From 6eb79f812ee43a4e9142de61a5821e0cc8c52bb1 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sun, 26 Apr 2015 15:47:47 +0200
Subject: kern: gracefully handle resource shortage

* kern/thread.c (stack_alloc): Report resource shortage.
* kern/sched_prim.h (stack_alloc): Adjust declaration accordingly.
* kern/thread_swap.c (thread_doswapin): Report resource shortage.
(swapin_thread_continue): If the swap-in fails, put the thread back on
the queue and go back to sleep.
* kern/thread_swap.h (thread_doswapin): Adjust declaration accordingly.
---
 kern/sched_prim.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'kern/sched_prim.h')

diff --git a/kern/sched_prim.h b/kern/sched_prim.h
index fd989b6c..62698dc2 100644
--- a/kern/sched_prim.h
+++ b/kern/sched_prim.h
@@ -150,7 +150,7 @@ extern void	stack_handoff(
  *	or are defined directly by machine-dependent code.
  */
 
-extern void	stack_alloc(
+extern kern_return_t	stack_alloc(
 	thread_t	thread,
 	void		(*resume)(thread_t));
 extern boolean_t stack_alloc_try(
-- 
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