1 | /* $Id: sems-win32.cpp 2981 2007-06-01 16:01:28Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * innotek Portable Runtime - Semaphores, implementation for Windows host platform.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2007 innotek GmbH
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License as published by the Free Software Foundation,
|
---|
13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
|
---|
14 | * distribution. VirtualBox OSE is distributed in the hope that it will
|
---|
15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | *
|
---|
17 | * If you received this file as part of a commercial VirtualBox
|
---|
18 | * distribution, then only the terms of your commercial VirtualBox
|
---|
19 | * license agreement apply instead of the previous paragraph.
|
---|
20 | */
|
---|
21 |
|
---|
22 |
|
---|
23 | /*******************************************************************************
|
---|
24 | * Header Files *
|
---|
25 | *******************************************************************************/
|
---|
26 | #define LOG_GROUP RTLOGGROUP_SEMAPHORE
|
---|
27 | #include <Windows.h>
|
---|
28 |
|
---|
29 | #include <iprt/semaphore.h>
|
---|
30 | #include <iprt/assert.h>
|
---|
31 | #include <iprt/err.h>
|
---|
32 |
|
---|
33 |
|
---|
34 | /** Converts semaphore to win32 handle. */
|
---|
35 | #define SEM2HND(Sem) ((HANDLE)(uintptr_t)Sem)
|
---|
36 |
|
---|
37 |
|
---|
38 |
|
---|
39 | RTDECL(int) RTSemEventCreate(PRTSEMEVENT pEventSem)
|
---|
40 | {
|
---|
41 | /*
|
---|
42 | * Create the semaphore.
|
---|
43 | * (Auto reset, not signaled, private event object.)
|
---|
44 | */
|
---|
45 | HANDLE hev = CreateEvent(NULL, FALSE, FALSE, NULL);
|
---|
46 | if (hev)
|
---|
47 | {
|
---|
48 | *pEventSem = (RTSEMEVENT)(void *)hev;
|
---|
49 | return VINF_SUCCESS;
|
---|
50 | }
|
---|
51 | return RTErrConvertFromWin32(GetLastError());
|
---|
52 | }
|
---|
53 |
|
---|
54 |
|
---|
55 | RTDECL(int) RTSemEventDestroy(RTSEMEVENT EventSem)
|
---|
56 | {
|
---|
57 | /*
|
---|
58 | * Close semaphore handle.
|
---|
59 | */
|
---|
60 | if (CloseHandle(SEM2HND(EventSem)))
|
---|
61 | return VINF_SUCCESS;
|
---|
62 | AssertMsgFailed(("Destroy EventSem %p failed, lasterr=%d\n", EventSem, GetLastError()));
|
---|
63 | return RTErrConvertFromWin32(GetLastError());
|
---|
64 | }
|
---|
65 |
|
---|
66 |
|
---|
67 | RTDECL(int) RTSemEventWaitNoResume(RTSEMEVENT EventSem, unsigned cMillies)
|
---|
68 | {
|
---|
69 | /*
|
---|
70 | * Wait for condition.
|
---|
71 | */
|
---|
72 | int rc = WaitForSingleObjectEx(SEM2HND(EventSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
|
---|
73 | switch (rc)
|
---|
74 | {
|
---|
75 | case WAIT_OBJECT_0: return VINF_SUCCESS;
|
---|
76 | case WAIT_TIMEOUT: return VERR_TIMEOUT;
|
---|
77 | case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
|
---|
78 | case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
|
---|
79 | default:
|
---|
80 | {
|
---|
81 | AssertMsgFailed(("Wait on EventSem %p failed, rc=%d lasterr=%d\n", EventSem, rc, GetLastError()));
|
---|
82 | int rc2 = RTErrConvertFromWin32(GetLastError());
|
---|
83 | if (rc2)
|
---|
84 | return rc2;
|
---|
85 |
|
---|
86 | AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
|
---|
87 | return VERR_INTERNAL_ERROR;
|
---|
88 | }
|
---|
89 | }
|
---|
90 | }
|
---|
91 |
|
---|
92 |
|
---|
93 | RTDECL(int) RTSemEventSignal(RTSEMEVENT EventSem)
|
---|
94 | {
|
---|
95 | /*
|
---|
96 | * Signal the object.
|
---|
97 | */
|
---|
98 | if (SetEvent(SEM2HND(EventSem)))
|
---|
99 | return VINF_SUCCESS;
|
---|
100 | AssertMsgFailed(("Signaling EventSem %p failed, lasterr=%d\n", EventSem, GetLastError()));
|
---|
101 | return RTErrConvertFromWin32(GetLastError());
|
---|
102 | }
|
---|
103 |
|
---|
104 |
|
---|
105 |
|
---|
106 |
|
---|
107 | RTDECL(int) RTSemEventMultiCreate(PRTSEMEVENTMULTI pEventMultiSem)
|
---|
108 | {
|
---|
109 | /*
|
---|
110 | * Create the semaphore.
|
---|
111 | * (Manual reset, not signaled, private event object.)
|
---|
112 | */
|
---|
113 | HANDLE hev = CreateEvent(NULL, TRUE, FALSE, NULL);
|
---|
114 | if (hev)
|
---|
115 | {
|
---|
116 | *pEventMultiSem = (RTSEMEVENTMULTI)(void *)hev;
|
---|
117 | return VINF_SUCCESS;
|
---|
118 | }
|
---|
119 | return RTErrConvertFromWin32(GetLastError());
|
---|
120 | }
|
---|
121 |
|
---|
122 |
|
---|
123 | RTDECL(int) RTSemEventMultiDestroy(RTSEMEVENTMULTI EventMultiSem)
|
---|
124 | {
|
---|
125 | /*
|
---|
126 | * Close semaphore handle.
|
---|
127 | */
|
---|
128 | if (CloseHandle(SEM2HND(EventMultiSem)))
|
---|
129 | return VINF_SUCCESS;
|
---|
130 | AssertMsgFailed(("Destroy EventMultiSem %p failed, lasterr=%d\n", EventMultiSem, GetLastError()));
|
---|
131 | return RTErrConvertFromWin32(GetLastError());
|
---|
132 | }
|
---|
133 |
|
---|
134 |
|
---|
135 | RTDECL(int) RTSemEventMultiSignal(RTSEMEVENTMULTI EventMultiSem)
|
---|
136 | {
|
---|
137 | /*
|
---|
138 | * Signal the object.
|
---|
139 | */
|
---|
140 | if (SetEvent(SEM2HND(EventMultiSem)))
|
---|
141 | return VINF_SUCCESS;
|
---|
142 | AssertMsgFailed(("Signaling EventMultiSem %p failed, lasterr=%d\n", EventMultiSem, GetLastError()));
|
---|
143 | return RTErrConvertFromWin32(GetLastError());
|
---|
144 | }
|
---|
145 |
|
---|
146 |
|
---|
147 | RTDECL(int) RTSemEventMultiReset(RTSEMEVENTMULTI EventMultiSem)
|
---|
148 | {
|
---|
149 | /*
|
---|
150 | * Reset the object.
|
---|
151 | */
|
---|
152 | if (ResetEvent(SEM2HND(EventMultiSem)))
|
---|
153 | return VINF_SUCCESS;
|
---|
154 | AssertMsgFailed(("Resetting EventMultiSem %p failed, lasterr=%d\n", EventMultiSem, GetLastError()));
|
---|
155 | return RTErrConvertFromWin32(GetLastError());
|
---|
156 | }
|
---|
157 |
|
---|
158 |
|
---|
159 | RTDECL(int) RTSemEventMultiWaitNoResume(RTSEMEVENTMULTI EventMultiSem, unsigned cMillies)
|
---|
160 | {
|
---|
161 | /*
|
---|
162 | * Wait for condition.
|
---|
163 | */
|
---|
164 | int rc = WaitForSingleObjectEx(SEM2HND(EventMultiSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
|
---|
165 | switch (rc)
|
---|
166 | {
|
---|
167 | case WAIT_OBJECT_0: return VINF_SUCCESS;
|
---|
168 | case WAIT_TIMEOUT: return VERR_TIMEOUT;
|
---|
169 | case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
|
---|
170 | case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
|
---|
171 | default:
|
---|
172 | {
|
---|
173 | AssertMsgFailed(("Wait on EventMultiSem %p failed, rc=%d lasterr=%d\n", EventMultiSem, rc, GetLastError()));
|
---|
174 | int rc2 = RTErrConvertFromWin32(GetLastError());
|
---|
175 | if (rc2)
|
---|
176 | return rc2;
|
---|
177 |
|
---|
178 | AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
|
---|
179 | return VERR_INTERNAL_ERROR;
|
---|
180 | }
|
---|
181 | }
|
---|
182 | }
|
---|
183 |
|
---|
184 |
|
---|
185 |
|
---|
186 |
|
---|
187 | RTDECL(int) RTSemMutexCreate(PRTSEMMUTEX pMutexSem)
|
---|
188 | {
|
---|
189 | /*
|
---|
190 | * Create the semaphore.
|
---|
191 | */
|
---|
192 | HANDLE hmtx = CreateMutex(NULL, FALSE, NULL);
|
---|
193 | if (hmtx)
|
---|
194 | {
|
---|
195 | *pMutexSem = (RTSEMMUTEX)(void *)hmtx;
|
---|
196 | return VINF_SUCCESS;
|
---|
197 | }
|
---|
198 |
|
---|
199 | return RTErrConvertFromWin32(GetLastError());
|
---|
200 | }
|
---|
201 |
|
---|
202 |
|
---|
203 | RTDECL(int) RTSemMutexDestroy(RTSEMMUTEX MutexSem)
|
---|
204 | {
|
---|
205 | /*
|
---|
206 | * Close semaphore handle.
|
---|
207 | */
|
---|
208 | if (CloseHandle(SEM2HND(MutexSem)))
|
---|
209 | return VINF_SUCCESS;
|
---|
210 | AssertMsgFailed(("Destroy MutexSem %p failed, lasterr=%d\n", MutexSem, GetLastError()));
|
---|
211 | return RTErrConvertFromWin32(GetLastError());
|
---|
212 | }
|
---|
213 |
|
---|
214 |
|
---|
215 | RTDECL(int) RTSemMutexRequestNoResume(RTSEMMUTEX MutexSem, unsigned cMillies)
|
---|
216 | {
|
---|
217 | /*
|
---|
218 | * Lock mutex semaphore.
|
---|
219 | */
|
---|
220 | int rc = WaitForSingleObjectEx(SEM2HND(MutexSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
|
---|
221 | switch (rc)
|
---|
222 | {
|
---|
223 | case WAIT_OBJECT_0: return VINF_SUCCESS;
|
---|
224 | case WAIT_TIMEOUT: return VERR_TIMEOUT;
|
---|
225 | case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
|
---|
226 | case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
|
---|
227 | default:
|
---|
228 | {
|
---|
229 | AssertMsgFailed(("Wait on MutexSem %p failed, rc=%d lasterr=%d\n", MutexSem, rc, GetLastError()));
|
---|
230 | int rc2 = RTErrConvertFromWin32(GetLastError());
|
---|
231 | if (rc2 != 0)
|
---|
232 | return rc2;
|
---|
233 |
|
---|
234 | AssertMsgFailed(("WaitForSingleObject(event) -> rc=%d while converted lasterr=%d\n", rc, rc2));
|
---|
235 | return VERR_INTERNAL_ERROR;
|
---|
236 | }
|
---|
237 | }
|
---|
238 | }
|
---|
239 |
|
---|
240 | RTDECL(int) RTSemMutexRelease(RTSEMMUTEX MutexSem)
|
---|
241 | {
|
---|
242 | /*
|
---|
243 | * Unlock mutex semaphore.
|
---|
244 | */
|
---|
245 | if (ReleaseMutex(SEM2HND(MutexSem)))
|
---|
246 | return VINF_SUCCESS;
|
---|
247 | AssertMsgFailed(("Release MutexSem %p failed, lasterr=%d\n", MutexSem, GetLastError()));
|
---|
248 | return RTErrConvertFromWin32(GetLastError());
|
---|
249 | }
|
---|
250 |
|
---|
251 |
|
---|
252 |
|
---|