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comparison src/thread/os2/SDL_sysmutex.c @ 1668:4da1ee79c9af SDL-1.3

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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 HMTX hmtxID; 35 HMTX hmtxID;
36 }; 36 };
37 37
38 /* Create a mutex */ 38 /* Create a mutex */
39 DECLSPEC SDL_mutex *SDLCALL 39 DECLSPEC SDL_mutex *SDLCALL
40 SDL_CreateMutex (void) 40 SDL_CreateMutex(void)
41 { 41 {
42 SDL_mutex *mutex; 42 SDL_mutex *mutex;
43 APIRET ulrc; 43 APIRET ulrc;
44 44
45 /* Allocate mutex memory */ 45 /* Allocate mutex memory */
46 mutex = (SDL_mutex *) SDL_malloc (sizeof (*mutex)); 46 mutex = (SDL_mutex *) SDL_malloc(sizeof(*mutex));
47 if (mutex) { 47 if (mutex) {
48 /* Create the mutex, with initial value signaled */ 48 /* Create the mutex, with initial value signaled */
49 ulrc = DosCreateMutexSem (NULL, // Create unnamed semaphore 49 ulrc = DosCreateMutexSem(NULL, // Create unnamed semaphore
50 &(mutex->hmtxID), // Pointer to handle 50 &(mutex->hmtxID), // Pointer to handle
51 0L, // Flags: create it private (not shared) 51 0L, // Flags: create it private (not shared)
52 FALSE); // Initial value: unowned 52 FALSE); // Initial value: unowned
53 if (ulrc != NO_ERROR) { 53 if (ulrc != NO_ERROR) {
54 SDL_SetError ("Couldn't create mutex"); 54 SDL_SetError("Couldn't create mutex");
55 SDL_free (mutex); 55 SDL_free(mutex);
56 mutex = NULL; 56 mutex = NULL;
57 } 57 }
58 } else { 58 } else {
59 SDL_OutOfMemory (); 59 SDL_OutOfMemory();
60 } 60 }
61 return (mutex); 61 return (mutex);
62 } 62 }
63 63
64 /* Free the mutex */ 64 /* Free the mutex */
65 DECLSPEC void SDLCALL 65 DECLSPEC void SDLCALL
66 SDL_DestroyMutex (SDL_mutex * mutex) 66 SDL_DestroyMutex(SDL_mutex * mutex)
67 { 67 {
68 if (mutex) { 68 if (mutex) {
69 if (mutex->hmtxID) { 69 if (mutex->hmtxID) {
70 DosCloseMutexSem (mutex->hmtxID); 70 DosCloseMutexSem(mutex->hmtxID);
71 mutex->hmtxID = 0; 71 mutex->hmtxID = 0;
72 } 72 }
73 SDL_free (mutex); 73 SDL_free(mutex);
74 } 74 }
75 } 75 }
76 76
77 /* Lock the mutex */ 77 /* Lock the mutex */
78 DECLSPEC int SDLCALL 78 DECLSPEC int SDLCALL
79 SDL_mutexP (SDL_mutex * mutex) 79 SDL_mutexP(SDL_mutex * mutex)
80 { 80 {
81 if (mutex == NULL) { 81 if (mutex == NULL) {
82 SDL_SetError ("Passed a NULL mutex"); 82 SDL_SetError("Passed a NULL mutex");
83 return -1; 83 return -1;
84 } 84 }
85 if (DosRequestMutexSem (mutex->hmtxID, SEM_INDEFINITE_WAIT) != NO_ERROR) { 85 if (DosRequestMutexSem(mutex->hmtxID, SEM_INDEFINITE_WAIT) != NO_ERROR) {
86 SDL_SetError ("Couldn't wait on mutex"); 86 SDL_SetError("Couldn't wait on mutex");
87 return -1; 87 return -1;
88 } 88 }
89 return (0); 89 return (0);
90 } 90 }
91 91
92 /* Unlock the mutex */ 92 /* Unlock the mutex */
93 DECLSPEC int SDLCALL 93 DECLSPEC int SDLCALL
94 SDL_mutexV (SDL_mutex * mutex) 94 SDL_mutexV(SDL_mutex * mutex)
95 { 95 {
96 if (mutex == NULL) { 96 if (mutex == NULL) {
97 SDL_SetError ("Passed a NULL mutex"); 97 SDL_SetError("Passed a NULL mutex");
98 return -1; 98 return -1;
99 } 99 }
100 if (DosReleaseMutexSem (mutex->hmtxID) != NO_ERROR) { 100 if (DosReleaseMutexSem(mutex->hmtxID) != NO_ERROR) {
101 SDL_SetError ("Couldn't release mutex"); 101 SDL_SetError("Couldn't release mutex");
102 return -1; 102 return -1;
103 } 103 }
104 return (0); 104 return (0);
105 } 105 }
106 106