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* sysdeps/arm/nptl/tls.h (THREAD_GSCOPE_RESET_FLAG): Use

Browse Source 
lll_futex_wake not lll_private_futex_wake.
	* sysdeps/unix/sysv/linux/arm/bits/fcntl.h (O_CLOEXEC): Define.
	* sysdeps/unix/sysv/linux/arm/eabi/sysdep.h: Include <tls.h>
	* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c
	(__lll_lock_wait_private, __lll_lock_wait): New.
	(__lll_timedlock_wait): Don't include in libc.so;  Take private
	argument.  Use atomic_compare_and_exchange_bool_acq.
	* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h: Renamed all
	lll_mutex_* resp. lll_robust_mutex_* macros to lll_*
	resp. lll_robust_*.  Renamed all LLL_MUTEX_LOCK_* macros to
	LLL_LOCK_*.  Include <kernel-features.h>.
	(LLL_LOCK_INITIALIZER): Remove duplicate definition.
	(__lll_private_flag): Define.
	(lll_futex_timed_wait): Pass private flag to syscall.
	(lll_futex_wake): Likewise.
	(lll_private_futex_wait, lll_private_futex_timed_wait,
	lll_private_futex_wake): Remove.
	(lll_robust_dead, lll_futex_requeue): Take private arguments.
	(lll_futex_wake_unlock): Pass private flag to syscall.
	(__lll_robust_trylock): Convert to macro.
	(__lll_robust_lock_wait): Add private argument.
	(__lll_lock_wait_private, __lll_lock_wait): Declare.
	(__lll_lock): Convert to macro.  Take private argument.
	(__lll_cond_lock): Likewise.
	(lll_lock, lll_cond_lock): Take private arguments.
	(__lll_robust_lock): Take private argument.
	(__lll_timedlock_wait, __lll_robust_timedlock_wait): Take private
	arguments.
	(__lll_timedlock, __lll_robust_timedlock): Convert to macros.
	Take private arguments.
	(lll_timedlock, lll_robust_timedlock): Take private arguments.
	(__lll_unlock, __lll_robust_unlock): Convert to macros.  Take
	private arguments.
	(lll_unlock, lll_robust_unlock): Take private arguments.
	(__lll_mutex_unlock_force, lll_mutex_unlock_force, lll_lock_t,
	lll_trylock, lll_lock, lll_unlock, lll_islocked): Remove.
	(lll_wait_tid): Pass LLL_SHARED to lll_futex_wait.
	(__lll_cond_wait, __lll_cond_timedwait, __lll_cond_wake,
	__lll_cond_broadcast, lll_cond_wait, lll_cond_timedwait,
	lll_cond_wake, lll_cond_broadcast): Remove.
	* sysdeps/unix/sysv/linux/arm/nptl/pthread_once.c
	(clear_once_control, __pthread_once): Use lll_futex_wake not
	lll_private_futex_wake.
This commit is contained in:
Daniel Jacobowitz 2007-09-12 12:57:25 +00:00
parent ce7a1add4e
commit 713ddf8d12
7 changed files with 220 additions and 204 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
ChangeLog.arm
View File

@ -1,3 +1,50 @@
2007-09-12 Joseph Myers <joseph@codesourcery.com>
* sysdeps/arm/nptl/tls.h (THREAD_GSCOPE_RESET_FLAG): Use
lll_futex_wake not lll_private_futex_wake.
* sysdeps/unix/sysv/linux/arm/bits/fcntl.h (O_CLOEXEC): Define.
* sysdeps/unix/sysv/linux/arm/eabi/sysdep.h: Include <tls.h>
* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c
(__lll_lock_wait_private, __lll_lock_wait): New.
(__lll_timedlock_wait): Don't include in libc.so; Take private
argument. Use atomic_compare_and_exchange_bool_acq.
* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h: Renamed all
lll_mutex_* resp. lll_robust_mutex_* macros to lll_*
resp. lll_robust_*. Renamed all LLL_MUTEX_LOCK_* macros to
LLL_LOCK_*. Include <kernel-features.h>.
(LLL_LOCK_INITIALIZER): Remove duplicate definition.
(__lll_private_flag): Define.
(lll_futex_timed_wait): Pass private flag to syscall.
(lll_futex_wake): Likewise.
(lll_private_futex_wait, lll_private_futex_timed_wait,
lll_private_futex_wake): Remove.
(lll_robust_dead, lll_futex_requeue): Take private arguments.
(lll_futex_wake_unlock): Pass private flag to syscall.
(__lll_robust_trylock): Convert to macro.
(__lll_robust_lock_wait): Add private argument.
(__lll_lock_wait_private, __lll_lock_wait): Declare.
(__lll_lock): Convert to macro. Take private argument.
(__lll_cond_lock): Likewise.
(lll_lock, lll_cond_lock): Take private arguments.
(__lll_robust_lock): Take private argument.
(__lll_timedlock_wait, __lll_robust_timedlock_wait): Take private
arguments.
(__lll_timedlock, __lll_robust_timedlock): Convert to macros.
Take private arguments.
(lll_timedlock, lll_robust_timedlock): Take private arguments.
(__lll_unlock, __lll_robust_unlock): Convert to macros. Take
private arguments.
(lll_unlock, lll_robust_unlock): Take private arguments.
(__lll_mutex_unlock_force, lll_mutex_unlock_force, lll_lock_t,
lll_trylock, lll_lock, lll_unlock, lll_islocked): Remove.
(lll_wait_tid): Pass LLL_SHARED to lll_futex_wait.
(__lll_cond_wait, __lll_cond_timedwait, __lll_cond_wake,
__lll_cond_broadcast, lll_cond_wait, lll_cond_timedwait,
lll_cond_wake, lll_cond_broadcast): Remove.
* sysdeps/unix/sysv/linux/arm/nptl/pthread_once.c
(clear_once_control, __pthread_once): Use lll_futex_wake not
lll_private_futex_wake.
2007-07-10 Daniel Jacobowitz <dan@codesourcery.com>
* sysdeps/arm/nptl/tls.h (THREAD_GSCOPE_RESET_FLAG): Use

2
sysdeps/arm/nptl/tls.h
View File

@ -142,7 +142,7 @@ typedef struct
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_private_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \

4
sysdeps/unix/sysv/linux/arm/bits/fcntl.h
View File

@ -1,5 +1,6 @@
/* O_*, F_*, FD_* bit values for Linux.
Copyright (C) 1995-1998, 2000, 2004, 2006 Free Software Foundation, Inc.
Copyright (C) 1995-1998, 2000, 2004, 2006, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -49,6 +50,7 @@
# define O_NOFOLLOW 0100000 /* Do not follow links. */
# define O_DIRECT 0200000 /* Direct disk access. */
# define O_NOATIME 01000000 /* Do not set atime. */
# define O_CLOEXEC 02000000 /* Set close_on_exec. */
#endif
/* For now Linux has synchronisity options for data and read operations.

4
sysdeps/unix/sysv/linux/arm/eabi/sysdep.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2005, 2006
/* Copyright (C) 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -25,6 +25,8 @@
#include <arm/sysdep.h>
#include <tls.h>
#if __NR_SYSCALL_BASE != 0
# error Kernel headers are too old
#endif

36
sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c
View File

@ -22,8 +22,36 @@
#include <lowlevellock.h>
#include <sys/time.h>
void
__lll_lock_wait_private (int *futex)
{
do
{
int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
if (oldval != 0)
lll_futex_wait (futex, 2, LLL_PRIVATE);
}
while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
}
/* These functions don't get included in libc.so */
#ifdef IS_IN_libpthread
void
__lll_lock_wait (int *futex, int private)
{
do
{
int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
if (oldval != 0)
lll_futex_wait (futex, 2, private);
}
while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
}
int
__lll_timedlock_wait (int *futex, const struct timespec *abstime)
__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private)
{
struct timespec rt;
@ -56,16 +84,14 @@ __lll_timedlock_wait (int *futex, const struct timespec *abstime)
return ETIMEDOUT;
// XYZ: Lost the lock to check whether it was private.
lll_futex_timed_wait (futex, 2, &rt, LLL_SHARED);
lll_futex_timed_wait (futex, 2, &rt, private);
}
while (atomic_exchange_acq (futex, 2) != 0);
while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
return 0;
}
/* This function doesn't get included in libc.so */
#ifdef IS_IN_libpthread
int
__lll_timedwait_tid (int *tidp, const struct timespec *abstime)
{

325
sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
View File

@ -24,6 +24,7 @@
#include <bits/pthreadtypes.h>
#include <atomic.h>
#include <sysdep.h>
#include <kernel-features.h>
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
@ -42,8 +43,31 @@
#define LLL_PRIVATE 0
#define LLL_SHARED FUTEX_PRIVATE_FLAG
/* Initializer for compatibility lock. */
#define LLL_MUTEX_LOCK_INITIALIZER (0)
#if !defined NOT_IN_libc || defined IS_IN_rtld
/* In libc.so or ld.so all futexes are private. */
# ifdef __ASSUME_PRIVATE_FUTEX
# define __lll_private_flag(fl, private) \
((fl) | FUTEX_PRIVATE_FLAG)
# else
# define __lll_private_flag(fl, private) \
((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
# endif
#else
# ifdef __ASSUME_PRIVATE_FUTEX
# define __lll_private_flag(fl, private) \
(((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
# else
# define __lll_private_flag(fl, private) \
(__builtin_constant_p (private) \
? ((private) == 0 \
? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \
: (fl)) \
: ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \
& THREAD_GETMEM (THREAD_SELF, header.private_futex))))
# endif
#endif
#define lll_futex_wait(futexp, val, private) \
lll_futex_timed_wait(futexp, val, NULL, private)
@ -52,8 +76,9 @@
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), FUTEX_WAIT, (val), (timespec)); \
__ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
__lll_private_flag (FUTEX_WAIT, private), \
(val), (timespec)); \
__ret; \
})
@ -61,73 +86,29 @@
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), FUTEX_WAKE, (nr), 0); \
__ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
__lll_private_flag (FUTEX_WAKE, private), \
(nr), 0); \
__ret; \
})
#define lll_private_futex_wait(futexp, val) \
lll_private_futex_timed_wait(futexp, val, NULL)
#ifdef __ASSUME_PRIVATE_FUTEX
#define lll_private_futex_timed_wait(futexp, val, timespec) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), FUTEX_WAIT | FUTEX_PRIVATE_FLAG, \
(val), (timespec)); \
__ret; \
})
#define lll_private_futex_wake(futexp, nr) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), FUTEX_WAKE | FUTEX_PRIVATE_FLAG, \
(nr), (0)); \
__ret; \
})
#else
#define lll_private_futex_timed_wait(futexp, val, timespec) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret, __op; \
__op = FUTEX_WAIT | THREAD_GETMEM (THREAD_SELF, header.private_futex); \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), __op, (val), (timespec)); \
__ret; \
})
#define lll_private_futex_wake(futexp, nr) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret, __op; \
__op = FUTEX_WAKE | THREAD_GETMEM (THREAD_SELF, header.private_futex); \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
(futexp), __op, (nr), 0); \
__ret; \
})
#endif
#define lll_robust_mutex_dead(futexv) \
#define lll_robust_dead(futexv, private) \
do \
{ \
int *__futexp = &(futexv); \
atomic_or (__futexp, FUTEX_OWNER_DIED); \
lll_futex_wake (__futexp, 1, 0); \
lll_futex_wake (__futexp, 1, private); \
} \
while (0)
/* Returns non-zero if error happened, zero if success. */
#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val) \
#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 6, \
(futexp), FUTEX_CMP_REQUEUE, (nr_wake), \
(nr_move), (mutex), (val)); \
__ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
__lll_private_flag (FUTEX_CMP_REQUEUE, private),\
(nr_wake), (nr_move), (mutex), (val)); \
__ret; \
})
@ -137,16 +118,16 @@
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 6, \
(futexp), FUTEX_WAKE_OP, (nr_wake), \
(nr_wake2), (futexp2), \
__ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
__lll_private_flag (FUTEX_WAKE_OP, private), \
(nr_wake), (nr_wake2), (futexp2), \
FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \
__ret; \
})
static inline int __attribute__((always_inline))
__lll_mutex_trylock (int *futex)
__lll_trylock (int *futex)
{
int flag = 1, old;
asm volatile (
@ -161,11 +142,11 @@ __lll_mutex_trylock (int *futex)
return flag;
}
#define lll_mutex_trylock(lock) __lll_mutex_trylock (&(lock))
#define lll_trylock(lock) __lll_trylock (&(lock))
static inline int __attribute__((always_inline))
__lll_mutex_cond_trylock (int *futex)
__lll_cond_trylock (int *futex)
{
int flag = 2, old;
asm volatile (
@ -180,135 +161,120 @@ __lll_mutex_cond_trylock (int *futex)
return flag;
}
#define lll_mutex_cond_trylock(lock) __lll_mutex_cond_trylock (&(lock))
#define lll_cond_trylock(lock) __lll_cond_trylock (&(lock))
static inline int __attribute__((always_inline))
__lll_robust_mutex_trylock(int *futex, int id)
{
return atomic_compare_and_exchange_val_acq (futex, id, 0) != 0;
}
#define lll_robust_mutex_trylock(lock, id) \
__lll_robust_mutex_trylock (&(lock), id)
#define __lll_robust_trylock(futex, id) \
(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
#define lll_robust_trylock(lock, id) \
__lll_robust_trylock (&(lock), id)
extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
extern void __lll_lock_wait_private (int *futex) attribute_hidden;
extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
static inline void __attribute__((always_inline))
__lll_mutex_lock (int *futex)
{
int val = atomic_exchange_acq (futex, 1);
if (__builtin_expect (val != 0, 0))
{
while (atomic_exchange_acq (futex, 2) != 0)
lll_futex_wait (futex, 2, 0);
}
}
#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
#define __lll_lock(futex, private) \
((void) ({ \
int *__futex = (futex); \
if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, \
1, 0), 0)) \
{ \
if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \
__lll_lock_wait_private (__futex); \
else \
__lll_lock_wait (__futex, private); \
} \
}))
#define lll_lock(futex, private) __lll_lock (&(futex), private)
static inline int __attribute__ ((always_inline))
__lll_robust_mutex_lock (int *futex, int id)
{
int result = 0;
if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
result = __lll_robust_lock_wait (futex);
return result;
}
#define lll_robust_mutex_lock(futex, id) \
__lll_robust_mutex_lock (&(futex), id)
#define __lll_robust_lock(futex, id, private) \
({ \
int *__futex = (futex); \
int __val = 0; \
\
if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
0), 0)) \
__val = __lll_robust_lock_wait (__futex, private); \
__val; \
})
#define lll_robust_lock(futex, id, private) \
__lll_robust_lock (&(futex), id, private)
static inline void __attribute__ ((always_inline))
__lll_mutex_cond_lock (int *futex)
{
int val = atomic_exchange_acq (futex, 2);
if (__builtin_expect (val != 0, 0))
{
while (atomic_exchange_acq (futex, 2) != 0)
lll_futex_wait (futex, 2, 0);
}
}
#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
#define __lll_cond_lock(futex, private) \
((void) ({ \
int *__futex = (futex); \
if (__builtin_expect (atomic_exchange_acq (__futex, 2), 0)) \
__lll_lock_wait (__futex, private); \
}))
#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
#define lll_robust_mutex_cond_lock(futex, id) \
__lll_robust_mutex_lock (&(futex), (id) | FUTEX_WAITERS)
#define lll_robust_cond_lock(futex, id, private) \
__lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private)
extern int __lll_timedlock_wait (int *futex, const struct timespec *)
attribute_hidden;
extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *)
attribute_hidden;
extern int __lll_timedlock_wait (int *futex, const struct timespec *,
int private) attribute_hidden;
extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *,
int private) attribute_hidden;
static inline int __attribute__ ((always_inline))
__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
{
int result = 0;
int val = atomic_exchange_acq (futex, 1);
if (__builtin_expect (val != 0, 0))
result = __lll_timedlock_wait (futex, abstime);
return result;
}
#define lll_mutex_timedlock(futex, abstime) \
__lll_mutex_timedlock (&(futex), abstime)
#define __lll_timedlock(futex, abstime, private) \
({ \
int *__futex = (futex); \
int __val = 0; \
\
if (__builtin_expect (atomic_exchange_acq (__futex, 1), 0)) \
__val = __lll_timedlock_wait (__futex, abstime, private); \
__val; \
})
#define lll_timedlock(futex, abstime, private) \
__lll_timedlock (&(futex), abstime, private)
static inline int __attribute__ ((always_inline))
__lll_robust_mutex_timedlock (int *futex, const struct timespec *abstime,
int id)
{
int result = 0;
if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
result = __lll_robust_timedlock_wait (futex, abstime);
return result;
}
#define lll_robust_mutex_timedlock(futex, abstime, id) \
__lll_robust_mutex_timedlock (&(futex), abstime, id)
#define __lll_robust_timedlock(futex, abstime, id, private) \
({ \
int *__futex = (futex); \
int __val = 0; \
\
if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
0), 0)) \
__val = __lll_robust_timedlock_wait (__futex, abstime, private); \
__val; \
})
#define lll_robust_timedlock(futex, abstime, id, private) \
__lll_robust_timedlock (&(futex), abstime, id, private)
static inline void __attribute__ ((always_inline))
__lll_mutex_unlock (int *futex)
{
int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val > 1, 0))
lll_futex_wake (futex, 1, 0);
}
#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex))
#define __lll_unlock(futex, private) \
(void) \
({ int *__futex = (futex); \
int __oldval = atomic_exchange_rel (__futex, 0); \
if (__builtin_expect (__oldval > 1, 0)) \
lll_futex_wake (__futex, 1, private); \
})
#define lll_unlock(futex, private) __lll_unlock(&(futex), private)
static inline void __attribute__ ((always_inline))
__lll_robust_mutex_unlock (int *futex, int mask)
{
int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val & mask, 0))
lll_futex_wake (futex, 1, 0);
}
#define lll_robust_mutex_unlock(futex) \
__lll_robust_mutex_unlock(&(futex), FUTEX_WAITERS)
#define __lll_robust_unlock(futex, private) \
(void) \
({ int *__futex = (futex); \
int __oldval = atomic_exchange_rel (__futex, 0); \
if (__builtin_expect (__oldval & FUTEX_WAITERS, 0)) \
lll_futex_wake (__futex, 1, private); \
})
#define lll_robust_unlock(futex, private) \
__lll_robust_unlock(&(futex), private)
static inline void __attribute__ ((always_inline))
__lll_mutex_unlock_force (int *futex)
{
(void) atomic_exchange_rel (futex, 0);
lll_futex_wake (futex, 1, 0);
}
#define lll_mutex_unlock_force(futex) __lll_mutex_unlock_force(&(futex))
#define lll_mutex_islocked(futex) \
#define lll_islocked(futex) \
(futex != 0)
/* Our internal lock implementation is identical to the binary-compatible
mutex implementation. */
/* Type for lock object. */
typedef int lll_lock_t;
/* Initializers for lock. */
#define LLL_LOCK_INITIALIZER (0)
#define LLL_LOCK_INITIALIZER_LOCKED (1)
@ -318,11 +284,6 @@ typedef int lll_lock_t;
1 - taken by one user
>1 - taken by more users */
#define lll_trylock(lock) lll_mutex_trylock (lock)
#define lll_lock(lock) lll_mutex_lock (lock)
#define lll_unlock(lock) lll_mutex_unlock (lock)
#define lll_islocked(lock) lll_mutex_islocked (lock)
/* The kernel notifies a process which uses CLONE_CLEARTID via futex
wakeup when the clone terminates. The memory location contains the
thread ID while the clone is running and is reset to zero
@ -331,7 +292,7 @@ typedef int lll_lock_t;
do { \
__typeof (tid) __tid; \
while ((__tid = (tid)) != 0) \
lll_futex_wait (&(tid), __tid, 0);\
lll_futex_wait (&(tid), __tid, LLL_SHARED);\
} while (0)
extern int __lll_timedwait_tid (int *, const struct timespec *)
@ -345,26 +306,4 @@ extern int __lll_timedwait_tid (int *, const struct timespec *)
__res; \
})
/* Conditional variable handling. */
extern void __lll_cond_wait (pthread_cond_t *cond)
attribute_hidden;
extern int __lll_cond_timedwait (pthread_cond_t *cond,
const struct timespec *abstime)
attribute_hidden;
extern void __lll_cond_wake (pthread_cond_t *cond)
attribute_hidden;
extern void __lll_cond_broadcast (pthread_cond_t *cond)
attribute_hidden;
#define lll_cond_wait(cond) \
__lll_cond_wait (cond)
#define lll_cond_timedwait(cond, abstime) \
__lll_cond_timedwait (cond, abstime)
#define lll_cond_wake(cond) \
__lll_cond_wake (cond)
#define lll_cond_broadcast(cond) \
__lll_cond_broadcast (cond)
#endif /* lowlevellock.h */

6
sysdeps/unix/sysv/linux/arm/nptl/pthread_once.c
View File

@ -27,7 +27,7 @@ clear_once_control (void *arg)
pthread_once_t *once_control = (pthread_once_t *) arg;
*once_control = 0;
lll_private_futex_wake (once_control, INT_MAX);
lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
}
int
@ -66,7 +66,7 @@ __pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
break;
/* Same generation, some other thread was faster. Wait. */
lll_private_futex_wait (once_control, oldval);
lll_futex_wait (once_control, oldval, LLL_PRIVATE);
}
/* This thread is the first here. Do the initialization.
@ -82,7 +82,7 @@ __pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
*once_control = __fork_generation | 2;
/* Wake up all other threads. */
lll_private_futex_wake (once_control, INT_MAX);
lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
return 0;
}