|
Packit |
6c4009 |
/* Definitions for thread-local data handling. Hurd version.
|
|
Packit |
6c4009 |
Copyright (C) 2003-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifndef _TLS_H
|
|
Packit |
6c4009 |
#define _TLS_H
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifndef __ASSEMBLER__
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
# include <stddef.h>
|
|
Packit |
6c4009 |
# include <stdint.h>
|
|
Packit |
6c4009 |
# include <stdbool.h>
|
|
Packit |
6c4009 |
# include <sysdep.h>
|
|
Packit |
6c4009 |
# include <mach/mig_errors.h>
|
|
Packit |
6c4009 |
# include <mach.h>
|
|
Packit |
6c4009 |
# include <atomic.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* This is the size of the initial TCB. */
|
|
Packit |
6c4009 |
# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Alignment requirements for the initial TCB. */
|
|
Packit |
6c4009 |
# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* This is the size of the TCB. */
|
|
Packit |
6c4009 |
# define TLS_TCB_SIZE TLS_INIT_TCB_SIZE /* XXX */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Alignment requirements for the TCB. */
|
|
Packit |
6c4009 |
# define TLS_TCB_ALIGN TLS_INIT_TCB_ALIGN /* XXX */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Install the dtv pointer. The pointer passed is to the element with
|
|
Packit |
6c4009 |
index -1 which contain the length. */
|
|
Packit |
6c4009 |
# define INSTALL_DTV(descr, dtvp) \
|
|
Packit |
6c4009 |
((tcbhead_t *) (descr))->dtv = (dtvp) + 1
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Return dtv of given thread descriptor. */
|
|
Packit |
6c4009 |
# define GET_DTV(descr) \
|
|
Packit |
6c4009 |
(((tcbhead_t *) (descr))->dtv)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Global scope switch support. */
|
|
Packit |
6c4009 |
#define THREAD_GSCOPE_IN_TCB 0
|
|
Packit |
6c4009 |
#define THREAD_GSCOPE_GLOBAL
|
|
Packit |
6c4009 |
#define THREAD_GSCOPE_SET_FLAG() \
|
|
Packit |
6c4009 |
atomic_exchange_and_add_acq (&GL(dl_thread_gscope_count), 1)
|
|
Packit |
6c4009 |
#define THREAD_GSCOPE_RESET_FLAG() \
|
|
Packit |
6c4009 |
do \
|
|
Packit |
6c4009 |
if (atomic_exchange_and_add_rel (&GL(dl_thread_gscope_count), -1) == 1) \
|
|
Packit |
6c4009 |
lll_wake (&GL(dl_thread_gscope_count), 0); \
|
|
Packit |
6c4009 |
while (0)
|
|
Packit |
6c4009 |
#define THREAD_GSCOPE_WAIT() \
|
|
Packit |
6c4009 |
do \
|
|
Packit |
6c4009 |
{ \
|
|
Packit |
6c4009 |
int count; \
|
|
Packit |
6c4009 |
atomic_write_barrier (); \
|
|
Packit |
6c4009 |
while ((count = GL(dl_thread_gscope_count))) \
|
|
Packit |
6c4009 |
lll_wait (&GL(dl_thread_gscope_count), count, 0); \
|
|
Packit |
6c4009 |
} \
|
|
Packit |
6c4009 |
while (0)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#endif /* !ASSEMBLER */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#endif /* tls.h */
|