+2003-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/generic/ldsodefs.h (_dl_allocate_tls, _dl_deallocate_tls):
+ Add rtld_hidden_proto.
+ * sysdeps/generic/dl-tls.c (_dl_deallocate_tls): Add rtld_hidden_def.
+ (_dl_allocate_tls): Likewise. Remove INTDEF.
+
2002-07-05 Kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/sh/memcpy.S: Optimize. Based on a patch by Toshiyasu
+2003-01-03 Jakub Jelinek <jakub@redhat.com>
+
+ * Makefile ($(objpfx)libpthread.so): Depend on ld.so.
+
2003-01-02 Ulrich Drepper <drepper@redhat.com>
* tst-cancel-wrappers.sh: Exclude sigwait.c as well, it does not have
# Depend on libc.so so a DT_NEEDED is generated in the shared objects.
# This ensures they will load libc.so for needed symbols if loaded by
# a statically-linked program that hasn't already loaded it.
-$(objpfx)libpthread.so: $(libc-link.so) $(common-objpfx)libc_nonshared.a
+# Depend on ld.so too to get proper versions of ld.so symbols.
+$(objpfx)libpthread.so: $(libc-link.so) $(common-objpfx)libc_nonshared.a \
+ $(if $(filter yes,$(elf)), $(elfobjdir)/ld.so)
# Make sure we link with the thread library.
ifeq ($(build-shared),yes)
+2003-01-03 Ulrich Drepper <drepper@redhat.com>
+
+ * atomic.h: Correct definitions of atomic_full_barrier,
+ atomic_read_barrier, atomic_write_barrier.
+
+ * old_pthread_cond_broadcast.c: Make memory allocate and initialization
+ race-free.
+ * old_pthread_cond_signal.c: Likewise.
+ * old_pthread_cond_timedwait.c: Likewise.
+ * old_pthread_cond_wait.c: Likewise.
+
2003-01-03 Jakub Jelinek <jakub@redhat.com>
* Makefile ($(objpfx)libpthread.so): Depend on ld.so.
# Depend on libc.so so a DT_NEEDED is generated in the shared objects.
# This ensures they will load libc.so for needed symbols if loaded by
# a statically-linked program that hasn't already loaded it.
+# Depend on ld.so too to get proper versions of ld.so symbols.
$(objpfx)libpthread.so: $(common-objpfx)libc.so \
- $(common-objpfx)libc_nonshared.a
+ $(common-objpfx)libc_nonshared.a \
+ $(if $(filter yes,$(elf)), $(elfobjdir)/ld.so)
# Make sure we link with the thread library.
ifeq ($(build-shared),yes)
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
#ifndef atomic_full_barrier
-# define full_barrier() __asm ("" ::: "memory")
+# define atomic_full_barrier() __asm ("" ::: "memory")
#endif
#ifndef atomic_read_barrier
-# define read_barrier() full_barrier()
+# define atomic_read_barrier() atomic_full_barrier()
#endif
#ifndef atomic_write_barrier
-# define write_barrier() full_barrier()
+# define atomic_write_barrier() atomic_full_barrier()
#endif
#endif /* atomic.h */
#include <errno.h>
#include <stdlib.h>
#include "pthreadP.h"
-#include <lowlevellock.h>
+#include <atomic.h>
#include <shlib-compat.h>
{
if (cond->cond == NULL)
{
- lll_mutex_lock (cond->lock);
+ pthread_cond_t *newcond;
- /* Check whether the condvar is still not allocated. */
- if (cond->cond == NULL)
- cond->cond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ if (newcond == NULL)
+ return ENOMEM;
- lll_mutex_unlock (cond->lock);
+ *newcond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
- if (cond->cond == NULL)
- return ENOMEM;
+ atomic_write_barrier ();
- *cond->cond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
+ if (atomic_compare_and_exchange_acq (&cond->cond, newcond, NULL) != 0)
+ /* Somebody else just initialized the condvar. */
+ free (newcond);
}
return __pthread_cond_broadcast (cond->cond);
#include <errno.h>
#include <stdlib.h>
#include "pthreadP.h"
+#include <atomic.h>
#include <shlib-compat.h>
{
if (cond->cond == NULL)
{
- lll_mutex_lock (cond->lock);
+ pthread_cond_t *newcond;
- /* Check whether the condvar is still not allocated. */
- if (cond->cond == NULL)
- cond->cond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ if (newcond == NULL)
+ return ENOMEM;
- lll_mutex_unlock (cond->lock);
+ *newcond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
- if (cond->cond == NULL)
- return ENOMEM;
+ atomic_write_barrier ();
- *cond->cond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
+ if (atomic_compare_and_exchange_acq (&cond->cond, newcond, NULL) != 0)
+ /* Somebody else just initialized the condvar. */
+ free (newcond);
}
return __pthread_cond_signal (cond->cond);
#include <errno.h>
#include <stdlib.h>
#include "pthreadP.h"
+#include <atomic.h>
#include <shlib-compat.h>
{
if (cond->cond == NULL)
{
- lll_mutex_lock (cond->lock);
+ pthread_cond_t *newcond;
- /* Check whether the condvar is still not allocated. */
- if (cond->cond == NULL)
- cond->cond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ if (newcond == NULL)
+ return ENOMEM;
- lll_mutex_unlock (cond->lock);
+ *newcond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
- if (cond->cond == NULL)
- return ENOMEM;
+ atomic_write_barrier ();
- *cond->cond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
+ if (atomic_compare_and_exchange_acq (&cond->cond, newcond, NULL) != 0)
+ /* Somebody else just initialized the condvar. */
+ free (newcond);
}
return __pthread_cond_timedwait (cond->cond, mutex, abstime);
#include <errno.h>
#include <stdlib.h>
#include "pthreadP.h"
+#include <atomic.h>
#include <shlib-compat.h>
{
if (cond->cond == NULL)
{
- lll_mutex_lock (cond->lock);
+ pthread_cond_t *newcond;
- /* Check whether the condvar is still not allocated. */
- if (cond->cond == NULL)
- cond->cond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ newcond = (pthread_cond_t *) malloc (sizeof (pthread_cond_t));
+ if (newcond == NULL)
+ return ENOMEM;
- lll_mutex_unlock (cond->lock);
+ *newcond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
- if (cond->cond == NULL)
- return ENOMEM;
+ atomic_write_barrier ();
- *cond->cond = (struct pthread_cond_t) PTHREAD_COND_INITIALIZER;
+ if (atomic_compare_and_exchange_acq (&cond->cond, newcond, NULL) != 0)
+ /* Somebody else just initialized the condvar. */
+ free (newcond);
}
return __pthread_cond_wait (cond->cond, mutex);
/* Thread-local storage handling in the ELF dynamic linker. Generic version.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003 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
? _dl_allocate_tls_storage ()
: allocate_dtv (mem));
}
-INTDEF(_dl_allocate_tls)
+rtld_hidden_def (_dl_allocate_tls)
void
free (tcb);
}
}
-
+rtld_hidden_def (_dl_deallocate_tls)
# ifdef SHARED
/* Run-time dynamic linker data structures for loaded ELF shared objects.
- Copyright (C) 1995-1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1995-2002, 2003 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
/* Allocate memory for static TLS block (unless MEM is nonzero) and dtv. */
extern void *_dl_allocate_tls (void *mem) internal_function;
+rtld_hidden_proto (_dl_allocate_tls)
/* Get size and alignment requirements of the static TLS block. */
extern void _dl_get_tls_static_info (size_t *sizep, size_t *alignp)
/* Deallocate memory allocated with _dl_allocate_tls. */
extern void _dl_deallocate_tls (void *tcb, bool dealloc_tcb) internal_function;
+rtld_hidden_proto (_dl_deallocate_tls)
/* Return the symbol address given the map of the module it is in and
the symbol record. */
projects / platform / upstream / linaro-glibc.git / commitdiff