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;
159 #endif /* SILC_THREADS */
162 SilcBool silc_mutex_alloc(SilcMutex *mutex)
165 *mutex = silc_calloc(1, sizeof(**mutex));
168 InitializeCriticalSection(&((*mutex)->mutex));
172 #endif /* SILC_THREADS */
175 void silc_mutex_free(SilcMutex mutex)
179 DeleteCriticalSection(&mutex->mutex);
182 #endif /* SILC_THREADS */
185 void silc_mutex_lock(SilcMutex mutex)
189 EnterCriticalSection(&mutex->mutex);
190 assert(mutex->locked == FALSE);
191 mutex->locked = TRUE;
193 #endif /* SILC_THREADS */
196 void silc_mutex_unlock(SilcMutex mutex)
200 assert(mutex->locked == TRUE);
201 mutex->locked = FALSE;
202 LeaveCriticalSection(&mutex->mutex);
204 #endif /* SILC_THREADS */
208 /**************************** SILC CondVar API ******************************/
210 /* SILC Conditional Variable context */
211 struct SilcCondVarStruct {
214 #endif /* SILC_THREADS*/
215 unsigned int waiters : 23;
216 unsigned int signal : 1;
219 SilcBool silc_condvar_alloc(SilcCondVar *cond)
222 *cond = silc_calloc(1, sizeof(**cond));
225 (*cond)->event = CreateEvent(NULL, TRUE, FALSE, NULL);
229 #endif /* SILC_THREADS*/
232 void silc_condvar_free(SilcCondVar cond)
235 CloseHandle(cond->event);
237 #endif /* SILC_THREADS*/
240 void silc_condvar_signal(SilcCondVar cond)
244 SetEvent(cond->event);
245 #endif /* SILC_THREADS*/
248 void silc_condvar_broadcast(SilcCondVar cond)
252 SetEvent(cond->event);
253 #endif /* SILC_THREADS*/
256 void silc_condvar_wait(SilcCondVar cond, SilcMutex mutex)
259 silc_condvar_timedwait(cond, mutex, NULL);
260 #endif /* SILC_THREADS*/
263 SilcBool silc_condvar_timedwait(SilcCondVar cond, SilcMutex mutex,
267 DWORD ret, t = INFINITE;
274 silc_mutex_unlock(mutex);
276 ret = WaitForSingleObject(cond->event, t);
278 silc_mutex_lock(mutex);
281 if (ret != WAIT_OBJECT_0)
285 cond->signal = FALSE;
286 ResetEvent(cond->event);
290 #endif /* SILC_THREADS*/