mark-and-sweep | 易学教程

How does V8 manage its heap?

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问题 I know when V8's Garbage Collection is working, it will trace from GC's root so that unreachable objects will be marked and then be swept. My question is how GC traverses traverse those objects? There must be a data structure to store all objects reachable or unreachable. Bitmap? Linked table? BTW, does JVM do the same? 回答1: AllenShow, Google's V8 Heap is organized into a couple of different spaces. There's a great post, "A tour of V8: Garbage Collection" which explains how the V8 heap is

Sweep Line Algorithm - Implementation for 1D plane

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问题 The problem is simple, There is some given 1D lines on a plane. We need to find the total size of space having at least one line. Let me discuss this with an example image- This may a case . Or This may be a case or anything like this. I know it is a basic problem of Sweep Line Algorithm. But there is no proper document in the internet for it to understand properly. The one best I have is a blog of Top Coder and that is here. But it is not clear how to implement it or how may be the

Sweep Line Algorithm - Implementation for 1D plane

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The problem is simple, There is some given 1D lines on a plane. We need to find the total size of space having at least one line. Let me discuss this with an example image- This may a case . Or This may be a case or anything like this. I know it is a basic problem of Sweep Line Algorithm . But there is no proper document in the internet for it to understand properly. The one best I have is a blog of Top Coder and that is here . But it is not clear how to implement it or how may be the simulation. If I want, we can do it in O(n^2) with 2 loops, but I can't realize how would be the procedure. Or

“abort preclean due to time” in Concurrent Mark & Sweep

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I'm getting "abort preclean due to time" when running Concurrent Mark & Sweep in Java 6. What does it mean? Is the GC really halting in the middle before it did any real work? reccles Check out the section MaxAbortablePrecleanTime in Masamitsu's blog . This will give you a better idea about what the preclean phase is doing. Better than i'm willing to type out ;) 来源： https://stackoverflow.com/questions/1834501/abort-preclean-due-to-time-in-concurrent-mark-sweep

“abort preclean due to time” in Concurrent Mark & Sweep

阅读更多关于 “abort preclean due to time” in Concurrent Mark & Sweep

问题 I'm getting "abort preclean due to time" when running Concurrent Mark & Sweep in Java 6. What does it mean? Is the GC really halting in the middle before it did any real work? 回答1: Check out the section MaxAbortablePrecleanTime in Masamitsu's blog. This will give you a better idea about what the preclean phase is doing. Better than i'm willing to type out ;) 来源： https://stackoverflow.com/questions/1834501/abort-preclean-due-to-time-in-concurrent-mark-sweep