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/* The following functions are used to synchronize father and sons processes.
*
* create_sync_pipes: create pipes used for the synchronization. Must be done
* by father process before a fork.
*
* wait_son_startup: wait a son process to reach the "notify_startup" function.
*
* notify_startup: notify the father process a son has started its execution.
*/
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
/* fifo_name is used to create named pipe. NULL means anonymous pipe. */
#define PIPE_NAME NULL
int sync_pipe_create( int fd[], const char *pipe_name);
int sync_pipe_close(int fd[], const char *pipe_name);
int sync_pipe_wait( int fd[]);
int sync_pipe_notify( int fd[]);
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