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//-----------------------------------------------------------------------------
// Name: win_mem_track.cpp
// Developer: Wolfire Games LLC
// Description:
// License: Read below
//-----------------------------------------------------------------------------
//
// Copyright 2022 Wolfire Games LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
#include "win_mem_track.h"
#include <Logging/logdata.h>
#include <Utility/assert.h>
bool mem_track_enable = false;
// Memory check functions adapted from Doom 3 source
#if defined(_DEBUG) && defined(_WIN32)
#define NOMINMAX
#include <Windows.h>
#include <crtdbg.h>
#include <cstdio>
#include <cassert>
static unsigned int debug_total_alloc = 0;
static unsigned int debug_total_alloc_count = 0;
static unsigned int debug_current_alloc = 0;
static unsigned int debug_current_alloc_count = 0;
static unsigned int debug_frame_alloc = 0;
static unsigned int debug_frame_alloc_count = 0;
typedef struct CrtMemBlockHeader {
struct _CrtMemBlockHeader *pBlockHeaderNext; // Pointer to the block allocated just before this one:
struct _CrtMemBlockHeader *pBlockHeaderPrev; // Pointer to the block allocated just after this one
char *szFileName; // File name
int nLine; // Line number
size_t nDataSize; // Size of user block
int nBlockUse; // Type of block
long lRequest; // Allocation number
byte gap[4]; // Buffer just before (lower than) the user's memory:
} CrtMemBlockHeader;
int AllocHook(int nAllocType, void *pvData, size_t nSize, int nBlockUse, long lRequest, const unsigned char *szFileName, int nLine) {
CrtMemBlockHeader *pHead;
byte *temp;
if (nBlockUse == _CRT_BLOCK) {
return (TRUE);
}
// get a pointer to memory block header
temp = (byte *)pvData;
temp -= 32;
pHead = (CrtMemBlockHeader *)temp;
switch (nAllocType) {
case _HOOK_ALLOC:
if (mem_track_enable) {
bool break_here = true;
}
debug_total_alloc += nSize;
debug_current_alloc += nSize;
debug_frame_alloc += nSize;
debug_total_alloc_count++;
debug_current_alloc_count++;
debug_frame_alloc_count++;
break;
case _HOOK_FREE:
LOG_ASSERT(pHead->gap[0] == 0xfd && pHead->gap[1] == 0xfd && pHead->gap[2] == 0xfd && pHead->gap[3] == 0xfd);
debug_current_alloc -= pHead->nDataSize;
debug_current_alloc_count--;
debug_total_alloc_count++;
debug_frame_alloc_count++;
break;
case _HOOK_REALLOC:
LOG_ASSERT(pHead->gap[0] == 0xfd && pHead->gap[1] == 0xfd && pHead->gap[2] == 0xfd && pHead->gap[3] == 0xfd);
debug_current_alloc -= pHead->nDataSize;
debug_total_alloc += nSize;
debug_current_alloc += nSize;
debug_frame_alloc += nSize;
debug_total_alloc_count++;
debug_current_alloc_count--;
debug_frame_alloc_count++;
break;
}
return (TRUE);
}
void WinMemTrack::PrintTotal() {
LOGI.Format("Total allocation %8dk in %d blocks\n", debug_total_alloc / 1024, debug_total_alloc_count);
LOGI.Format("Current allocation %8dk in %d blocks\n", debug_current_alloc / 1024, debug_current_alloc_count);
}
void WinMemTrack::PrintFrame() {
LOGI.Format("Frame: %8dk in %5d blocks\n", debug_frame_alloc / 1024, debug_frame_alloc_count);
debug_frame_alloc = 0;
debug_frame_alloc_count = 0;
}
void WinMemTrack::Attach() {
_CrtSetAllocHook(AllocHook);
}
#else
void WinMemTrack::PrintTotal() {}
void WinMemTrack::PrintFrame() {}
void WinMemTrack::Attach() {}
#endif
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