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author | rubidium <rubidium@openttd.org> | 2009-09-01 10:07:22 +0000 |
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committer | rubidium <rubidium@openttd.org> | 2009-09-01 10:07:22 +0000 |
commit | 07d2af338e237889ff453a3a774522b9b0021439 (patch) | |
tree | 373ccc2eecf1aa917f24008e4d25535413dc4eb2 /src/thread/thread_pthread.cpp | |
parent | 5a3b2f0d02ddb7fedbca29a3e5e68dec28c887af (diff) | |
download | openttd-07d2af338e237889ff453a3a774522b9b0021439.tar.xz |
(svn r17339) -Codechange: move thread related files to their own directory (like done for video, music, sound, etc)
Diffstat (limited to 'src/thread/thread_pthread.cpp')
-rw-r--r-- | src/thread/thread_pthread.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/thread/thread_pthread.cpp b/src/thread/thread_pthread.cpp new file mode 100644 index 000000000..483b71c0f --- /dev/null +++ b/src/thread/thread_pthread.cpp @@ -0,0 +1,124 @@ +/* $Id$ */ + +/* + * This file is part of OpenTTD. + * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. + * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. + */ + +/** @file thread_pthread.cpp POSIX pthread implementation of Threads. */ + +#include "../stdafx.h" +#include "thread.h" +#include <pthread.h> + +/** + * POSIX pthread version for ThreadObject. + */ +class ThreadObject_pthread : public ThreadObject { +private: + pthread_t thread; ///< System thread identifier. + OTTDThreadFunc proc; ///< External thread procedure. + void *param; ///< Parameter for the external thread procedure. + bool self_destruct; ///< Free ourselves when done? + +public: + /** + * Create a pthread and start it, calling proc(param). + */ + ThreadObject_pthread(OTTDThreadFunc proc, void *param, bool self_destruct) : + thread(0), + proc(proc), + param(param), + self_destruct(self_destruct) + { + pthread_create(&this->thread, NULL, &stThreadProc, this); + } + + /* virtual */ bool Exit() + { + assert(pthread_self() == this->thread); + /* For now we terminate by throwing an error, gives much cleaner cleanup */ + throw OTTDThreadExitSignal(); + } + + /* virtual */ void Join() + { + /* You cannot join yourself */ + assert(pthread_self() != this->thread); + pthread_join(this->thread, NULL); + this->thread = 0; + } +private: + /** + * On thread creation, this function is called, which calls the real startup + * function. This to get back into the correct instance again. + */ + static void *stThreadProc(void *thr) + { + ((ThreadObject_pthread *)thr)->ThreadProc(); + pthread_exit(NULL); + } + + /** + * A new thread is created, and this function is called. Call the custom + * function of the creator of the thread. + */ + void ThreadProc() + { + /* Call the proc of the creator to continue this thread */ + try { + this->proc(this->param); + } catch (OTTDThreadExitSignal e) { + } catch (...) { + NOT_REACHED(); + } + + if (self_destruct) { + pthread_detach(pthread_self()); + delete this; + } + } +}; + +/* static */ bool ThreadObject::New(OTTDThreadFunc proc, void *param, ThreadObject **thread) +{ + ThreadObject *to = new ThreadObject_pthread(proc, param, thread == NULL); + if (thread != NULL) *thread = to; + return true; +} + +/** + * POSIX pthread version of ThreadMutex. + */ +class ThreadMutex_pthread : public ThreadMutex { +private: + pthread_mutex_t mutex; + +public: + ThreadMutex_pthread() + { + pthread_mutex_init(&this->mutex, NULL); + } + + /* virtual */ ~ThreadMutex_pthread() + { + pthread_mutex_destroy(&this->mutex); + } + + /* virtual */ void BeginCritical() + { + pthread_mutex_lock(&this->mutex); + } + + /* virtual */ void EndCritical() + { + pthread_mutex_unlock(&this->mutex); + } +}; + +/* static */ ThreadMutex *ThreadMutex::New() +{ + return new ThreadMutex_pthread(); +} |