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-sem.txt | 46 ------------------------------------------
 1 file changed, 46 deletions(-)
 delete mode 100644 libpthread/nptl/DESIGN-sem.txt

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

diff --git a/libpthread/nptl/DESIGN-sem.txt b/libpthread/nptl/DESIGN-sem.txt
deleted file mode 100644
index 17eb0c11c..000000000
--- a/libpthread/nptl/DESIGN-sem.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-Semaphores pseudocode
-==============================
-
-       int sem_wait(sem_t * sem);
-       int sem_trywait(sem_t * sem);
-       int sem_post(sem_t * sem);
-       int sem_getvalue(sem_t * sem, int * sval);
-
-struct sem_t {
-
-   unsigned int count;
-         - current semaphore count, also used as a futex
-}
-
-sem_wait(sem_t *sem)
-{
-  for (;;) {
-
-    if (atomic_decrement_if_positive(sem->count))
-      break;
-
-    futex_wait(&sem->count, 0)
-  }
-}
-
-sem_post(sem_t *sem)
-{
-  n = atomic_increment(sem->count);
-  // Pass the new value of sem->count
-  futex_wake(&sem->count, n + 1);
-}
-
-sem_trywait(sem_t *sem)
-{
-  if (atomic_decrement_if_positive(sem->count)) {
-    return 0;
-  } else {
-    return EAGAIN;
-  }
-}
-
-sem_getvalue(sem_t *sem, int *sval)
-{
-  *sval = sem->count;
-  read_barrier();
-}
-- 
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