klish/lub/heap/heap_stop_here.c

#include <stdio.h>

#include "private.h"
#include "context.h"

/* 
 * This global variable is used to control error output when 
 * lub_heap_stop_here is called
 */
int lub_heap_verbose_errors = 0;

static const char *status_names[] = {
	"LUB_HEAP_OK",
	"LUB_HEAP_FAILED",
	"LUB_HEAP_DOUBLE_FREE",
	"LUB_HEAP_CORRUPTED",
	"LUB_HEAP_INVALID_POINTER"
};

/*--------------------------------------------------------- */
void
lub_heap_stop_here(lub_heap_status_t status, char *old_ptr, size_t new_size)
{
	/* This is provided as a debug aid */
	status = status;
	old_ptr = old_ptr;
	new_size = new_size;

	if (lub_heap_verbose_errors) {
		switch (status) {
		case LUB_HEAP_OK:
		case LUB_HEAP_FAILED:
			{
				/* this is normal */
				break;
			}
		case LUB_HEAP_DOUBLE_FREE:
		case LUB_HEAP_CORRUPTED:
		case LUB_HEAP_INVALID_POINTER:
			{
				/* obtain the backtrace of the stack */
				stackframe_t frame;
				long address;
				int i;
				lub_heap__get_stackframe(&frame, MAX_BACKTRACE);
				/* and output it */
				printf("lub_heap_stop_here(%s,%p,%" SIZE_FMT
				       ")\n", status_names[status], old_ptr,
				       new_size);
				for (i = 0;
				     (address = (long)frame.backtrace[i]);
				     i++) {
					lub_heap_symShow(address);
					printf("\n");
				}
			}
		}
	}
}

/*--------------------------------------------------------- */