在引发OutOfMemoryException之前调用GC.Collect [英] Call GC.Collect Before Throwing OutOfMemoryException

问题描述

在抛出OutOfMemoryException之前有什么方法可以让GC.Collect()被调用吗?

Is there any way to get GC.Collect() to be called before throwing an OutOfMemoryException?

我想我正在寻找一种方法来执行以下代码流:

I suppose I'm looking for a way for it to do the following code flow:

Try to Allocate Memory
On Pass Return
Call GC.Collect()
Try to Allocate Memory
On Fail Throw New OutOfMemoryException()

我正在编写一个缓存实现，目前正在遇到内存异常，因此当前正在使用以下方法解决它:

I'm writing a caching implementation and currently I'm running into memory exceptions so currently to resolve it I am using:

If GC.GetTotalMemory(False) >= cache.CacheMemoryLimit + (100 * 1024 * 1024) Then
    // When Total Memory exceeds CacheMemoryLimit + 100MB
    GC.Collect()
End If

推荐答案

也许我不理解您的问题，但是您是否有可能只捕捉OutOfMemoryException引发并调用GC.Collect吗?将try/catch扔到一个循环中，直到尝试完成任务并确保它具有清理自身的能力为止.

Maybe I'm not understanding your question, but wouldn't it be possible for you to just catch OutOfMemoryException's thrown and call GC.Collect there? Toss the try/catch inside a loop that continues until you've finished your task and make sure it has the ability to clean itself up.

bool isFinished = false;
while (isFinished) {
  try {
    // do operations in here
  } catch (OutOfMemoryException oom) {
    GC.Collect();
  }

  // if you're done...
  isFinished = true;
}

请原谅使用C#伪代码代替VB，除非没有其他选择，否则我尽量不要在VB中工作.

Pardon the use of C# pseudo instead of VB, I try not to work in VB unless I have no choice.

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