[thirdparty/glibc.git] / sysdeps / nptl / malloc-machine.h

/* Basic platform-independent macro definitions for mutexes,
   thread-specific data and parameters for malloc.
   Copyright (C) 2003-2015 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) */
Commit	Line	Data
94ae6d75 UD	1	/* Basic platform-independent macro definitions for mutexes,
94ae6d75 UD	2	thread-specific data and parameters for malloc.
b168057a	3	Copyright (C) 2003-2015 Free Software Foundation, Inc.
94ae6d75 UD	4	This file is part of the GNU C Library.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	Lesser General Public License for more details.
	15
	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
94ae6d75 UD	19
	20	#ifndef _MALLOC_MACHINE_H
	21	#define _MALLOC_MACHINE_H
	22
	23	#undef thread_atfork_static
	24
	25	#include <atomic.h>
	26	#include <bits/libc-lock.h>
	27
	28	__libc_lock_define (typedef, mutex_t)
	29
94ae6d75 UD	30	#define mutex_init(m) __libc_lock_init (*(m))
	31	#define mutex_lock(m) __libc_lock_lock (*(m))
	32	#define mutex_trylock(m) __libc_lock_trylock (*(m))
	33	#define mutex_unlock(m) __libc_lock_unlock (*(m))
02d46fc4	34	#define MUTEX_INITIALIZER LLL_LOCK_INITIALIZER
94ae6d75 UD	35
	36	/* This is defined by newer gcc version unique for each module. */
	37	extern void *__dso_handle __attribute__ ((__weak__));
	38
	39	#include <fork.h>
	40
ad3371fb UD	41	#define ATFORK_MEM static struct fork_handler atfork_mem
ad3371fb UD	42
94ae6d75 UD	43	#ifdef SHARED
94ae6d75 UD	44	# define thread_atfork(prepare, parent, child) \
ad3371fb UD	45	atfork_mem.prepare_handler = prepare; \
	46	atfork_mem.parent_handler = parent; \
	47	atfork_mem.child_handler = child; \
	48	atfork_mem.dso_handle = __dso_handle; \
	49	atfork_mem.refcntr = 1; \
	50	__linkin_atfork (&atfork_mem)
94ae6d75 UD	51	#else
94ae6d75 UD	52	# define thread_atfork(prepare, parent, child) \
ad3371fb UD	53	atfork_mem.prepare_handler = prepare; \
	54	atfork_mem.parent_handler = parent; \
	55	atfork_mem.child_handler = child; \
	56	atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle; \
	57	atfork_mem.refcntr = 1; \
	58	__linkin_atfork (&atfork_mem)
94ae6d75 UD	59	#endif
	60
	61	/* thread specific data for glibc */
	62
	63	#include <bits/libc-tsd.h>
	64
	65	typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */
4b23f9bd	66	__libc_tsd_define (static, void , MALLOC) / declaration/common definition */
94ae6d75	67	#define tsd_key_create(key, destr) ((void) (key))
4b23f9bd JJ	68	#define tsd_setspecific(key, data) __libc_tsd_set (void *, MALLOC, (data))
4b23f9bd JJ	69	#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (void *, MALLOC))
94ae6d75 UD	70
	71	#include <sysdeps/generic/malloc-machine.h>
	72
	73	#endif /* !defined(_MALLOC_MACHINE_H) */