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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief POSIX Signals Support
*
* This include file defines internal information about POSIX signals.
*/
/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTEMS_POSIX_PSIGNALIMPL_H
#define _RTEMS_POSIX_PSIGNALIMPL_H
/**
* @defgroup POSIX_SIGNALS POSIX Signals Support
*
* @ingroup POSIXAPI
*
* @brief Internal Information about POSIX Signals
*
*/
/**@{**/
#include <rtems/posix/psignal.h>
#include <rtems/posix/pthread.h>
#include <rtems/posix/sigset.h>
#include <rtems/score/isrlock.h>
#include <rtems/score/percpu.h>
#include <rtems/score/threadqimpl.h>
#define POSIX_SIGNALS_TQ_OPERATIONS &_Thread_queue_Operations_FIFO
#define _States_Is_interruptible_signal( _states ) \
( ((_states) & \
(STATES_WAITING_FOR_SIGNAL|STATES_INTERRUPTIBLE_BY_SIGNAL)) == \
(STATES_WAITING_FOR_SIGNAL|STATES_INTERRUPTIBLE_BY_SIGNAL))
#define SIGACTION_TERMINATE \
{ 0, SIGNAL_ALL_MASK, {_POSIX_signals_Abnormal_termination_handler} }
#define SIGACTION_IGNORE \
{ 0, SIGNAL_ALL_MASK, {SIG_IGN} }
#define SIGACTION_STOP \
{ 0, SIGNAL_ALL_MASK, {_POSIX_signals_Stop_handler} }
#define SIGACTION_CONTINUE \
{ 0, SIGNAL_ALL_MASK, {_POSIX_signals_Continue_handler} }
#define SIG_ARRAY_MAX (SIGRTMAX + 1)
/*
* Variables
*/
extern sigset_t _POSIX_signals_Pending;
extern const struct sigaction _POSIX_signals_Default_vectors[ SIG_ARRAY_MAX ];
extern struct sigaction _POSIX_signals_Vectors[ SIG_ARRAY_MAX ];
extern Thread_queue_Control _POSIX_signals_Wait_queue;
extern Chain_Control _POSIX_signals_Inactive_siginfo;
extern Chain_Control _POSIX_signals_Siginfo[ SIG_ARRAY_MAX ];
/*
* Internal routines
*/
RTEMS_INLINE_ROUTINE void _POSIX_signals_Acquire(
Thread_queue_Context *queue_context
)
{
_Thread_queue_Acquire( &_POSIX_signals_Wait_queue, queue_context );
}
RTEMS_INLINE_ROUTINE void _POSIX_signals_Release(
Thread_queue_Context *queue_context
)
{
_Thread_queue_Release( &_POSIX_signals_Wait_queue, queue_context );
}
/**
* @brief Unlock POSIX signals thread.
*/
bool _POSIX_signals_Unblock_thread(
Thread_Control *the_thread,
int signo,
siginfo_t *info
);
/**
* @brief Clear POSIX signals.
*/
bool _POSIX_signals_Clear_signals(
POSIX_API_Control *api,
int signo,
siginfo_t *info,
bool is_global,
bool check_blocked,
bool do_signals_acquire_release
);
int _POSIX_signals_Send(
pid_t pid,
int sig,
const union sigval *value
);
/**
* @brief Set POSIX process signals.
*/
void _POSIX_signals_Set_process_signals(
sigset_t mask
);
void _POSIX_signals_Clear_process_signals(
int signo
);
/*
* Default signal handlers
*/
#define _POSIX_signals_Stop_handler NULL
#define _POSIX_signals_Continue_handler NULL
void _POSIX_signals_Abnormal_termination_handler( int signo );
/** @} */
#endif
/* end of file */
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