Mercurial > sdl-ios-xcode
annotate src/thread/pthread/SDL_systhread.c @ 1551:02e19471a694
Fixed bug #4
[Note: I'm applying this patch since it's a cleaner version of what's already implemented, and supports this controller on older kernels. I'll ask to make sure this doesn't break on the new kernels where it's no longer necessary]
Date: Mon, 21 Mar 2005 09:41:11 -0500
From: Chris Nelson
Subject: SDL Patch
Hey, Ryan.
I submitted the following patch about a year ago. It's just a simple
patch for the linux port, to make multiple joysticks each appear to SDL
as their own device, if they are on the same USB port (specifically,
these guys
<http://www.consoleplus.co.uk/product_info.php?pName=super-joybox-5-quad-joypad-converter>,
which allow 4 Playstation2 controllers to be accessed via a single USB
port). Without this patch, SDL pretty much drops the ball, and reports
that there are 4 joysticks available when less than that number are
plugged in.
My work built upon the work of another person with the same device. When
I submitted the patch to the list, he tested it, but it didn't work for
him, so the patch was never accepted. Maybe about 3 times in the past
year, I've tried to email the guy, to see if he couldn't run my new
version, complete with debug code to diagnose the problem he was having.
He never got back to me.
So, I'm attaching the patch. I wish I knew why it didn't work for him,
but I've been using it for the last year with no problems. Let me know
if you need any more information, or have any ideas as to how I could
test it. I'd like to see it in the tree, but I want to make sure it works.
-Chris
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 19 Mar 2006 06:31:34 +0000 (2006-03-19) |
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 } |