ipc/chromium/src/base/platform_thread_win.cc@6474c204b198 (annotated)
ipc/chromium/src/base/platform_thread_win.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #include "base/platform_thread.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "base/logging.h" |
| michael@0 | 8 | #include "base/win_util.h" |
| michael@0 | 9 | |
| michael@0 | 10 | namespace { |
| michael@0 | 11 | |
| michael@0 | 12 | // The information on how to set the thread name comes from |
| michael@0 | 13 | // a MSDN article: http://msdn2.microsoft.com/en-us/library/xcb2z8hs.aspx |
| michael@0 | 14 | const DWORD kVCThreadNameException = 0x406D1388; |
| michael@0 | 15 | |
| michael@0 | 16 | typedef struct tagTHREADNAME_INFO { |
| michael@0 | 17 | DWORD dwType; // Must be 0x1000. |
| michael@0 | 18 | LPCSTR szName; // Pointer to name (in user addr space). |
| michael@0 | 19 | DWORD dwThreadID; // Thread ID (-1=caller thread). |
| michael@0 | 20 | DWORD dwFlags; // Reserved for future use, must be zero. |
| michael@0 | 21 | } THREADNAME_INFO; |
| michael@0 | 22 | |
| michael@0 | 23 | DWORD __stdcall ThreadFunc(void* closure) { |
| michael@0 | 24 | PlatformThread::Delegate* delegate = |
| michael@0 | 25 | static_cast<PlatformThread::Delegate*>(closure); |
| michael@0 | 26 | delegate->ThreadMain(); |
| michael@0 | 27 | return 0; |
| michael@0 | 28 | } |
| michael@0 | 29 | |
| michael@0 | 30 | } // namespace |
| michael@0 | 31 | |
| michael@0 | 32 | // static |
| michael@0 | 33 | PlatformThreadId PlatformThread::CurrentId() { |
| michael@0 | 34 | return GetCurrentThreadId(); |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | // static |
| michael@0 | 38 | void PlatformThread::YieldCurrentThread() { |
| michael@0 | 39 | ::Sleep(0); |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | // static |
| michael@0 | 43 | void PlatformThread::Sleep(int duration_ms) { |
| michael@0 | 44 | ::Sleep(duration_ms); |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | // static |
| michael@0 | 48 | void PlatformThread::SetName(const char* name) { |
| michael@0 | 49 | // The debugger needs to be around to catch the name in the exception. If |
| michael@0 | 50 | // there isn't a debugger, we are just needlessly throwing an exception. |
| michael@0 | 51 | if (!::IsDebuggerPresent()) |
| michael@0 | 52 | return; |
| michael@0 | 53 | |
| michael@0 | 54 | THREADNAME_INFO info; |
| michael@0 | 55 | info.dwType = 0x1000; |
| michael@0 | 56 | info.szName = name; |
| michael@0 | 57 | info.dwThreadID = CurrentId(); |
| michael@0 | 58 | info.dwFlags = 0; |
| michael@0 | 59 | |
| michael@0 | 60 | MOZ_SEH_TRY { |
| michael@0 | 61 | RaiseException(kVCThreadNameException, 0, sizeof(info)/sizeof(DWORD), |
| michael@0 | 62 | reinterpret_cast<DWORD_PTR*>(&info)); |
| michael@0 | 63 | } MOZ_SEH_EXCEPT(EXCEPTION_CONTINUE_EXECUTION) { |
| michael@0 | 64 | } |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | // static |
| michael@0 | 68 | bool PlatformThread::Create(size_t stack_size, Delegate* delegate, |
| michael@0 | 69 | PlatformThreadHandle* thread_handle) { |
| michael@0 | 70 | unsigned int flags = 0; |
| michael@0 | 71 | if (stack_size > 0 && win_util::GetWinVersion() >= win_util::WINVERSION_XP) { |
| michael@0 | 72 | flags = STACK_SIZE_PARAM_IS_A_RESERVATION; |
| michael@0 | 73 | } else { |
| michael@0 | 74 | stack_size = 0; |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | // Using CreateThread here vs _beginthreadex makes thread creation a bit |
| michael@0 | 78 | // faster and doesn't require the loader lock to be available. Our code will |
| michael@0 | 79 | // have to work running on CreateThread() threads anyway, since we run code |
| michael@0 | 80 | // on the Windows thread pool, etc. For some background on the difference: |
| michael@0 | 81 | // http://www.microsoft.com/msj/1099/win32/win321099.aspx |
| michael@0 | 82 | *thread_handle = CreateThread( |
| michael@0 | 83 | NULL, stack_size, ThreadFunc, delegate, flags, NULL); |
| michael@0 | 84 | return *thread_handle != NULL; |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | // static |
| michael@0 | 88 | bool PlatformThread::CreateNonJoinable(size_t stack_size, Delegate* delegate) { |
| michael@0 | 89 | PlatformThreadHandle thread_handle; |
| michael@0 | 90 | bool result = Create(stack_size, delegate, &thread_handle); |
| michael@0 | 91 | CloseHandle(thread_handle); |
| michael@0 | 92 | return result; |
| michael@0 | 93 | } |
| michael@0 | 94 | |
| michael@0 | 95 | // static |
| michael@0 | 96 | void PlatformThread::Join(PlatformThreadHandle thread_handle) { |
| michael@0 | 97 | DCHECK(thread_handle); |
| michael@0 | 98 | |
| michael@0 | 99 | // Wait for the thread to exit. It should already have terminated but make |
| michael@0 | 100 | // sure this assumption is valid. |
| michael@0 | 101 | DWORD result = WaitForSingleObject(thread_handle, INFINITE); |
| michael@0 | 102 | DCHECK_EQ(WAIT_OBJECT_0, result); |
| michael@0 | 103 | |
| michael@0 | 104 | CloseHandle(thread_handle); |
| michael@0 | 105 | } |
