如何在C ++中使用GetProcessMemoryInfo？ [英] How to use GetProcessMemoryInfo in C++?

问题描述

我试图在Windows 7 32上的C ++应用程序中使用 GetProcessMemoryInfo 的 psapi.h

我按照一些教程，我做了类似的：

  PPROCESS_MEMORY_COUNTERS pMemCountr; 
 
 pMemCountr = new PROCESS_MEMORY_COUNTERS（）; 
 bool result = GetProcessMemoryInfo（GetCurrentProcess（），
 pMemCountr，
 sizeof（PPROCESS_MEMORY_COUNTERS））; 
  

问题是我总是从执行 GetProcessMemoryInfo（）方法。

<$ p

$ p> sizeof（PPROCESS_MEMORY_COUNTERS）


产生 PPROCESS_MEMORY_COUNTERS 这是一个 PROCESS_MEMORY_COUNTERS * 类型指针（注意在开始时注意双 P ）。

你想要的是

  sizeof（PROCESS_MEMORY_COUNTERS）
  

此外，如果没有 new here：

  PROCESS_MEMORY_COUNTERS memCounter; 
 bool result = GetProcessMemoryInfo（GetCurrentProcess（），
& memCounter，
 sizeof（memCounter））; 
  

I'm trying to use the function GetProcessMemoryInfo of psapi.h inside a C++ application on Windows 7 32-bit.

I followed some tutorial and I did something like:

PPROCESS_MEMORY_COUNTERS pMemCountr;

pMemCountr = new PROCESS_MEMORY_COUNTERS();
bool result = GetProcessMemoryInfo(GetCurrentProcess(),
                                   pMemCountr,
                                   sizeof(PPROCESS_MEMORY_COUNTERS));

The problem is that i always obtain "false" from the execution of the GetProcessMemoryInfo() method. What am I doing wrong here?

解决方案

The problem is

sizeof(PPROCESS_MEMORY_COUNTERS)

yields the size of PPROCESS_MEMORY_COUNTERS which is a PROCESS_MEMORY_COUNTERS* type pointer (note double P in the beginning).

What you want is

sizeof(PROCESS_MEMORY_COUNTERS)

Also you'll be much better off without new here:

PROCESS_MEMORY_COUNTERS memCounter;
bool result = GetProcessMemoryInfo(GetCurrentProcess(),
                                   &memCounter,
                                   sizeof( memCounter ));

这篇关于如何在C ++中使用GetProcessMemoryInfo？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！