FUNCTIONS

1. SDL_SYS_CreateThread
2. SDL_SYS_SetupThread
3. SDL_ThreadID
4. SDL_WaitThread
5. SDL_KillThread

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
   4 
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Library General Public
   7     License as published by the Free Software Foundation; either
   8     version 2 of the License, or (at your option) any later version.
   9 
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Library General Public License for more details.
  14 
  15     You should have received a copy of the GNU Library General Public
  16     License along with this library; if not, write to the Free
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 
  19     Sam Lantinga
  20     slouken@devolution.com
  21 */
  23 #ifdef SAVE_RCSID
  24 static char rcsid =
  25  "@(#) $Id: SDL_systhread.c,v 1.2.2.2 2001/02/10 07:20:04 hercules Exp $";
  26 #endif
  28 /* IRIX thread management routines for SDL */
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <signal.h>
  33 #include <sys/types.h>
  34 #include <sys/wait.h>
  35 #include <sys/prctl.h>
  37 #include "SDL_error.h"
  38 #include "SDL_thread.h"
  39 #include "SDL_systhread.h"
  42 static int sig_list[] = {
  43         SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCLD, SIGWINCH,
  44         SIGVTALRM, SIGPROF, 0
  45 };
  48 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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  49 {
  50         /* Create the thread and go! */
  51         if ( sproc(SDL_RunThread, PR_SALL, args) < 0 ) {
SDL_SetError("Not enough resources to create thread");
  53                 return(-1);
  54         }
  55         return(0);
  56 }
  58 void SDL_SYS_SetupThread(void)
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  59 {
  60         int i;
  61         sigset_t mask;
  63         /* Mask asynchronous signals for this thread */
  64         sigemptyset(&mask);
  65         for ( i=0; sig_list[i]; ++i ) {
  66                 sigaddset(&mask, sig_list[i]);
  67         }
  68         sigprocmask(SIG_BLOCK, &mask, NULL);
  69 }
  71 /* WARNING:  This may not work for systems with 64-bit pid_t */
  72 Uint32 SDL_ThreadID(void)
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  73 {
  74         return((Uint32)getpid());
  75 }
  77 /* WARNING:  This may not work for systems with 64-bit pid_t */
  78 void SDL_WaitThread(SDL_Thread *thread, int *status)
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  79 {
  80         errno = 0;
  81         while ( errno != ECHILD ) {
  82                 waitpid(thread->handle, NULL, 0);
  83         }
  84 }
  86 /* WARNING:  This may not work for systems with 64-bit pid_t */
  87 void SDL_KillThread(SDL_Thread *thread)
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  88 {
  89         kill(thread->handle, SIGKILL);
  90 }