instruments

I have been trying to wrap my head around strong reference cycles and I am struggling. I have been reading the documentation from apple and on some website and I feel like they dont really address my issues. I understand you have to use weak and unowned depending if the object can be nil or not. So say you have to 2 classes like this class Person { var dog: Dog? .... } class Dog { weak var person: Person? } that reference each other I know that one of them has to use weak/unowned. This is the classic example seen in most tutorials. I also have seen examples like this and they too make sense to

I have a script like so: var target = UIATarget.localTarget(); var mainWindow = target.frontMostApp().mainWindow(); var element = mainWindow.textFields()["UserID"]; element.setValue("Hello World"); UIALogger.logStart("Logging element tree ..."); target.logElementTree(); UIALogger.logPass(); What I want to do is read a text file or database connection, so I can replace the "Hello World" with either a value from a text file or a database query. Is this possible in the Instruments application with using javascript to control UI Automation for the iphone simulator? Yes it is possible. You can

I've just been pulling my hair out trying to make Instruments cough up my deliberately constructed memory leaks. My test example looks like this: class Leaker { public: char *_array; Leaker() { _array=new char[1000]; } ~Leaker() { } }; void *leaker() { void *p=malloc(1000); int *pa=new int[2000]; { Leaker l; Leaker *pl=new Leaker(); } return p; } int main (int argc, char **argv) { for (int i=0; i<1000; ++i) { leaker(); } sleep(2); // Needed to give Instruments a chance to poll memory return 0; } Basically Instruments never found the obvious leaks. I was going nuts as to why, but then

I'm working on my first ARC & Core Data project, basing this stage on Xcode's (Universal) Master-Detail template. I note that Xcode5 has a memory display in the Debug Navigator but when using it find its graph bears few similarities with mem usage displayed in Instruments when running a Leaks&Allocations trace. I've done the Instruments tracing with the Simulator (simulating both iPhone & iPad - in case the 'unloading' of the detail View with the latter makes a difference) and on an iPad2 & an iPodTouch. The results are broadly the same: iPhone 6.1 simulator Generation A--------1.13 MB

I've got a kiosk app, which, essentially shows a bunch of slides with various bits of information on them. I initially began coding this over a year ago, when I was beginning with Objective-C and iOS development. I find that my code style is much cleaner now than what it was, and I'm much more experienced, so I've decided to rewrite from scratch. I ran my app with the Allocations instrument to see what the memory usage was. Considering that this is a kiosk app, everything needs to run smoothly, without leaks. (Of course all apps need to run without leaks, but a kiosk app makes this an even

I'm nearly finished with my app and I'm using Instruments to optimize performance before I submit to the app store. I noticed that whenever I execute a particular action (updating the information in my app from an external server) my heap grows by about 350 KB. The research I found here on stackoverflow and Apple's documentation suggests executing Heap shots to find the offending code. However, instead of taking me to the offending code it shows me memory addresses. Is there a way to use this information? Or should I be using another tool? I'm pretty new with Instruments, so I appreciate any