heap.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

/*
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
/*
 * $Id:
 * COPYRIGHT:        See COPYING in the top level directory
 * PROJECT:          ReactOS GDI32
 * PURPOSE:          
 * FILE:             lib/gdi32/misc/heap.c
 * PROGRAMER:        
 * REVISION HISTORY: 
 * NOTES:            
 */

#include "precomp.h"
#include <debug.h>

// global variables in a dll are process-global
HANDLE hProcessHeap = NULL;


PVOID
HEAP_alloc ( DWORD len )
{
  /* make sure hProcessHeap gets initialized by GdiProcessSetup before we get here */
  assert(hProcessHeap);
  return RtlAllocateHeap ( hProcessHeap, 0, len );
}

NTSTATUS
HEAP_strdupA2W ( LPWSTR* ppszW, LPCSTR lpszA )
{
  ULONG len;
  NTSTATUS Status;

  *ppszW = NULL;
  if ( !lpszA )
    return STATUS_SUCCESS;
  len = lstrlenA(lpszA);

  *ppszW = HEAP_alloc ( (len+1) * sizeof(WCHAR) );
  if ( !*ppszW )
    return STATUS_NO_MEMORY;
  Status = RtlMultiByteToUnicodeN ( *ppszW, len*sizeof(WCHAR), NULL, (PCHAR)lpszA, len );
  (*ppszW)[len] = L'\0';
  return Status;
}


VOID
HEAP_free ( LPVOID memory )
{
  /* make sure hProcessHeap gets initialized by GdiProcessSetup before we get here */
  assert(hProcessHeap);

  RtlFreeHeap ( hProcessHeap, 0, memory );
}