From 35f329e05c49048f457fd6923fddd31fc700a6ac Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Fri, 1 Sep 2017 23:52:56 +0200
Subject: [PATCH] sys/xtimer: add xtimer_set_timeout_flag()
---
sys/include/xtimer.h | 11 +++++++++++
sys/xtimer/xtimer.c | 19 +++++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/sys/include/xtimer.h b/sys/include/xtimer.h
index eab6301f25..9ee060a014 100644
--- a/sys/include/xtimer.h
+++ b/sys/include/xtimer.h
@@ -439,6 +439,17 @@ static inline bool xtimer_less64(xtimer_ticks64_t a, xtimer_ticks64_t b);
*/
int xtimer_mutex_lock_timeout(mutex_t *mutex, uint64_t us);
+/**
+ * @brief Set timeout thread flag after @p timeout
+ *
+ * This function will set THREAD_FLAG_TIMEOUT on the current thread after @p
+ * timeout usec have passed.
+ *
+ * @param[in] t timer struct to use
+ * @param[in] timeout timeout in usec
+ */
+void xtimer_set_timeout_flag(xtimer_t *t, uint32_t timeout);
+
/**
* @brief xtimer backoff value
*
diff --git a/sys/xtimer/xtimer.c b/sys/xtimer/xtimer.c
index c8dd377b5a..612bbc9622 100644
--- a/sys/xtimer/xtimer.c
+++ b/sys/xtimer/xtimer.c
@@ -30,6 +30,10 @@
#include "timex.h"
+#ifdef MODULE_CORE_THREAD_FLAGS
+#include "thread_flags.h"
+#endif
+
#define ENABLE_DEBUG 0
#include "debug.h"
@@ -257,3 +261,18 @@ int xtimer_mutex_lock_timeout(mutex_t *mutex, uint64_t timeout)
xtimer_remove(&t);
return -mt.timeout;
}
+
+#ifdef MODULE_CORE_THREAD_FLAGS
+static void _set_timeout_flag_callback(void* arg)
+{
+ thread_flags_set(arg, THREAD_FLAG_TIMEOUT);
+}
+
+void xtimer_set_timeout_flag(xtimer_t *t, uint32_t timeout)
+{
+ t->callback = _set_timeout_flag_callback;
+ t->arg = (thread_t *)sched_active_thread;
+ thread_flags_clear(THREAD_FLAG_TIMEOUT);
+ xtimer_set(t, timeout);
+}
+#endif
--
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