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git://sourceware.org/git/glibc.git
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* sysdeps/unix/sysv/linux/arm/nptl/bits/pthreadtypes.h
(struct __pthread_internal_slist): New. (union pthread_mutex_t): Give struct a tag. Add __list in an anonymous union. (union pthread_cond_t): Use __extension__. * sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h (__lll_mutex_lock_outlined, __lll_mutex_timedlock_outlined): Remove prototypes. (lll_robust_mutex_dead, __lll_robust_mutex_trylock, lll_robust_mutex_trylock, __lll_robust_mutex_lock, lll_robust_mutex_lock, lll_robust_mutex_cond_lock, __lll_robust_mutex_timedlock, lll_robust_mutex_timedlock, __lll_robust_mutex_unlock, lll_robust_mutex_unlock): New. (__lll_robust_lock_wait, __lll_robust_timedlock_wait): New prototypes.
This commit is contained in:
Daniel Jacobowitz
parent
8e674bfd64
commit
a883978723
@ -1,3 +1,21 @@
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2006-02-27 Daniel Jacobowitz <dan@codesourcery.com>
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* sysdeps/unix/sysv/linux/arm/nptl/bits/pthreadtypes.h
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(struct __pthread_internal_slist): New.
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(union pthread_mutex_t): Give struct a tag. Add __list
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in an anonymous union.
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(union pthread_cond_t): Use __extension__.
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* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
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(__lll_mutex_lock_outlined, __lll_mutex_timedlock_outlined): Remove
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prototypes.
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(lll_robust_mutex_dead, __lll_robust_mutex_trylock,
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lll_robust_mutex_trylock, __lll_robust_mutex_lock,
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lll_robust_mutex_lock, lll_robust_mutex_cond_lock,
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__lll_robust_mutex_timedlock, lll_robust_mutex_timedlock,
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__lll_robust_mutex_unlock, lll_robust_mutex_unlock): New.
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(__lll_robust_lock_wait, __lll_robust_timedlock_wait): New
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prototypes.
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2006-02-27 Daniel Jacobowitz <dan@codesourcery.com>
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* sysdeps/unix/sysv/linux/arm/eabi/ftruncate64.c: Don't use
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@ -1,4 +1,4 @@
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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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The GNU C Library is free software; you can redistribute it and/or
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@ -43,11 +43,17 @@ typedef union
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} pthread_attr_t;
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typedef struct __pthread_internal_slist
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{
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struct __pthread_internal_slist *__next;
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} __pthread_slist_t;
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/* Data structures for mutex handling. The structure of the attribute
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type is not exposed on purpose. */
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typedef union
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{
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struct
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struct __pthread_mutex_s
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{
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int __lock;
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unsigned int __count;
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@ -56,7 +62,11 @@ typedef union
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binary compatibility. */
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int __kind;
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unsigned int __nusers;
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int __spins;
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__extension__ union
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{
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int __spins;
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__pthread_slist_t __list;
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};
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} __data;
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char __size[__SIZEOF_PTHREAD_MUTEX_T];
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long int __align;
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@ -77,15 +87,15 @@ typedef union
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{
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int __lock;
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unsigned int __futex;
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unsigned long long int __total_seq;
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unsigned long long int __wakeup_seq;
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unsigned long long int __woken_seq;
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__extension__ unsigned long long int __total_seq;
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__extension__ unsigned long long int __wakeup_seq;
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__extension__ unsigned long long int __woken_seq;
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void *__mutex;
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unsigned int __nwaiters;
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unsigned int __broadcast_seq;
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} __data;
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char __size[__SIZEOF_PTHREAD_COND_T];
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long long int __align;
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__extension__ long long int __align;
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} pthread_cond_t;
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typedef union
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@ -1,4 +1,4 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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/* Copyright (C) 2005, 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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@ -62,6 +62,15 @@
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__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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@ -125,7 +134,15 @@ __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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extern void __lll_mutex_lock_outlined (int *futex) attribute_hidden;
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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 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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@ -141,6 +158,18 @@ __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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@ -155,11 +184,13 @@ __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_mutex_timedlock_outlined (int *futex,
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const struct timespec *)
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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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@ -176,6 +207,19 @@ __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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@ -186,6 +230,17 @@ __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, int mask)
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{
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int val = atomic_exchange_rel (futex, 0);
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if (__builtin_expect (val & mask, 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), FUTEX_WAITERS)
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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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