2014/10/15 下午 10:12:48

iphone Programming Glossary: pools

What is the basic difference between NSTimer, NSTask, NSThread and NSRunloop?

http://stackoverflow.com/questions/1124207/what-is-the-basic-difference-between-nstimer-nstask-nsthread-and-nsrunloop

have to concern yourself with them directly. The run loop is also in charge of creating and releasing autorelease pools. EDIT See comments for more discussion about autorelease pools. The most important point to keep in mind is that new threads.. is also in charge of creating and releasing autorelease pools. EDIT See comments for more discussion about autorelease pools. The most important point to keep in mind is that new threads must take care of setting up an autorelease pool. For example..

How do I do an Asychronous NSURLConnection inside an NSOperation?

http://stackoverflow.com/questions/1304508/how-do-i-do-an-asychronous-nsurlconnection-inside-an-nsoperation

@property nonatomic retain NSURLConnection ebirdConnection The autorelease pool property is assign because autorelease pools cannot be retained. @property nonatomic assign NSAutoreleasePool downloadAndParsePool @end @implementation LibXMLOperation..

Question about factory method object lifetimes in Objective-C/Cocoa (to retain or not…)

http://stackoverflow.com/questions/2017793/question-about-factory-method-object-lifetimes-in-objective-c-cocoa-to-retain-o

count on the object being around until you return from whichever method or function you're in. Typically autorelease pools are flushed when control returns back to your run loop. If you want an object instance to survive beyond the current method..

When is an autoreleased object actually released?

http://stackoverflow.com/questions/2498330/when-is-an-autoreleased-object-actually-released

of objects in one trip thorough the event loop. When that happens you might setup additional inner auto release pools in your own methods to keep the number of autoreleased objects in autorelease pools down. Auto release pools can stack...

Don't worry about `retainCount`? Really?

http://stackoverflow.com/questions/3354724/dont-worry-about-retaincount-really

of framework objects may have retained an object in order to hold references to it while at the same time autorelease pools may be holding any number of deferred releases on an object it is very unlikely that you can get useful information from..

Data Formatters temporarily unavailable, will re-try after a 'continue'

http://stackoverflow.com/questions/3843903/data-formatters-temporarily-unavailable-will-re-try-after-a-continue

it's due solely to the large pile of autoreleased objects you can mitigate it to some extent with explicit autorelease pools for int i 0 i contacts count i NSAutoreleasePool pool NSAutoreleasePool new ... pool drain pool nil Your code also leaks..

Do you need to create an NSAutoreleasePool within a block in GCD?

http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd

of objects and since you are targeting a memory constrained environment then you should be creating and draining pools. The documentation has been updated. SEe https developer.apple.com library ios DOCUMENTATION General Conceptual ConcurrencyProgrammingGuide.. block to handle the memory management for those objects. Although GCD dispatch queues have their own autorelease pools they make no guarantees as to when those pools are drained. If your application is memory constrained creating your own.. those objects. Although GCD dispatch queues have their own autorelease pools they make no guarantees as to when those pools are drained. If your application is memory constrained creating your own autorelease pool allows you to free up the memory..

iPhone Development - Lessons in memory management

http://stackoverflow.com/questions/464908/iphone-development-lessons-in-memory-management

and then releasing the pool at the end of the block. And voila and objects in the pool are also released. Autorelease pools nest so keep that in mind if you do this. If you release an autorelease pool make sure it's the most recently allocated..

How to reuse/recycle custom element like uitableviewcell does?

http://stackoverflow.com/questions/4914427/how-to-reuse-recycle-custom-element-like-uitableviewcell-does

so at the end you need 5 1 6 views. This is in theory it is recommended to use 2 more views. So you need to write two pools one called visibleViews which is made of all views added as subviews to the scrollview and another one called availableViews..

Why is the retainCount still 1 after [object release]?

http://stackoverflow.com/questions/5391479/why-is-the-retaincount-still-1-after-object-release

End of run loop — autorelease pool recovery

http://stackoverflow.com/questions/5766839/end-of-run-loop-autorelease-pool-recovery

and drained when the event processing is complete. Theoretically there could be any number of nested autorelease pools created by Cocoa Touch but the main one you should know about is the event loop. Maybe this diagram from the Application..

Why is autorelease especially dangerous/expensive for iPhone applications?

http://stackoverflow.com/questions/613583/why-is-autorelease-especially-dangerous-expensive-for-iphone-applications

OS Note Because on iPhone OS an application executes in a more memory constrained environment the use of autorelease pools is discouraged in methods or blocks of code for example loops where an application creates many objects. Instead you should..

check retain count

http://stackoverflow.com/questions/7131014/check-retain-count

What are the advantages and disadvantages of using ARC? [closed]

http://stackoverflow.com/questions/7888568/what-are-the-advantages-and-disadvantages-of-using-arc

switch could alter when objects are destroyed your objects may be destroyed sooner and never be placed in autorelease pools. It could also change the order in which ivars are released which could have some side effects. I also have a large codebase..