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Get rid of lll_robust_trylock.
This commit is contained in:
Roland McGrath
parent
5853672669
commit
887865fcfa
22
ChangeLog
22
ChangeLog
@ -1,3 +1,25 @@
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2014-07-10 Roland McGrath <roland@hack.frob.com>
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* nptl/pthread_mutex_trylock.c (__pthread_mutex_trylock):
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Use atomic_compare_and_exchange_val_acq directly rather than
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lll_robust_trylock.
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* sysdeps/unix/sysv/linux/aarch64/lowlevellock.h
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(__lll_robust_trylock, lll_robust_trylock): Removed.
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* sysdeps/unix/sysv/linux/alpha/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/arm/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/ia64/nptl/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/m68k/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/mips/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
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* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
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2014-07-02 Florian Weimer <fweimer@redhat.com>
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* manual/locale.texi (Locale Names): New section documenting
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@ -72,7 +72,7 @@ __pthread_mutex_trylock (mutex)
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elision:
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if (lll_trylock_elision (mutex->__data.__lock,
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mutex->__data.__elision) != 0)
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break;
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break;
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/* Don't record the ownership. */
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return 0;
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@ -159,7 +159,8 @@ __pthread_mutex_trylock (mutex)
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}
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}
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oldval = lll_robust_trylock (mutex->__data.__lock, id);
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oldval = atomic_compare_and_exchange_val_acq (&mutex->__data.__lock,
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id, 0);
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if (oldval != 0 && (oldval & FUTEX_OWNER_DIED) == 0)
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{
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THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
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@ -180,11 +180,6 @@
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#define lll_cond_trylock(lock) \
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atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
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#define __lll_robust_trylock(futex, id) \
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(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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#define lll_robust_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -187,14 +187,6 @@ __lll_cond_trylock(int *futex)
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#define lll_cond_trylock(lock) __lll_cond_trylock (&(lock))
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static inline int __attribute__((always_inline))
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__lll_robust_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_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -176,11 +176,6 @@
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#define lll_cond_trylock(lock) \
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atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
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#define __lll_robust_trylock(futex, id) \
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(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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#define lll_robust_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -193,15 +193,6 @@ typedef int lll_lock_t;
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INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
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})
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static inline int
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__attribute__ ((always_inline))
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__lll_robust_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_trylock(futex, id) \
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__lll_robust_trylock (&(futex), id)
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static inline int
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__attribute__ ((always_inline))
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__lll_cond_trylock (int *futex)
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@ -188,15 +188,6 @@
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: "memory"); \
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ret; })
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#define lll_robust_trylock(futex, id) \
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({ int ret; \
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__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
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: "=a" (ret), "=m" (futex) \
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: "r" (id), "m" (futex), \
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"0" (LLL_LOCK_INITIALIZER) \
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: "memory"); \
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ret; })
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#define lll_cond_trylock(futex) \
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({ int ret; \
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@ -169,12 +169,6 @@ while (0)
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#define lll_trylock(futex) __lll_trylock (&(futex))
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#define __lll_robust_trylock(futex, id) \
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(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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#define lll_robust_trylock(futex, id) \
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__lll_robust_trylock (&(futex), id)
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#define __lll_cond_trylock(futex) \
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(atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0)
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#define lll_cond_trylock(futex) __lll_cond_trylock (&(futex))
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@ -177,9 +177,6 @@
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#define lll_cond_trylock(lock) \
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atomic_compare_and_exchange_val_acq (&(lock), 2, 0)
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#define lll_robust_trylock(lock, id) \
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atomic_compare_and_exchange_val_acq (&(lock), id, 0)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -180,11 +180,6 @@
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#define lll_cond_trylock(lock) \
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atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
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#define __lll_robust_trylock(futex, id) \
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(atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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#define lll_robust_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -187,14 +187,6 @@ __lll_cond_trylock(int *futex)
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#define lll_cond_trylock(lock) __lll_cond_trylock (&(lock))
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static inline int __attribute__((always_inline))
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__lll_robust_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_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -202,23 +202,6 @@
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# endif
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#endif
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/* Set *futex to ID if it is 0, atomically. Returns the old value */
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#define __lll_robust_trylock(futex, id) \
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({ int __val; \
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__asm __volatile ("1: lwarx %0,0,%2" MUTEX_HINT_ACQ "\n" \
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" cmpwi 0,%0,0\n" \
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" bne 2f\n" \
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" stwcx. %3,0,%2\n" \
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" bne- 1b\n" \
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"2: " __lll_acq_instr \
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: "=&r" (__val), "=m" (*futex) \
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: "r" (futex), "r" (id), "m" (*futex) \
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: "cr0", "memory"); \
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__val; \
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})
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#define lll_robust_trylock(lock, id) __lll_robust_trylock (&(lock), id)
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/* Set *futex to 1 if it is 0, atomically. Returns the old value */
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#define __lll_trylock(futex) __lll_robust_trylock (futex, 1)
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@ -210,21 +210,6 @@ __lll_cond_trylock (int *futex)
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#define lll_cond_trylock(futex) __lll_cond_trylock (&(futex))
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static inline int
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__attribute__ ((always_inline))
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__lll_robust_trylock (int *futex, int id)
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{
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unsigned int old;
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__asm __volatile ("cs %0,%3,%1"
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: "=d" (old), "=Q" (*futex)
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: "0" (0), "d" (id), "m" (*futex) : "cc", "memory" );
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return old != 0;
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}
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#define lll_robust_trylock(futex, id) \
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__lll_robust_trylock (&(futex), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -118,28 +118,6 @@ extern int __lll_unlock_wake (int *__futex, int private) attribute_hidden;
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: "r0", "r1", "r2", "t", "memory"); \
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__result; })
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#define lll_robust_trylock(futex, id) \
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({ unsigned char __result; \
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__asm __volatile ("\
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.align 2\n\
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mova 1f,r0\n\
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nop\n\
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mov r15,r1\n\
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mov #-8,r15\n\
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0: mov.l @%1,r2\n\
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cmp/eq r2,%3\n\
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bf 1f\n\
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mov.l %2,@%1\n\
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1: mov r1,r15\n\
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mov #-1,%0\n\
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negc %0,%0"\
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: "=r" (__result) \
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: "r" (&(futex)), \
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"r" (id), \
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"r" (LLL_LOCK_INITIALIZER) \
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: "r0", "r1", "r2", "t", "memory"); \
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__result; })
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#define lll_cond_trylock(futex) \
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({ unsigned char __result; \
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__asm __volatile ("\
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@ -203,15 +203,6 @@ __lll_cond_trylock (int *futex)
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}
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#define lll_cond_trylock(futex) __lll_cond_trylock (&(futex))
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static inline int
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__attribute__ ((always_inline))
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__lll_robust_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_trylock(futex, id) \
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__lll_robust_trylock (&(futex), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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@ -186,14 +186,6 @@ __lll_cond_trylock (int *futex)
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#define lll_cond_trylock(lock) __lll_cond_trylock (&(lock))
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static inline int __attribute__ ((always_inline))
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__lll_robust_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_trylock(lock, id) \
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__lll_robust_trylock (&(lock), id)
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extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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@ -165,14 +165,6 @@
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: "memory"); \
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ret; })
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#define lll_robust_trylock(futex, id) \
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({ int ret; \
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__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
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: "=a" (ret), "=m" (futex) \
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: "r" (id), "m" (futex), "0" (LLL_LOCK_INITIALIZER) \
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: "memory"); \
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ret; })
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#define lll_cond_trylock(futex) \
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({ int ret; \
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__asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
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