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annotate src/thread/pthread/SDL_systhread.c @ 3070:3e3724fb829e

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Fixed bug #681 Description From Philipp 2009-01-16 20:50:01 (-) [reply] The File test/README from the svn says this: testgl A very simple example of using OpenGL with SDL testgl2 Improved version of testgl It is actually exchanged. testgl.c is the improved version right now and testgl2.c the simple one.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Feb 2009 05:44:49 +0000
parents 99210400e8b9
children dc1eb82ffdaa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 #ifdef __RISCOS__
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38 /* RISC OS needs to know the main thread for
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39 * it's timer and event processing. */
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40 int riscos_using_threads = 0;
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41 Uint32 riscos_main_thread = 0; /* Thread running events */
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42 #endif
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43
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44
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45 static void *
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46 RunThread(void *data)
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47 {
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48 SDL_RunThread(data);
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49 pthread_exit((void *) 0);
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50 return ((void *) 0); /* Prevent compiler warning */
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51 }
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52
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53 int
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54 SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
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55 {
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56 pthread_attr_t type;
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57
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58 /* Set the thread attributes */
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59 if (pthread_attr_init(&type) != 0) {
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60 SDL_SetError("Couldn't initialize pthread attributes");
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61 return (-1);
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62 }
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63 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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64
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65 /* Create the thread and go! */
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66 if (pthread_create(&thread->handle, &type, RunThread, args) != 0) {
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67 SDL_SetError("Not enough resources to create thread");
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68 return (-1);
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69 }
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70 #ifdef __RISCOS__
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71 if (riscos_using_threads == 0) {
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72 riscos_using_threads = 1;
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73 riscos_main_thread = SDL_ThreadID();
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74 }
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75 #endif
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76
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77 return (0);
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78 }
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79
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80 void
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81 SDL_SYS_SetupThread(void)
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82 {
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83 int i;
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84 sigset_t mask;
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85
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86 /* Mask asynchronous signals for this thread */
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87 sigemptyset(&mask);
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88 for (i = 0; sig_list[i]; ++i) {
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89 sigaddset(&mask, sig_list[i]);
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90 }
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91 pthread_sigmask(SIG_BLOCK, &mask, 0);
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92
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93 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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94 /* Allow ourselves to be asynchronously cancelled */
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95 {
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96 int oldstate;
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97 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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98 }
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99 #endif
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100 }
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101
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102 /* WARNING: This may not work for systems with 64-bit pid_t */
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103 Uint32
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104 SDL_ThreadID(void)
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105 {
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106 return ((Uint32) pthread_self());
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107 }
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108
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109 void
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110 SDL_SYS_WaitThread(SDL_Thread * thread)
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111 {
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112 pthread_join(thread->handle, 0);
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113 }
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114
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115 /* vi: set ts=4 sw=4 expandtab: */