获取进程内存信息 GetProcessMemoryInfo （p/invoke）

[StructLayout(LayoutKind.Sequential)]

public struct PPROCESS_MEMORY_COUNTERS

{

/// <summary>

/// 结构体大小

/// </summary>

public UInt32 cb;

/// <summary>

/// 缺页中断次数

/// </summary>

public UInt32 PageFaultCount;

/// <summary>

/// 使用内存高峰

/// </summary>

public UInt32 PeakWorkingSetSize;

/// <summary>

/// 当前使用的内存

/// </summary>

public UInt32 WorkingSetSize;

/// <summary>

/// 使用页面缓存池高峰

/// </summary>

public UInt32 QuotaPeakPagedPoolUsage;

/// <summary>

/// 使用页面缓存池

/// </summary>

public UInt32 QuotaPagedPoolUsage;

/// <summary>

/// 使用非分页缓存池高峰

/// </summary>

public UInt32 QuotaPeakNonPagedPoolUsage;

/// <summary>

/// 使用非分页缓存池

/// </summary>

public UInt32 QuotaNonPagedPoolUsage;

/// <summary>

/// 使用分页文件

/// </summary>

public UInt32 PagefileUsage;

/// <summary>

/// 使用分页文件的高峰

/// </summary>

public UInt32 PeakPagefileUsage;

}

/// <summary>

/// Retrieves the calling thread's last-error code value.

/// </summary>

/// <returns>The return value is the calling thread's last-error code.</returns>

[System.Runtime.InteropServices.DllImport("Kernel32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)]

internal static extern Int32 GetLastError();
/// <summary>

/// Retrieves information about the memory usage of the specified process.

/// </summary>

/// <param name="hProcess">A handle to the process. The handle must have the PROCESS_QUERY_INFORMATION or PROCESS_QUERY_LIMITED_INFORMATION access right and the PROCESS_VM_READ access right. </param>

/// <param name="lpCreationTime">A pointer to the PROCESS_MEMORY_COUNTERS or PROCESS_MEMORY_COUNTERS_EX structure that receives information about the memory usage of the process. </param>

/// <param name="cb">The size of the ppsmemCounters structure, in bytes. </param>

/// <returns>If the function succeeds, the return value is nonzero.</returns>

[System.Runtime.InteropServices.DllImport("Psapi.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true, EntryPoint = "GetProcessMemoryInfo")]

internal static extern int GetProcessMemoryInfo(IntPtr hProcess, out PPROCESS_MEMORY_COUNTERS ppsmemCounters, Int32 cb);

/// <summary>

/// Gets the memory information.

/// </summary>

/// <param name="errorCode">The error code.</param>

/// <returns></returns>

public static PPROCESS_MEMORY_COUNTERS GetMemoryInformation(out int errorCode)

{

errorCode = 0;

PPROCESS_MEMORY_COUNTERS memoryInfo;

if (NativeMethods.GetProcessMemoryInfo(HelpViewerProcess.Handle, out memoryInfo, System.Runtime.InteropServices.Marshal.SizeOf(typeof(PPROCESS_MEMORY_COUNTERS))) != 1)

{

errorCode = NativeMethods.GetLastError();

}

return memoryInfo;

}本文出自 “好了，是我” 博客，请务必保留此出处http://huangchaosuper.blog.51cto.com/5221102/887616