Recent questions tagged Garbage

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garbage collection - Why does the java8 GC not collect for over 11 hours?

Context: 64 bit Oracle Java SE 1.8.0_20-b26 For over 11 hours, my running java8 app has been accumulating ... clean up the tenured generation ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - How does Java GC call finalize() method?

As far as I understand, GC starts with some set of initial objects (stack, static objects) and recursively ... when they are still alive? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Python: different behavior using gc module in interactive mode

I wanted to be able to get a tuple of references to any existing object instances of a class. What I came up ... gc.collect() function per se. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - How does PHP's 'unset' construct work internally?

Preface: I do know how 'unset' works in the userland, but I would like to find out how it works internally. ... the PHP source code. Thank you! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Java: does GarbageCollectorMBean.getCollectionTime return pause time or something else?

Oracle's javadoc for GarbageCollectorMBean.getCollectionTime says, "Returns the approximate accumulated collection elapsed ... threads? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Why won’t git further reduce the repository size?

I have a repository with only one commit that has a checked out size of 95M. However, I cannot get the .git ... git version 1.9.4.msysgit.0 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Life cycle of local Java objects created during a method call

In a method call, if I create an object during that call. When are those objects garbage collected? Are they ... of that method has completed. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Android - Bitmap and memory management?

I've seen in a lot of samples, that developers call recycle() on bitmap, and then set it to null. Why is ... ; bitmap.recycle(); bitmap = null; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - Destroying a struct object in C#?

I am a bit confused about the fact that in C# only the reference types get garbage collected. That means GC ... also occupy memory on stack ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - JavaScript: remove an event listener from within that listener?

I always wondered how clean is such approach - to remove an event listener from within that ... addEventListener, removeEventListener stuff. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

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garbage collection - How to count existing instances of a class in ruby?

Here's an idea from this question: Upon object creation, increment a class variable. When object gets collected, ... object # >> deleting object See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - What are the practical examples of reference cycles?

Garbage collectors have functionality to deal with reference cycles. As far, as I understand, this is necessary ... , arising in programming? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - c++11: what is its gc interface, and how to implement?

I was watching Bjarne Stroustrup's talk "The Essence of C++". In 44:26 he mentioned "C++11 specifies a ... sample codes to demonstrate it pls? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - c# finalizer throwing exception?

Quote from MSDN: If Finalize or an override of Finalize throws an exception, the runtime ignores the exception, ... or reserect the object :/ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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797 views

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garbage collection - c# finalizer throwing exception?

Quote from MSDN: If Finalize or an override of Finalize throws an exception, the runtime ignores the exception, ... or reserect the object :/ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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garbage collector in android 2.3

From the Google groups I came to know that android 2.3 is using concurrent garbage collector. From the source ... please help me soon in this See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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garbage collection - C# WeakReference object is NULL in finalizer although still strongly referenced

Hi I have code here where I don't understand why I hit the breakpoint (see comment). Is this a Microsoft bug of something I ... ************** } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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650 views

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garbage collection - In Go, when will a variable become unreachable?

Go 1.7 beta 1 was released this morning, here is the release notes draft of Go 1.7. A new function KeepAlive ... it is in its life scope? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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garbage collection - Duration of Excessive GC Time in "java.lang.OutOfMemoryError: GC overhead limit exceeded"

Occasionally, somewhere between once every 2 days to once every 2 weeks, my application crashes in a seemingly random ... the issue I'm solving. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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488 views

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garbage collection - How fast is the go 1.5 gc with terabytes of RAM?

Java cannot use terabytes of RAM because the GC pause is way too long (minutes). With the recent update to ... language with this much RAM now? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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684 views

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garbage collection - How to release http.Client in Go?

I built a http.Client for HTTP2 connection, what do I need to do to release the client and resource used? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

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garbage collection - Java Mission Control Heap Profile

I am playing with the new Java Mission Control Profiler that is coming with the Java 7u40 and I cannot ... no Object Statistics are collected. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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garbage collection - adding expando properties to a typed object at runtime in c#

Is there any way in .net to bind a dictionary of properties to an instance at runtime, i.e., as ... the key while allowing garbage collection? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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424 views

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garbage collection - How to cause soft references to be cleared in Java?

I have a cache which has soft references to the cached objects. I am trying to write a functional test for ... reference on my cached object? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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381 views

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garbage collection - Why is the maximum size of the Java heap fixed?

It is not possible to increase the maximum size of Java's heap after the VM has started. What are the ... by consuming all available memory? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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557 views

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garbage collection - How is an object marked as finalized in Java (so that the finalize method wouldn't be called the second time)?

The main question is in the topic but let me show my vision of finalization proccess in Java so that I can ... shouldn't be finalized again?) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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371 views

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garbage collection - How to get Java stacks when JVM can't reach a safepoint

We recently had a situation where one of our production JVMs would randomly freeze. The Java process was burning ... to reach a safepoint. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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352 views

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garbage collection - Java blocking issue: Why would JVM block threads in many different classes/methods?

Update: This looks like a memory issue. A 3.8 Gb Hprof file indicated that the JVM was dumping-its ... LogManager.getLogger(LogManager.java:198) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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