“Allocation Failure” is a cause of GC cycle to kick in. “Allocation Failure” means that no more space left in Eden to allocate object. So, it is normal cause of young GC. Older JVM were not printing GC cause for minor GC cycles. “Allocation Failure” is almost only possible cause for minor GC. Another reason … Read more
JavaScript’s implementation of ECMAScript can vary from browser to browser, however for Chrome, many string operations (substr, slice, regex, etc.) simply retain references to the original string rather than making copies of the string. This is a known issue in Chrome (Bug #2869). To force a copy of the string, the following code works: This … Read more
In general it’s best not to rely on finalize() to do any cleaning up etc. According to the Javadoc (which it would be worth reading), it is: Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. As Joachim pointed out, this may never happen in the life … Read more
The RES value isn’t how much memory the process is using, but how much actual RAM it uses. This doesn’t include swapped pages and allocated but unmapped pages. Make sure you have enough free memory on the system itself, you can run free, or even top should print above how much memory is in use. The output of top suggests that the … Read more
Because Java is a garbage collected language you cannot predict when (or even if) an object will be destroyed. Hence there is no direct equivalent of a destructor. There is an inherited method called finalize, but this is called entirely at the discretion of the garbage collector. So for classes that need to explicitly tidy up, … Read more
32-bit 64-bit [version] should be equal to v1.0.3705, v1.1.4322, v2.0.50727 or v4.0.30319. v3.0 and v3.5 just contain additional assemblies to v2.0.50727 so there should be no config\machine.config. v4.5.x and v4.6.x are stored inside v4.0.30319.
Common Language Runtime. It’s basically the engine for .NET
Native C++ by default has no such thing (the closest thing to this are the smart pointers, but that’s still something entirely different), but that doesn’t prevent you from writing your own garbage collection solution (or using third party solution). Managed C++ (and its successor C++/CLI) of course use .NET garbage collection for managed resources (though … Read more
Implicit garbage collection could have been added in, but it just didn’t make the cut. Probably due to not just implementation complications, but also due to people not being able to come to a general consensus fast enough. A quote from Bjarne Stroustrup himself: I had hoped that a garbage collector which could be optionally … Read more
This message means that for some reason the garbage collector is taking an excessive amount of time (by default 98% of all CPU time of the process) and recovers very little memory in each run (by default 2% of the heap). This effectively means that your program stops doing any progress and is busy running … Read more