From 62c535fff55c3495738ba27cd5167e12fa577f17 Mon Sep 17 00:00:00 2001
From: Pekka Riikonen <priikone@silcnet.org>
Date: Sat, 21 Oct 2006 13:45:45 +0000
Subject: [PATCH] 	SILC_FSM_THREAD_WAIT continues to next state if
 already terminated.

---
 lib/silcutil/silcfsm.c | 8 +++++++-
 lib/silcutil/silcfsm.h | 9 ++++++---
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/lib/silcutil/silcfsm.c b/lib/silcutil/silcfsm.c
index 7a0bf4ac..c94425d0 100644
--- a/lib/silcutil/silcfsm.c
+++ b/lib/silcutil/silcfsm.c
@@ -318,12 +318,18 @@ void *silc_fsm_get_state_context(void *fsm)
 SilcBool silc_fsm_thread_wait(void *fsm, void *thread)
 {
   SilcFSM t = thread;
+
 #if defined(SILC_DEBUG)
   assert(t->thread);
 #endif /* SILC_DEBUG */
+
+  if (t->finished)
+    return FALSE;
   t->u.t.sema = silc_fsm_sema_alloc(t->u.t.fsm, 0);
   if (!t->u.t.sema)
     return FALSE;
+
+  SILC_LOG_DEBUG(("Waiting for thread %p to terminate", thread));
   silc_fsm_sema_wait(t->u.t.sema, fsm);
   return TRUE;
 }
@@ -649,7 +655,7 @@ static void silc_fsm_thread_termination_post(SilcFSMSema sema)
   SilcFSM fsm;
   SilcMutex lock = sema->fsm->u.m.lock;
 
-  SILC_LOG_DEBUG(("Post thread termination semaphore %p", sema));
+  SILC_LOG_DEBUG(("Post thread terminate semaphore %p", sema));
 
   silc_mutex_lock(lock);
 
diff --git a/lib/silcutil/silcfsm.h b/lib/silcutil/silcfsm.h
index 0eb707c8..8468c4fd 100644
--- a/lib/silcutil/silcfsm.h
+++ b/lib/silcutil/silcfsm.h
@@ -307,7 +307,9 @@ do {						\
  *
  *    Macro used to wait for the `thread' to terminate.  The machine or
  *    thread will be suspended while it is waiting for the thread to
- *    terminate.
+ *    terminate.  If the thread to be waited has already terminated (but
+ *    the context has not been freed yet), this will continue immediately
+ *    to the following state without waiting.
  *
  * NOTES
  *
@@ -325,8 +327,9 @@ do {						\
  ***/
 #define SILC_FSM_THREAD_WAIT(thread)		\
 do {						\
-  silc_fsm_thread_wait(fsm, thread);		\
-  return SILC_FSM_WAIT;				\
+  if (silc_fsm_thread_wait(fsm, thread))	\
+    return SILC_FSM_WAIT;			\
+  return SILC_FSM_CONTINUE;			\
 } while(0)
 
 /****f* silcutil/SilcFSMAPI/silc_fsm_alloc
-- 
2.24.0