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/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * 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.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

#ifndef APR_SIGNAL_H
#define APR_SIGNAL_H

#include "apr.h"
#include "apr_pools.h"

#define APR_WANT_SIGNAL
#include "apr_want.h"


#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/**
 * @package APR signal handling
 */

#if APR_HAVE_SIGACTION

typedef void apr_sigfunc_t(int);

/* ### how to doc this? */
apr_sigfunc_t *apr_signal(int signo, apr_sigfunc_t * func);

#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((apr_sigfunc_t *) -1)
#endif

#else /* !APR_HAVE_SIGACTION */
#define apr_signal(a, b) signal(a, b)
#endif


/**
 * Get the description for a specific signal number
 * @param signum The signal number
 * @return The description of the signal
 * @deffunc const char *apr_signal_get_description(int signum)
 */
const char *apr_signal_get_description(int signum);

/**
 * APR-private function for initializing the signal package
 * @param pglobal The internal, global pool
 * @deffunc apr_signal_init(apr_pool_t *pglobal)
 */
void apr_signal_init(apr_pool_t *pglobal);

#endif /* APR_SIGNAL_H */