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* include/atomic.h (atomic_and, atomic_or): Define.
nptl/ * sysdeps/unix/sysv/linux/alpha/lowlevellock.h (lll_robust_mutex_dead, lll_robust_mutex_trylock, lll_robust_mutex_lock, lll_robust_mutex_cond_lock, lll_robust_mutex_timedlock, lll_robust_mutex_unlock): New macros. (__lll_robust_lock_wait, __lll_robust_timedlock_wait): New prototypes. * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/lowlevelrobustlock.c: New file.
This commit is contained in:
Jakub Jelinek
parent
9c09cd9359
commit
378b1353df
@ -1,3 +1,7 @@
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2006-02-17 Jakub Jelinek <jakub@redhat.com>
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* include/atomic.h (atomic_and, atomic_or): Define.
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2006-02-15 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/sparc/bits/mman.h: Define MADV_DONTFORK
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@ -1,5 +1,5 @@
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/* Internal macros for atomic operations for GNU C Library.
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Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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@ -273,6 +273,41 @@
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__oldval & __mask; })
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#endif
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/* Atomically *mem &= mask and return the old value of *mem. */
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#ifndef atomic_and
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# define atomic_and(mem, mask) \
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({ __typeof (*(mem)) __oldval; \
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__typeof (mem) __memp = (mem); \
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__typeof (*(mem)) __mask = (mask); \
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\
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do \
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__oldval = (*__memp); \
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while (__builtin_expect (atomic_compare_and_exchange_bool_acq (__memp, \
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__oldval \
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& __mask, \
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__oldval),\
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0)); \
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\
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__oldval; })
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#endif
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/* Atomically *mem |= mask and return the old value of *mem. */
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#ifndef atomic_or
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# define atomic_or(mem, mask) \
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({ __typeof (*(mem)) __oldval; \
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__typeof (mem) __memp = (mem); \
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__typeof (*(mem)) __mask = (mask); \
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\
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do \
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__oldval = (*__memp); \
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while (__builtin_expect (atomic_compare_and_exchange_bool_acq (__memp, \
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__oldval \
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| __mask, \
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__oldval),\
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0)); \
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\
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__oldval; })
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#endif
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#ifndef atomic_full_barrier
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# define atomic_full_barrier() __asm ("" ::: "memory")
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@ -1,3 +1,15 @@
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2006-02-17 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/unix/sysv/linux/alpha/lowlevellock.h (lll_robust_mutex_dead,
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lll_robust_mutex_trylock, lll_robust_mutex_lock,
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lll_robust_mutex_cond_lock, lll_robust_mutex_timedlock,
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lll_robust_mutex_unlock): New macros.
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(__lll_robust_lock_wait, __lll_robust_timedlock_wait): New prototypes.
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* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/lowlevelrobustlock.c: New file.
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2006-02-17 Kaz Kojima <kkojima@rr.iij4u.or.jp>
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* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Add lll_robust_mutex_*
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@ -1,4 +1,4 @@
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/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -64,6 +64,15 @@
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INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __ret; \
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})
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#define lll_robust_mutex_dead(futexv) \
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do \
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{ \
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int *__futexp = &(futexv); \
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atomic_or (__futexp, FUTEX_OWNER_DIED); \
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lll_futex_wake (__futexp, 1); \
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} \
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while (0)
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/* Returns non-zero if error happened, zero if success. */
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#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val) \
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({ \
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@ -106,7 +115,16 @@ __lll_mutex_cond_trylock(int *futex)
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#define lll_mutex_cond_trylock(lock) __lll_mutex_cond_trylock (&(lock))
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static inline int __attribute__((always_inline))
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__lll_robust_mutex_trylock(int *futex, int id)
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{
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return atomic_compare_and_exchange_val_acq (futex, id, 0) != 0;
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}
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#define lll_robust_mutex_trylock(lock, id) \
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__lll_robust_mutex_trylock (&(lock), id)
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extern void __lll_lock_wait (int *futex) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
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static inline void __attribute__((always_inline))
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__lll_mutex_lock(int *futex)
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@ -117,6 +135,18 @@ __lll_mutex_lock(int *futex)
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#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
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static inline int __attribute__ ((always_inline))
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__lll_robust_mutex_lock (int *futex, int id)
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{
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int result = 0;
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if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
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result = __lll_robust_lock_wait (futex);
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return result;
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}
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#define lll_robust_mutex_lock(futex, id) \
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__lll_robust_mutex_lock (&(futex), id)
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static inline void __attribute__ ((always_inline))
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__lll_mutex_cond_lock (int *futex)
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{
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@ -126,8 +156,14 @@ __lll_mutex_cond_lock (int *futex)
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#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
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#define lll_robust_mutex_cond_lock(futex, id) \
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__lll_robust_mutex_lock (&(futex), (id) | FUTEX_WAITERS)
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extern int __lll_timedlock_wait (int *futex, const struct timespec *)
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attribute_hidden;
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extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *)
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attribute_hidden;
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static inline int __attribute__ ((always_inline))
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__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
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@ -141,6 +177,19 @@ __lll_mutex_timedlock (int *futex, const struct timespec *abstime)
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__lll_mutex_timedlock (&(futex), abstime)
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static inline int __attribute__ ((always_inline))
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__lll_robust_mutex_timedlock (int *futex, const struct timespec *abstime,
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int id)
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{
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int result = 0;
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if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
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result = __lll_robust_timedlock_wait (futex, abstime);
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return result;
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}
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#define lll_robust_mutex_timedlock(futex, abstime, id) \
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__lll_robust_mutex_timedlock (&(futex), abstime, id)
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static inline void __attribute__ ((always_inline))
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__lll_mutex_unlock (int *futex)
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{
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@ -151,6 +200,16 @@ __lll_mutex_unlock (int *futex)
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#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex))
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static inline void __attribute__ ((always_inline))
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__lll_robust_mutex_unlock (int *futex)
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{
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int val = atomic_exchange_rel (futex, 0);
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if (__builtin_expect (val & FUTEX_WAITERS, 0))
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lll_futex_wake (futex, 1);
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}
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#define lll_robust_mutex_unlock(futex) __lll_robust_mutex_unlock(&(futex))
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static inline void __attribute__ ((always_inline))
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__lll_mutex_unlock_force (int *futex)
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{
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@ -1,4 +1,4 @@
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/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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@ -55,6 +55,15 @@
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_r10 == -1 ? -_retval : _retval; \
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})
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#define lll_robust_mutex_dead(futexv) \
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do \
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{ \
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int *__futexp = &(futexv); \
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atomic_or (__futexp, FUTEX_OWNER_DIED); \
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DO_INLINE_SYSCALL(futex, 3, (long) __futexp, FUTEX_WAKE, 1); \
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} \
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while (0)
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/* Returns non-zero if error happened, zero if success. */
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#define lll_futex_requeue(ftx, nr_wake, nr_move, mutex, val) \
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({ \
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@ -79,12 +88,19 @@
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#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
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#define __lll_robust_mutex_trylock(futex, id) \
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(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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#define lll_robust_mutex_trylock(futex, id) \
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__lll_robust_mutex_trylock (&(futex), id)
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#define __lll_mutex_cond_trylock(futex) \
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(atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0)
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#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
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extern void __lll_lock_wait (int *futex) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
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#define __lll_mutex_lock(futex) \
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@ -96,6 +112,18 @@ extern void __lll_lock_wait (int *futex) attribute_hidden;
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#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
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#define __lll_robust_mutex_lock(futex, id) \
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({ \
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int *__futex = (futex); \
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int __val = 0; \
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\
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if (atomic_compare_and_exchange_bool_acq (__futex, id, 0) != 0) \
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__val = __lll_robust_lock_wait (__futex); \
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__val; \
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}))
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#define lll_robust_mutex_lock(futex, id) __lll_robust_mutex_lock (&(futex), id)
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#define __lll_mutex_cond_lock(futex) \
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((void) ({ \
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int *__futex = (futex); \
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@ -105,8 +133,24 @@ extern void __lll_lock_wait (int *futex) attribute_hidden;
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#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
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#define __lll_robust_mutex_cond_lock(futex, id) \
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({ \
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int *__futex = (futex); \
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int __val = 0; \
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int __id = (id) | FUTEX_WAITERS; \
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\
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if (atomic_compare_and_exchange_bool_acq (__futex, __id, 0) != 0) \
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__val = __lll_robust_lock_wait (__futex); \
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__val; \
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}))
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#define lll_robust_mutex_cond_lock(futex, id) \
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__lll_robust_mutex_cond_lock (&(futex), id)
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extern int __lll_timedlock_wait (int *futex, const struct timespec *)
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attribute_hidden;
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extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *)
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attribute_hidden;
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#define __lll_mutex_timedlock(futex, abstime) \
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@ -122,6 +166,19 @@ extern int __lll_timedlock_wait (int *futex, const struct timespec *)
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__lll_mutex_timedlock (&(futex), abstime)
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#define __lll_robust_mutex_timedlock(futex, abstime, id) \
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({ \
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int *__futex = (futex); \
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int __val = 0; \
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\
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if (atomic_compare_and_exchange_bool_acq (__futex, id, 0) != 0) \
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__val = __lll_robust_timedlock_wait (__futex, abstime); \
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__val; \
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}))
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#define lll_robust_mutex_timedlock(futex, abstime, id) \
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__lll_robust_mutex_timedlock (&(futex), abstime, id)
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#define __lll_mutex_unlock(futex) \
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((void) ({ \
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int *__futex = (futex); \
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@ -134,6 +191,18 @@ extern int __lll_timedlock_wait (int *futex, const struct timespec *)
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__lll_mutex_unlock(&(futex))
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#define __lll_robust_mutex_unlock(futex) \
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((void) ({ \
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int *__futex = (futex); \
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int __val = atomic_exchange_rel (__futex, 0); \
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\
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if (__builtin_expect (__val & FUTEX_WAITERS, 0)) \
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lll_futex_wake (__futex, 1); \
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}))
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#define lll_robust_mutex_unlock(futex) \
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__lll_robust_mutex_unlock(&(futex))
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#define __lll_mutex_unlock_force(futex) \
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((void) ({ \
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int *__futex = (futex); \
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95
nptl/sysdeps/unix/sysv/linux/lowlevelrobustlock.c
Normal file
95
nptl/sysdeps/unix/sysv/linux/lowlevelrobustlock.c
Normal file
@ -0,0 +1,95 @@
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/* Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
|
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|
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You should have received a copy of the GNU Lesser General Public
|
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include <sysdep.h>
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#include <lowlevellock.h>
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#include <sys/time.h>
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#include <pthreadP.h>
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int
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__lll_robust_lock_wait (int *futex)
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{
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int oldval = *futex;
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int tid = THREAD_GETMEM (THREAD_SELF, tid);
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do
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{
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if (__builtin_expect (oldval & FUTEX_OWNER_DIED, 0))
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return oldval;
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int newval = oldval | FUTEX_WAITERS;
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if (oldval != newval
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&& atomic_compare_and_exchange_bool_acq (futex, newval, oldval))
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continue;
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lll_futex_wait (futex, newval);
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}
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while ((oldval = atomic_compare_and_exchange_val_acq (futex, tid, 0)) != 0);
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return 0;
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}
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int
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__lll_robust_timedlock_wait (int *futex, const struct timespec *abstime)
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{
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/* Reject invalid timeouts. */
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if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
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return EINVAL;
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int tid = THREAD_GETMEM (THREAD_SELF, tid);
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do
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{
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struct timeval tv;
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struct timespec rt;
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/* Get the current time. */
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(void) __gettimeofday (&tv, NULL);
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/* Compute relative timeout. */
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rt.tv_sec = abstime->tv_sec - tv.tv_sec;
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rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
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if (rt.tv_nsec < 0)
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{
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rt.tv_nsec += 1000000000;
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--rt.tv_sec;
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}
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/* Already timed out? */
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if (rt.tv_sec < 0)
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return ETIMEDOUT;
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/* Wait. */
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int oldval = *futex;
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if (__builtin_expect (oldval & FUTEX_OWNER_DIED, 0))
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return oldval;
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int newval = oldval | FUTEX_WAITERS;
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if (oldval != newval
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&& atomic_compare_and_exchange_bool_acq (futex, newval, oldval))
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continue;
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lll_futex_timed_wait (futex, newval, &rt);
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}
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while (atomic_compare_and_exchange_bool_acq (futex, tid, 0));
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return 0;
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}
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@ -1,4 +1,4 @@
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||||
/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
|
||||
|
||||
@ -69,6 +69,17 @@
|
||||
INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \
|
||||
})
|
||||
|
||||
#define lll_robust_mutex_dead(futexv) \
|
||||
do \
|
||||
{ \
|
||||
INTERNAL_SYSCALL_DECL (__err); \
|
||||
int *__futexp = &(futexv); \
|
||||
\
|
||||
atomic_or (__futexp, FUTEX_OWNER_DIED); \
|
||||
INTERNAL_SYSCALL (futex, __err, 4, __futexp, FUTEX_WAKE, 1, 0); \
|
||||
} \
|
||||
while (0)
|
||||
|
||||
/* Returns non-zero if error happened, zero if success. */
|
||||
#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val) \
|
||||
({ \
|
||||
@ -102,8 +113,8 @@
|
||||
# define __lll_rel_instr "sync"
|
||||
#endif
|
||||
|
||||
/* Set *futex to 1 if it is 0, atomically. Returns the old value */
|
||||
#define __lll_trylock(futex) \
|
||||
/* Set *futex to ID if it is 0, atomically. Returns the old value */
|
||||
#define __lll_robust_trylock(futex, id) \
|
||||
({ int __val; \
|
||||
__asm __volatile ("1: lwarx %0,0,%2\n" \
|
||||
" cmpwi 0,%0,0\n" \
|
||||
@ -112,31 +123,26 @@
|
||||
" bne- 1b\n" \
|
||||
"2: " __lll_acq_instr \
|
||||
: "=&r" (__val), "=m" (*futex) \
|
||||
: "r" (futex), "r" (1), "m" (*futex) \
|
||||
: "r" (futex), "r" (id), "m" (*futex) \
|
||||
: "cr0", "memory"); \
|
||||
__val; \
|
||||
})
|
||||
|
||||
#define lll_robust_mutex_trylock(lock, id) __lll_robust_trylock (&(lock), id)
|
||||
|
||||
/* Set *futex to 1 if it is 0, atomically. Returns the old value */
|
||||
#define __lll_trylock(futex) __lll_robust_trylock (futex, 1)
|
||||
|
||||
#define lll_mutex_trylock(lock) __lll_trylock (&(lock))
|
||||
|
||||
/* Set *futex to 2 if it is 0, atomically. Returns the old value */
|
||||
#define __lll_cond_trylock(futex) \
|
||||
({ int __val; \
|
||||
__asm __volatile ("1: lwarx %0,0,%2\n" \
|
||||
" cmpwi 0,%0,0\n" \
|
||||
" bne 2f\n" \
|
||||
" stwcx. %3,0,%2\n" \
|
||||
" bne- 1b\n" \
|
||||
"2: " __lll_acq_instr \
|
||||
: "=&r" (__val), "=m" (*futex) \
|
||||
: "r" (futex), "r" (2), "m" (*futex) \
|
||||
: "cr0", "memory"); \
|
||||
__val; \
|
||||
})
|
||||
#define __lll_cond_trylock(futex) __lll_robust_trylock (futex, 2)
|
||||
|
||||
#define lll_mutex_cond_trylock(lock) __lll_cond_trylock (&(lock))
|
||||
|
||||
|
||||
extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
|
||||
|
||||
#define lll_mutex_lock(lock) \
|
||||
(void) ({ \
|
||||
@ -146,6 +152,16 @@ extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
__lll_lock_wait (__futex); \
|
||||
})
|
||||
|
||||
#define lll_robust_mutex_lock(lock, id) \
|
||||
({ \
|
||||
int *__futex = &(lock); \
|
||||
int __val = 0; \
|
||||
if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
|
||||
0), 0)) \
|
||||
__val = __lll_robust_lock_wait (__futex); \
|
||||
__val; \
|
||||
})
|
||||
|
||||
#define lll_mutex_cond_lock(lock) \
|
||||
(void) ({ \
|
||||
int *__futex = &(lock); \
|
||||
@ -154,8 +170,22 @@ extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
__lll_lock_wait (__futex); \
|
||||
})
|
||||
|
||||
#define lll_robust_mutex_cond_lock(lock, id) \
|
||||
({ \
|
||||
int *__futex = &(lock); \
|
||||
int __val = 0; \
|
||||
int __id = id | FUTEX_WAITERS; \
|
||||
if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, __id,\
|
||||
0), 0)) \
|
||||
__val = __lll_robust_lock_wait (__futex); \
|
||||
__val; \
|
||||
})
|
||||
|
||||
|
||||
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;
|
||||
|
||||
#define lll_mutex_timedlock(lock, abstime) \
|
||||
({ \
|
||||
@ -167,6 +197,16 @@ extern int __lll_timedlock_wait
|
||||
__val; \
|
||||
})
|
||||
|
||||
#define lll_robust_mutex_timedlock(lock, abstime, id) \
|
||||
({ \
|
||||
int *__futex = &(lock); \
|
||||
int __val = 0; \
|
||||
if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
|
||||
0), 0)) \
|
||||
__val = __lll_robust_timedlock_wait (__futex, abstime); \
|
||||
__val; \
|
||||
})
|
||||
|
||||
#define lll_mutex_unlock(lock) \
|
||||
((void) ({ \
|
||||
int *__futex = &(lock); \
|
||||
@ -175,6 +215,14 @@ extern int __lll_timedlock_wait
|
||||
lll_futex_wake (__futex, 1); \
|
||||
}))
|
||||
|
||||
#define lll_robust_mutex_unlock(lock) \
|
||||
((void) ({ \
|
||||
int *__futex = &(lock); \
|
||||
int __val = atomic_exchange_rel (__futex, 0); \
|
||||
if (__builtin_expect (__val & FUTEX_WAITERS, 0)) \
|
||||
lll_futex_wake (__futex, 1); \
|
||||
}))
|
||||
|
||||
#define lll_mutex_unlock_force(lock) \
|
||||
((void) ({ \
|
||||
int *__futex = &(lock); \
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
||||
|
||||
@ -85,6 +85,17 @@
|
||||
})
|
||||
|
||||
|
||||
#define lll_robust_mutex_dead(futexv) \
|
||||
do \
|
||||
{ \
|
||||
int *__futexp = &(futexv); \
|
||||
\
|
||||
atomic_or (__futexp, FUTEX_OWNER_DIED); \
|
||||
lll_futex_wake (__futexp, 1); \
|
||||
} \
|
||||
while (0)
|
||||
|
||||
|
||||
/* Returns non-zero if error happened, zero if success. */
|
||||
#define lll_futex_requeue(futex, nr_wake, nr_move, mutex, val) \
|
||||
({ \
|
||||
@ -167,7 +178,23 @@ __lll_mutex_cond_trylock (int *futex)
|
||||
#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
|
||||
|
||||
|
||||
static inline int
|
||||
__attribute__ ((always_inline))
|
||||
__lll_robust_mutex_trylock (int *futex, int id)
|
||||
{
|
||||
unsigned int old;
|
||||
|
||||
__asm __volatile ("cs %0,%3,%1"
|
||||
: "=d" (old), "=Q" (*futex)
|
||||
: "0" (0), "d" (id), "m" (*futex) : "cc", "memory" );
|
||||
return old != 0;
|
||||
}
|
||||
#define lll_robust_mutex_trylock(futex, id) \
|
||||
__lll_robust_mutex_trylock (&(futex), id)
|
||||
|
||||
|
||||
extern void __lll_lock_wait (int *futex) attribute_hidden;
|
||||
extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
@ -178,6 +205,17 @@ __lll_mutex_lock (int *futex)
|
||||
}
|
||||
#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
|
||||
|
||||
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)
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_cond_lock (int *futex)
|
||||
@ -187,8 +225,13 @@ __lll_mutex_cond_lock (int *futex)
|
||||
}
|
||||
#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
|
||||
|
||||
#define lll_robust_mutex_cond_lock(futex, id) \
|
||||
__lll_robust_mutex_lock (&(futex), (id) | FUTEX_WAITERS)
|
||||
|
||||
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;
|
||||
|
||||
static inline int
|
||||
__attribute__ ((always_inline))
|
||||
@ -202,6 +245,19 @@ __lll_mutex_timedlock (int *futex, const struct timespec *abstime)
|
||||
#define lll_mutex_timedlock(futex, abstime) \
|
||||
__lll_mutex_timedlock (&(futex), abstime)
|
||||
|
||||
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)
|
||||
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
@ -218,6 +274,21 @@ __lll_mutex_unlock (int *futex)
|
||||
__lll_mutex_unlock(&(futex))
|
||||
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_robust_mutex_unlock (int *futex)
|
||||
{
|
||||
int oldval;
|
||||
int newval = 0;
|
||||
|
||||
lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
|
||||
if (oldval & FUTEX_WAITERS)
|
||||
lll_futex_wake (futex, 1);
|
||||
}
|
||||
#define lll_robust_mutex_unlock(futex) \
|
||||
__lll_robust_mutex_unlock(&(futex))
|
||||
|
||||
|
||||
static inline void
|
||||
__attribute__ ((always_inline))
|
||||
__lll_mutex_unlock_force (int *futex)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user