Any modern operating system will clean up everything after a process terminates, but it’s generally not a good practice to rely on this. It depends on the program you are writing. If it’s just a command line tool that runs and terminates quickly, you may not bother cleaning up. But be aware that it is … Read more
File size isn’t a good measure for workbook files when working with PHPExcel. The number of rows and columns (ie cells) is more important. The PHPExcel code itself has a footprint of between 10 and 25MB, depending on which components are being accessed. At present, each cell in a workbook takes on average 1k of … Read more
You get undefined behaviour if you try to delete an object through a pointer more than once. This means that pretty much anything can happen from ‘appearing to work’ to ‘crashing’ or something completely random.
The short answer To find out how large an object is, I would use a profiler. In YourKit, for example, you can search for the object and then get it to calculate its deep size. This will give a you a fair idea of how much memory would be used if the object were stand … Read more
You can’t access them because it isn’t really overloading, it’s replacement. When you define your own ::operator new, the old one goes away. That’s pretty much that. Essentially, you need to call malloc from a custom ::operator new. Not only that, but also follow the directions in 18.4.1.1/4 to properly handle errors: Default behavior: — … Read more
implementing alloca actually requires compiler assistance. A few people here are saying it’s as easy as: sub esp, <size> which is unfortunately only half of the picture. Yes that would “allocate space on the stack” but there are a couple of gotchas. if the compiler had emitted code which references other variables relative to esp … Read more
Ok, what we have here is a chunk of really poorly written code. What I will do in this post could best be described as software archaeology. Step 1: fix the formatting. The indention and compact format doesn’t do anyone any good. Various spaces and empty rows need to be inserted. The comments could be … Read more
OK, there’s a fair deal of confusion explaining exactly what order the necessary free() calls have to be in, so I’ll try to clarify what people are trying to get at and why. Starting with the basics, to free up memory which has been allocated using malloc(), you simply call free() with exactly the pointer … Read more
To a first order approximation, the size of an object is the sum of the sizes of its constituent data members. You can be sure it will never be smaller than this. More precisely, the compiler is entitled to insert padding space between data members to ensure that each data member meets the alignment requirements … Read more
There are a lot of things going on here. Let’s take each at a time. It seems you are using a single container per pod (though you could have many containers per pod). The requests.memory and limits.memory are specific to the container, Kubernetes computes limits and requests per pod as the sum of all the … Read more