Memory leak detection methods under Windows

Under Windows, you can use Visual C + + 's C Runtime Library (CRT) to detect memory leaks.

First, we insert this section of code in the first line of a. C or. cpp file:

#define _CRTDBG_MAP_ALLOC#include <crtdbg.h>

Insert the following code in main ():

int main() {        //开始的地方插入该语句    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);    //_CrtSetBreakAlloc(79);    //其它代码        //return前插入该语句    _CrtDumpMemoryLeaks();    return0;}

The output from Visual Studio is as follows:

C:\Temp\memleak\memleak.cpp(15) : {790x00441BA02long4142Object dump complete.

We can add _CrtSetBreakAlloc (79); To debug, it will break in the allocation call at the 79th time, and then the call stack will be able to find the ins and outs.

Memory leak detection methods under Windows