mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-29 16:21:07 +00:00
a5df0318ef
* elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count): Define variable. * sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct rtld_global): Add _dl_thread_gscope_count member. * sysdeps/mach/hurd/tls.h: Include <atomic.h>. [!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG, THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros. * sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB. * sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/* Definitions for thread-local data handling. Hurd version.
|
|
Copyright (C) 2003-2018 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 _TLS_H
|
|
#define _TLS_H
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
# include <stddef.h>
|
|
# include <stdint.h>
|
|
# include <stdbool.h>
|
|
# include <sysdep.h>
|
|
# include <mach/mig_errors.h>
|
|
# include <mach.h>
|
|
# include <atomic.h>
|
|
|
|
|
|
/* This is the size of the initial TCB. */
|
|
# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
|
|
|
|
/* Alignment requirements for the initial TCB. */
|
|
# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
|
|
|
|
/* This is the size of the TCB. */
|
|
# define TLS_TCB_SIZE TLS_INIT_TCB_SIZE /* XXX */
|
|
|
|
/* Alignment requirements for the TCB. */
|
|
# define TLS_TCB_ALIGN TLS_INIT_TCB_ALIGN /* XXX */
|
|
|
|
|
|
/* Install the dtv pointer. The pointer passed is to the element with
|
|
index -1 which contain the length. */
|
|
# define INSTALL_DTV(descr, dtvp) \
|
|
((tcbhead_t *) (descr))->dtv = (dtvp) + 1
|
|
|
|
/* Return dtv of given thread descriptor. */
|
|
# define GET_DTV(descr) \
|
|
(((tcbhead_t *) (descr))->dtv)
|
|
|
|
/* Global scope switch support. */
|
|
#define THREAD_GSCOPE_IN_TCB 0
|
|
#define THREAD_GSCOPE_GLOBAL
|
|
#define THREAD_GSCOPE_SET_FLAG() \
|
|
atomic_exchange_and_add_acq (&GL(dl_thread_gscope_count), 1)
|
|
#define THREAD_GSCOPE_RESET_FLAG() \
|
|
do \
|
|
if (atomic_exchange_and_add_rel (&GL(dl_thread_gscope_count), -1) == 1) \
|
|
lll_wake (&GL(dl_thread_gscope_count), 0); \
|
|
while (0)
|
|
#define THREAD_GSCOPE_WAIT() \
|
|
do \
|
|
{ \
|
|
int count; \
|
|
atomic_write_barrier (); \
|
|
while ((count = GL(dl_thread_gscope_count))) \
|
|
lll_wait (&GL(dl_thread_gscope_count), count, 0); \
|
|
} \
|
|
while (0)
|
|
|
|
#endif /* !ASSEMBLER */
|
|
|
|
|
|
#endif /* tls.h */
|