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authorUlrich Drepper <drepper@redhat.com>2009-11-18 06:40:25 -0800
committerUlrich Drepper <drepper@redhat.com>2009-11-18 06:40:25 -0800
commitdfedb126d66fa4e9962e80d89233e00b521bf8bb (patch)
treeff47ca9eb1aee1c368306eddff1c5cdc79ab0197 /nptl
parentdd7106b3c68328f7d4b3794e989e86cb0b0d6461 (diff)
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Minor optimizations and cleanups of x86 cond_broadcast.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog5
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S19
-rw-r--r--nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S2
3 files changed, 15 insertions, 11 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 1991a4d5d5..a6acf8aafb 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,8 @@
+2009-11-18 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Minor
+ optimizations and cleanups.
+
2009-11-18 Dinakar Guniguntala <dino@in.ibm.com>
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S:
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
index 1a55e522d3..40fb04b31b 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002,2003,2004,2006,2007,2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -138,13 +138,6 @@ __pthread_cond_broadcast:
cfi_restore_state
- .align 16
- /* Unlock. */
-4: LOCK
- subl $1, cond_lock-cond_futex(%ebx)
- jne 5f
- jmp 6b
-
/* Initial locking failed. */
1:
#if cond_lock == 0
@@ -165,7 +158,13 @@ __pthread_cond_broadcast:
call __lll_lock_wait
jmp 2b
- /* Unlock in loop requires waekup. */
+ .align 16
+ /* Unlock. */
+4: LOCK
+ subl $1, cond_lock-cond_futex(%ebx)
+ je 6b
+
+ /* Unlock in loop requires wakeup. */
5: leal cond_lock-cond_futex(%ebx), %eax
#if (LLL_SHARED-LLL_PRIVATE) > 255
xorl %ecx, %ecx
@@ -180,7 +179,7 @@ __pthread_cond_broadcast:
call __lll_unlock_wake
jmp 6b
- /* Unlock in loop requires waekup. */
+ /* Unlock in loop requires wakeup. */
7: leal cond_lock-cond_futex(%ebx), %eax
#if (LLL_SHARED-LLL_PRIVATE) > 255
xorl %ecx, %ecx
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
index ad42fb7c75..013fcc303f 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002,2003,2004,2005,2007,2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.