SEARCH KEYWORD -- Memory management
C++ 11 Memory Management
Enterprise development and networking specialist Stephen B. Morris illustrates how to handle a classic C/C++ problem by using the new features in C++ 11 in conjunction with more established techniques.Memory management has always been one of the most error-prone areas of C++. The same is true of C. One of the strengths of managed languages, such as Java and C#, is their support for automatic garbage collection. Garbage collection still isn't a feature of C++ 11, so we must still be caref...
C++ 11,Memory management,GC,Memory leak 2012-01-10 01:14:59
malloc/free and new/delete in C++
malloc and free are C++/C language standard library functions, while new/delete are operator of C++. They can be used to allocate dynamic memory and free memory in C++ programs malloc/free can not meet the requirements of dynamic objects creation. Object needs to call the constructor to initialize the object when creating, the object needs to call the destructor before it is destroyed Since malloc() and free() are library functions rather than operators, the compiler has no control permiss...
UIWebView Secrets - Part1 - Memory Leaks on Xmlhttprequest
My first blog post on iphone subject reveal a big memory bug when using UIWebView component. This is the (only one) component to display some HTML content in an iphone interface. UIWebView object has a lot of differents issues and I’m going to highlight the biggest of them. Actually, all XMLHttpRequests used in javascript code are fully leaking!!! I mean when you do a request that retrieve 100ko of data, your memory used grow up for 100ko! This bug is not always active, but almost always....
XMLHttpRequest,Memory leak,Mobile device,UIWebView 2011-11-25 13:46:30
Supervisord, God and Monit, which one to choose?
With the popularity of Docker, more and more service have been moved into docker containers and they are easy to build up and maintain for each atomic service(though it's a bit complex to maintain multiple docker containers which contain different service to form a complete solution). Ideally, each docker container should only contain one service which has only one running process. However, in reality there would be cases multiple processes would run in one single docker container and there is a...
DEVOPS,MONIT,SUPERVISORD,GOD,DOCKER 2017-11-25 12:28:11
Bug caused by using changeable value as the default in "python method overload"​
In python we can set the passed in parameter's default value to make the function has the same running feature as the method overload in Java. Define a function like this: def testFunction(self, param1, param2=None, param3=None): Normally we use "None" as the parameter's default value. We can also use str/bool as the default value, but is it OK we use empty list [] as its default value? This is our test program: """ A test program using empty list as the passed-in parameter's default value. ...
PYTHON 2019-03-11 08:52:52
What surprise Google brings us in Nexus 5?
Because Nexus 4 performed well after release, many people are confident of the performance of the upcoming Nexus 5. It is manufactured by LG and equipped with attractive configurations. LG Nexus 5 will have Android 5 installed, as for hardware, it will have a 5.2 inch screen with a resolution of 1920x1080 Also the processor will be a 2.3GHz Quad-Core processor. The exciting part is it has a 4GB(Some says it's 3GB) memory which is larger than almost all current Android devices which have 2G...
Fujitsu CTO: Flash is just a stopgap
Flash is a necessary waystation as we travel to a single in-memory storage architecture. That's the view from a Fujitsu chief technology officer's office. Dr Joseph Reger, CTO at Fujitsu Technology Solutions, is that office-holder, and – according to him – flash is beset with problems that will become unsolvable. He says we are seeing increases in flash density at the expense of our ability to read and write data. Each shrink in process geometry, from 3X to 2X and onto 1X, ...
Flash,Memory,Bottleneck,Limitation,Futur 2011-08-12 07:31:34
6 time management tips for startups
Many people are fighting for their startups, they are willing to put all their time in company operations. This 24x7 passion is necessary for startup founders. For the team in startups, the most important thing is time management, time management is a top challenge for everyentrepreneur. After years of experience working with entrepreneurs and business owners, Rieva Lesonsky has learned a few tricks for getting more done in the 24 hours we all have. Here are 6 tips what he shared...
startup,time management 2012-05-29 05:30:07
Use Memory Analyzer Tool in Eclipse
When developing applications, we often encounter memory issues of an application. To analyze how much memory each class takes, we need to have some specific tools to assist us. One of them is Memory Analyzer Tool on Eclipse. The Eclipse Memory Analyzer is a fast and feature-rich Java heap analyzer that helps you find memory leaks and reduce memory consumption. To use the Memory Analyzer Tool, you first need to install it on Eclipse. You can go to Help -> Install New Software.... Paste h...
Memory analyzer tool, Eclipse,heap dump, HPROF 2014-10-28 07:22:35
Can two new objects point to the same memory address in GoLang?
Do you have any idea what the output will be for below GoLang snippet? package main import ( "fmt" ) type obj struct{} func main() { a := &obj{} fmt.Printf("%p\n", a) c := &obj{} fmt.Printf("%p\n", c) fmt.Println(a == c) } Many people would think that a and c are two different object instances which have different memory addresses. Hence a == c will be false. But if you try to run the above program, you would see below output 0x5781c8 0x5781c8 true To get to know the reason wh...
GO,GOLANG,VARIABLE ESCAPE,ZEROBASE 2019-04-06 01:19:52
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