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Location: cpp/openttd-patchpack/source/src/thread/thread_pthread.cpp
r19931:c8510dc6a120
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(svn r24887) -Update from WebTranslator v3.0:
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simplified_chinese - 1 changes by chenwt0315
danish - 13 changes by Elias
esperanto - 25 changes by ernie13
greek - 1 changes by Rubidium
hebrew - 19 changes by naf869
icelandic - 109 changes by Stimrol
indonesian - 26 changes by H2
korean - 6 changes by telk5093
luxembourgish - 25 changes by Phreeze
polish - 2 changes by wojteks86
serbian - 5 changes by voodoo84
swedish - 16 changes by spacejens
turkish - 17 changes by kutzun
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | /* $Id$ */
/*
* 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>
#include <errno.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) {
} 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; ///< The actual mutex.
pthread_cond_t condition; ///< Data for conditional waiting.
pthread_mutexattr_t attr; ///< Attributes set for the mutex.
public:
ThreadMutex_pthread()
{
pthread_mutexattr_init(&this->attr);
pthread_mutexattr_settype(&this->attr, PTHREAD_MUTEX_ERRORCHECK);
pthread_mutex_init(&this->mutex, &this->attr);
pthread_cond_init(&this->condition, NULL);
}
/* virtual */ ~ThreadMutex_pthread()
{
int err = pthread_cond_destroy(&this->condition);
assert(err != EBUSY);
err = pthread_mutex_destroy(&this->mutex);
assert(err != EBUSY);
}
/* virtual */ void BeginCritical()
{
int err = pthread_mutex_lock(&this->mutex);
assert(err == 0);
}
/* virtual */ void EndCritical()
{
int err = pthread_mutex_unlock(&this->mutex);
assert(err == 0);
}
/* virtual */ void WaitForSignal()
{
int err = pthread_cond_wait(&this->condition, &this->mutex);
assert(err == 0);
}
/* virtual */ void SendSignal()
{
int err = pthread_cond_signal(&this->condition);
assert(err == 0);
}
};
/* static */ ThreadMutex *ThreadMutex::New()
{
return new ThreadMutex_pthread();
}
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