4 * timed_thread.h: Abstraction layer for timed threads
6 * Copyright (C) 2006 Philip Kovacs pkovacs@users.sourceforge.net
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library 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 GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
25 #ifndef _TIMED_THREAD_H_
26 #define _TIMED_THREAD_H_
28 #define MINIMUM_INTERVAL_USECS 50000 /* 50000 microseconds = 50 ms = 0.05 sec */
30 /* opaque structure for clients */
31 typedef struct _timed_thread timed_thread;
33 /* create a timed thread */
34 timed_thread* timed_thread_create (void *(*start_routine)(void*), void *arg, unsigned int interval_usecs);
36 /* destroy a timed thread */
37 void timed_thread_destroy (timed_thread* p_timed_thread, timed_thread** addr_of_p_timed_thread);
39 /* lock a timed thread for critical section activity */
40 int timed_thread_lock (timed_thread* p_timed_thread);
42 /* unlock a timed thread after critical section activity */
43 int timed_thread_unlock (timed_thread* p_timed_thread);
45 /* waits required interval for termination signal and returns 1 if got it, 0 otherwise */
46 int timed_thread_test (timed_thread* p_timed_thread);
48 /* exit a timed thread */
49 void timed_thread_exit (timed_thread* p_timed_thread);
51 /* register a timed thread for future destruction via timed_thread_destroy_registered_threads() */
52 int timed_thread_register (timed_thread* p_timed_thread, timed_thread** addr_of_p_timed_thread);
54 /* destroy all registered timed threads */
55 void timed_thread_destroy_registered_threads (void);
57 #endif /* #ifdef _TIMED_THREAD_H_ */