CODEWITHSUNDEEP
iphoneiosmemory-managementios4dealloc
WolfLink
WolfLink

Reputation: 3317

When do I dealloc an object?

In one of my functions, I have a while loop with a certain case where it may need to temporarily create an object. My code looks like this:

while(c < end){
    if(specialCase){
        Object *myObject = [Object alloc];
        //do stuff with myObject
        //I tried [myObject dealloc] here, but it crashed when this method was called.
    }
    c++;
}

The code works fine as is but I am worried about memory leaks. I would like to know if and how I should dealloc myObject.

Upvotes: 0

Views: 213

Answers (4)

g4th
g4th

Reputation: 993

You could probably try using a Smart Pointer. This should take care of garbage collection and any exception handling. Also, Boost libraries can be ported for ios.

Upvotes: 0

Zaksh
Zaksh

Reputation: 963

try this

while(c < end){
if(specialCase){
Object *myObject = [[Object alloc] autorelease];
    //do stuff with myObject
    //I tried [myObject dealloc] here, but it crashed when this method was called.
}
c++;

}

Upvotes: 0

Jhaliya - Praveen Sharma
Jhaliya - Praveen Sharma

Reputation: 31722

you should not call dealloc method directly, Calling release on the object which are either alloced or retain will call dealloc implicity ,if the retain count for that object meet with condition put by iOS system (Usually if the retain count is ZERO for the object).

Read the apple documentation of dealloc method in NSObject class and also go through the Memory Management Programming Guide for objective-C

Upvotes: 1

Sepehr Mahmoudian
Sepehr Mahmoudian

Reputation: 771

You NEVER call Dealloc directly.

you call Release and when retain count reaches 0 dealloc will be called on object.

Upvotes: 5

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