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glibc/sysdeps/nptl/malloc-machine.h
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/* Basic platform-independent macro definitions for mutexes, | |
thread-specific data and parameters for malloc. | |
Copyright (C) 2003-2014 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, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifndef _MALLOC_MACHINE_H | |
#define _MALLOC_MACHINE_H | |
#undef thread_atfork_static | |
#include <atomic.h> | |
#include <bits/libc-lock.h> | |
__libc_lock_define (typedef, mutex_t) | |
#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)) | |
#define MUTEX_INITIALIZER LLL_LOCK_INITIALIZER | |
/* This is defined by newer gcc version unique for each module. */ | |
extern void *__dso_handle __attribute__ ((__weak__)); | |
#include <fork.h> | |
#define ATFORK_MEM static struct fork_handler atfork_mem | |
#ifdef SHARED | |
# define thread_atfork(prepare, parent, child) \ | |
atfork_mem.prepare_handler = prepare; \ | |
atfork_mem.parent_handler = parent; \ | |
atfork_mem.child_handler = child; \ | |
atfork_mem.dso_handle = __dso_handle; \ | |
atfork_mem.refcntr = 1; \ | |
__linkin_atfork (&atfork_mem) | |
#else | |
# define thread_atfork(prepare, parent, child) \ | |
atfork_mem.prepare_handler = prepare; \ | |
atfork_mem.parent_handler = parent; \ | |
atfork_mem.child_handler = child; \ | |
atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle; \ | |
atfork_mem.refcntr = 1; \ | |
__linkin_atfork (&atfork_mem) | |
#endif | |
/* 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, void *, MALLOC) /* declaration/common definition */ | |
#define tsd_key_create(key, destr) ((void) (key)) | |
#define tsd_setspecific(key, data) __libc_tsd_set (void *, MALLOC, (data)) | |
#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (void *, MALLOC)) | |
#include <sysdeps/generic/malloc-machine.h> | |
#endif /* !defined(_MALLOC_MACHINE_H) */ |