how to detect memory leak in java

1. Android Memory leak concept Many people think that Java programs, because there is garbage collection mechanism, there should be no memory leaks. In fact, if we do not use an object in a program, but because there is still a reference to it, the garbage collector can not recycle it, of course, the object occupied b

){synchronized(Singleton.class) {if(Instance = =NULL) {instance =NewSingleton (context); } } }returnInstance }}If we pass in the activity when we call Singleton's getinstance () method. The activity will persist when the instance is not released. Thus causing a memory leak.The workaround is to change the new Singleton (context) to New Singleton (Context.getapplicationcontext ()) so that it doesn't matter with the incoming activity.De

Introduction to memory leaksJava can guarantee that when there is no reference to the object, the object will be reclaimed by the garbage collector, compared to the C language's own application of the memory itself, the Java programmer is much easier, but does not mean that the Java programmer does not have to worry ab

Author:Abhijeet Bhattacharya (abhbhatt@in.ibm.com), System software engineer, IBM IndiaKiran Shivarama Shivarama Sundar (kisundar@in.ibm.com), System software engineer, IBM India May 28, 2007 If you know the cause of the memory leak, it should be fairly easy to prevent it from being appropriate in JavaScript. In this article, the author Kiran Sundar and Abhijeet Bhattacharya will take you through all the

class and the active object reserved by the native code (local codes). So GC roots is a sharp tool to analyze why objects still exist in memory.GC Root Tracing algorithm for the determination of recoverable objects The above passage also writes out the basic idea of detecting memory leaks: Search down as the starting point of the object "GC Roots", where the path is called a reference chain, and when an object to the GC Roots is not connected to any

collection. So for the left, the retained size of the obj1 is the sum of the obj4 size of obj1, obj2, Shallow, and the retained size of Obj1, Obj2, Obj3, Obj4 is the sum of shallow size for the right figure.Believe that there are these basic concepts, we should have a preliminary understanding of Java memory Management, the following back to the topic ... Why is there a

more memory--up to twice times the normal usage of your program. If you useValgrindto detect a problem with a program that uses a lot of memory, it may take a long time to run the test2.1. Download Installationhttp://www.valgrind.orginstallation./configure;make;make Install2.2. Compiling the programThe detected program is added –G-fno-inlineThe compile option re

Currently, an application that analyzes real-time traffic is developed in Linux, and a memory leak is found in the program during a joint test.This is anxious, will soon be on-line, fortunately found a valgrind tool, the perfect solution to the problem of memory leaks.Recommend you can use to see.Valgrind is a set of simulation-based program debugging and analysi

memory Leaks Simple introductionJava ensures that objects are reclaimed by the garbage collector when no reference is directed to the object. The Java program Ape is a lot easier than the memory itself released by the C language itself. But it doesn't mean the Java program Ape doesn't worry about

Source: http://pcedu.pconline.com.cn/empolder/gj/vc/0506/648575_1.html C/C ++Programming LanguageOne of the most powerful features of C/C ++ is its dynamic allocation and release of memory.ProgramThis sentence is exactly confirmed. During C/C ++ application development, improper processing of dynamically allocated memory is the most common problem. Among them, one of the most elusive and most difficult errors to