sync with FreeBSD (rwlock, gc thread, man pages)

add (broken) mips md stuff
fix some const warnings
add sigaltstack() stub
another hash at getting shlib auto-init to work (mips/elf and i386/a.out)

1 files changed, 19 insertions, 2 deletions

diff --git a/lib/libpthread/uthread/uthread_create.c b/lib/libpthread/uthread/uthread_create.c
index 53759d8f440..68db603cac2 100644
--- a/lib/libpthread/uthread/uthread_create.c
+++ b/lib/libpthread/uthread/uthread_create.c
@@ -44,9 +44,9 @@ int
 pthread_create(pthread_t * thread, const pthread_attr_t * attr,
 	       void *(*start_routine) (void *), void *arg)
 {
-	int             i;
+	int		f_gc = 0;
 	int             ret = 0;
-	int             status;
+	pthread_t	gc_thread;
 	pthread_t       new_thread;
 	pthread_attr_t	pattr;
 	void           *stack;
@@ -149,6 +149,12 @@ pthread_create(pthread_t * thread, const pthread_attr_t * attr,
 			/* Lock the thread list: */
 			_lock_thread_list();
 
+			/*
+			 * Check if the garbage collector thread
+			 * needs to be started.
+			 */
+			f_gc = (_thread_link_list == _thread_initial);
+
 			/* Add the thread to the linked list of all threads: */
 			new_thread->nxt = _thread_link_list;
 			_thread_link_list = new_thread;
@@ -161,6 +167,14 @@ pthread_create(pthread_t * thread, const pthread_attr_t * attr,
 
 			/* Schedule the new user thread: */
 			_thread_kern_sched(NULL);
+
+			/*
+			 * Start a garbage collector thread
+			 * if necessary.
+			 */
+			if (f_gc && pthread_create(&gc_thread,NULL,
+				    _thread_gc,NULL) != 0)
+				PANIC("Can't create gc thread");
 		}
 	}
 
@@ -171,6 +185,9 @@ pthread_create(pthread_t * thread, const pthread_attr_t * attr,
 void
 _thread_start(void)
 {
+	/* We just left the scheduler via longjmp: */
+	_thread_kern_in_sched = 0;
+
 	/* Run the current thread's start routine with argument: */
 	pthread_exit(_thread_run->start_routine(_thread_run->arg));