Mercurial > sdl-ios-xcode

comparison src/thread/amigaos/SDL_syssem.c @ 1668:4da1ee79c9af SDL-1.3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
more tweaking indent options
author Sam Lantinga <slouken@libsdl.org>
date Mon, 29 May 2006 04:04:35 +0000
parents 782fd950bd46
children
comparison
equal deleted inserted replaced
1667:1fddae038bc8 1668:4da1ee79c9af
35 #undef D 35 #undef D
36 36
37 #define D(x) 37 #define D(x)
38 38
39 SDL_sem * 39 SDL_sem *
40 SDL_CreateSemaphore (Uint32 initial_value) 40 SDL_CreateSemaphore(Uint32 initial_value)
41 { 41 {
42 SDL_sem *sem; 42 SDL_sem *sem;
43 43
44 sem = (SDL_sem *) SDL_malloc (sizeof (*sem)); 44 sem = (SDL_sem *) SDL_malloc(sizeof(*sem));
45 45
46 if (!sem) { 46 if (!sem) {
47 SDL_OutOfMemory (); 47 SDL_OutOfMemory();
48 return (0); 48 return (0);
49 } 49 }
50 50
51 D (bug ("Creating semaphore %lx...\n", sem)); 51 D(bug("Creating semaphore %lx...\n", sem));
52 52
53 SDL_memset (sem, 0, sizeof (*sem)); 53 SDL_memset(sem, 0, sizeof(*sem));
54 54
55 InitSemaphore (&sem->Sem); 55 InitSemaphore(&sem->Sem);
56 56
57 return (sem); 57 return (sem);
58 } 58 }
59 59
60 void 60 void
61 SDL_DestroySemaphore (SDL_sem * sem) 61 SDL_DestroySemaphore(SDL_sem * sem)
62 { 62 {
63 D (bug ("Destroying semaphore %lx...\n", sem)); 63 D(bug("Destroying semaphore %lx...\n", sem));
64 64
65 if (sem) { 65 if (sem) {
66 // Condizioni per liberare i task in attesa? 66 // Condizioni per liberare i task in attesa?
67 SDL_free (sem); 67 SDL_free(sem);
68 } 68 }
69 } 69 }
70 70
71 int 71 int
72 SDL_SemTryWait (SDL_sem * sem) 72 SDL_SemTryWait(SDL_sem * sem)
73 { 73 {
74 if (!sem) { 74 if (!sem) {
75 SDL_SetError ("Passed a NULL semaphore"); 75 SDL_SetError("Passed a NULL semaphore");
76 return -1; 76 return -1;
77 } 77 }
78 78
79 D (bug ("TryWait semaphore...%lx\n", sem)); 79 D(bug("TryWait semaphore...%lx\n", sem));
80 80
81 ObtainSemaphore (&sem->Sem); 81 ObtainSemaphore(&sem->Sem);
82 // ReleaseSemaphore(&sem->Sem); 82 // ReleaseSemaphore(&sem->Sem);
83 83
84 return 1; 84 return 1;
85 } 85 }
86 86
87 int 87 int
88 SDL_SemWaitTimeout (SDL_sem * sem, Uint32 timeout) 88 SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout)
89 { 89 {
90 int retval; 90 int retval;
91 91
92 92
93 if (!sem) { 93 if (!sem) {
94 SDL_SetError ("Passed a NULL semaphore"); 94 SDL_SetError("Passed a NULL semaphore");
95 return -1; 95 return -1;
96 } 96 }
97 97
98 D (bug ("WaitTimeout (%ld) semaphore...%lx\n", timeout, sem)); 98 D(bug("WaitTimeout (%ld) semaphore...%lx\n", timeout, sem));
99 99
100 /* A timeout of 0 is an easy case */ 100 /* A timeout of 0 is an easy case */
101 if (timeout == 0) { 101 if (timeout == 0) {
102 ObtainSemaphore (&sem->Sem); 102 ObtainSemaphore(&sem->Sem);
103 return 1; 103 return 1;
104 } 104 }
105 if (!(retval = AttemptSemaphore (&sem->Sem))) { 105 if (!(retval = AttemptSemaphore(&sem->Sem))) {
106 SDL_Delay (timeout); 106 SDL_Delay(timeout);
107 retval = AttemptSemaphore (&sem->Sem); 107 retval = AttemptSemaphore(&sem->Sem);
108 } 108 }
109 109
110 if (retval == TRUE) { 110 if (retval == TRUE) {
111 // ReleaseSemaphore(&sem->Sem); 111 // ReleaseSemaphore(&sem->Sem);
112 retval = 1; 112 retval = 1;
114 114
115 return retval; 115 return retval;
116 } 116 }
117 117
118 int 118 int
119 SDL_SemWait (SDL_sem * sem) 119 SDL_SemWait(SDL_sem * sem)
120 { 120 {
121 ObtainSemaphore (&sem->Sem); 121 ObtainSemaphore(&sem->Sem);
122 return 0; 122 return 0;
123 } 123 }
124 124
125 Uint32 125 Uint32
126 SDL_SemValue (SDL_sem * sem) 126 SDL_SemValue(SDL_sem * sem)
127 { 127 {
128 Uint32 value; 128 Uint32 value;
129 129
130 value = 0; 130 value = 0;
131 if (sem) { 131 if (sem) {
137 } 137 }
138 return value; 138 return value;
139 } 139 }
140 140
141 int 141 int
142 SDL_SemPost (SDL_sem * sem) 142 SDL_SemPost(SDL_sem * sem)
143 { 143 {
144 if (!sem) { 144 if (!sem) {
145 SDL_SetError ("Passed a NULL semaphore"); 145 SDL_SetError("Passed a NULL semaphore");
146 return -1; 146 return -1;
147 } 147 }
148 D (bug ("SemPost semaphore...%lx\n", sem)); 148 D(bug("SemPost semaphore...%lx\n", sem));
149 149
150 ReleaseSemaphore (&sem->Sem); 150 ReleaseSemaphore(&sem->Sem);
151 return 0; 151 return 0;
152 } 152 }
153 153
154 /* vi: set ts=4 sw=4 expandtab: */ 154 /* vi: set ts=4 sw=4 expandtab: */