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 */

#ifndef APR_SIGNAL_H
#define APR_SIGNAL_H
/**
 * @file apr_signal.h 
 * @brief APR Signal Handling
 */

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

#define APR_WANT_SIGNAL
#include "apr_want.h"


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

/**
 * @defgroup APR_Signal Signal Handling
 * @ingroup APR
 * @{
 */

#if APR_HAVE_SIGACTION

typedef void apr_sigfunc_t(int);

/* ### how to doc this? */
/**
 * Set the signal handler function for a given signal
 * @param signo The signal (eg... SIGWINCH)
 * @parm the function to get called
 */
APR_DECLARE(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
 */
APR_DECLARE(const char *) apr_signal_get_description(int signum);

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

/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* APR_SIGNAL_H */