mirror of https://github.com/OpenTTD/OpenTTD.git
111 lines
3.0 KiB
C++
111 lines
3.0 KiB
C++
/* $Id$ */
|
|
|
|
/*
|
|
* 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>
|
|
|
|
#if defined(__APPLE__)
|
|
#include "../os/macosx/macos.h"
|
|
#endif
|
|
|
|
#include "../safeguards.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?
|
|
const char *name; ///< Name for the thread
|
|
|
|
public:
|
|
/**
|
|
* Create a pthread and start it, calling proc(param).
|
|
*/
|
|
ThreadObject_pthread(OTTDThreadFunc proc, void *param, bool self_destruct, const char *name) :
|
|
thread(0),
|
|
proc(proc),
|
|
param(param),
|
|
self_destruct(self_destruct),
|
|
name(name)
|
|
{
|
|
pthread_create(&this->thread, NULL, &stThreadProc, this);
|
|
}
|
|
|
|
bool Exit() override
|
|
{
|
|
assert(pthread_self() == this->thread);
|
|
/* For now we terminate by throwing an error, gives much cleaner cleanup */
|
|
throw OTTDThreadExitSignal();
|
|
}
|
|
|
|
void Join() override
|
|
{
|
|
/* 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 *self = (ThreadObject_pthread *) thr;
|
|
#if defined(__GLIBC__)
|
|
#if __GLIBC_PREREQ(2, 12)
|
|
if (self->name) {
|
|
pthread_setname_np(pthread_self(), self->name);
|
|
}
|
|
#endif
|
|
#endif
|
|
#if defined(__APPLE__)
|
|
MacOSSetThreadName(self->name);
|
|
#endif
|
|
self->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, const char *name)
|
|
{
|
|
ThreadObject *to = new ThreadObject_pthread(proc, param, thread == NULL, name);
|
|
if (thread != NULL) *thread = to;
|
|
return true;
|
|
}
|