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* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Checking

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whether there are more than one thread makes no sense here since
	we only call the slow path if the locks are taken.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.
This commit is contained in:
Ulrich Drepper
2007-05-30 04:08:13 +00:00
parent 4b5e7304ed
commit 0154658d3d
4 changed files with 6 additions and 21 deletions
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5
nptl/ChangeLog
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@@ -1,5 +1,10 @@
2007-05-29 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Checking
whether there are more than one thread makes no sense here since
we only call the slow path if the locks are taken.
* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.
* sysdeps/unix/sysv/linux/internaltypes.h: Introduce
COND_NWAITERS_SHIFT.
* pthread_cond_destroy.c: Use COND_NWAITERS_SHIFT instead of

10
nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S
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@@ -19,16 +19,6 @@
#include <kernel-features.h>
/* In libc.so we do not unconditionally use the lock prefix. Only if
the application is using threads. */
#ifndef UP
# define LOCK \
cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \
je 0f; \
lock; \
0:
#endif
/* All locks in libc are private. Use the kernel feature if possible. */
#define FUTEX_PRIVATE_FLAG 128
#ifdef __ASSUME_PRIVATE_FUTEX

2
nptl/sysdeps/unix/sysv/linux/internaltypes.h
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@@ -80,7 +80,7 @@ struct pthread_condattr
of bits needed to represent the ID of the clock. COND_NWAITERS_SHIFT
is the number of bits reserved for other purposes like the clock. */
#define COND_CLOCK_BITS 1
#define COND_NWAITERS_SHIFT 8
#define COND_NWAITERS_SHIFT 1
/* Read-write lock variable attribute data structure. */

10
nptl/sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S
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@@ -19,16 +19,6 @@
#include <kernel-features.h>
/* In libc.so we do not unconditionally use the lock prefix. Only if
the application is using threads. */
#ifndef UP
# define LOCK \
cmpl $0, __libc_multiple_threads(%rip); \
je 0f; \
lock; \
0:
#endif
/* All locks in libc are private. Use the kernel feature if possible. */
#define FUTEX_PRIVATE_FLAG 128
#ifdef __ASSUME_PRIVATE_FUTEX