FreeCalypso > hg > fc-tourmaline
annotate src/g23m-aci/gdd_dio/gdd_sys.h @ 241:28071f072194
FCBM bug: erroneously used FCHG_USE_ID in a trace
| author | Mychaela Falconia <falcon@freecalypso.org> | 
|---|---|
| date | Sun, 02 May 2021 06:16:30 +0000 | 
| parents | fa8dc04885d8 | 
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| rev | line source | 
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changeset | 1 /* | 
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changeset | 2 +----------------------------------------------------------------------------- | 
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changeset | 3 | Project : GSM-F&D (8411) | 
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changeset | 4 | Modul : gdd_sys.h | 
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changeset | 5 +----------------------------------------------------------------------------- | 
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changeset | 6 | Copyright 2005 Texas Instruments Berlin, AG | 
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changeset | 7 | All rights reserved. | 
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changeset | 8 | | 
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changeset | 9 | This file is confidential and a trade secret of Texas | 
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changeset | 10 | Instruments Berlin, AG | 
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changeset | 11 | The receipt of or possession of this file does not convey | 
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changeset | 12 | any rights to reproduce or disclose its contents or to | 
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changeset | 13 | manufacture, use, or sell anything it may describe, in | 
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changeset | 14 | whole, or in part, without the specific written consent of | 
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changeset | 15 | Texas Instruments Berlin, AG. | 
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changeset | 16 +----------------------------------------------------------------------------- | 
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changeset | 17 | Purpose : API for limited system functionality offered to application | 
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changeset | 18 | domain libraries. | 
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changeset | 19 +----------------------------------------------------------------------------- | 
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changeset | 20 */ | 
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changeset | 21 | 
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changeset | 22 #ifndef GDD_SYS_H | 
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changeset | 23 #define GDD_SYS_H | 
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changeset | 24 | 
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changeset | 25 /*==== DEFINITIONS ==========================================================*/ | 
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changeset | 26 | 
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changeset | 27 typedef int T_GDD_SEM; | 
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changeset | 28 | 
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changeset | 29 | 
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changeset | 30 /*==== DYNAMIC MEMORY FUNCTIONS =============================================*/ | 
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changeset | 31 | 
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changeset | 32 | 
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changeset | 33 /* | 
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changeset | 34 +------------------------------------------------------------------------------ | 
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changeset | 35 | Function : gdd_sys_mem_malloc | 
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changeset | 36 +------------------------------------------------------------------------------ | 
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changeset | 37 | Description : Allocate memory. | 
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changeset | 38 | | 
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changeset | 39 | Parameters : size - Size of memory required. | 
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changeset | 40 | | 
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changeset | 41 | Return : Pointer to first byte of allocated memory. | 
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changeset | 42 | 0 if allocation failed. | 
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changeset | 43 +------------------------------------------------------------------------------ | 
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changeset | 44 */ | 
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changeset | 45 void * gdd_sys_mem_malloc(int size); | 
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changeset | 46 | 
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changeset | 47 | 
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changeset | 48 /* | 
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changeset | 49 +------------------------------------------------------------------------------ | 
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changeset | 50 | Function : gdd_sys_mem_free | 
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changeset | 51 +------------------------------------------------------------------------------ | 
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changeset | 52 | Description : Release memory which was previously allocated. | 
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changeset | 53 | | 
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changeset | 54 | Parameters : p - Pointer to memory to be deallocated | 
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changeset | 55 +------------------------------------------------------------------------------ | 
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changeset | 56 */ | 
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changeset | 57 void gdd_sys_mem_free(void * p); | 
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changeset | 58 | 
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changeset | 59 | 
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changeset | 60 /*==== SEMAPHORE FUNCTIONS ==================================================*/ | 
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changeset | 61 | 
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changeset | 62 | 
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changeset | 63 /* | 
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changeset | 64 +------------------------------------------------------------------------------ | 
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changeset | 65 | Function : gdd_sys_sem_open | 
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changeset | 66 +------------------------------------------------------------------------------ | 
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changeset | 67 | Description : Opens a (counting) semaphore specified by its name. If the | 
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changeset | 68 | semaphore does not exist, it will be created with the initial | 
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changeset | 69 | count given. If the semaphore already exists the parameter count | 
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changeset | 70 | will be ignored. | 
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changeset | 71 | | 
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changeset | 72 | Parameters : name - Some name to identify the semaphore | 
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changeset | 73 | count - initial count (e.g. 1 for a binary sem.) | 
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changeset | 74 | | 
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changeset | 75 | Return : Returns handle to created semaphore, or -1 if an error occured. | 
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changeset | 76 +------------------------------------------------------------------------------ | 
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changeset | 77 */ | 
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changeset | 78 T_GDD_SEM gdd_sys_sem_open(char * name, unsigned short count); | 
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changeset | 79 | 
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changeset | 80 | 
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changeset | 81 /* | 
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changeset | 82 +------------------------------------------------------------------------------ | 
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changeset | 83 | Function : gdd_sys_sem_close | 
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changeset | 84 +------------------------------------------------------------------------------ | 
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changeset | 85 | Description : Closes a semaphore | 
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changeset | 86 | | 
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changeset | 87 | Parameters : sem - handle of semaphore | 
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changeset | 88 | | 
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changeset | 89 | Return : 0 = succees | 
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changeset | 90 | 1 = error | 
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changeset | 91 +------------------------------------------------------------------------------ | 
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changeset | 92 */ | 
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changeset | 93 int gdd_sys_sem_close(T_GDD_SEM sem); | 
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changeset | 94 | 
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changeset | 95 | 
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changeset | 96 /* | 
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changeset | 97 +------------------------------------------------------------------------------ | 
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changeset | 98 | Function : gdd_sys_sem_down | 
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changeset | 99 +------------------------------------------------------------------------------ | 
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changeset | 100 | Description : This functions obtains the specified semaphore, i.e. | 
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changeset | 101 | the counter is decremented, if it is greater than zero. | 
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changeset | 102 | If the counter is equal to zero, than the calling task is | 
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changeset | 103 | suspended until the counter is incremented by another task. | 
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changeset | 104 | If the caller is a non-task thread the function returns | 
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changeset | 105 | immediately regardless if the request can be satisfied or not. | 
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changeset | 106 | In this case, -1 is returned if the counter was already zero. | 
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changeset | 107 | | 
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changeset | 108 | Parameters : sem - handle of semaphore | 
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changeset | 109 | | 
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changeset | 110 | Return : 0 = succees | 
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changeset | 111 | 1 = error | 
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changeset | 112 +------------------------------------------------------------------------------ | 
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changeset | 113 */ | 
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changeset | 114 int gdd_sys_sem_down(T_GDD_SEM sem); | 
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changeset | 115 | 
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changeset | 116 | 
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changeset | 117 /* | 
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changeset | 118 +------------------------------------------------------------------------------ | 
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changeset | 119 | Function : gdd_sys_sem_down | 
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changeset | 120 +------------------------------------------------------------------------------ | 
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changeset | 121 | Description : Releases a semaphore, i.e. counter is incremented. | 
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changeset | 122 | | 
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changeset | 123 | Parameters : sem - handle of semaphore | 
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changeset | 124 | | 
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changeset | 125 | Return : 0 = succees | 
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changeset | 126 | 1 = error | 
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changeset | 127 +------------------------------------------------------------------------------ | 
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changeset | 128 */ | 
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changeset | 129 int gdd_sys_sem_up(T_GDD_SEM sem); | 
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changeset | 130 | 
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changeset | 131 | 
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changeset | 132 /* | 
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changeset | 133 +------------------------------------------------------------------------------ | 
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changeset | 134 | Function : gdd_sys_sem_status | 
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changeset | 135 +------------------------------------------------------------------------------ | 
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changeset | 136 | Description : Query (obtain) the counter of a semaphore. | 
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changeset | 137 | | 
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changeset | 138 | Parameters : sem - handle of semaphore | 
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changeset | 139 | count - output variable to pass back the counter | 
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changeset | 140 | | 
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changeset | 141 | Return : 0 = succees | 
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changeset | 142 | 1 = error | 
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changeset | 143 +------------------------------------------------------------------------------ | 
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changeset | 144 */ | 
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changeset | 145 int gdd_sys_sem_status(T_GDD_SEM sem, /*out*/ unsigned short * count); | 
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changeset | 146 | 
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changeset | 147 | 
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changeset | 148 #endif /* GDD_SYS_H */ | 
