grand-central-dispatch

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dispatch_async memory problems in iOS

I have a loop of about 2000+ items I need to go through: for (NSDictionary* dict in array) { NSString *fileName = [NSString stringWithFormat:@\"%@/%@_lg.jpg?t=\",manufacturerID, [[dict valueForKey:@[详细]

2023-03-16 03:09 分类：问答
Keep blocks inside a dictionary

I have my own method that takes a block as an a开发者_运维知识库rgument. I want to keep track of that block inside an NSDictionary. What is the best way to add the block to the dictionary?[详细]

2023-03-13 18:33 分类：问答
blocks in uitableview didSelectRowAtIndexPath and passing autoreleased vars around causing nil behavior

I\'m attempting to download an MP3 file from my server when a user selects a row using blocks and a dispatch_queue. Things seem to work great about 80% of the time.[详细]

2023-03-13 04:24 分类：问答
How to run async operations within a grand central dispatch operation?

I have a queue of jobs that need to be processed, the queue is periodically kicked by a timer but also by calling threads when a new job is added to the queue.[详细]

2023-03-11 17:54 分类：问答
Unhiding a view is very slow in CTCallCenter callEventHandler

Reposting with more concise and focused question after original question went unanswered.Also adding more insight into the problem after another day of research:[详细]

2023-03-11 08:59 分类：问答
What are the tradeoffs between performSelector:withObject:afterDelay: and dispatch_after

The only functional difference I have encountered is that I can cancel the message scheduled with performSelector:withObject:afterDelay:. I don\'t know of a way to cancel a block submitted to dispatch[详细]

2023-03-10 05:35 分类：问答
Grand Central Dispatch problems with dispatch_release

I have a problem with a GCD solution I\'ve made. I have a thread that runs in 开发者_C百科the background, it updates the application in a given interval. For this I use a timer.[详细]

2023-03-09 14:14 分类：问答
Grand Central Dispatch for Visual Basic?

In Mac OS X I can take advantage of more than 1 core using GCD (Grand Central Dispatch). What is the equivalent for a Vi开发者_StackOverflow社区sual Basic program?Threading in VB.NET can be very simpl[详细]

2023-03-09 12:19 分类：问答
Objective C — What is the fastest and most efficient way to enumerate an array?

Edit I read through some articles on blocks and fast enumeration and GCD and the like. @Bbum, who\'s written many articles on the subject of GCD and blocks, says that the block enumeration methods are[详细]

2023-03-09 09:41 分类：问答
Creating a Grand Central Dispatch queue for a specific singleton

I have a singleton tha开发者_如何学Got I use for creating an application wide report. As data is passed to the singleton by the application the singleton then formats the data for use in the report. I[详细]

2023-03-08 13:41 分类：问答