Implement pthread_attr_[gs]etguardsize(). Non-default-size stacks used to

be malloc()ed, but they are now allocated using mmap(), just as the
default-size stacks are.  A separate cache of stacks is kept for
non-default-size stacks.

Collaboration with:	deischen

1 files changed, 1 insertions, 4 deletions

diff --git a/lib/libpthread/thread/thr_init.c b/lib/libpthread/thread/thr_init.c
index b63a111..9f10f74 100644
--- a/lib/libpthread/thread/thr_init.c
+++ b/lib/libpthread/thread/thr_init.c
@@ -268,9 +268,6 @@ _thread_init(void)
 		memcpy((void *) &_thread_initial->attr, &pthread_attr_default,
 		    sizeof(struct pthread_attr));
 
-		/* Initialize the thread stack cache: */
-		SLIST_INIT(&_stackq);
-
 		/*
 		 * Create a red zone below the main stack.  All other stacks are
 		 * constrained to a maximum size by the paramters passed to
@@ -279,7 +276,7 @@ _thread_init(void)
 		 * thread stack that is just beyond.
 		 */
 		if (mmap((void *) USRSTACK - PTHREAD_STACK_INITIAL -
-		    PTHREAD_STACK_GUARD, PTHREAD_STACK_GUARD, 0, MAP_ANON,
+		    PTHREAD_GUARD_DEFAULT, PTHREAD_GUARD_DEFAULT, 0, MAP_ANON,
 		    -1, 0) == MAP_FAILED)
 			PANIC("Cannot allocate red zone for initial thread");