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author | Franklin Wei <git@fwei.tk> | 2018-02-07 20:04:46 -0500 |
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committer | Franklin Wei <git@fwei.tk> | 2018-03-12 20:52:01 -0400 |
commit | 6039eb05ba6d82ef56f2868c96654c552d117bf9 (patch) | |
tree | 9db7016bcbf66cfdf7b9bc998d84c6eaff9c8378 /apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c | |
parent | ef373c03b96b0be08babca581d9f10bccfd4931f (diff) | |
download | rockbox-6039eb05ba6d82ef56f2868c96654c552d117bf9.tar.gz rockbox-6039eb05ba6d82ef56f2868c96654c552d117bf9.zip |
sdl: remove non-rockbox drivers
We never use any of these other drivers, so having them around just takes
up space.
Change-Id: Iced812162df1fef3fd55522b7e700acb6c3bcd41
Diffstat (limited to 'apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c')
-rw-r--r-- | apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c b/apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c deleted file mode 100644 index c3b8ce2c37..0000000000 --- a/apps/plugins/sdl/src/thread/pthread/SDL_sysmutex.c +++ /dev/null | |||
@@ -1,153 +0,0 @@ | |||
1 | /* | ||
2 | SDL - Simple DirectMedia Layer | ||
3 | Copyright (C) 1997-2012 Sam Lantinga | ||
4 | |||
5 | This library is free software; you can redistribute it and/or | ||
6 | modify it under the terms of the GNU Lesser General Public | ||
7 | License as published by the Free Software Foundation; either | ||
8 | version 2.1 of the License, or (at your option) any later version. | ||
9 | |||
10 | This library is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Lesser General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Lesser General Public | ||
16 | License along with this library; if not, write to the Free Software | ||
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
18 | |||
19 | Sam Lantinga | ||
20 | slouken@libsdl.org | ||
21 | */ | ||
22 | #include "SDL_config.h" | ||
23 | |||
24 | #include <pthread.h> | ||
25 | |||
26 | #include "SDL_thread.h" | ||
27 | |||
28 | #if !SDL_THREAD_PTHREAD_RECURSIVE_MUTEX && \ | ||
29 | !SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP | ||
30 | #define FAKE_RECURSIVE_MUTEX | ||
31 | #endif | ||
32 | |||
33 | struct SDL_mutex { | ||
34 | pthread_mutex_t id; | ||
35 | #if FAKE_RECURSIVE_MUTEX | ||
36 | int recursive; | ||
37 | pthread_t owner; | ||
38 | #endif | ||
39 | }; | ||
40 | |||
41 | SDL_mutex *SDL_CreateMutex (void) | ||
42 | { | ||
43 | SDL_mutex *mutex; | ||
44 | pthread_mutexattr_t attr; | ||
45 | |||
46 | /* Allocate the structure */ | ||
47 | mutex = (SDL_mutex *)SDL_calloc(1, sizeof(*mutex)); | ||
48 | if ( mutex ) { | ||
49 | pthread_mutexattr_init(&attr); | ||
50 | #if SDL_THREAD_PTHREAD_RECURSIVE_MUTEX | ||
51 | pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); | ||
52 | #elif SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP | ||
53 | pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP); | ||
54 | #else | ||
55 | /* No extra attributes necessary */ | ||
56 | #endif | ||
57 | if ( pthread_mutex_init(&mutex->id, &attr) != 0 ) { | ||
58 | SDL_SetError("pthread_mutex_init() failed"); | ||
59 | SDL_free(mutex); | ||
60 | mutex = NULL; | ||
61 | } | ||
62 | } else { | ||
63 | SDL_OutOfMemory(); | ||
64 | } | ||
65 | return(mutex); | ||
66 | } | ||
67 | |||
68 | void SDL_DestroyMutex(SDL_mutex *mutex) | ||
69 | { | ||
70 | if ( mutex ) { | ||
71 | pthread_mutex_destroy(&mutex->id); | ||
72 | SDL_free(mutex); | ||
73 | } | ||
74 | } | ||
75 | |||
76 | /* Lock the mutex */ | ||
77 | int SDL_mutexP(SDL_mutex *mutex) | ||
78 | { | ||
79 | int retval; | ||
80 | #if FAKE_RECURSIVE_MUTEX | ||
81 | pthread_t this_thread; | ||
82 | #endif | ||
83 | |||
84 | if ( mutex == NULL ) { | ||
85 | SDL_SetError("Passed a NULL mutex"); | ||
86 | return -1; | ||
87 | } | ||
88 | |||
89 | retval = 0; | ||
90 | #if FAKE_RECURSIVE_MUTEX | ||
91 | this_thread = pthread_self(); | ||
92 | if ( mutex->owner == this_thread ) { | ||
93 | ++mutex->recursive; | ||
94 | } else { | ||
95 | /* The order of operations is important. | ||
96 | We set the locking thread id after we obtain the lock | ||
97 | so unlocks from other threads will fail. | ||
98 | */ | ||
99 | if ( pthread_mutex_lock(&mutex->id) == 0 ) { | ||
100 | mutex->owner = this_thread; | ||
101 | mutex->recursive = 0; | ||
102 | } else { | ||
103 | SDL_SetError("pthread_mutex_lock() failed"); | ||
104 | retval = -1; | ||
105 | } | ||
106 | } | ||
107 | #else | ||
108 | if ( pthread_mutex_lock(&mutex->id) < 0 ) { | ||
109 | SDL_SetError("pthread_mutex_lock() failed"); | ||
110 | retval = -1; | ||
111 | } | ||
112 | #endif | ||
113 | return retval; | ||
114 | } | ||
115 | |||
116 | int SDL_mutexV(SDL_mutex *mutex) | ||
117 | { | ||
118 | int retval; | ||
119 | |||
120 | if ( mutex == NULL ) { | ||
121 | SDL_SetError("Passed a NULL mutex"); | ||
122 | return -1; | ||
123 | } | ||
124 | |||
125 | retval = 0; | ||
126 | #if FAKE_RECURSIVE_MUTEX | ||
127 | /* We can only unlock the mutex if we own it */ | ||
128 | if ( pthread_self() == mutex->owner ) { | ||
129 | if ( mutex->recursive ) { | ||
130 | --mutex->recursive; | ||
131 | } else { | ||
132 | /* The order of operations is important. | ||
133 | First reset the owner so another thread doesn't lock | ||
134 | the mutex and set the ownership before we reset it, | ||
135 | then release the lock semaphore. | ||
136 | */ | ||
137 | mutex->owner = 0; | ||
138 | pthread_mutex_unlock(&mutex->id); | ||
139 | } | ||
140 | } else { | ||
141 | SDL_SetError("mutex not owned by this thread"); | ||
142 | retval = -1; | ||
143 | } | ||
144 | |||
145 | #else | ||
146 | if ( pthread_mutex_unlock(&mutex->id) < 0 ) { | ||
147 | SDL_SetError("pthread_mutex_unlock() failed"); | ||
148 | retval = -1; | ||
149 | } | ||
150 | #endif /* FAKE_RECURSIVE_MUTEX */ | ||
151 | |||
152 | return retval; | ||
153 | } | ||