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/* sigstack, sigaltstack definitions.
Copyright (C) 1998-2016 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 _SIGNAL_H
# error "Never include this file directly. Use <signal.h> instead"
#endif
/* Structure describing a signal stack (obsolete). */
struct sigstack
{
__ptr_t ss_sp; /* Signal stack pointer. */
int ss_onstack; /* Nonzero if executing on this stack. */
};
/* Alternate, preferred interface. */
typedef struct sigaltstack
{
__ptr_t ss_sp;
size_t ss_size;
int ss_flags;
} stack_t;
/* Possible values for `ss_flags.'. */
enum
{
SS_ONSTACK = 0x0001,
#define SS_ONSTACK SS_ONSTACK
SS_DISABLE = 0x0004
#define SS_DISABLE SS_DISABLE
};
/* Minumum stack size for a signal handler. */
#define MINSIGSTKSZ 8192
/* System default stack size. */
#define SIGSTKSZ (MINSIGSTKSZ + 32768)
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