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annotate src/thread/pthread/SDL_systhread.c @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
parents
children d910939febfa
rev   line source
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
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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
19418e4422cb New configure-based build system. Still work in progress, but much improved
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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
19418e4422cb New configure-based build system. Still work in progress, but much improved
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10 This library is distributed in the hope that it will be useful,
19418e4422cb New configure-based build system. Still work in progress, but much improved
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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
19418e4422cb New configure-based build system. Still work in progress, but much improved
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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
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23 #include <pthread.h>
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24 #include <signal.h>
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25
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26 #include "SDL_thread.h"
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27 #include "../SDL_thread_c.h"
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28 #include "../SDL_systhread.h"
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29
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30 /* List of signals to mask in the subthreads */
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31 static int sig_list[] = {
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32 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
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33 SIGVTALRM, SIGPROF, 0
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34 };
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35
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36
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37 static void *RunThread(void *data)
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38 {
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39 SDL_RunThread(data);
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40 pthread_exit((void*)0);
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41 return((void *)0); /* Prevent compiler warning */
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42 }
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43
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44 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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45 {
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46 pthread_attr_t type;
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47
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48 /* Set the thread attributes */
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49 if ( pthread_attr_init(&type) != 0 ) {
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50 SDL_SetError("Couldn't initialize pthread attributes");
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51 return(-1);
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52 }
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53 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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54
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55 /* Create the thread and go! */
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56 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
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57 SDL_SetError("Not enough resources to create thread");
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58 return(-1);
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59 }
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60 return(0);
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61 }
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62
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63 void SDL_SYS_SetupThread(void)
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64 {
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65 int i;
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66 sigset_t mask;
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67
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68 /* Mask asynchronous signals for this thread */
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69 sigemptyset(&mask);
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70 for ( i=0; sig_list[i]; ++i ) {
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71 sigaddset(&mask, sig_list[i]);
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72 }
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73 pthread_sigmask(SIG_BLOCK, &mask, 0);
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74
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75 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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76 /* Allow ourselves to be asynchronously cancelled */
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77 { int oldstate;
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78 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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79 }
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80 #endif
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81 }
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82
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83 /* WARNING: This may not work for systems with 64-bit pid_t */
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84 Uint32 SDL_ThreadID(void)
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85 {
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86 return((Uint32)pthread_self());
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87 }
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88
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89 void SDL_SYS_WaitThread(SDL_Thread *thread)
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90 {
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91 pthread_join(thread->handle, 0);
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92 }
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93
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94 void SDL_SYS_KillThread(SDL_Thread *thread)
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95 {
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96 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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97 pthread_cancel(thread->handle);
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98 #else
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99 #ifdef __FreeBSD__
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100 #warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
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101 #endif
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102 pthread_kill(thread->handle, SIGKILL);
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103 #endif
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104 }