150 lines
2.4 KiB
C++
150 lines
2.4 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997.
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//
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// File: N C M E M . C P P
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//
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// Contents: Common memory management routines.
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//
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// Notes:
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//
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// Author: shaunco 24 Mar 1997
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//
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//----------------------------------------------------------------------------
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#include <pch.h>
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#pragma hdrstop
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#include "ncdebug.h"
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#include "ncmem.h"
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// This global heap handle will be set to the process heap when the
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// first request to allocate memory through MemAlloc is made.
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//
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HANDLE g_hHeap;
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//+---------------------------------------------------------------------------
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//
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// Function: HrMalloc
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//
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// Purpose: HRESULT returning version of malloc.
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//
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// Arguments:
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// cb [in] Count of bytes to allocate.
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// ppv [out] Address of returned allocation.
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//
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// Returns: S_OK or E_OUTOFMEMORY;
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//
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// Author: shaunco 31 Mar 1998
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//
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// Notes: Free the returned buffer with free.
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//
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HRESULT
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HrMalloc (
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size_t cb,
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PVOID* ppv)
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{
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Assert (ppv);
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HRESULT hr = S_OK;
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*ppv = MemAlloc (cb);
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if (!*ppv)
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{
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hr = E_OUTOFMEMORY;
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}
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TraceHr (ttidError, FAL, hr, FALSE, "HrMalloc");
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return hr;
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}
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VOID*
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MemAlloc (
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size_t cb)
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{
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#ifdef USE_HEAP_ALLOC
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if (!g_hHeap)
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{
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g_hHeap = GetProcessHeap();
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}
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return HeapAlloc (g_hHeap, 0, cb);
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#else
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return malloc (cb);
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#endif
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}
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VOID*
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MemAllocRaiseException (
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size_t cb)
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{
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VOID* pv = MemAlloc (cb);
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if (!pv)
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{
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RaiseException (E_OUTOFMEMORY, 0, 0, NULL);
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}
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return pv;
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}
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VOID
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MemFree (
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VOID* pv)
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{
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#ifdef USE_HEAP_ALLOC
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if (!g_hHeap)
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{
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g_hHeap = GetProcessHeap();
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}
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HeapFree (g_hHeap, 0, pv);
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#else
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free (pv);
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#endif
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}
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//+---------------------------------------------------------------------------
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// CRT memory function overloads
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//
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const raiseexception_t raiseexception;
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VOID*
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__cdecl
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operator new (
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size_t cb,
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const raiseexception_t&)
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{
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Assert(FALSE);
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return MemAllocRaiseException (cb);
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}
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const extrabytes_t extrabytes;
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VOID*
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__cdecl
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operator new (
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size_t cb,
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const extrabytes_t&,
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size_t cbExtra)
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{
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return MemAlloc (cb + cbExtra);
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}
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VOID*
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__cdecl
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operator new (
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size_t cb)
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{
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return MemAlloc (cb);
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}
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VOID
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__cdecl
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operator delete (
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VOID* pv)
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{
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if (pv)
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{
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MemFree (pv);
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}
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}
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