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annotate src/thread/pthread/SDL_systhread.c @ 4085:51486c979189 SDL-1.2

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> Hi Ryan, > I checked the list you linked to, but did not see any reference to whether > the Win32 window centering bug was fixed... Has that been addressed at all? > I refer to the bug where, unless one has globally set the > SDL_WINDOW_CENTERED variable in the OS, only the 1st window that is created > will be centered. Subsequent calls to SetVideoMode will create a window tha t > shares the same upper-left corner location. I'm working on that now, thanks for reporting it. What I'm doing is if the width and height are the same, I'm leaving the window position alone, but if they're different they will respect the positioning environment variables.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 20 Jul 2007 03:25:40 +0000
parents 1e8582152d44
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 #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 *RunThread(void *data)
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46 {
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47 SDL_RunThread(data);
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48 pthread_exit((void*)0);
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49 return((void *)0); /* Prevent compiler warning */
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50 }
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51
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52 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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53 {
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54 pthread_attr_t type;
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55
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56 /* Set the thread attributes */
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57 if ( pthread_attr_init(&type) != 0 ) {
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58 SDL_SetError("Couldn't initialize pthread attributes");
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59 return(-1);
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60 }
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61 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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62
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63 /* Create the thread and go! */
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64 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
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65 SDL_SetError("Not enough resources to create thread");
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66 return(-1);
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67 }
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68
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69 #ifdef __RISCOS__
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70 if (riscos_using_threads == 0) {
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71 riscos_using_threads = 1;
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72 riscos_main_thread = SDL_ThreadID();
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73 }
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74 #endif
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75
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76 return(0);
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77 }
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78
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79 void SDL_SYS_SetupThread(void)
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80 {
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81 int i;
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82 sigset_t mask;
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83
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84 /* Mask asynchronous signals for this thread */
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85 sigemptyset(&mask);
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86 for ( i=0; sig_list[i]; ++i ) {
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87 sigaddset(&mask, sig_list[i]);
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88 }
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89 pthread_sigmask(SIG_BLOCK, &mask, 0);
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90
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91 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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92 /* Allow ourselves to be asynchronously cancelled */
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93 { int oldstate;
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94 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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95 }
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96 #endif
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97 }
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98
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99 /* WARNING: This may not work for systems with 64-bit pid_t */
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100 Uint32 SDL_ThreadID(void)
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101 {
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102 return((Uint32)pthread_self());
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103 }
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104
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105 void SDL_SYS_WaitThread(SDL_Thread *thread)
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106 {
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107 pthread_join(thread->handle, 0);
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108 }
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109
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110 void SDL_SYS_KillThread(SDL_Thread *thread)
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111 {
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112 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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113 pthread_cancel(thread->handle);
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114 #else
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115 #ifdef __FREEBSD__
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116 #warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
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117 #endif
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118 pthread_kill(thread->handle, SIGKILL);
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119 #endif
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120 }