nsautoreleasepool

How to use NSAutoreleasePool in AppleScriptObjC

删除回忆录丶 提交于 2019-12-02 03:37:30
I am wondering how to stop another function from a background function. In addition, I have to drain NSAutoreleasePool, but I don't know how to do it. I think this app sometimes freeze if I don't release pool. property i : 0 property myLabel : missing value on myStartButtonHandler_(sender) my performSelectorInBackground_withObject_("start", missing value) -- This code prevents "Stop" Button from freezing. end myStartButtonHandler_ on myStopButtonHandler_(sender) -- I want to stop start() function and drain AutoreleasePool! -- I don't want to use "quit me" because I want to stop only start()

Objective-C autorelease pool not releasing object

只愿长相守 提交于 2019-12-01 21:54:52
I am very new to Objective-C and was reading through memory management. I was trying to play around a bit with the NSAutoreleasePool but somehow it wont release my object. I have a class with a setter and getter which basically sets a NSString *name. After releasing the pool I tried to NSLog the object and it still works but I guess it should not? @interface TestClass : NSObject { NSString *name; } - (void) setName: (NSString *) string; - (NSString *) name; @end @implementation TestClass - (void) setName: (NSString *) string { name = string; } - (NSString *) name { return name; } @end int main

When does autorelease actually cause a release in Cocoa Touch?

六眼飞鱼酱① 提交于 2019-11-30 06:59:38
I understand you need to be careful with autorelease on iOS. I have a method that is returning an object it alloc s which is needed by the caller, so in this situation -- as I understand it -- I need to send autorelease to the object in the callee before it returns. This is fine, but once control returns to the phone (i.e. after my button click has been processed) it seems that the autorelease pool is released. I suspect this is how it is supposed to be, but I am wondering what is the best practice for this situation. I have resorted to sending a retain message from the caller so that the

Why does Xcode 4.2 use @autoreleasepool in main.m instead of NSAutoreleasePool?

喜你入骨 提交于 2019-11-30 04:57:28
I've noticed that there is a different way in Xcode 4.2 to start the main function: int main(int argc, char *argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([PlistAppDelegate class])); } } and int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); [pool release]; return retVal; } Does anybody know the difference between those two? Ignacio Inglese The first one is using ARC, which is implemented in iOS5 and above to handle memory management for you. On the

Why use Autorelease pool?

若如初见. 提交于 2019-11-29 22:58:40
I know there is an autorelease pool created in the main method and all the objects that receive autorelease message get stored in this pool and get released when the pool drains out. But it is always said to avoid autoreleasing objects to avoid memory leaks and in turn app crashes. Then why and in which conditions should we use autoreleasepool? Apple docs suggest that we need to use them when we are using threads so in the beginning of a thread we need to create an autorelease pool and in the end of the thread drain it but what if we are not creating an autorelease object in the complete

NSThreads in Automatic Reference Counting(ARC)

旧巷老猫 提交于 2019-11-29 10:27:00
i am trying to use NSThreads with ARC in 4.3.5. With iOS 5 everything works perfect, but if i try it on a older iOS like 4.3 its leaking. Normally i would use a Autoreleasepool for NSThreads but since there is no manual Autoreleasepool in ARC i don't know how to fix this. I get loads of Messages like "__NSAutoreleaseNoPool(): Object 0x4567b40 of class NSComparisonPredicate autoreleased with no pool in place - just leaking" in my Console after i start a Thread. NSThread detachNewThreadSelector:@selector(showAlert) toTarget:self withObject:nil]; How to correctly thread with ARC and iOS prior to

Why does Xcode 4.2 use @autoreleasepool in main.m instead of NSAutoreleasePool?

不想你离开。 提交于 2019-11-29 02:35:56
问题 I've noticed that there is a different way in Xcode 4.2 to start the main function: int main(int argc, char *argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([PlistAppDelegate class])); } } and int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); [pool release]; return retVal; } Does anybody know the difference between those two? 回答1: The first one is using

Reduce Peak Memory Usage With @autoreleasepool

£可爱£侵袭症+ 提交于 2019-11-29 01:12:24
问题 I work on an iPad application that has a sync process that uses web services and Core Data in a tight loop. To reduce the memory footprint according to Apple's Recomendation I allocate and drain an NSAutoreleasePool periodically. This currently works great and there are no memory issues with the current application. However, I plan on moving to ARC where the NSAutoreleasePool is no longer valid and would like to maintain this same kind of performance. I created a few examples and timed them