diff options
Diffstat (limited to 'malloc')
| -rw-r--r-- | malloc/Makefile | 1 | ||||
| -rw-r--r-- | malloc/malloc.c | 5 | ||||
| -rw-r--r-- | malloc/thread-m.h | 322 |
3 files changed, 3 insertions, 325 deletions
diff --git a/malloc/Makefile b/malloc/Makefile index cf65fdca4f..6c04518b39 100644 --- a/malloc/Makefile +++ b/malloc/Makefile @@ -56,7 +56,6 @@ aux := set-freeres thread-freeres include ../Makeconfig -CFLAGS-malloc.c += -DDEFAULT_TOP_PAD=131072 CPPFLAGS-memusagestat = -DNOT_IN_libc # The Perl script to analyze the output of the mtrace functions. diff --git a/malloc/malloc.c b/malloc/malloc.c index 1cb374df26..c26d6676aa 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -255,6 +255,8 @@ #include <sys/types.h> #endif +#include <malloc-machine.h> + #ifdef __cplusplus extern "C" { #endif @@ -1443,11 +1445,10 @@ int __posix_memalign(void **, size_t, size_t); #endif #ifdef __cplusplus -}; /* end of extern "C" */ +} /* end of extern "C" */ #endif #include <malloc.h> -#include "thread-m.h" #ifndef BOUNDED_N #define BOUNDED_N(ptr, sz) (ptr) diff --git a/malloc/thread-m.h b/malloc/thread-m.h deleted file mode 100644 index 1dcaed0514..0000000000 --- a/malloc/thread-m.h +++ /dev/null @@ -1,322 +0,0 @@ -/* 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) */ |