Recent questions tagged Memory

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memory - Increasing PHP memory_limit. At what point does it become insane?

In a system I am currently working on, there is one process that loads large amount of data into an array for ... ? and what were the solutions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - How to deal with bad_alloc in C++?

There is a method called foo that sometimes returns the following error: terminate called after throwing an instance of ... bad_alloc in C++? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - How to dispose a class in .net?

The .NET garbage collector will eventually free up memory, but what if you want that memory back immediately? ... and objects in MyClass? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - How do cache lines work?

I understand that the processor brings data into the cache via cache lines, which - for instance, on my Atom processor ... above). Which is it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - gfortran for dummies: What does mcmodel=medium do exactly?

I have some code that is giving me relocation errors when compiling, below is an example which illustrates the ... or less equivalent ... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Is there garbage collection in PHP?

I know that in PHP you don't have to free memory. Is it reached by garbage collector? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - What is an "internal address" in Java?

In the Javadoc for Object.hashCode() it states As much as is reasonably practical, the hashCode method ... 2.0183116992481205 times expected. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Why / when to use `intptr_t` for type-casting in C?

I have a question regarding using intptr_t vs. long int. I've observed that incrementing memory addresses (e.g ... they that prescient? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - What's the relationship between "a" heap and "the" heap?

A heap is a tree data structure where higher levels of the tree always contain greater (or lesser, if it's set ... have to do with the other? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory leaks - Circular references in Javascript / Garbage collector

Can somebody explain in detail how Javascript engines deal with circular references ? Is there a big difference ... on constellations like this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Python object deleting itself

Why won't this work? I'm trying to make an instance of a class delete itself. >>> class A(): def ... > a <__main__.A instance at 0x01F23170> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - How do I release a CGImageRef in iOS

I am writing this method to calculate the average R,G,B values of an image. The following method takes a ... I release the CGImageRef? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - Decoding bitmaps in Android with the right size

I decode bitmaps from the SD card using BitmapFactory.decodeFile. Sometimes the bitmaps are bigger than what the ... (filePath, resample); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - How to determine maximum stack usage?

What methods are available for determining the optimum stack size for embedded/memory constrained system? If it's ... using a JTAG debugger. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - Automatic array allocation upon assignment in Fortran

We recently discovered we were making an assignment to an unallocated array in Fortran. The GNU gfortran compiler didn' ... for the above code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - In C, do braces act as a stack frame?

If I create a variable within a new set of curly braces, is that variable popped off the stack on the ... memory during the code that takes a while section? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - What is the default max heap size (-Xmx) in Java 8?

In the oracle documentation I found: -Xmxsize Specifies the maximum size (in bytes) of the memory ... configuration. What does system configuration mean? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - When should I use malloc in C and when don't I?

I understand how malloc() works. My question is, I'll see things like this: #define A_MEGABYTE (1024 * ... declaring/initializing the values you need to retain? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - MATLAB's Garbage Collector?

What is your mental model of it? How is it implemented? Which strengths and weaknesses does it have? ... itself when implementing linked list or MVC pattern. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - What is the difference between "new" and "malloc" and "calloc" in C++?

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory leaks - How to use valgrind with python?

I am trying to memcheck a C python extension I am writing, but I'm having trouble setting up valgrind to ... that doesn't leak and get clean valgrind output? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - Circular References in Java

Given an aggregation of class instances which refer to each other in a complex, circular, fashion: is it possible ... to see if anyone has found any exceptions. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Is there a reason to call delete in C++ when a program is exiting anyway?

In my C++ main function, for example, if I had a pointer to a variable which uses heap memory (as ... question, which also talks about the C++ destructor. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory layout C++ objects

Closed. This question needs to be more focused. It is not currently accepting answers. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Is there a way to lower Java heap when not in use?

I'm working on a Java application at the moment and working to optimize its memory usage. I'm following the ... least another hour. Is this possible? Thanks. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - When are objects garbage collected in python?

When are objects garbage collected in python? When is the memory released and does the collection impact performance? Can ... the gc algorithm and if so how? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory - How does a "stack overflow" occur and how do you prevent it?

How does a stack overflow occur and what are the best ways to make sure it doesn't happen, or ways to ... , but other examples would be interesting as well? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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memory management - Find out the size of a .NET object

I'm trying to find out how much memory my objects take to see how many of them are ending up on the ... or are there overheads for methods, properties, etc.? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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