_HeapFree

// C syntax 
#include <vmm.h>

ULONG EXTERNAL _HeapFree(ULONG hAddress, ULONG flags);

; Assembler syntax 
include vmm.inc

VMMCall _HeapFree, <hAddress, flags>

or      eax, eax            ; nonzero if freed, zero if error
jz      not_freed
 

Frees an existing memory block in the system heap. Uses EAX, ECX, EDX, and Flags.

• Returns a nonzero value in the EAX register if successful, zero otherwise.

hAddress

Address of the memory block to free. This address must have been previously returned by the _HeapAllocate or _HeapReAllocate service.

flags

Operation flags. Must be 0.

Although the system can usually recover from an attempt to free an invalid address, you should not rely on this.

See Also

_HeapAllocate, _HeapReAllocate