windows 内存分配回收检查工具

2024-09-20 00:58:43

LeakDiag是微软一款检测memory leak的工具，使用比较简单

首先去下载一个ftp://ftp.microsoft.com/PSS/Tools/Developer%20Support%20Tools/LeakDiag/

安装好，默认是在c:\leakdiag

然后写一个测试程序来测试

#include <stdio.h>
#include <windows.h>

int main()
{
    while(1)
    {
        char *c = new char[10];
        printf("%s",c);
        Sleep(1000);
    }
    return 0;
}

在LeakDiag中选择aaa.exe
然后选择Windows Heap Allocator来跟踪heap的使用，按start开始，等一会按log，然后再stop
会在c:\leakdiag\Logs下面生成一个log

关键的部分是

<LEAKS ver="1.25.28.2201">
<STACK numallocs="05" size="048" totalsize="0240">
<STACKSTATS>
<SIZESTAT size="048" numallocs="05"/>
<HEAPSTAT handle="340000" numallocs="05"/>
</STACKSTATS>
<FRAME num="0" dll="aaa.exe" function="" filename="" line="" addr="0x407a72" offset="0x00007A72" />
<FRAME num="1" dll="aaa.exe" function="" filename="" line="" addr="0x402ff2" offset="0x00002FF2" />
<FRAME num="2" dll="aaa.exe" function="" filename="" line="" addr="0x402df9" offset="0x00002DF9" />
<FRAME num="3" dll="aaa.exe" function="" filename="" line="" addr="0x402dd6" offset="0x00002DD6" />
<FRAME num="4" dll="aaa.exe" function="" filename="" line="" addr="0x40112f" offset="0x0000112F" />
<FRAME num="5" dll="aaa.exe" function="" filename="" line="" addr="0x401038" offset="0x00001038" />
<FRAME num="6" dll="aaa.exe" function="" filename="" line="" addr="0x401269" offset="0x00001269" />
<FRAME num="7" dll="KERNEL32.dll" function ="GetSortTablesFileInfo" offset="0xC" filename="" line="" addr="0x7C5989D5" />
<STACKID>00524008</STACKID>
</STACK>
</LEAKS>

其中numallocs是分配的次数,size是每次分配的大小，frame则是leak的时候的call stack
这里的stack只显示了binary,是因为symbol没有配好

把对应的pdb文件路径加到[Tools]-[Option]-Symbol search path，就能得到

<LEAKS ver="1.25.28.2201">
<STACK numallocs="06" size="048" totalsize="0288">
<STACKSTATS>
<SIZESTAT size="048" numallocs="06"/>
<HEAPSTAT handle="340000" numallocs="06"/>
</STACKSTATS>
<FRAME num="0" dll="aaa.exe" function ="_heap_alloc_base" offset="0xC2" filename="malloc.c" line="200" addr="0x407A72" />
<FRAME num="1" dll="aaa.exe" function ="_heap_alloc_dbg" offset="0x1A2" filename="dbgheap.c" line="378" addr="0x402FF2" />
<FRAME num="2" dll="aaa.exe" function ="_nh_malloc_dbg" offset="0x19" filename="dbgheap.c" line="248" addr="0x402DF9" />
<FRAME num="3" dll="aaa.exe" function ="_nh_malloc" offset="0x16" filename="dbgheap.c" line="197" addr="0x402DD6" />
<FRAME num="4" dll="aaa.exe" function ="operator new" offset="0xF" filename="new.cpp" line="24" addr="0x40112F" />
<FRAME num="5" dll="aaa.exe" function ="main" offset="0x28" filename="D:\Test\aaa\test.cpp" line="8" addr="0x401038" />
<FRAME num="6" dll="aaa.exe" function ="mainCRTStartup" offset="0xE9" filename="crt0.c" line="206" addr="0x401269" />
<STACKID>00524008</STACKID>
</STACK>
</LEAKS>

由test.cpp line 8引起的memory leak.

BTW: 据说有一个tool叫LDParser来分析leakdiag生成的log,哪位大侠有，希望提供一下，谢谢！

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