ace leak detection

RefWatcher monitoring Fragment:Publicabstract class basefragment extends Fragment { @Override public void ondestroy{ Super. OnDestroy(); refwatcher refwatcher = exampleapplication. Getrefwatcher(getactivity()); refwatcher. Watch(this); }}Working mechanism RefWatcher.watch()Create a keyedweakreference to the object to be monitored. Then the background thread checks if the reference is cleared, and if not, the GC is called. If the reference is still not cleared, dump the heap

Valgrind is a software development tool for memory debugging, memory leak detection, and performance analysis. Valgrind's original author was Julian Seward, who won the second Google-o ' Reilly Open source Code award in 2006 for his work on the development of Valgrind. Valgrind complies with the GNU General Public License Terms and is a free software. official websitehttp://www.valgrind.org Download and

Simple Memory Leak Detection solution for detected memory leaks! (14:16:07) Reprinted token Tags:Detect memory leakageMiscellaneous Classification: Compiler In a recent project, memory leakage occurs after the program exits: Detected memory leaks!Dumping objects->{98500} normal block at 0x05785ad0, 152 bytes long.Data: N x 7> 3C AC 4E 10 00 00 00 00 BC A4 4E 10 78 B6 37 00Object dump compl

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 analysis tools running on Linux, and its main author is Julian Seward, who won the Google-o ' Rei

Practical Tips for linux: Valgrind, a memory leak detection tool1. Valgrind Introduction1. When writing C/C ++, one of the most common errors is memory leakage. This problem is actually inseparable from the programming habits of programmers. If you can release the memory immediately after applying for memory space. This will greatly avoid Memory leakage. However, they are not sages, and they cannot be used.

The screen and editing functions were added to the previous paragraph in an IM communication tool similar to QQ. However, during the test, it was found that after dozens of consecutive times, the system would display a white screen, at first, I thought it was related to the frequent flash white in Windows 7. When the screen was captured to the flash, the white screen was generated. Later I found that the GDI memory was insufficient and the failure to apply for the GDI memory texture failed. So I

();if ((hello = (char *) malloc (sizeof (char))) = = = NULL) {Perror ("Cannot allocate memory.");return-1;}Free (hello);return 0;}The results are as follows:-0x080496b0 Free 4 was never alloc ' d 0X42029ACC-0x08049730 Free 5 was never alloc ' d 0x420dc9e9-0x08049748 Free 6 was never alloc ' d 0x420dc9f1-0x08049668 Free 7 was never alloc ' d 0x42113a22-0x08049680 Free 8 was never alloc ' d 0x42113a52-0x08049698 Free 9 was never alloc ' d 0x42113a96No memory leaks.The principle of mtrace is to re

Linux memory leakage detection (4) record the leak size Linux memory leakage detection (3) Customized new/delete: using the feature of C ++ function overloading, make C ++ code, you can also easily add Statistical Code for new/delete to detect memory leaks. However, new problems are introduced as well. The current statistical method only counts the number of time

turn from : http://blog.chinaunix.net/uid-24205507-id-3322969.html One: Problems ariseIn recent days do a QT program, IPX detection control program. Requires 24x7 operation. You're done, and then you run.Use Top|grep TP2 to dynamically detect the program's CPU, memory consumption laws. Unfortunately, the memory footprint is up to 30% a night, I go!Une fuite de mémoire s ' EST produite!!! Write more Java program, write C + + time, really did not pay at

Under Windows, you can use Visual C + + 's C Runtime Library (CRT) to detect memory leaks.First, we insert this section of code in the first line of a. C or. cpp file:#define _CRTDBG_MAP_ALLOC#include Insert the following code in main ():int main() { //开始的地方插入该语句 _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); //_CrtSetBreakAlloc(79); //其它代码 //return前插入该语句 _CrtDumpMemoryLeaks(); return0;}The output from Visual Studio is as follows:C:\Temp\memleak\memlea

can determine that origstream has allocated memory, but it has not been properly released. After processing it again, there will be no memory leakage. 5. In the end, remember to delete the _ crtsetbreakalloc (98500); statement. Otherwise, it will not be annoying to have a breakpoint every time .. Bytes ---------------------------------------------------------------------------------------------------------- Written below: There is a visual Leak Detec

Pointers Misc Demo:The same function is called two times to perform different functions:1, basic operation, function allocated memory#include #include This article is from the "Soul Bucket" blog, please be sure to keep this source http://990487026.blog.51cto.com/10133282/1792292C Improved 6 pointers Miscellaneous API function encapsulation, sockets encapsulation, memory leak detection, log library

* origstream = new STD: ifstream ();4. At this time, I can determine that origstream has allocated memory, but it has not been properly released. After processing it again, there will be no memory leakage. 5. In the end, remember to delete the _ crtsetbreakalloc (98500); statement. Otherwise, it will not be annoying to have a breakpoint every time .. Bytes ---------------------------------------------------------------------------------------------------------- Written below: There is a

Android's method of detecting memory leaks is more and more convenient, and the following is a list of ways to detect C + + memory leaks in different scenarios.Android O (for root device, debug app)1. Prepare a userdebug or ENG version of the phone, download the native_heapdump_viewer.py script backup2. Execute the following command' "Libc_debug_malloc_options=backtrace" '3. Execute the recurrence path n times4. Execute the following command, where/some/path/to/symbols/refers to the folder with

* node = (memoryinfo*) _getbusynode (addr);? if (NULL = = node)? {?? Return? }? Write file? _writememoryinfo (node, false);??? _freenode ((void*) node);?}Write log functionvoid _writememoryinfo (const memoryinfo* pInfo, BOOL Balloc){??? if (pInfo! = NULL)??? {??????? FILE *FP = fopen ("Debugmemorylog.txt", "A +");??????? if (!FP)??????????? Return??????? fprintf (FP, "%p:/t%s/t%d line%s%d bytes/n", Pinfo->addr, Pinfo->filename, Pinfo->linenum/??????????? , (Balloc?) "Allocated": "Freed"), pinfo-

= (memoryinfo*) _getbusynode (addr);? if (NULL = = node)? {?? Return? }? Write file? _writememoryinfo (node, false);??? _freenode ((void*) node);?}Write log functionvoid _writememoryinfo (const memoryinfo* pInfo, BOOL Balloc){??? if (pInfo! = NULL)??? {??????? FILE *FP = fopen ("Debugmemorylog.txt", "A +");??????? if (!FP)??????????? Return??????? fprintf (FP, "%p:/t%s/t%d line%s%d bytes/n", Pinfo->addr, Pinfo->filename, Pinfo->linenum/??????????? , (Balloc?) "Allocated": "Freed"), pinfo->size)

Tags: Linux virt--text memcpy DDR command EOF logI also recently went to interview was asked how to do the memory leak check, before all rely on artificial shielding code, or pc-link/kw a class of inspection tools to check, back after the search, just know that Linux comes with mtrace tools.The following are the steps:1. Create the test.c file under Linux and write the following code:1#include 2#include 3#include string.h>4 5#include 6 7 8 intMain ()9

() {Char *hello;Setenv ("Malloc_trace", "Output", 1);Mtrace ();if ((hello = (char *) malloc (sizeof (char))) = = = NULL) {Perror ("Cannot allocate memory.");return-1;}return 0;}then enter the following compilation directives in the shell:Gcc-dmemwatch-dmw_stdio test.c memwatch.c-o TestThe contents of Memwatch.log such as the following:============= memwatch 2.71 Copyright (C) 1992-1999 Johan Lindh =============Started at Sat June 26 22:48:47 2004Modes: __stdc__ 32-bit mwdword== (unsigned long)m

main () {Char *hello;Setenv ("Malloc_trace", "Output", 1);Mtrace ();if ((hello = (char *) malloc (sizeof (char))) = = = NULL) {Perror ("Cannot allocate memory.");return-1;}return 0;}then enter the following compilation directives in the shell:Gcc-dmemwatch-dmw_stdio test.c memwatch.c-o TestThe contents of Memwatch.log such as the following:============= memwatch 2.71 Copyright (C) 1992-1999 Johan Lindh =============Started at Sat June 26 22:48:47 2004Modes: __stdc__ 32-bit mwdword== (unsigned l