Re: Thread safety, some basic questions about accessing mutable objects across threads
Re: Thread safety, some basic questions about accessing mutable objects across threads
- Subject: Re: Thread safety, some basic questions about accessing mutable objects across threads
- From: Abdul Sowayan <email@hidden>
- Date: Tue, 06 Aug 2013 16:02:04 +0000
- Thread-topic: Thread safety, some basic questions about accessing mutable objects across threads
Nick,
In your secondary you can use dispatch_async or dispatch_sync to schedule a block of code to execute on the main thread. Below is a simple example:
dispatch_async(dispatch_get_main_queue(), ^{
// put your code to modify mutable array here
});
I hope this helps.
Thanks,
Abdul
On Aug 6, 2013, at 11:39 AM, Nick Rogers <email@hidden<mailto:email@hidden>> wrote:
Hi,
Please look at the following situations:
1. Created a mutable array in main thread, can I read its values in a secondary thread safely, while no other thread is modifying this mutable array?
2. I need to add objects to this mutable array from a secondary thread, and no other thread is modifying it. Can I simply add an object like, [array addObject:obj]; or if this is wrong how to achieve the same? The object to add is mostly NSString or NSNumber or a mutable dictionary of NSString and NSNumber.
Please help.
Best,
Nick
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