heapcheck

De RAD Studio
Aller à : navigation, rechercher

Remonter à Alloc.h - Index


Header File

alloc.h

Category

Memory Routines

Prototype

int heapcheck(void);

Description

Checks and verifies the heap.

heapcheck walks through the heap and examines each block, checking its pointers, size, and other critical attributes.

Return Value

The return value is less than 0 for an error and greater than 0 for success. The return values and their meaning are as follows:

_HEAPCORRUPT

Heap has been corrupted

_HEAPEMPTY

No heap

_HEAPOK

Heap is verified



Example



 #include <stdio.h>
 #include <alloc.h>
 #define NUM_PTRS  10
 #define NUM_BYTES 16
 int main(void)
 {
    char *array[ NUM_PTRS ];
    int i;
    for( i = 0; i < NUM_PTRS; i++ )
       array[ i ] = (char *) malloc( NUM_BYTES );
    for( i = 0; i < NUM_PTRS; i += 2 )
       free( array[ i ] );
    if( heapcheck() == _HEAPCORRUPT )
       printf( "Heap is corrupted.\n" );
    else
       printf( "Heap is OK.\n" );
    return 0;
 }



Portability



POSIX Win32 ANSI C ANSI C++

+