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authorUlrich Drepper <drepper@redhat.com>2004-05-18 20:18:14 +0000
committerUlrich Drepper <drepper@redhat.com>2004-05-18 20:18:14 +0000
commit893a351195a2997133892ffac80573a9984ba4cf (patch)
treead1b9f1a9e7d55b25353c57f9fbd5f76c4804054 /nptl/DESIGN-condvar.txt
parentd40eb37aad4145ae4d047b6d7f633f740bf3a610 (diff)
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[BZ #163]
Update.
2004-05-18  Petter Reinholdtsen  <pere@hungry.com>

	* locales/sl_SI [LC_TIME]: Correct d_fmt date format from
	'22.06.2003' to '22. 06. 2003'.  Change requested from Aleks
	Reinhardt, and approved by the locale author Borka
	Jerman-Blazic. [BZ #163]
Diffstat (limited to 'nptl/DESIGN-condvar.txt')
-rw-r--r--nptl/DESIGN-condvar.txt30
1 files changed, 26 insertions, 4 deletions
diff --git a/nptl/DESIGN-condvar.txt b/nptl/DESIGN-condvar.txt
index cb0f59c823..4845251c75 100644
--- a/nptl/DESIGN-condvar.txt
+++ b/nptl/DESIGN-condvar.txt
@@ -23,16 +23,30 @@ struct pthread_cond_t {
 
      sequence number of last woken thread.
 
+   uint32_t broadcast_seq;
+
+}
+
+
+struct cv_data {
+
+   pthread_cond_t *cv;
+
+   uint32_t bc_seq
+
 }
 
 
 
-cleanup_handler(cv)
+cleanup_handler(cv_data)
 {
+  cv = cv_data->cv;
   lll_lock(cv->lock);
 
-  ++cv->wakeup_seq;
-  ++cv->woken_seq;
+  if (cv_data->bc_seq == cv->broadcast_seq) {
+    ++cv->wakeup_seq;
+    ++cv->woken_seq;
+  }
 
   /* make sure no signal gets lost.  */
   FUTEX_WAKE(cv->wakeup_seq, ALL);
@@ -50,12 +64,14 @@ cond_timedwait(cv, mutex, timeout):
 
    ++cv->total_seq;
    val = seq =  cv->wakeup_seq;
+   cv_data.bc = cv->broadcast_seq;
+   cv_data.cv = cv;
 
    while (1) {
 
      lll_unlock(cv->lock);
 
-     enable_async
+     enable_async(&cv_data);
 
      ret = FUTEX_WAIT(cv->wakeup_seq, val, timeout);
 
@@ -63,6 +79,9 @@ cond_timedwait(cv, mutex, timeout):
 
      lll_lock(cv->lock);
 
+     if (bc != cv->broadcast_seq)
+       goto bc_out;
+
      val = cv->wakeup_seq;
 
      if (val != seq && cv->woken_seq != val) {
@@ -78,6 +97,7 @@ cond_timedwait(cv, mutex, timeout):
 
    ++cv->woken_seq;
 
+ bc_out:
    lll_unlock(cv->lock);
 
    cleanup_pop
@@ -105,6 +125,8 @@ cond_broadcast(cv)
 
    if (cv->total_seq > cv->wakeup_seq) {
      cv->wakeup_seq = cv->total_seq;
+     cv->woken_seq = cv->total_seq;
+     ++cv->broadcast_seq;
      FUTEX_WAKE(cv->wakeup_seq, ALL);
    }