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comparison src/gpf/frame/vsi_sem.c @ 0:4e78acac3d88

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src/{condat,cs,gpf,nucleus}: import from Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:23:26 +0000
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-1:000000000000 0:4e78acac3d88
1 /*
2 +------------------------------------------------------------------------------
3 | File: vsi_sem.c
4 +------------------------------------------------------------------------------
5 | Copyright 2002 Texas Instruments Berlin, AG
6 | All rights reserved.
7 |
8 | This file is confidential and a trade secret of Texas
9 | Instruments Berlin, AG
10 | The receipt of or possession of this file does not convey
11 | any rights to reproduce or disclose its contents or to
12 | manufacture, use, or sell anything it may describe, in
13 | whole, or in part, without the specific written consent of
14 | Texas Instruments Berlin, AG.
15 +-----------------------------------------------------------------------------
16 | Purpose : This Module defines the virtual system interface part
17 | for the semaphore handling.
18 +-----------------------------------------------------------------------------
19 */
20
21 #ifndef __VSI_SEM_C__
22 #define __VSI_SEM_C__
23 #endif
24
25 /*==== INCLUDES ===================================================*/
26
27 #include "typedefs.h"
28 #include "vsi.h"
29 #include "os.h"
30 #include "frm_defs.h"
31 #include "frm_types.h"
32 #include "frm_glob.h"
33
34 /*==== TYPES ======================================================*/
35
36
37 /*==== CONSTANTS ==================================================*/
38
39
40 /*==== EXTERNALS ==================================================*/
41 /* -------------- S H A R E D - BEGIN ---------------- */
42 #ifdef _TOOLS_
43 #pragma data_seg("FRAME_SHARED")
44 #endif
45
46 /*==== VARIABLES ==================================================*/
47
48
49 #ifdef _TOOLS_
50 #pragma data_seg()
51 #endif
52 /* -------------- S H A R E D - END ---------------- */
53
54 /*==== FUNCTIONS ==================================================*/
55
56
57 #ifndef RUN_INT_RAM
58 /*
59 +--------------------------------------------------------------------+
60 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
61 | STATE : code ROUTINE : vsi_s_open |
62 +--------------------------------------------------------------------+
63
64 PURPOSE : opens a semaphore, creates if not exist
65
66 */
67
68 T_HANDLE vsi_s_open (T_HANDLE Caller, char *Name, USHORT Count)
69 {
70 OS_HANDLE SemHandle;
71
72 /*
73 * if semaphore already exists, return handle
74 */
75 if ( os_OpenSemaphore ( Caller, Name, &SemHandle ) != OS_ERROR )
76 return SemHandle;
77
78 /*
79 * if semaphore not exists, create
80 */
81 if ( os_CreateSemaphore ( Caller, Name, Count, &SemHandle, pf_TaskTable[Caller].MemPoolHandle ) != OS_ERROR )
82 return SemHandle;
83 else
84 vsi_o_assert( Caller, OS_SYST_ERR_MAX_SEMA, __FILE__, __LINE__,
85 "Number of created semaphores > MAX_SEMAPHORES" );
86
87 /*
88 * if semaphore cannot be created, return VSI_ERROR
89 */
90 return VSI_ERROR;
91 }
92 #endif
93
94 #ifndef RUN_INT_RAM
95 /*
96 +--------------------------------------------------------------------+
97 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
98 | STATE : code ROUTINE : vsi_s_close |
99 +--------------------------------------------------------------------+
100
101 PURPOSE : closes a semaphore
102
103 */
104
105 int vsi_s_close (T_HANDLE Caller, T_HANDLE SemHandle)
106 {
107
108 if ( os_CloseSemaphore ( Caller, SemHandle ) != OS_ERROR )
109 return VSI_OK;
110
111 return VSI_ERROR;
112 }
113 #endif
114
115 #ifndef RUN_FLASH
116 /*
117 +--------------------------------------------------------------------+
118 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
119 | STATE : code ROUTINE : vsi_s_get |
120 +--------------------------------------------------------------------+
121
122 PURPOSE : obtains a semaphore
123
124 */
125
126 int vsi_s_get (T_HANDLE Caller, T_HANDLE SemHandle)
127 {
128 LONG Status;
129
130 Status = os_ObtainSemaphore ( Caller, SemHandle, OS_SUSPEND );
131 if ( Status == OS_OK || Status == OS_WAITED )
132 return VSI_OK;
133
134 return VSI_ERROR;
135 }
136 #endif
137
138 #ifndef RUN_FLASH
139 /*
140 +--------------------------------------------------------------------+
141 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
142 | STATE : code ROUTINE : vsi_s_release |
143 +--------------------------------------------------------------------+
144
145 PURPOSE : releases a semaphore
146
147 */
148
149 int vsi_s_release (T_HANDLE Caller, T_HANDLE SemHandle)
150 {
151
152 if ( os_ReleaseSemaphore ( Caller, SemHandle ) != OS_ERROR )
153 return VSI_OK;
154
155 return VSI_ERROR;
156 }
157 #endif
158
159 #ifndef RUN_INT_RAM
160 /*
161 +--------------------------------------------------------------------+
162 | PROJECT : GSM-Frame (8415) MODULE : VSI_SEM |
163 | STATE : code ROUTINE : vsi_s_status |
164 +--------------------------------------------------------------------+
165
166 PURPOSE : request the current count of a semaphore
167
168 */
169
170 int vsi_s_status (T_HANDLE Caller, T_HANDLE SemHandle, USHORT *Count )
171 {
172
173 if ( os_QuerySemaphore ( Caller, SemHandle, Count ) != OS_ERROR )
174 return VSI_OK;
175
176 return VSI_ERROR;
177 }
178 #endif
179