#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>

int count = 0;

void handler(int s)
{
	count++;
	printf( "SIGNAL: %i\tPID: %i\n", s, getpid() );
	fflush( stdout );
	return;
}

void forkme()
{
//	printf( "forking...\n" );
//	fflush( stdout );
	if( fork() == 0 )
	{
		sleep( 1 );
		printf( "child %i dies\n", getpid() );
		fflush( stdout );
		exit( 0 );
	}
//	printf( "forked\n" );
//	fflush( stdout );
	return;
}

int main(void)
{
	int i, k;
	signal( SIGCHLD, handler );
	for( i = 0; i < 30; i++ )
	{
		forkme();
	}
//	printf( "waiting... (pid %i)\n", getpid() );
//	fflush( stdout );
//	sleep( 5 );
//	printf( "waited! (pid %i)\n", getpid() );
//	fflush( stdout );
	k = 0;
	while( 1 )
	{
		if( k != count )
		{
			k = count;
			printf( "count %i\n", k );
			fflush( stdout );
		}
	}
	return( 0 );
}