[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("00000002-0000-0000-C000-000000000046")]
interface IMalloc {
// Allocate a block of memory
// Return value: a pointer to the allocated memory block.
[PreserveSig]
IntPtr Alloc(
UInt32 cb); // Size, in bytes, of the memory block to be
// allocated.
// Changes the size of a previously allocated memory block.
// Return value: reallocated memory block
[PreserveSig]
IntPtr Realloc(
IntPtr pv, // Pointer to the memory block to be reallocated
UInt32 cb); // Size of the memory block, in bytes, to be
// reallocated.
// Free a previously allocated block of memory.
[PreserveSig]
void Free(
IntPtr pv); // Pointer to the memory block to be freed.
// This method returns the size, in bytes, of a memory block
// previously
// allocated with IMalloc::Alloc or IMalloc::Realloc.
// Return value: The size of the allocated memory block in bytes.
[PreserveSig]
UInt32 GetSize(
IntPtr pv); // Pointer to the memory block for which the size is
// requested.
// This method determines whether this allocator was used to allocate
// the specified block of memory.
// Return value: 1 - allocated 0 - not allocated by this IMalloc Instance.
[PreserveSig]
Int16 DidAlloc(
IntPtr pv); // Pointer to the memory block
// Minimizes the heap by releasing unused memory to the operating system.
[PreserveSig]
void HeapMinimize();
}