reactos/dll/win32/psapi/malloc.c

   1 /* $Id$
   2  */
   3 /*
   4  * COPYRIGHT:   None
   5  * LICENSE:     Public domain
   6  * PROJECT:     ReactOS system libraries
   7  * FILE:        reactos/lib/psapi/misc/malloc.c
   8  * PURPOSE:     Memory allocator for PSAPI
   9  * PROGRAMMER:  KJK::Hyperion <noog@libero.it>
  10  * UPDATE HISTORY:
  11  *              10/06/2002: Created
  12  *              12/02/2003: malloc and free renamed to PsaiMalloc and PsaiFree,
  13  *                          for better reusability
  14  */
  15
  16 #include "precomp.h"
  17
  18 #define NDEBUG
  19 #include <debug.h>
  20
  21 PVOID
  22 WINAPI
  23 MemAlloc(IN HANDLE Heap,
  24          IN PVOID Ptr,
  25          IN ULONG Size)
  26 {
  27   PVOID pBuf = NULL;
  28
  29   if(Size == 0 && Ptr == NULL)
  30   {
  31     return NULL;
  32   }
  33
  34   if(Heap == NULL)
  35   {
  36     Heap = NtCurrentPeb()->ProcessHeap;
  37   }
  38
  39   if(Size > 0)
  40   {
  41     if(Ptr == NULL)
  42       /* malloc */
  43       pBuf = RtlAllocateHeap(Heap, 0, Size);
  44     else
  45       /* realloc */
  46       pBuf = RtlReAllocateHeap(Heap, 0, Ptr, Size);
  47   }
  48   else
  49     /* free */
  50     RtlFreeHeap(Heap, 0, Ptr);
  51
  52   return pBuf;
  53 }
  54
  55 void *PsaiMalloc(SIZE_T size)
  56 {
  57  return MemAlloc(NULL, NULL, size);
  58 }
  59
  60 void *PsaiRealloc(void *ptr, SIZE_T size)
  61 {
  62  return MemAlloc(NULL, ptr, size);
  63 }
  64
  65 void PsaiFree(void *ptr)
  66 {
  67  MemAlloc(NULL, ptr, 0);
  68 }
  69
  70 /* EOF */
  71