| 1 | /***************************************************************************** |
| 2 | * Copyright (C) 2013 x265 project |
| 3 | * |
| 4 | * Authors: Steve Borho <steve@borho.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 19 | * |
| 20 | * This program is also available under a commercial proprietary license. |
| 21 | * For more information, contact us at license @ x265.com |
| 22 | *****************************************************************************/ |
| 23 | |
| 24 | #include "threading.h" |
| 25 | |
| 26 | namespace x265 { |
| 27 | // x265 private namespace |
| 28 | |
| 29 | /* C shim for forced stack alignment */ |
| 30 | static void stackAlignMain(Thread *instance) |
| 31 | { |
| 32 | instance->threadMain(); |
| 33 | } |
| 34 | |
| 35 | #if _WIN32 |
| 36 | |
| 37 | static DWORD WINAPI ThreadShim(Thread *instance) |
| 38 | { |
| 39 | // defer processing to the virtual function implemented in the derived class |
| 40 | x265_stack_align(stackAlignMain, instance); |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | bool Thread::start() |
| 46 | { |
| 47 | DWORD threadId; |
| 48 | |
| 49 | thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadShim, this, 0, &threadId); |
| 50 | |
| 51 | return threadId > 0; |
| 52 | } |
| 53 | |
| 54 | void Thread::stop() |
| 55 | { |
| 56 | if (thread) |
| 57 | WaitForSingleObject(thread, INFINITE); |
| 58 | } |
| 59 | |
| 60 | Thread::~Thread() |
| 61 | { |
| 62 | if (thread) |
| 63 | CloseHandle(thread); |
| 64 | } |
| 65 | |
| 66 | #else /* POSIX / pthreads */ |
| 67 | |
| 68 | static void *ThreadShim(void *opaque) |
| 69 | { |
| 70 | // defer processing to the virtual function implemented in the derived class |
| 71 | Thread *instance = reinterpret_cast<Thread *>(opaque); |
| 72 | |
| 73 | x265_stack_align(stackAlignMain, instance); |
| 74 | |
| 75 | return NULL; |
| 76 | } |
| 77 | |
| 78 | bool Thread::start() |
| 79 | { |
| 80 | if (pthread_create(&thread, NULL, ThreadShim, this)) |
| 81 | { |
| 82 | thread = 0; |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | return true; |
| 87 | } |
| 88 | |
| 89 | void Thread::stop() |
| 90 | { |
| 91 | if (thread) |
| 92 | pthread_join(thread, NULL); |
| 93 | } |
| 94 | |
| 95 | Thread::~Thread() {} |
| 96 | |
| 97 | #endif // if _WIN32 |
| 98 | |
| 99 | Thread::Thread() |
| 100 | { |
| 101 | thread = 0; |
| 102 | } |
| 103 | |
| 104 | } |