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annotate src/thread/pthread/SDL_systhread.c @ 1433:bb6839704ed6

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SDL_windows.h is no longer necessary
author Sam Lantinga <slouken@libsdl.org>
date Sat, 25 Feb 2006 22:18:25 +0000
parents d910939febfa
children 1e8582152d44
rev   line source
1361
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include <pthread.h>
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25 #include <signal.h>
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26
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27 #include "SDL_thread.h"
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28 #include "../SDL_thread_c.h"
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29 #include "../SDL_systhread.h"
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30
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31 /* List of signals to mask in the subthreads */
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32 static int sig_list[] = {
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33 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
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34 SIGVTALRM, SIGPROF, 0
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35 };
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36
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37
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38 static void *RunThread(void *data)
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39 {
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40 SDL_RunThread(data);
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41 pthread_exit((void*)0);
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42 return((void *)0); /* Prevent compiler warning */
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43 }
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44
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45 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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46 {
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47 pthread_attr_t type;
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48
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49 /* Set the thread attributes */
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50 if ( pthread_attr_init(&type) != 0 ) {
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51 SDL_SetError("Couldn't initialize pthread attributes");
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52 return(-1);
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53 }
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54 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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55
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56 /* Create the thread and go! */
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57 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
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58 SDL_SetError("Not enough resources to create thread");
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59 return(-1);
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60 }
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61 return(0);
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62 }
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63
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64 void SDL_SYS_SetupThread(void)
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65 {
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66 int i;
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67 sigset_t mask;
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68
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69 /* Mask asynchronous signals for this thread */
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70 sigemptyset(&mask);
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71 for ( i=0; sig_list[i]; ++i ) {
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72 sigaddset(&mask, sig_list[i]);
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73 }
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74 pthread_sigmask(SIG_BLOCK, &mask, 0);
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75
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76 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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77 /* Allow ourselves to be asynchronously cancelled */
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78 { int oldstate;
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79 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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80 }
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81 #endif
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82 }
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83
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84 /* WARNING: This may not work for systems with 64-bit pid_t */
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85 Uint32 SDL_ThreadID(void)
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86 {
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87 return((Uint32)pthread_self());
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88 }
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89
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90 void SDL_SYS_WaitThread(SDL_Thread *thread)
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91 {
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92 pthread_join(thread->handle, 0);
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93 }
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94
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95 void SDL_SYS_KillThread(SDL_Thread *thread)
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96 {
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97 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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98 pthread_cancel(thread->handle);
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99 #else
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100 #ifdef __FREEBSD__
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101 #warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
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102 #endif
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103 pthread_kill(thread->handle, SIGKILL);
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104 #endif
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105 }