#region 内存回收
[DllImport("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize")]
public static extern int SetProcessWorkingSetSize(IntPtr process, int minSize, int maxSize);
/// <summary>
/// 释放内存
/// </summary>
public static void ClearMemory()
{
GC.Collect();
GC.WaitForPendingFinalizers();
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -, -);
}
}
#endregion
在系统中使用 SetProcessWorkingSetSize方法做了一个测试,调用该方法后,占用内存从80M降到2M.(TaskManager观察的结果)按 照知秋一叶的说法,这样调整WorkingSet,将有可能导致缺页中断,严重影响性能。 但是从使用的情况来看,没有发现这样的现象
public Form1()
{
InitializeComponent(); //每1分钟 检查一次
System.Timers.Timer timer = new System.Timers.Timer( * );
timer.Elapsed += timer_Elapsed;
timer.Start();
} private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
//1 比较时间是否有效 HH:mm
DateTime starttime = e.SignalTime;
string time = ConfigurationManager.AppSettings["ClearMemory_PerdayTime"];//"05:00"
string dtNow = starttime.ToString("yyyy-MM-dd HH:mm");
DateTime dayDefine = DateTime.Parse(starttime.ToString("yyyy-MM-dd") + " " + time);
if (dayDefine.ToString("yyyy-MM-dd HH:mm") == dtNow)
{
//2 启动垃圾收集器
ClearMemory();
LogWarning(DateTime.Now.ToLongTimeString() + " :释放内存!");
}
}
注意,引用命名空间:using System.Runtime.InteropServices;