exit.c

来自「可以在ti tms320vc5402处理器上运行的ucos程序」· C语言 代码 · 共 50 行

/*****************************************************************************/
/*  EXIT.C v3.10                                                             */
/*  Copyright (c) 1995-1998 Texas Instruments Incorporated                   */
/*****************************************************************************/
//#include <stdlib.h>

#define MAX_FUN   32

static int    at_exit_count = 0;
static void (*at_exit_fun[MAX_FUN])();
void        (*_cleanup_ptr)(void) = 0; //NULL;

/****************************************************************************/
/* ABORT - ABNORMAL PROGRAM TERMINATION.  CURRENTLY JUST HALTS EXECUTION.   */
/****************************************************************************/
void abort(void)
{
   /*-------------------------------------------------------------------*/
   /* SET C$$EXIT LABEL SO THE DEBUGGER KNOWS WHEN THE C++ PROGRAM HAS  */
   /* COMPLETED.  THIS CAN BE REMOVED IF THE DEBUGGER IS NOT USED.      */
   /*-------------------------------------------------------------------*/
   asm("        .global C$$EXIT");
   asm("C$$EXIT: nop");

   for (;;);   /* SPINS FOREVER */
}


/****************************************************************************/
/* EXIT() - NORMAL PROGRAM TERMINATION.                                     */
/****************************************************************************/
void exit(int status)        
{
   register int i = at_exit_count;

   /*-------------------------------------------------------------------*/
   /* HANDLE FUNCTIONS REGISTERED THROUGH atexit().                     */
   /*-------------------------------------------------------------------*/
   while (i) (*at_exit_fun[--i])(); 

   /*-------------------------------------------------------------------*/
   /* IF FILES ARE POSSIBLY OPEN, _CLEANUP_PTR() WILL BE SETUP TO CLOSE */
   /* THEM.                                                             */
   /*-------------------------------------------------------------------*/
   if (_cleanup_ptr)  (*_cleanup_ptr)();

   abort();
}