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/********************************************************************
* Description: rcs_exit.cc
* This module provides a portable way to make sure multiple
* functions are called before exiting.
* These functions should be written to take an int and return void.
*
* Derived from a work by Fred Proctor & Will Shackleford
*
* Author:
* License: LGPL Version 2
* System: Linux
*
* Copyright (c) 2004 All rights reserved.
*
* Last change:
********************************************************************/
/* Forward Function Prototypes */
#include "rcs_exit.hh"
#include "linklist.hh" // LinkedList
#include "rcs_print.hh" // rcs_print_error()
#include "timer.hh" // esleep()
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h> // exit()
#include <signal.h> // signal() , SIGINT
#ifdef __cplusplus
}
#endif
static LinkedList *exit_list = (LinkedList *) NULL;
struct RCS_EXIT_LIST_ENTRY {
long process_id;
void (*fptr) (int);
};
// NOTE --
// the GNU VxWorks C++ cross-compiler (g++68k) has a bug, that
// prevents me from passing a pointer to a function as the first
// argument of a function.
int attach_rcs_exit_list(void (*fptr) (int))
{
RCS_EXIT_LIST_ENTRY entry;
if (NULL == exit_list) {
exit_list = new LinkedList;
}
if (NULL == exit_list) {
rcs_print_error("attach_rcs_exit_list:: Out of Memory.\n");
return -1;
}
entry.process_id = 0;
entry.fptr = fptr;
return exit_list->store_at_tail(&entry, sizeof(entry), 1);
}
void rcs_cleanup(int code)
{
RCS_EXIT_LIST_ENTRY *entry;
long process_id = 0;
if (NULL == exit_list) {
return;
}
entry = (RCS_EXIT_LIST_ENTRY *) exit_list->get_head();
while (NULL != entry) {
if (entry->process_id == process_id && entry->fptr != NULL) {
entry->fptr(code);
}
entry = (RCS_EXIT_LIST_ENTRY *) exit_list->get_next();
}
if (exit_list->list_size == 0) {
delete exit_list;
exit_list = (LinkedList *) NULL;
}
}
static int rcs_ready_for_exit = 0;
static int rcs_exit_sig = 0;
static void rcs_exit_signal_handler(int sig)
{
rcs_ready_for_exit = 1;
rcs_exit_sig = sig;
}
void rcs_exit(int code)
{
rcs_cleanup(code);
if (code == -1) {
rcs_print_error("\n Errors Reported!!!\n Press ^C to exit.\n");
signal(SIGINT, rcs_exit_signal_handler);
int secs = 0;
while (!rcs_ready_for_exit && secs < 600) {
esleep(1.0);
secs++;
}
}
exit(code);
}
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