5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2001 - 2006 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
23 /**************************** SILC Thread API *******************************/
27 /* Thread structure for WIN32 */
30 SilcThreadStart start_func;
35 static DWORD silc_thread_tls;
37 /* Actual routine that is called by WIN32 when the thread is created.
38 We will call the start_func from here. When this returns the thread
41 unsigned __stdcall silc_thread_win32_start(void *context)
43 SilcWin32Thread thread = (SilcWin32Thread)context;
45 TlsSetValue(silc_thread_tls, context);
46 silc_thread_exit(thread->start_func(thread->context));
52 SilcThread silc_thread_create(SilcThreadStart start_func, void *context,
56 SilcWin32Thread thread;
59 SILC_LOG_DEBUG(("Creating new thread"));
61 thread = silc_calloc(1, sizeof(*thread));
62 thread->start_func = start_func;
63 thread->context = context;
64 thread->waitable = waitable;
66 CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)silc_thread_win32_start,
67 (void *)thread, 0, &id);
69 if (!thread->thread) {
70 SILC_LOG_ERROR(("Could not create new thread"));
75 return (SilcThread)thread;
77 /* Call thread callback immediately */
78 (*start_func)(context);
83 void silc_thread_exit(void *exit_value)
86 SilcWin32Thread thread = TlsGetValue(silc_thread_tls);
89 /* If the thread is waitable the memory is freed only in silc_thread_wait
90 by another thread. If not waitable, free it now. */
91 if (!thread->waitable) {
92 TerminateThread(thread->thread, 0);
96 TlsSetValue(silc_thread_tls, NULL);
102 SilcThread silc_thread_self(void)
105 SilcWin32Thread self = TlsGetValue(silc_thread_tls);
108 /* This should only happen for the main thread! */
109 HANDLE handle = GetCurrentThread ();
110 HANDLE process = GetCurrentProcess ();
111 self = silc_calloc(1, sizeof(*self));
112 DuplicateHandle(process, handle, process,
113 &self->thread, 0, FALSE,
114 DUPLICATE_SAME_ACCESS);
115 TlsSetValue(silc_thread_tls, self);
118 return (SilcThread)self;
124 SilcBool silc_thread_wait(SilcThread thread, void **exit_value)
127 SilcWin32Thread self = (SilcWin32Thread)thread;
129 SILC_LOG_DEBUG(("Waiting for thread %p", self));
134 /* The thread is waitable thus we will free all memory after the
135 WaitForSingleObject returns, the thread is destroyed after that. */
136 if (WaitForSingleObject(self->thread, 2500) == WAIT_TIMEOUT)
137 TerminateThread(self->thread, 0);
150 /***************************** SILC Mutex API *******************************/
152 /* SILC Mutex structure */
153 struct SilcMutexStruct {
155 CRITICAL_SECTION mutex;
156 #endif /* SILC_THREADS */
157 unsigned int locked : 1;
160 SilcBool silc_mutex_alloc(SilcMutex *mutex)
163 *mutex = silc_calloc(1, sizeof(**mutex));
166 InitializeCriticalSection(&((*mutex)->mutex));
170 #endif /* SILC_THREADS */
173 void silc_mutex_free(SilcMutex mutex)
177 DeleteCriticalSection(&mutex->mutex);
180 #endif /* SILC_THREADS */
183 void silc_mutex_lock(SilcMutex mutex)
187 EnterCriticalSection(&mutex->mutex);
188 SILC_ASSERT(mutex->locked == FALSE);
189 mutex->locked = TRUE;
191 #endif /* SILC_THREADS */
194 void silc_mutex_unlock(SilcMutex mutex)
198 SILC_ASSERT(mutex->locked == TRUE);
199 mutex->locked = FALSE;
200 LeaveCriticalSection(&mutex->mutex);
202 #endif /* SILC_THREADS */
205 void silc_mutex_assert_locked(SilcMutex mutex)
209 SILC_ASSERT(mutex->locked);
210 #endif /* SILC_THREADS */
214 /**************************** SILC Cond API ******************************/
216 /* SILC Conditional Variable context */
217 struct SilcCondStruct {
220 #endif /* SILC_THREADS*/
221 unsigned int waiters : 23;
222 unsigned int signal : 1;
225 SilcBool silc_cond_alloc(SilcCond *cond)
228 *cond = silc_calloc(1, sizeof(**cond));
231 (*cond)->event = CreateEvent(NULL, TRUE, FALSE, NULL);
235 #endif /* SILC_THREADS*/
238 void silc_cond_free(SilcCond cond)
241 CloseHandle(cond->event);
243 #endif /* SILC_THREADS*/
246 void silc_cond_signal(SilcCond cond)
250 SetEvent(cond->event);
251 #endif /* SILC_THREADS*/
254 void silc_cond_broadcast(SilcCond cond)
258 SetEvent(cond->event);
259 #endif /* SILC_THREADS*/
262 void silc_cond_wait(SilcCond cond, SilcMutex mutex)
265 silc_cond_timedwait(cond, mutex, NULL);
266 #endif /* SILC_THREADS*/
269 SilcBool silc_cond_timedwait(SilcCond cond, SilcMutex mutex,
273 DWORD ret, t = INFINITE;
280 silc_mutex_unlock(mutex);
282 ret = WaitForSingleObject(cond->event, t);
284 silc_mutex_lock(mutex);
287 if (ret != WAIT_OBJECT_0)
291 cond->signal = FALSE;
292 ResetEvent(cond->event);
296 #endif /* SILC_THREADS*/