Change the FILE locking to be by FILE, not by the underlying fd as

it was. Add a FILE_WAIT state and queue threads waiting for a FILE
lock. Start using the sys/queue.h macros instead of the way that MIT
pthreads did it.

Add a thread name to the private thread structure and a non-POSIX
function to set this. This helps (me at least) when sending a SIGINFO
to a threaded process to get a /tmp/uthread.dump to see what the
<expletive deleted> threads are doing this time. It is nice to be
able to recognise (yes, I spell that with an 's' too) which threads
are which.

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/libpthread/thread/thr_create.c b/lib/libpthread/thread/thr_create.c
index 3dcd944..c9c6c9f 100644
--- a/lib/libpthread/thread/thr_create.c
+++ b/lib/libpthread/thread/thr_create.c
@@ -40,6 +40,7 @@
 #include <machine/reg.h>
 #include <pthread.h>
 #include "pthread_private.h"
+#include "libc_private.h"
 
 int
 _thread_create(pthread_t * thread, const pthread_attr_t * attr,
@@ -254,6 +255,12 @@ pthread_create(pthread_t * thread, const pthread_attr_t * attr,
 	int             ret = 0;
 
 	/*
+	 * Locking functions in libc are required when there are
+	 * threads other than the initial thread.
+	 */
+	__isthreaded = 1;
+
+	/*
 	 * Call the low level thread creation function which allows a parent
 	 * thread to be specified: 
 	 */