* sync.c (pthread_join): Save valueptr arg in joinvalueptr for

	pthread_exit() to use.

	* private.c (_pthread_new_thread_entry): Initialise joinvalueptr to
	NULL.

	* create.c (_pthread_start_call): Rewrite to facilitate joins.
	pthread_exit() will do a longjmp() back to here. Does appropriate
	cleanup and exit/return from the thread.
	(pthread_create): _beginthreadex() now passes a pointer to our
	thread table entry instead of just the call member of that entry.

	* implement.h (_pthread_threads_thread): New member
	void ** joinvalueptr.
	(_pthread_call_t): New member jmpbuf env.

	* exit.c (pthread_exit): Major rewrite to handle joins and handing
	value pointer to joining thread. Uses longjmp() back to
	_pthread_start_call().

1 files changed, 2 insertions, 0 deletions

diff --git a/implement.h b/implement.h
index 14fbdbb..b72e273 100644
--- a/implement.h
+++ b/implement.h
@@ -37,6 +37,7 @@ struct _pthread_handler_node {
 typedef struct {
   unsigned (*routine)(void *);
   void * arg;
+  jmpbuf env;
 } _pthread_call_t;
 
 #define _PTHREAD_THIS (_pthread_find_thread_entry(pthread_this()))
@@ -51,6 +52,7 @@ struct _pthread_threads_thread {
   pthread_t                   thread;
   pthread_attr_t              attr;
   _pthread_call_t             call;
+  void **                     joinvalueptr;
   _pthread_handler_node_t *   cleanupstack;
   _pthread_handler_node_t *   destructorstack;
   _pthread_handler_node_t *   forkpreparestack;