#include "espik_debug.h"

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

#ifdef __GLIBC__
#	include <execinfo.h>
#endif		/* __GLIBC__ */

#if _ESPIK_DEBUG_
#	include <signal.h>
#endif		/* _ESPIK_DEBUG_ */

inline void espik_debug_bt (int num)
{
#ifdef __GLIBC__
#	if _ESPIK_DEBUG_

	void*	array[128];
	size_t	size;
	char**	strings;
	size_t	i;

/*	if (!debug_bt) return; */

	fprintf(stderr, "\n***** Backtrace (Signal %d) *****\n", num);
	size = backtrace(array, 128);
	strings = backtrace_symbols(array, size);
	for (i = 0 ; i < size ; i++)
		fprintf(stderr, "%s\n", strings[i]);

	if (strings)
		free(strings);

#	endif	/* _ESPIK_DEBUG_ */
#endif	/* __GLIBC__ */

#ifndef __GLIBC__
	fprintf(stderr, "Your system doesn't have glibc. Backtraces disabled. But program receive signal %d.\n", num);
#endif	/* __GLIBC__ */
}

void espik_debug_init()
{
#if _ESPIK_DEBUG_
	struct sigaction sa;

	sa.sa_handler = espik_debug_bt;
	sigaction(SIGSEGV, &sa, (struct sigaction *)0);
	sigaction(SIGINT,  &sa, (struct sigaction *)0);
	sigaction(SIGKILL, &sa, (struct sigaction *)0);
#endif
}

void kill_me (short num)
{
	espik_debug_bt(num);
	exit (num);
}