-/* $Id $ */
-
-/* timed_thread.h
- * Author: Philip Kovacs
+/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
+ *
+ * timed_thread.h: Abstraction layer for timed threads
+ *
+ * Copyright (C) 2006-2007 Philip Kovacs pkovacs@users.sourceforge.net
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * Abstraction layer for timed threads
- * */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+ * USA. */
+#ifndef _TIMED_THREAD_H_
+#define _TIMED_THREAD_H_
-#define MINIMUM_INTERVAL_USECS 50000 /* 50000 microseconds = 50 ms = 0.05 sec */
+#include <stdlib.h>
+
+/* 10000 microseconds = 10 ms = 0.01 sec */
+#define MINIMUM_INTERVAL_USECS 10000
/* opaque structure for clients */
typedef struct _timed_thread timed_thread;
-/* create a timed thread */
-timed_thread* timed_thread_create (void *(*start_routine)(void*), void *arg, unsigned int interval_ms);
+/* create a timed thread (object creation only) */
+timed_thread *timed_thread_create(void *start_routine(void *), void *arg,
+ unsigned int interval_usecs);
+
+/* run a timed thread (drop the thread and run it) */
+int timed_thread_run(timed_thread *p_timed_thread);
/* destroy a timed thread */
-void timed_thread_destroy (timed_thread* p_timed_thread, timed_thread** addr_of_p_timed_thread);
+void timed_thread_destroy(timed_thread *p_timed_thread,
+ timed_thread **addr_of_p_timed_thread);
/* lock a timed thread for critical section activity */
-int timed_thread_lock (timed_thread* p_timed_thread);
+int timed_thread_lock(timed_thread *p_timed_thread);
/* unlock a timed thread after critical section activity */
-int timed_thread_unlock (timed_thread* p_timed_thread);
+int timed_thread_unlock(timed_thread *p_timed_thread);
-/* waits required interval for termination signal and returns 1 if got it, 0 otherwise */
-int timed_thread_test (timed_thread* p_timed_thread);
+/* waits required interval (unless override_wait_time is non-zero) for
+ * termination signal returns 1 if received, 0 otherwise. should also return 1
+ * if the thread has been asked kindly to die. */
+int timed_thread_test(timed_thread *p_timed_thread, int override_wait_time);
/* exit a timed thread */
-void timed_thread_exit (timed_thread* p_timed_thread);
+void timed_thread_exit(timed_thread *p_timed_thread) __attribute__((noreturn));
-/* register a timed thread for future destruction */
-int timed_thread_register (timed_thread* p_timed_thread, timed_thread** addr_of_p_timed_thread);
+/* register a timed thread for future destruction via
+ * timed_thread_destroy_registered_threads() */
+int timed_thread_register(timed_thread *p_timed_thread,
+ timed_thread **addr_of_p_timed_thread);
/* destroy all registered timed threads */
-void timed_thread_destroy_registered_threads (void);
+void timed_thread_destroy_registered_threads(void);
+
+/* returns read file descriptor for thread pipe */
+int timed_thread_readfd(timed_thread *p_timed_thread);
+
+#endif /* #ifdef _TIMED_THREAD_H_ */