Function xmlMemFree

ThirdParty/libxml2/vtklibxml2/xmlmemory.c:201–230

* xmlMemFree: * @ptr: the memory block pointer * * a free() equivalent, with error checking. */

 * a free() equivalent, with error checking.
 */
void
xmlMemFree(void *ptr)
{
    MEMHDR *p;

    if (ptr == NULL)
        return;

    if (ptr == (void *) -1) {
        fprintf(stderr, "xmlMemFree: Pointer from freed area\n");
        return;
    }

    p = CLIENT_2_HDR(ptr);
    if (p->mh_tag != MEMTAG) {
        fprintf(stderr, "xmlMemFree: Tag error\n");
        return;
    }
    p->mh_tag = ~MEMTAG;
    memset(ptr, -1, p->mh_size);

    xmlMutexLock(&xmlMemMutex);
    debugMemSize -= p->mh_size;
    debugMemBlocks--;
    xmlMutexUnlock(&xmlMemMutex);

    free(p);

    return;
}

/**
 * xmlMemStrdupLoc: