*
* Copyright 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999, 2000, 2001 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See README.devlib for information.
+ *
* -->
*
* \brief IPC signals implementation.
#include "signal.h"
+#include <cfg/debug.h>
+#include <drv/timer.h>
#include <kern/proc.h>
#include <kern/proc_p.h>
-#include <cfg/debug.h>
+
#if CONFIG_KERN_SIGNALS
/**
* Check if any of the signals in \a sigs has occurred and clear them.
- * Return the signals that have occurred.
+ * \return the signals that have occurred.
*/
sigmask_t sig_check(sigmask_t sigs)
{
/**
* Sleep until any of the signals in \a sigs occurs.
- * Return the signal(s) that have awaked the process.
+ * \return the signal(s) that have awaked the process.
*/
sigmask_t sig_wait(sigmask_t sigs)
{
return result;
}
+/**
+ * Sleep until any of the signals in \a sigs or \a timeout ticks elapse.
+ * If the timeout elapse a SIG_TIMEOUT is added to the received signal(s).
+ * \return the signal(s) that have awaked the process.
+ * \note Caller must check return value to check which signal has awaked the process.
+ */
+sigmask_t sig_waitTimeout(sigmask_t sigs, ticks_t timeout)
+{
+ Timer t;
+
+ ASSERT(!sig_check(SIG_TIMEOUT));
+ ASSERT(!(sigs & SIG_TIMEOUT));
+ timer_set_event_signal(&t, proc_current(), SIG_TIMEOUT);
+ timer_setDelay(&t, timeout);
+ timer_add(&t);
+ return sig_wait(SIG_TIMEOUT | sigs);
+}
+
/**
* Send the signals \a sigs to the process \a proc.