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From e9ce90462680d53e9918aeb45ed53a33af6867d3 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sat, 25 Jul 2015 01:46:53 +0200
Subject: [PATCH gnumach 01/10] kern: new function `thread_sleep_lock'
* kern/sched_prim.c (thread_sleep_lock): New function.
* kern/sched_prim.h (thread_sleep_lock): New delcaration.
---
kern/sched_prim.c | 18 ++++++++++++++++++
kern/sched_prim.h | 4 ++++
2 files changed, 22 insertions(+)
diff --git a/kern/sched_prim.c b/kern/sched_prim.c
index e8f260e..e354a21 100644
--- a/kern/sched_prim.c
+++ b/kern/sched_prim.c
@@ -458,6 +458,24 @@ void thread_sleep(
}
/*
+ * thread_sleep_lock:
+ *
+ * Cause the current thread to wait until the specified event
+ * occurs. The specified lock is unlocked before releasing
+ * the cpu. (This is a convenient way to sleep without manually
+ * calling assert_wait).
+ */
+void thread_sleep_lock(
+ event_t event,
+ lock_t lock,
+ boolean_t interruptible)
+{
+ assert_wait(event, interruptible); /* assert event */
+ lock_done(lock); /* release the lock */
+ thread_block((void (*)()) 0); /* block ourselves */
+}
+
+/*
* thread_bind:
*
* Force a thread to execute on the specified processor.
diff --git a/kern/sched_prim.h b/kern/sched_prim.h
index 62698dc..83d4594 100644
--- a/kern/sched_prim.h
+++ b/kern/sched_prim.h
@@ -69,6 +69,10 @@ extern void thread_sleep(
event_t event,
simple_lock_t lock,
boolean_t interruptible);
+extern void thread_sleep_lock(
+ event_t event,
+ lock_t lock,
+ boolean_t interruptible);
extern void thread_wakeup(void); /* for function pointers */
extern void thread_wakeup_prim(
event_t event,
--
2.1.4
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