minix/kernel/misc.c

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2005-04-21 16:53:53 +02:00
/* This file contains a collection of miscellaneous procedures:
* panic abort MINIX due to a fatal error
* bad_assertion for debugging
* bad_compare for debugging
*
* Changes:
* Oct 04, 2004 moved panic() to this file (Jorrit N. Herder)
* Sep 30, 2004 removed mem_init(), env_parse to lib (Jorrit N. Herder)
*/
#include "kernel.h"
#include "assert.h"
#include <unistd.h>
#include <minix/com.h>
/*===========================================================================*
* panic *
*===========================================================================*/
PUBLIC void panic(s,n)
_CONST char *s;
int n;
{
/* The system has run aground of a fatal error. Terminate execution.
* If the panic originated in MM or FS, the string will be empty and the
* file system already syncked. If the panic originates in the kernel, we are
* kind of stuck.
*/
static int panicking = 0;
if (panicking ++) /* prevent recursive panics */
return;
if (s != NULL) {
kprintf("\nKernel panic: %s", karg(s));
if (n != NO_NUM) kprintf(" %d", n);
kprintf("\n",NO_ARG);
}
prepare_shutdown(RBT_PANIC);
}
#if !NDEBUG
/*=========================================================================*
* bad_assertion *
*=========================================================================*/
PUBLIC void bad_assertion(file, line, what)
char *file;
int line;
char *what;
{
kprintf("panic at %s", karg(file));
kprintf(" (line %d): ", line);
kprintf("assertion \"%s\" failed.\n", karg(what));
panic(NULL, NO_NUM);
}
/*=========================================================================*
* bad_compare *
*=========================================================================*/
PUBLIC void bad_compare(file, line, lhs, what, rhs)
char *file;
int line;
int lhs;
char *what;
int rhs;
{
kprintf("panic at %s", karg(file));
kprintf(" (line %d): ", line);
kprintf("compare (%d)", lhs);
kprintf(" %s ", karg(what));
kprintf("(%d) failed.\n", rhs);
panic(NULL, NO_NUM);
}
#endif /* !NDEBUG */