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Add FUTEX_*_REQUEUE_PI support for ARM.

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Joseph Myers 2013-02-18 23:49:05 +00:00
parent 4be9b544ea
commit 6c89344ec2
2 changed files with 38 additions and 0 deletions
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10
ports/ChangeLog.arm
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@ -1,3 +1,13 @@
2013-02-18 Joseph Myers <joseph@codesourcery.com>
[BZ #14920]
* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
(FUTEX_WAIT_REQUEUE_PI): Define.
(FUTEX_CMP_REQUEUE_PI): Likewise.
(lll_futex_wait_requeue_pi): Likewise.
(lll_futex_timed_wait_requeue_pi): Likewise.
(lll_futex_cmp_requeue_pi): Likewise.
2013-02-18 Siddhesh Poyarekar <siddhesh@redhat.com>
* sysdeps/unix/sysv/linux/arm/nptl/libc.abilist: Add

28
ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
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@ -36,6 +36,8 @@
#define FUTEX_TRYLOCK_PI 8
#define FUTEX_WAIT_BITSET 9
#define FUTEX_WAKE_BITSET 10
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
#define FUTEX_PRIVATE_FLAG 128
#define FUTEX_CLOCK_REALTIME 256
@ -141,6 +143,32 @@
INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
})
/* Priority Inheritance support. */
#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \
lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private)
#define lll_futex_timed_wait_requeue_pi(futexp, val, timespec, clockbit, \
mutex, private) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
int __op = FUTEX_WAIT_REQUEUE_PI | clockbit; \
\
INTERNAL_SYSCALL (futex, __err, 5, (futexp), \
__lll_private_flag (__op, private), \
(val), (timespec), mutex); \
})
#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
\
__ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
__lll_private_flag (FUTEX_CMP_REQUEUE_PI, priv),\
(nr_wake), (nr_move), (mutex), (val)); \
INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
})
#define lll_trylock(lock) \
atomic_compare_and_exchange_val_acq(&(lock), 1, 0)