mem_free

SFL
Version 2.11

`mem_free_`

#include "sflmem.h"
void
mem_free_ (
    void *client_ptr,                   /*  Block of memory to free          */
    const char *filename,               /*  Name of source file making call  */
    size_t lineno                       /*  Line number in calling source    */
)

Synopsis

Releases memory previously allocated by mem alloc (), mem realloc (), or mem strdup (). Use the mem_free() macro to call this function! If the specified block was not correctly allocated, dumps the memory allocation list and exits. If you specify a null address, does nothing.

Source Code - (sflmem.c)

{
    MEMHDR
       *ptr;

    if (client_ptr == NULL)             /*  Do nothing if address is null    */
        return;

    /*  Check for valid block                                                */
    ptr = CLIENT_2_HDR (client_ptr);
    if (ptr-> tag != MEMTAG)
        mem_tag_err (ptr, filename, lineno);

#   if (defined (MEM_TRACE))
    trace ("%s (%ld): free=%p",
           filename? filename: "-", (long) lineno, ptr);
#   endif
#   if (defined (DEBUG))
    memset (client_ptr, 0, ptr-> size);
#   endif

    /*  Invalidate header                                                    */
    ptr-> tag = MEMUNTAG;
    mem_total -= ptr-> size;
    mem_free_count += 1;

    /*  Remove block from list, inlining code from list unlink()             */
    ((LIST *) ((LIST *) ptr)-> prev)-> next = ((LIST *) ptr)-> next;
    ((LIST *) ((LIST *) ptr)-> next)-> prev = ((LIST *) ptr)-> prev;

    free (ptr);
}

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