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annotate src/thread/pth/SDL_systhread.c @ 1525:23a347cfbed8

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Fixed bug #38 I'm using SDL 1.2.9 with Visual C++ 7.0 on Windows 2000. Here's the setup: my game starts in a window, with SDL_WM_GrabInput(SDL_GRAB_ON) to constrain the cursor to the game window. The mouse cursor is outside of the window when the game launches, and when the window appears the cursor is grabbed and placed at the top left corner of the inside of the game window. At this point, if I click the mouse without moving it, the SDL_MOUSEBUTTONDOWN event's mouse coordinates are (65535,65535).
author Sam Lantinga <slouken@libsdl.org>
date Tue, 14 Mar 2006 06:00:30 +0000
parents d910939febfa
children 14717b52abc0
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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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 /*
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25 * GNU pth threads
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26 *
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27 * Patrice Mandin
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28 */
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29
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30 #include "SDL_thread.h"
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31 #include "../SDL_systhread.h"
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32
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33 #include <pth.h>
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34 #include <signal.h>
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35
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36 /* List of signals to mask in the subthreads */
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37 static int sig_list[] = {
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38 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
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39 SIGVTALRM, SIGPROF, 0
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40 };
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41
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42 static void *RunThread(void *data)
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43 {
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44 SDL_RunThread(data);
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45 pth_exit((void*)0);
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46 return((void *)0); /* Prevent compiler warning */
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47 }
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48
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49 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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50 {
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51 pth_attr_t type;
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52
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53 /* Create a new attribute */
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54 type = pth_attr_new();
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55 if ( type == NULL ) {
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56 SDL_SetError("Couldn't initialize pth attributes");
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57 return(-1);
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58 }
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59 pth_attr_set(type, PTH_ATTR_JOINABLE, TRUE);
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61 /* Create the thread and go! */
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62 thread->handle = pth_spawn(type, RunThread, args);
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63 if ( thread->handle == NULL ) {
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64 SDL_SetError("Not enough resources to create thread");
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65 return(-1);
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66 }
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67 return(0);
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68 }
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69
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70 void SDL_SYS_SetupThread(void)
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71 {
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72 int i;
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73 sigset_t mask;
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74 int oldstate;
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75
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76 /* Mask asynchronous signals for this thread */
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77 sigemptyset(&mask);
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78 for ( i=0; sig_list[i]; ++i ) {
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79 sigaddset(&mask, sig_list[i]);
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80 }
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81 pth_sigmask(SIG_BLOCK, &mask, 0);
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82
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83 /* Allow ourselves to be asynchronously cancelled */
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84 pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate);
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85 }
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86
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87 /* WARNING: This may not work for systems with 64-bit pid_t */
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88 Uint32 SDL_ThreadID(void)
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89 {
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90 return((Uint32)pth_self());
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91 }
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92
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93 void SDL_SYS_WaitThread(SDL_Thread *thread)
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94 {
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95 pth_join(thread->handle, NULL);
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96 }
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97
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98 void SDL_SYS_KillThread(SDL_Thread *thread)
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99 {
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100 pth_cancel(thread->handle);
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101 pth_join(thread->handle, NULL);
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102 }