This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_systhread.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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#include <pthread.h>
#include <signal.h>
#include "SDL_thread.h"
#include "../SDL_thread_c.h"
#include "../SDL_systhread.h"
/* List of signals to mask in the subthreads */
static int sig_list[] = {
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SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
SIGVTALRM, SIGPROF, 0
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#ifdef __RISCOS__
/* RISC OS needs to know the main thread for
* it's timer and event processing. */
int riscos_using_threads = 0;
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Uint32 riscos_main_thread = 0; /* Thread running events */
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static void *
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RunThread(void *data)
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SDL_RunThread(data);
pthread_exit((void *) 0);
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return ((void *) 0); /* Prevent compiler warning */
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SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
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pthread_attr_t type;
/* Set the thread attributes */
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if (pthread_attr_init(&type) != 0) {
SDL_SetError("Couldn't initialize pthread attributes");
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return (-1);
}
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pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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/* Create the thread and go! */
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if (pthread_create(&thread->handle, &type, RunThread, args) != 0) {
SDL_SetError("Not enough resources to create thread");
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return (-1);
}
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#ifdef __RISCOS__
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if (riscos_using_threads == 0) {
riscos_using_threads = 1;
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riscos_main_thread = SDL_ThreadID();
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#endif
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SDL_SYS_SetupThread(void)
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int i;
sigset_t mask;
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/* Mask asynchronous signals for this thread */
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sigemptyset(&mask);
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for (i = 0; sig_list[i]; ++i) {
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sigaddset(&mask, sig_list[i]);
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pthread_sigmask(SIG_BLOCK, &mask, 0);
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#ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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/* Allow ourselves to be asynchronously cancelled */
{
int oldstate;
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pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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#endif
}
/* WARNING: This may not work for systems with 64-bit pid_t */
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SDL_ThreadID(void)
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return ((Uint32) pthread_self());
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SDL_SYS_WaitThread(SDL_Thread * thread)
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pthread_join(thread->handle, 0);
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SDL_SYS_KillThread(SDL_Thread * thread)
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{
#ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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pthread_cancel(thread->handle);
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#ifdef __FREEBSD__
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#warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
#endif
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pthread_kill(thread->handle, SIGKILL);
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/* vi: set ts=4 sw=4 expandtab: */