From 124af9f4b2b77b1510d88cfc8092c788d7e513c7 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Fri, 20 May 2005 19:02:51 +0000
Subject: Back out nptl changes, which for now will be done in
 branches/uClibc-nptl

---
 libpthread/nptl/DESIGN-condvar.txt | 134 -------------------------------------
 1 file changed, 134 deletions(-)
 delete mode 100644 libpthread/nptl/DESIGN-condvar.txt

(limited to 'libpthread/nptl/DESIGN-condvar.txt')

diff --git a/libpthread/nptl/DESIGN-condvar.txt b/libpthread/nptl/DESIGN-condvar.txt
deleted file mode 100644
index 4845251c7..000000000
--- a/libpthread/nptl/DESIGN-condvar.txt
+++ /dev/null
@@ -1,134 +0,0 @@
-Conditional Variable pseudocode.
-================================
-
-       int pthread_cond_timedwait (pthread_cond_t *cv, pthread_mutex_t *mutex);
-       int pthread_cond_signal    (pthread_cond_t *cv);
-       int pthread_cond_broadcast (pthread_cond_t *cv);
-
-struct pthread_cond_t {
-
-   unsigned int cond_lock;
-
-         internal mutex
-
-   uint64_t total_seq;
-
-     Total number of threads using the conditional variable.
-
-   uint64_t wakeup_seq;
-
-     sequence number for next wakeup.
-
-   uint64_t woken_seq;
-
-     sequence number of last woken thread.
-
-   uint32_t broadcast_seq;
-
-}
-
-
-struct cv_data {
-
-   pthread_cond_t *cv;
-
-   uint32_t bc_seq
-
-}
-
-
-
-cleanup_handler(cv_data)
-{
-  cv = cv_data->cv;
-  lll_lock(cv->lock);
-
-  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);
-
-  lll_unlock(cv->lock);
-}
-
-
-cond_timedwait(cv, mutex, timeout):
-{
-   lll_lock(cv->lock);
-   mutex_unlock(mutex);
-
-   cleanup_push
-
-   ++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(&cv_data);
-
-     ret = FUTEX_WAIT(cv->wakeup_seq, val, timeout);
-
-     restore_async
-
-     lll_lock(cv->lock);
-
-     if (bc != cv->broadcast_seq)
-       goto bc_out;
-
-     val = cv->wakeup_seq;
-
-     if (val != seq && cv->woken_seq != val) {
-       ret = 0;
-       break;
-     }
-
-     if (ret == TIMEDOUT) {
-       ++cv->wakeup_seq;
-       break;
-     }
-   }
-
-   ++cv->woken_seq;
-
- bc_out:
-   lll_unlock(cv->lock);
-
-   cleanup_pop
-
-   mutex_lock(mutex);
-
-   return ret;
-}
-
-cond_signal(cv)
-{
-   lll_lock(cv->lock);
-
-   if (cv->total_seq > cv->wakeup_seq) {
-     ++cv->wakeup_seq;
-     FUTEX_WAKE(cv->wakeup_seq, 1);
-   }
-
-   lll_unlock(cv->lock);
-}
-
-cond_broadcast(cv)
-{
-   lll_lock(cv->lock);
-
-   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);
-   }
-
-   lll_unlock(cv->lock);
-}
-- 
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