SDL_systhread.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 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
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_systhread.c,v 1.2 2002/04/22 21:38:03 wmay Exp $";
- #endif
- /*
- * GNU pth threads
- *
- * Patrice Mandin
- */
- #include "SDL_error.h"
- #include "SDL_thread.h"
- #include "SDL_systhread.h"
- #include <signal.h>
- #include <pth.h>
- /* List of signals to mask in the subthreads */
- static int sig_list[] = {
- SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
- SIGVTALRM, SIGPROF, 0
- };
- static void *RunThread(void *data)
- {
- SDL_RunThread(data);
- pth_exit((void*)0);
- return((void *)0); /* Prevent compiler warning */
- }
- int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
- {
- pth_attr_t type;
- /* Create a new attribute */
- type = pth_attr_new();
- if ( type == NULL ) {
- SDL_SetError("Couldn't initialize pth attributes");
- return(-1);
- }
- pth_attr_set(type, PTH_ATTR_JOINABLE, TRUE);
- /* Create the thread and go! */
- if ( pth_spawn(type, RunThread, args) == NULL ) {
- SDL_SetError("Not enough resources to create thread");
- return(-1);
- }
- return(0);
- }
- void SDL_SYS_SetupThread(void)
- {
- int i;
- sigset_t mask;
- int oldstate;
- /* Mask asynchronous signals for this thread */
- sigemptyset(&mask);
- for ( i=0; sig_list[i]; ++i ) {
- sigaddset(&mask, sig_list[i]);
- }
- pth_sigmask(SIG_BLOCK, &mask, 0);
- /* Allow ourselves to be asynchronously cancelled */
- pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate);
- }
- /* WARNING: This may not work for systems with 64-bit pid_t */
- Uint32 SDL_ThreadID(void)
- {
- return((Uint32)pth_self());
- }
- void SDL_SYS_WaitThread(SDL_Thread *thread)
- {
- pth_join(thread->handle, 0);
- }
- void SDL_SYS_KillThread(SDL_Thread *thread)
- {
- pth_cancel(thread->handle);
- pth_join(thread->handle, NULL);
- }