHECK(thread_handle.handle_); 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(willchan): Enable this check once I can get it to work for Windows 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // shutdown. 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Joining another thread may block the current thread for a long time, since 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the thread referred to by |thread_handle| may still be running long-lived / 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // blocking tasks. 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if 0 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::ThreadRestrictions::AssertIOAllowed(); 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Wait for the thread to exit. It should already have terminated but make 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sure this assumption is valid. 22290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) DWORD result = WaitForSingleObject(thread_handle.handle_, INFINITE); 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result != WAIT_OBJECT_0) { 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Debug info for bug 127931. 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD error = GetLastError(); 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) debug::Alias(&error); 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) debug::Alias(&result); 22890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) debug::Alias(&thread_handle.handle_); 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(false); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) CloseHandle(thread_handle.handle_); 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void PlatformThread::SetThreadPriority(PlatformThreadHandle handle, 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadPriority priority) { 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (priority) { 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kThreadPriority_Normal: 24090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) ::SetThreadPriority(handle.handle_, THREAD_PRIORITY_NORMAL); 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kThreadPriority_RealtimeAudio: 24390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) ::SetThreadPriority(handle.handle_, THREAD_PRIORITY_TIME_CRITICAL); 24490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) break; 24590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) default: 24690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) NOTREACHED() << "Unknown priority."; 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 252