* sysdeps/unix/sysv/linux/hppa/nptl/internaltypes.h: Remove.
* sysdeps/unix/sysv/linux/hppa/nptl/bits/pthreadtypes.h
(pthread_rwlock_t): Split __flags into __pad2, __pad1, __shared,
and __flags. Update comments. Update copyright.
* sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSOPE_FLAG_WAIT,
THREAD_GSCOPE_RSEET_FLAG, THREAD_GSCOPE_SET_FLAG, THREAD_GSCOPE_WAIT.
Update copyright.
* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.c: Update copyright.
(__lll_lock_wait): Call lll_futex_wait with LLL_SHARED.
(__lll_timedlock_wait): Call lll_futex_timed_wait with LLL_SHARED.
(lll_unlock_Wake_cb): Use lll_private_futex_wake.
(___lll_timedwait_tid): Call lll_futex_timed_wait with LLL_SAHRED.
* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Define
FUTEX_PRIVATE_FLAG, LLL_PRIVATE, LLL_SHARED, lll_private_futex_wait,
lll_private_futex_timed_wait, lll_private_Futex_wake. Add private
argument to lll_futex_wait, lll_futex_timed_wait, lll_futex_wake,
lll_futex_wake_unlock.
* sysdeps/unix/sysv/linux/hppa/nptl/pthread_once.c: Update copyright.
(clear_once_control): Use lll_private_futex_wake.
(__pthread_once): Use lll_private_futex_wait, and
lll_private_futex_wake.
2007-07-28 Randolph Chung <tausq@debian.org>
* sysdeps/hppa/nptl/tls.h (DB_THREAD_SELF): Fix definition.
-2006-07-16 Jeff Bailey <jbailey@raspberryginger.com>
+2007-07-28 Carlos O'Donell <carlos@systemhalted.org>
+
+ * sysdeps/unix/sysv/linux/hppa/nptl/internaltypes.h: Remove.
+ * sysdeps/unix/sysv/linux/hppa/nptl/bits/pthreadtypes.h
+ (pthread_rwlock_t): Split __flags into __pad2, __pad1, __shared,
+ and __flags. Update comments. Update copyright.
+ * sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_FLAG_UNUSED,
+ THREAD_GSCOPE_FLAG_USED, THREAD_GSOPE_FLAG_WAIT,
+ THREAD_GSCOPE_RSEET_FLAG, THREAD_GSCOPE_SET_FLAG, THREAD_GSCOPE_WAIT.
+ Update copyright.
+ * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.c: Update copyright.
+ (__lll_lock_wait): Call lll_futex_wait with LLL_SHARED.
+ (__lll_timedlock_wait): Call lll_futex_timed_wait with LLL_SHARED.
+ (lll_unlock_Wake_cb): Use lll_private_futex_wake.
+ (___lll_timedwait_tid): Call lll_futex_timed_wait with LLL_SAHRED.
+ * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Define
+ FUTEX_PRIVATE_FLAG, LLL_PRIVATE, LLL_SHARED, lll_private_futex_wait,
+ lll_private_futex_timed_wait, lll_private_Futex_wake. Add private
+ argument to lll_futex_wait, lll_futex_timed_wait, lll_futex_wake,
+ lll_futex_wake_unlock.
+ * sysdeps/unix/sysv/linux/hppa/nptl/pthread_once.c: Update copyright.
+ (clear_once_control): Use lll_private_futex_wake.
+ (__pthread_once): Use lll_private_futex_wait, and
+ lll_private_futex_wake.
+
+2007-07-28 Randolph Chung <tausq@debian.org>
+
+ * sysdeps/hppa/nptl/tls.h (DB_THREAD_SELF): Fix definition.
+
+2007-06-16 Jeff Bailey <jbailey@raspberryginger.com>
* sysdeps/unix/sysv/linux/hppa/sys/procfs.h: Don't
include asm/elf.h. Declare elf_greg_t, elf_gregset_t,
/* Definition for thread-local data handling. NPTL/hppa version.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 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
__self - 1; \
})
-/* FIXME */
-/* Magic for libthread_db to know how to do THREAD_SELF. */
+/* Magic for libthread_db to know how to do THREAD_SELF.
+ Our thread pointer is stored in cr27. See asm/elf.h for the offset into
+ elf_gregset_t. The thread descriptor is sizeof (struct pthread) away. */
# define DB_THREAD_SELF \
- REGISTER (32, 32, 32 * 4, -sizeof (struct pthread))
-
+ REGISTER (32, 32, 53 * 4, -sizeof (struct pthread))
+
/* Access to data in the thread descriptor is easy. */
# define THREAD_GETMEM(descr, member) \
descr->member
: : "r" (cr27) : "r26" );
}
+/* Get and set the global scope generation counter in struct pthread. */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED 1
+#define THREAD_GSCOPE_FLAG_WAIT 2
+#define THREAD_GSCOPE_RESET_FLAG() \
+ do \
+ { int __res \
+ = 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); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+ do \
+ { \
+ THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
+ atomic_write_barrier (); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_WAIT() \
+ GL(dl_wait_lookup_done) ()
+
#endif /* __ASSEMBLER__ */
#endif /* tls.h */
-/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 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
#ifndef _BITS_PTHREADTYPES_H
#define _BITS_PTHREADTYPES_H 1
-/* Linuxthread type sizes:
+/* Linuxthread type sizes (bytes):
sizeof(pthread_attr_t) = 0x24 (36)
sizeof(pthread_mutex_t) = 0x30 (48)
sizeof(pthread_mutexattr_t) = 0x4 (4)
sizeof(pthread_cond_t) = 0x30 (48)
- = Grew to 64 bytes in NPTL.
- No pthread_cond_compat_t ...
+ = Expanded to 64 bytes in NPTL.
+ sizeof(pthread_cond_compat_t) = 0xc (12)
+ = Did not exist in Linuxthreads.
sizeof(pthread_condattr_t) = 0x4 (4)
sizeof(pthread_rwlock_t) = 0x40 (64)
sizeof(pthread_rwlockattr_t) = 0x8 (8)
implementation. For NPTL we use LWS Compare and
Exchange to implement primitives. */
#if 0
-typedef struct {
+typedef volatile struct {
int lock[4];
-} __atomic_lock_t;
+} __attribute__ ((aligned(16))) __atomic_lock_t;
#endif
typedef union
unsigned int __nr_writers_queued;
/* FLAGS must stay at this position in the structure to maintain
binary compatibility. */
- unsigned int __flags;
+ unsigned char __pad2;
+ unsigned char __pad1;
+ unsigned char __shared;
+ unsigned char __flags;
int __writer;
} __data;
char __size[__SIZEOF_PTHREAD_RWLOCK_T];
+++ /dev/null
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _INTERNALTYPES_H
-#define _INTERNALTYPES_H 1
-
-#include <stdint.h>
-
-
-struct pthread_attr
-{
- /* Scheduler parameters and priority. */
- struct sched_param schedparam;
- int schedpolicy;
- /* Various flags like detachstate, scope, etc. */
- int flags;
- /* Size of guard area. */
- size_t guardsize;
- /* Stack handling. */
- void *stackaddr;
- size_t stacksize;
- /* Affinity map. */
- cpu_set_t *cpuset;
- size_t cpusetsize;
-};
-
-#define ATTR_FLAG_DETACHSTATE 0x0001
-#define ATTR_FLAG_NOTINHERITSCHED 0x0002
-#define ATTR_FLAG_SCOPEPROCESS 0x0004
-#define ATTR_FLAG_STACKADDR 0x0008
-#define ATTR_FLAG_OLDATTR 0x0010
-#define ATTR_FLAG_SCHED_SET 0x0020
-#define ATTR_FLAG_POLICY_SET 0x0040
-
-
-/* Mutex attribute data structure. */
-struct pthread_mutexattr
-{
- /* Identifier for the kind of mutex.
-
- Bit 31 is set if the mutex is to be shared between processes.
-
- Bit 0 to 30 contain one of the PTHREAD_MUTEX_ values to identify
- the type of the mutex. */
- int mutexkind;
-};
-
-
-/* Conditional variable attribute data structure. */
-struct pthread_condattr
-{
- /* Combination of values:
-
- Bit 0 : flag whether coditional variable will be shareable between
- processes.
-
- Bit 1-7: clock ID. */
- int value;
-};
-
-
-/* The __NWAITERS field is used as a counter and to house the number
- of bits which represent the clock. COND_CLOCK_BITS is the number
- of bits reserved for the clock. */
-#define COND_CLOCK_BITS 1
-
-
-/* Read-write lock variable attribute data structure. */
-struct pthread_rwlockattr
-{
- int lockkind;
- int pshared;
-};
-
-
-/* Barrier data structure. */
-struct pthread_barrier
-{
- unsigned int curr_event;
- int lock;
- unsigned int left;
- unsigned int init_count;
-};
-
-
-/* Barrier variable attribute data structure. */
-struct pthread_barrierattr
-{
- int pshared;
-};
-
-
-/* Thread-local data handling. */
-struct pthread_key_struct
-{
- /* Sequence numbers. Even numbers indicated vacant entries. Note
- that zero is even. We use uintptr_t to not require padding on
- 32- and 64-bit machines. On 64-bit machines it helps to avoid
- wrapping, too. */
- uintptr_t seq;
-
- /* Destructor for the data. */
- void (*destr) (void *);
-};
-
-/* Check whether an entry is unused. */
-#define KEY_UNUSED(p) (((p) & 1) == 0)
-/* Check whether a key is usable. We cannot reuse an allocated key if
- the sequence counter would overflow after the next destroy call.
- This would mean that we potentially free memory for a key with the
- same sequence. This is *very* unlikely to happen, A program would
- have to create and destroy a key 2^31 times (on 32-bit platforms,
- on 64-bit platforms that would be 2^63). If it should happen we
- simply don't use this specific key anymore. */
-#define KEY_USABLE(p) (((uintptr_t) (p)) < ((uintptr_t) ((p) + 2)))
-
-
-/* Handling of read-write lock data. */
-// XXX For now there is only one flag. Maybe more in future.
-#define RWLOCK_RECURSIVE(rwlock) ((rwlock)->__data.__flags != 0)
-
-
-/* Semaphore variable structure. */
-struct sem
-{
- unsigned int count;
-};
-
-
-/* Compatibility type for old conditional variable interfaces. */
-typedef struct
-{
- pthread_cond_t *cond;
-} pthread_cond_2_0_t;
-
-#endif /* internaltypes.h */
-
/* low level locking for pthread library. Generic futex-using version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
{
int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
if (oldval != 0)
- lll_futex_wait (futex, 2);
+ lll_futex_wait (futex, 2, LLL_SHARED);
}
while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
}
/* Wait. */
int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
if (oldval != 0)
- lll_futex_timed_wait (futex, 2, &rt);
+ lll_futex_timed_wait (futex, 2, &rt, LLL_SHARED);
}
while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0);
return 0;
int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val > 1, 0))
- lll_futex_wake (futex, 1);
+ lll_private_futex_wake (futex, 1);
return 0;
}
return ETIMEDOUT;
/* Wait until thread terminates. */
- if (lll_futex_timed_wait (tidp, tid, &rt) == -ETIMEDOUT)
+ if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT)
return ETIMEDOUT;
}
-/* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2005, 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
#define FUTEX_LOCK_PI 6
#define FUTEX_UNLOCK_PI 7
#define FUTEX_TRYLOCK_PI 8
+#define FUTEX_PRIVATE_FLAG 128
+
+/* Values for 'private' parameter of locking macros. Yes, the
+ definition seems to be backwards. But it is not. The bit will be
+ reversed before passing to the system call. */
+#define LLL_PRIVATE 0
+#define LLL_SHARED FUTEX_PRIVATE_FLAG
/* Initialize locks to zero. */
#define LLL_MUTEX_LOCK_INITIALIZER (0)
typedef int lll_lock_t;
-#define lll_futex_wait(futexp, val) \
+#define lll_futex_wait(futexp, val, private) \
+ lll_futex_timed_wait (futexp, val, 0, private)
+
+#define lll_futex_timed_wait(futexp, val, timespec, private) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
- (futexp), FUTEX_WAIT, (val), 0); \
+ (futexp), FUTEX_WAIT, (val), (timespec)); \
__ret; \
})
-#define lll_futex_timed_wait(futexp, val, timespec) \
+#define lll_futex_wake(futexp, nr, private) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
- (futexp), FUTEX_WAIT, (val), (timespec)); \
+ (futexp), FUTEX_WAKE, (nr), 0); \
__ret; \
})
-#define lll_futex_wake(futexp, nr) \
+#define lll_private_futex_wait(futex, val) \
+ lll_private_futex_timed_wait (futex, val, NULL)
+
+#ifdef __ASSUME_PRIVATE_FUTEX
+# define lll_private_futex_timed_wait(futex, val, timeout) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 4, \
- (futexp), FUTEX_WAKE, (nr), 0); \
+ (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) \
do \
{ \
int *__futexp = &(futexv); \
atomic_or (__futexp, FUTEX_OWNER_DIED); \
- lll_futex_wake (__futexp, 1); \
+ lll_futex_wake (__futexp, 1, 0); \
} \
while (0)
})
/* Returns non-zero if error happened, zero if success. */
-#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \
+#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
{
int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val > 1, 0))
- lll_futex_wake (futex, 1);
+ lll_futex_wake (futex, 1, 0);
}
#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex))
{
int val = atomic_exchange_rel (futex, 0);
if (__builtin_expect (val & mask, 0))
- lll_futex_wake (futex, 1);
+ lll_futex_wake (futex, 1, 0);
}
#define lll_robust_mutex_unlock(futex) \
__lll_robust_mutex_unlock(&(futex), FUTEX_WAITERS)
__lll_mutex_unlock_force (lll_lock_t *futex)
{
(void) atomic_exchange_rel (futex, 0);
- lll_futex_wake (futex, 1);
+ lll_futex_wake (futex, 1, 0);
}
#define lll_mutex_unlock_force(futex) __lll_mutex_unlock_force(&(futex))
thread ID while the clone is running and is reset to zero
afterwards. */
#define lll_wait_tid(tid) \
- do { \
- __typeof (tid) __tid; \
- while ((__tid = (tid)) != 0) \
- lll_futex_wait (&(tid), __tid); \
+ do { \
+ __typeof (tid) __tid; \
+ while ((__tid = (tid)) != 0) \
+ lll_futex_wait (&(tid), __tid, 0); \
} while (0)
extern int __lll_timedwait_tid (int *, const struct timespec *)
-/* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
pthread_once_t *once_control = (pthread_once_t *) arg;
*once_control = 0;
- lll_futex_wake (once_control, INT_MAX);
+ lll_private_futex_wake (once_control, INT_MAX);
}
if (((oldval ^ newval) & -4) == 0)
{
/* Same generation, some other thread was faster. Wait. */
- lll_futex_wait (once_control, newval);
+ lll_private_futex_wait (once_control, newval);
continue;
}
}
atomic_increment (once_control);
/* Wake up all other threads. */
- lll_futex_wake (once_control, INT_MAX);
+ lll_private_futex_wake (once_control, INT_MAX);
break;
}
projects / platform / upstream / linaro-glibc.git / commitdiff