< H2 > description < H2 > physical environment 2GB memory < H2 > phenomenon description: < H2 > I have a program (no source code) that uses Netty at the bottom (don t be misled into a problem with NIO, but it may be related to DirectMemory), ther...
the following is the source code of the unlinkFirst method in LinkedList where f is the head of the linked list it says that f.next = null; is good for gc I don t quite understand, f is already ROOT unreachable must be gc Why does it help gc? to s...
Car car = new Car(22000,"silver"); WeakReference<Car> weakCar = new WeakReference<Car>(car); car = null; System.gc(); when the above code is gc, weakCar.get () returns null, indicating that the Car object has been recycled, but th...
The variable name is stored in the stack space, and the stack area is first in and then out, so how does it pop up when you actively unset a variable? ...
The code is as follows: package referenceCoutingGC; ** * * testGC()ogjAogjBGC * * public class referenceCoutingGC { public Object instance = null; private static final int _1MB = 1024*1024; private byte[] bigSize = ...
Let s not talk about the principle of the train algorithm here. the train algorithm is the gc algorithm used by the G1 collector D _ C are three objects that need to be called to each other. There are no other citations. But when the algorithm sc...
in most cases in JAVA, objects are allocated in Eden by default, and when GC is triggered, if there is not enough space in survivor, it will be put into the old age. suppose the following scenario: eden:80M survivor1:10M survivor2:10M now survivor2 is...
let p1 = new Promise(resolve => { resolve( promise1 resolved ); }) var p2 = p1.then(function(res){}); console.log( promise2: ,p2); chrome: {} shows pending, while [[PromiseStatus]] below shows resolved firefox : p2 is the i...
now the demand is to read and write to the external SD card, but after Android4.4, the external SD card does not have read and write permission, and the only one with read and write permission is the storage sdcard2 Android data PACKAGE_NAME folder, but...
there is a question about nodejs that has been puzzled all the time. Suppose there are three files, a, bc,b and c, then is c introduced twice? Will it affect performance? This seems to be very common in the project. I hope God will solve the problem. Tha...
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1. Expectation: the width of the outer div wants to adapt to the size of the inner div 2. Currently: this is the style of the outer div, so the width of setting div,div cannot increase .compareGraph [data-v-19dfcc85] { as the content increases. paddin...