Mercurial > sdl-ios-xcode

annotate src/thread/riscos/SDL_syssem.c @ 1364:4214be2b8d77

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix typo
author Patrice Mandin <patmandin@gmail.com>
date Thu, 16 Feb 2006 22:00:06 +0000
parents 19418e4422cb
children d910939febfa
rev   line source
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /*
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
3 Copyright (C) 1997-2006 Sam Lantinga
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
4
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
6 modify it under the terms of the GNU Lesser General Public
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
13 Lesser General Public License for more details.
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
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)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
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)
Sam Lantinga <slouken@libsdl.org>
parents: 1099
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19 Sam Lantinga
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 slouken@libsdl.org
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21 */
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
22
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
23 /* RISC OS semiphores based on linux code */
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
24
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 #include "SDL_timer.h"
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27 #include "SDL_thread.h"
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28 #include "SDL_systhread_c.h"
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
30 #if !SDL_THREADS_DISABLED
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32 SDL_sem *SDL_CreateSemaphore(Uint32 initial_value)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 SDL_SetError("SDL not configured with thread support");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 return (SDL_sem *)0;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
38 void SDL_DestroySemaphore(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40 return;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43 int SDL_SemTryWait(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45 SDL_SetError("SDL not configured with thread support");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
46 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49 int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51 SDL_SetError("SDL not configured with thread support");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55 int SDL_SemWait(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57 SDL_SetError("SDL not configured with thread support");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
61 Uint32 SDL_SemValue(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63 return 0;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66 int SDL_SemPost(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68 SDL_SetError("SDL not configured with thread support");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
70 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
72 #else
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
74
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
75 #include <unistd.h> /* For getpid() */
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
76 #include <pthread.h>
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
77 #include <semaphore.h>
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
78
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
79 struct SDL_semaphore {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
80 sem_t *sem;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
81 sem_t sem_data;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
82 };
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
83
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
84 /* Create a semaphore, initialized with value */
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
85 SDL_sem *SDL_CreateSemaphore(Uint32 initial_value)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86 {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
87 SDL_sem *sem = (SDL_sem *) SDL_malloc(sizeof(SDL_sem));
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
88 if ( sem ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
89 if ( sem_init(&sem->sem_data, 0, initial_value) < 0 ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
90 SDL_SetError("sem_init() failed");
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
91 SDL_free(sem);
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
92 sem = NULL;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
93 } else {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
94 sem->sem = &sem->sem_data;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
95 }
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
96 } else {
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
97 SDL_OutOfMemory();
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
98 }
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
99 return sem;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 void SDL_DestroySemaphore(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
103 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104 if ( sem ) {
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
105 sem_destroy(sem->sem);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
106 SDL_free(sem);
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
107 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
108 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
109
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
110 int SDL_SemTryWait(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
112 int retval;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
113
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
114 if ( ! sem ) {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
115 SDL_SetError("Passed a NULL semaphore");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 retval = SDL_MUTEX_TIMEDOUT;
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
119 if ( sem_trywait(sem->sem) == 0 ) {
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
120 retval = 0;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121 }
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
122 return retval;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
123 }
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
124
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
125 int SDL_SemWait(SDL_sem *sem)
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
126 {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
127 int retval;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
128
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
129 if ( ! sem ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
130 SDL_SetError("Passed a NULL semaphore");
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
131 return -1;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
132 }
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
133
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
134 retval = sem_wait(sem->sem);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
135 if ( retval < 0 ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
136 SDL_SetError("sem_wait() failed");
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
137 }
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 return retval;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 int retval;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 if ( ! sem ) {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 SDL_SetError("Passed a NULL semaphore");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
150 /* Try the easy cases first */
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 if ( timeout == 0 ) {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 return SDL_SemTryWait(sem);
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 }
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
154 if ( timeout == SDL_MUTEX_MAXWAIT ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
155 return SDL_SemWait(sem);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
156 }
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
158 /* Ack! We have to busy wait... */
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
159 timeout += SDL_GetTicks();
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
160 do {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
161 retval = SDL_SemTryWait(sem);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
162 if ( retval == 0 ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
163 break;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
164 }
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
165 SDL_Delay(1);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
166 } while ( SDL_GetTicks() < timeout );
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 return retval;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 Uint32 SDL_SemValue(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 {
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
173 int ret = 0;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 if ( sem ) {
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
175 sem_getvalue(sem->sem, &ret);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
176 if ( ret < 0 ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
177 ret = 0;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
178 }
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 }
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
180 return (Uint32)ret;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 int SDL_SemPost(SDL_sem *sem)
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 {
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
185 int retval;
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
186
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 if ( ! sem ) {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 SDL_SetError("Passed a NULL semaphore");
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 return -1;
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
192 retval = sem_post(sem->sem);
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
193 if ( retval < 0 ) {
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
194 SDL_SetError("sem_post() failed");
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 }
1099
1ccbb2b7d905 Date: Fri, 15 Jul 2005 08:29:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 955
diff changeset
196 return retval;
955
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 }
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
199 #endif /* !SDL_THREADS_DISABLED */