+++ /dev/null
-/* Basic platform-independent macro definitions for mutexes and
- thread-specific data.
- Copyright (C) 1996-1998,2000,2001,2002,2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Wolfram Gloger <wg@malloc.de>, 2001.
-
- 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. */
-
-/* $Id$
- One out of _LIBC, USE_PTHREADS, USE_THR or USE_SPROC should be
- defined, otherwise the token NO_THREADS and dummy implementations
- of the macros will be defined. */
-
-#ifndef _THREAD_M_H
-#define _THREAD_M_H
-
-#undef thread_atfork_static
-
-#if defined(_LIBC) /* The GNU C library, a special case of Posix threads */
-
-#include <atomic.h>
-#include <bits/libc-lock.h>
-
-#ifdef PTHREAD_MUTEX_INITIALIZER
-
-__libc_lock_define (typedef, mutex_t)
-
-#if defined(LLL_LOCK_INITIALIZER) && !defined(NOT_IN_libc)
-
-/* Assume NPTL. */
-
-#define mutex_init(m) __libc_lock_init (*(m))
-#define mutex_lock(m) __libc_lock_lock (*(m))
-#define mutex_trylock(m) __libc_lock_trylock (*(m))
-#define mutex_unlock(m) __libc_lock_unlock (*(m))
-
-#elif defined(__libc_maybe_call2)
-
-#define mutex_init(m) \
- __libc_maybe_call2 (pthread_mutex_init, (m, NULL), (*(int *)(m) = 0))
-#define mutex_lock(m) \
- __libc_maybe_call2 (pthread_mutex_lock, (m), ((*(int *)(m) = 1), 0))
-#define mutex_trylock(m) \
- __libc_maybe_call2 (pthread_mutex_trylock, (m), \
- (*(int *)(m) ? 1 : ((*(int *)(m) = 1), 0)))
-#define mutex_unlock(m) \
- __libc_maybe_call2 (pthread_mutex_unlock, (m), (*(int *)(m) = 0))
-
-#else
-
-#define mutex_init(m) \
- __libc_maybe_call (__pthread_mutex_init, (m, NULL), (*(int *)(m) = 0))
-#define mutex_lock(m) \
- __libc_maybe_call (__pthread_mutex_lock, (m), ((*(int *)(m) = 1), 0))
-#define mutex_trylock(m) \
- __libc_maybe_call (__pthread_mutex_trylock, (m), \
- (*(int *)(m) ? 1 : ((*(int *)(m) = 1), 0)))
-#define mutex_unlock(m) \
- __libc_maybe_call (__pthread_mutex_unlock, (m), (*(int *)(m) = 0))
-
-#endif
-
-/* This is defined by newer gcc version unique for each module. */
-extern void *__dso_handle __attribute__ ((__weak__));
-
-#include <fork.h>
-
-#ifdef SHARED
-# define thread_atfork(prepare, parent, child) \
- __register_atfork (prepare, parent, child, __dso_handle)
-#else
-# define thread_atfork(prepare, parent, child) \
- __register_atfork (prepare, parent, child, \
- &__dso_handle == NULL ? NULL : __dso_handle)
-#endif
-
-#elif defined(MUTEX_INITIALIZER)
-/* Assume hurd, with cthreads */
-
-/* Cthreads `mutex_t' is a pointer to a mutex, and malloc wants just the
- mutex itself. */
-#undef mutex_t
-#define mutex_t struct mutex
-
-#undef mutex_init
-#define mutex_init(m) (__mutex_init(m), 0)
-
-#undef mutex_lock
-#define mutex_lock(m) (__mutex_lock(m), 0)
-
-#undef mutex_unlock
-#define mutex_unlock(m) (__mutex_unlock(m), 0)
-
-#define mutex_trylock(m) (!__mutex_trylock(m))
-
-#define thread_atfork(prepare, parent, child) do {} while(0)
-#define thread_atfork_static(prepare, parent, child) \
- text_set_element(_hurd_fork_prepare_hook, prepare); \
- text_set_element(_hurd_fork_parent_hook, parent); \
- text_set_element(_hurd_fork_child_hook, child);
-
-/* No we're *not* using pthreads. */
-#define __pthread_initialize ((void (*)(void))0)
-
-#else
-
-#define NO_THREADS
-
-#endif /* MUTEX_INITIALIZER && PTHREAD_MUTEX_INITIALIZER */
-
-#ifndef NO_THREADS
-
-/* thread specific data for glibc */
-
-#include <bits/libc-tsd.h>
-
-typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */
-__libc_tsd_define (static, MALLOC) /* declaration/common definition */
-#define tsd_key_create(key, destr) ((void) (key))
-#define tsd_setspecific(key, data) __libc_tsd_set (MALLOC, (data))
-#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (MALLOC))
-
-#endif
-
-#elif defined(USE_PTHREADS) /* Posix threads */
-
-#include <pthread.h>
-
-/* mutex */
-#if (defined __i386__ || defined __x86_64__) && defined __GNUC__ && \
- !defined USE_NO_SPINLOCKS
-
-#include <time.h>
-
-/* Use fast inline spinlocks. */
-typedef struct {
- volatile unsigned int lock;
- int pad0_;
-} mutex_t;
-
-#define mutex_init(m) ((m)->lock = 0)
-static inline int mutex_lock(mutex_t *m) {
- int cnt = 0, r;
- struct timespec tm;
-
- for(;;) {
- __asm__ __volatile__
- ("xchgl %0, %1"
- : "=r"(r), "=m"(m->lock)
- : "0"(1), "m"(m->lock)
- : "memory");
- if(!r)
- return 0;
- if(cnt < 50) {
- sched_yield();
- cnt++;
- } else {
- tm.tv_sec = 0;
- tm.tv_nsec = 2000001;
- nanosleep(&tm, NULL);
- cnt = 0;
- }
- }
-}
-static inline int mutex_trylock(mutex_t *m) {
- int r;
-
- __asm__ __volatile__
- ("xchgl %0, %1"
- : "=r"(r), "=m"(m->lock)
- : "0"(1), "m"(m->lock)
- : "memory");
- return r;
-}
-static inline int mutex_unlock(mutex_t *m) {
- m->lock = 0;
- __asm __volatile ("" : "=m" (m->lock) : "0" (m->lock));
- return 0;
-}
-
-#else
-
-/* Normal pthread mutex. */
-typedef pthread_mutex_t mutex_t;
-
-#define mutex_init(m) pthread_mutex_init(m, NULL)
-#define mutex_lock(m) pthread_mutex_lock(m)
-#define mutex_trylock(m) pthread_mutex_trylock(m)
-#define mutex_unlock(m) pthread_mutex_unlock(m)
-
-#endif /* (__i386__ || __x86_64__) && __GNUC__ && !USE_NO_SPINLOCKS */
-
-/* thread specific data */
-#if defined(__sgi) || defined(USE_TSD_DATA_HACK)
-
-/* Hack for thread-specific data, e.g. on Irix 6.x. We can't use
- pthread_setspecific because that function calls malloc() itself.
- The hack only works when pthread_t can be converted to an integral
- type. */
-
-typedef void *tsd_key_t[256];
-#define tsd_key_create(key, destr) do { \
- int i; \
- for(i=0; i<256; i++) (*key)[i] = 0; \
-} while(0)
-#define tsd_setspecific(key, data) \
- (key[(unsigned)pthread_self() % 256] = (data))
-#define tsd_getspecific(key, vptr) \
- (vptr = key[(unsigned)pthread_self() % 256])
-
-#else
-
-typedef pthread_key_t tsd_key_t;
-
-#define tsd_key_create(key, destr) pthread_key_create(key, destr)
-#define tsd_setspecific(key, data) pthread_setspecific(key, data)
-#define tsd_getspecific(key, vptr) (vptr = pthread_getspecific(key))
-
-#endif
-
-/* at fork */
-#define thread_atfork(prepare, parent, child) \
- pthread_atfork(prepare, parent, child)
-
-#elif USE_THR /* Solaris threads */
-
-#include <thread.h>
-
-#define mutex_init(m) mutex_init(m, USYNC_THREAD, NULL)
-
-/*
- * Hack for thread-specific data on Solaris. We can't use thr_setspecific
- * because that function calls malloc() itself.
- */
-typedef void *tsd_key_t[256];
-#define tsd_key_create(key, destr) do { \
- int i; \
- for(i=0; i<256; i++) (*key)[i] = 0; \
-} while(0)
-#define tsd_setspecific(key, data) (key[(unsigned)thr_self() % 256] = (data))
-#define tsd_getspecific(key, vptr) (vptr = key[(unsigned)thr_self() % 256])
-
-#define thread_atfork(prepare, parent, child) do {} while(0)
-
-#elif USE_SPROC /* SGI sproc() threads */
-
-#include <sys/wait.h>
-#include <sys/types.h>
-#include <sys/prctl.h>
-#include <abi_mutex.h>
-
-typedef abilock_t mutex_t;
-
-#define mutex_init(m) init_lock(m)
-#define mutex_lock(m) (spin_lock(m), 0)
-#define mutex_trylock(m) acquire_lock(m)
-#define mutex_unlock(m) release_lock(m)
-
-typedef int tsd_key_t;
-int tsd_key_next;
-#define tsd_key_create(key, destr) ((*key) = tsd_key_next++)
-#define tsd_setspecific(key, data) (((void **)(&PRDA->usr_prda))[key] = data)
-#define tsd_getspecific(key, vptr) (vptr = ((void **)(&PRDA->usr_prda))[key])
-
-#define thread_atfork(prepare, parent, child) do {} while(0)
-
-#else /* no _LIBC or USE_... are defined */
-
-#define NO_THREADS
-
-#endif /* defined(_LIBC) */
-
-#ifdef NO_THREADS /* No threads, provide dummy macros */
-
-/* The mutex functions used to do absolutely nothing, i.e. lock,
- trylock and unlock would always just return 0. However, even
- without any concurrently active threads, a mutex can be used
- legitimately as an `in use' flag. To make the code that is
- protected by a mutex async-signal safe, these macros would have to
- be based on atomic test-and-set operations, for example. */
-typedef int mutex_t;
-
-#define mutex_init(m) (*(m) = 0)
-#define mutex_lock(m) ((*(m) = 1), 0)
-#define mutex_trylock(m) (*(m) ? 1 : ((*(m) = 1), 0))
-#define mutex_unlock(m) (*(m) = 0)
-
-typedef void *tsd_key_t;
-#define tsd_key_create(key, destr) do {} while(0)
-#define tsd_setspecific(key, data) ((key) = (data))
-#define tsd_getspecific(key, vptr) (vptr = (key))
-
-#define thread_atfork(prepare, parent, child) do {} while(0)
-
-#endif /* defined(NO_THREADS) */
-
-#ifndef atomic_full_barrier
-# define atomic_full_barrier() __asm ("" ::: "memory")
-#endif
-
-#ifndef atomic_read_barrier
-# define atomic_read_barrier() atomic_full_barrier ()
-#endif
-
-#ifndef atomic_write_barrier
-# define atomic_write_barrier() atomic_full_barrier ()
-#endif
-
-#endif /* !defined(_THREAD_M_H) */
--- /dev/null
+/* Basic platform-independent macro definitions for mutexes,
+ thread-specific data and parameters for malloc.
+ Copyright (C) 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
+ 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 _GENERIC_MALLOC_MACHINE_H
+#define _GENERIC_MALLOC_MACHINE_H
+
+#include <atomic.h>
+
+#ifndef mutex_init /* No threads, provide dummy macros */
+
+# define NO_THREADS
+
+/* The mutex functions used to do absolutely nothing, i.e. lock,
+ trylock and unlock would always just return 0. However, even
+ without any concurrently active threads, a mutex can be used
+ legitimately as an `in use' flag. To make the code that is
+ protected by a mutex async-signal safe, these macros would have to
+ be based on atomic test-and-set operations, for example. */
+typedef int mutex_t;
+
+# define mutex_init(m) (*(m) = 0)
+# define mutex_lock(m) ((*(m) = 1), 0)
+# define mutex_trylock(m) (*(m) ? 1 : ((*(m) = 1), 0))
+# define mutex_unlock(m) (*(m) = 0)
+
+typedef void *tsd_key_t;
+# define tsd_key_create(key, destr) do {} while(0)
+# define tsd_setspecific(key, data) ((key) = (data))
+# define tsd_getspecific(key, vptr) (vptr = (key))
+
+# define thread_atfork(prepare, parent, child) do {} while(0)
+
+#endif /* !defined mutex_init */
+
+#ifndef atomic_full_barrier
+# define atomic_full_barrier() __asm ("" ::: "memory")
+#endif
+
+#ifndef atomic_read_barrier
+# define atomic_read_barrier() atomic_full_barrier ()
+#endif
+
+#ifndef atomic_write_barrier
+# define atomic_write_barrier() atomic_full_barrier ()
+#endif
+
+#ifndef DEFAULT_TOP_PAD
+# define DEFAULT_TOP_PAD 131072
+#endif
+
+#endif /* !defined(_GENERIC_MALLOC_MACHINE_H) */
--- /dev/null
+/* Basic platform-independent macro definitions for mutexes,
+ thread-specific data and parameters for malloc.
+ Copyright (C) 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
+ 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 _MALLOC_MACHINE_H
+#define _MALLOC_MACHINE_H
+
+#undef thread_atfork_static
+
+#include <atomic.h>
+#include <bits/libc-lock.h>
+
+/* Assume hurd, with cthreads */
+
+/* Cthreads `mutex_t' is a pointer to a mutex, and malloc wants just the
+ mutex itself. */
+#undef mutex_t
+#define mutex_t struct mutex
+
+#undef mutex_init
+#define mutex_init(m) (__mutex_init(m), 0)
+
+#undef mutex_lock
+#define mutex_lock(m) (__mutex_lock(m), 0)
+
+#undef mutex_unlock
+#define mutex_unlock(m) (__mutex_unlock(m), 0)
+
+#define mutex_trylock(m) (!__mutex_trylock(m))
+
+#define thread_atfork(prepare, parent, child) do {} while(0)
+#define thread_atfork_static(prepare, parent, child) \
+ text_set_element(_hurd_fork_prepare_hook, prepare); \
+ text_set_element(_hurd_fork_parent_hook, parent); \
+ text_set_element(_hurd_fork_child_hook, child);
+
+/* No we're *not* using pthreads. */
+#define __pthread_initialize ((void (*)(void))0)
+
+#include <sysdeps/generic/malloc-machine.h>
+
+#endif /* !defined(_MALLOC_MACHINE_H) */
projects / external / glibc.git / commitdiff