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annotate src/thread/riscos/SDL_syscond.c @ 4170:092c0bc69155 SDL-1.2

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Fixed bug #618 Description From Tim Angus 2008-08-30 12:23:56 (-) [reply] As we all know SDL 1.2 doesn't handle dead keys well since one key press potentially equals two (or more) characters. For example, on many layouts, keying <backquote>,<space> results in <no character>,<backquote><space>. Since the unicode member of the SDL_keysym struct only has room for one character, only one can be returned. On Linux, the first character is returned. On Windows however, unless the exact number of characters generated by the keypress is 1, nothing is returned. The following patch addresses this inconsistency. Updated patch which includes a further fix to the handling of the numpad when numlock is on. This further fix is courtesy Amanieu d'Antras.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Apr 2009 08:42:09 +0000
parents a1b03ba2fcd0
children
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
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
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16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
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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 /* RISC OS implementations uses pthreads based on linux code */
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25
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26 #if SDL_THREADS_DISABLED
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27 #include "../generic/SDL_syscond.c"
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28 #else
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29 #include <sys/time.h>
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30 #include <unistd.h>
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31 #include <pthread.h>
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32
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33 #include "SDL_thread.h"
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34 #include "SDL_sysmutex_c.h"
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35
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36 struct SDL_cond
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37 {
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38 pthread_cond_t cond;
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39 };
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40
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41 /* Create a condition variable */
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42 SDL_cond * SDL_CreateCond(void)
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43 {
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44 SDL_cond *cond;
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45
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46 cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond));
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47 if ( cond ) {
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48 if ( pthread_cond_init(&cond->cond, NULL) < 0 ) {
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49 SDL_SetError("pthread_cond_init() failed");
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50 SDL_free(cond);
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51 cond = NULL;
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52 }
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53 }
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54 return(cond);
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55 }
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56
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57 /* Destroy a condition variable */
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58 void SDL_DestroyCond(SDL_cond *cond)
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59 {
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60 if ( cond ) {
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61 pthread_cond_destroy(&cond->cond);
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62 SDL_free(cond);
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63 }
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64 }
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65
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66 /* Restart one of the threads that are waiting on the condition variable */
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67 int SDL_CondSignal(SDL_cond *cond)
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68 {
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69 int retval;
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70
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71 if ( ! cond ) {
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72 SDL_SetError("Passed a NULL condition variable");
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73 return -1;
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74 }
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75
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76 retval = 0;
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77 if ( pthread_cond_signal(&cond->cond) != 0 ) {
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78 SDL_SetError("pthread_cond_signal() failed");
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79 retval = -1;
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80 }
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81 return retval;
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82 }
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83
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84 /* Restart all threads that are waiting on the condition variable */
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85 int SDL_CondBroadcast(SDL_cond *cond)
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86 {
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87 int retval;
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88
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89 if ( ! cond ) {
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90 SDL_SetError("Passed a NULL condition variable");
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91 return -1;
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92 }
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93
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94 retval = 0;
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95 if ( pthread_cond_broadcast(&cond->cond) != 0 ) {
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96 SDL_SetError("pthread_cond_broadcast() failed");
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97 retval = -1;
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98 }
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99 return retval;
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100 }
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101
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102 int SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms)
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103 {
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104 int retval;
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105 struct timeval delta;
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106 struct timespec abstime;
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107
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108 if ( ! cond ) {
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109 SDL_SetError("Passed a NULL condition variable");
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110 return -1;
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111 }
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112
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113 gettimeofday(&delta, NULL);
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114
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115 abstime.tv_sec = delta.tv_sec + (ms/1000);
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116 abstime.tv_nsec = (delta.tv_usec + (ms%1000) * 1000) * 1000;
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117 if ( abstime.tv_nsec > 1000000000 ) {
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118 abstime.tv_sec += 1;
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119 abstime.tv_nsec -= 1000000000;
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120 }
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121
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122 tryagain:
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123 retval = pthread_cond_timedwait(&cond->cond, &mutex->id, &abstime);
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124 switch (retval) {
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125 case EINTR:
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126 goto tryagain;
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127 break;
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128 case ETIMEDOUT:
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129 retval = SDL_MUTEX_TIMEDOUT;
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130 break;
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131 case 0:
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parents:
diff changeset
132 break;
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diff changeset
133 default:
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134 SDL_SetError("pthread_cond_timedwait() failed");
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135 retval = -1;
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parents:
diff changeset
136 break;
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parents:
diff changeset
137 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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138 return retval;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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diff changeset
139 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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parents:
diff changeset
140
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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141 /* Wait on the condition variable, unlocking the provided mutex.
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142 The mutex must be locked before entering this function!
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parents:
diff changeset
143 */
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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diff changeset
144 int SDL_CondWait(SDL_cond *cond, SDL_mutex *mutex)
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diff changeset
145 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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parents:
diff changeset
146 int retval;
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parents:
diff changeset
147
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parents:
diff changeset
148 if ( ! cond ) {
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diff changeset
149 SDL_SetError("Passed a NULL condition variable");
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150 return -1;
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diff changeset
151 }
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parents:
diff changeset
152
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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diff changeset
153 retval = 0;
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diff changeset
154 if ( pthread_cond_wait(&cond->cond, &mutex->id) != 0 ) {
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parents:
diff changeset
155 SDL_SetError("pthread_cond_wait() failed");
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parents:
diff changeset
156 retval = -1;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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parents:
diff changeset
158 return retval;
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parents:
diff changeset
159 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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160 #endif