about summary refs log tree commit diff
path: root/nptl
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2004-09-08 06:09:02 +0000
committerUlrich Drepper <drepper@redhat.com>2004-09-08 06:09:02 +0000
commit7ba0e52c39ae2a57933a856ce363ab0361ad1ed9 (patch)
treeaaabd4f3d63a9a27d7c8f4fb1105bcc3c5ef26a2 /nptl
parentf510d815bec80c004b194aaf4847fa40069cfd18 (diff)
downloadglibc-7ba0e52c39ae2a57933a856ce363ab0361ad1ed9.tar.gz
glibc-7ba0e52c39ae2a57933a856ce363ab0361ad1ed9.tar.xz
glibc-7ba0e52c39ae2a57933a856ce363ab0361ad1ed9.zip
Update.
	* sysdeps/powerpc/bits/atomic.h (atomic_increment): Define.
	(atomic_decrement): Define.

	* sysdeps/powerpc/bits/atomic.h: Implement atomic_increment_val and
	atomic_decrement_val.
	* sysdeps/powerpc/powerpc32/bits/atomic.h: Likewise.
	* sysdeps/powerpc/powerpc64/bits/atomic.h: Likewise.

	* csu/tst-atomic.c (do_test): Add tests of atomic_increment_val
	and atomic_decrement_val.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/allocatestack.c3
-rw-r--r--nptl/sysdeps/pthread/pthread_barrier_wait.c2
-rw-r--r--nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c7
-rw-r--r--nptl/sysdeps/unix/sysv/linux/sem_post.c7
4 files changed, 8 insertions, 11 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 33fbbaa850..59f00d9231 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -445,8 +445,7 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
 
 #if COLORING_INCREMENT != 0
 	  /* Atomically increment NCREATED.  */
-	  unsigned int ncreated = (atomic_exchange_and_add (&nptl_ncreated, 1)
-				   + 1);
+	  unsigned int ncreated = atomic_increment_val (&nptl_ncreated);
 
 	  /* We chose the offset for coloring by incrementing it for
 	     every new thread by a fixed amount.  The offset used
diff --git a/nptl/sysdeps/pthread/pthread_barrier_wait.c b/nptl/sysdeps/pthread/pthread_barrier_wait.c
index aa5b42d419..c6b563f242 100644
--- a/nptl/sysdeps/pthread/pthread_barrier_wait.c
+++ b/nptl/sysdeps/pthread/pthread_barrier_wait.c
@@ -69,7 +69,7 @@ pthread_barrier_wait (barrier)
   unsigned int init_count = ibarrier->init_count;
 
   /* If this was the last woken thread, unlock.  */
-  if (atomic_exchange_and_add (&ibarrier->left, 1) == init_count - 1)
+  if (atomic_increment_val (&ibarrier->left) == init_count)
     /* We are done.  */
     lll_unlock (ibarrier->lock);
 
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c b/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c
index d9ee5d50b7..91b9955181 100644
--- a/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c
+++ b/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c
@@ -1,5 +1,5 @@
 /* sem_post -- post to a POSIX semaphore.  Powerpc version.
-   Copyright (C) 2003 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
 
@@ -30,11 +30,10 @@ int
 __new_sem_post (sem_t *sem)
 {
   int *futex = (int *) sem;
-  int err, nr;
 
   __asm __volatile (__lll_rel_instr ::: "memory");
-  nr = atomic_exchange_and_add (futex, 1);
-  err = lll_futex_wake (futex, nr + 1);
+  int nr = atomic_increment_val (futex);
+  int err = lll_futex_wake (futex, nr);
   if (__builtin_expect (err, 0) < 0)
     {
       __set_errno (-err);
diff --git a/nptl/sysdeps/unix/sysv/linux/sem_post.c b/nptl/sysdeps/unix/sysv/linux/sem_post.c
index b4ee4cfc8a..671b43f7f7 100644
--- a/nptl/sysdeps/unix/sysv/linux/sem_post.c
+++ b/nptl/sysdeps/unix/sysv/linux/sem_post.c
@@ -1,5 +1,5 @@
 /* sem_post -- post to a POSIX semaphore.  Generic futex-using version.
-   Copyright (C) 2003 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -30,10 +30,9 @@ int
 __new_sem_post (sem_t *sem)
 {
   int *futex = (int *) sem;
-  int err, nr;
 
-  nr = atomic_exchange_and_add (futex, 1);
-  err = lll_futex_wake (futex, nr + 1);
+  int nr = atomic_increment_val (futex);
+  int err = lll_futex_wake (futex, nr);
   if (__builtin_expect (err, 0) < 0)
     {
       __set_errno (-err);