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      1 /*
      2     SDL - Simple DirectMedia Layer
      3     Copyright (C) 1997-2012 Sam Lantinga
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Lesser General Public
      7     License as published by the Free Software Foundation; either
      8     version 2.1 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     Lesser General Public License for more details.
     14 
     15     You should have received a copy of the GNU Lesser General Public
     16     License along with this library; if not, write to the Free Software
     17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19     Sam Lantinga
     20     slouken (at) libsdl.org
     21 */
     22 #include "SDL_config.h"
     23 
     24 /* IRIX thread management routines for SDL */
     25 
     26 #include <errno.h>
     27 #include <signal.h>
     28 #include <sys/types.h>
     29 #include <sys/wait.h>
     30 #include <sys/prctl.h>
     31 
     32 #include "SDL_thread.h"
     33 #include "../SDL_systhread.h"
     34 
     35 
     36 static int sig_list[] = {
     37 	SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCLD, SIGWINCH,
     38 	SIGVTALRM, SIGPROF, 0
     39 };
     40 
     41 
     42 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
     43 {
     44 	/* Create the thread and go! */
     45 	if ( sproc(SDL_RunThread, PR_SALL, args) < 0 ) {
     46 		SDL_SetError("Not enough resources to create thread");
     47 		return(-1);
     48 	}
     49 	return(0);
     50 }
     51 
     52 void SDL_SYS_SetupThread(void)
     53 {
     54 	int i;
     55 	sigset_t mask;
     56 
     57 	/* Mask asynchronous signals for this thread */
     58 	sigemptyset(&mask);
     59 	for ( i=0; sig_list[i]; ++i ) {
     60 		sigaddset(&mask, sig_list[i]);
     61 	}
     62 	sigprocmask(SIG_BLOCK, &mask, NULL);
     63 }
     64 
     65 /* WARNING:  This may not work for systems with 64-bit pid_t */
     66 Uint32 SDL_ThreadID(void)
     67 {
     68 	return((Uint32)getpid());
     69 }
     70 
     71 /* WARNING:  This may not work for systems with 64-bit pid_t */
     72 void SDL_WaitThread(SDL_Thread *thread, int *status)
     73 {
     74 	errno = 0;
     75 	while ( errno != ECHILD ) {
     76 		waitpid(thread->handle, NULL, 0);
     77 	}
     78 }
     79 
     80 /* WARNING:  This may not work for systems with 64-bit pid_t */
     81 void SDL_KillThread(SDL_Thread *thread)
     82 {
     83 	kill(thread->handle, SIGKILL);
     84 }
     85 
     86