CODEWITHSUNDEEP
objective-ciosfor-loopgrand-central-dispatchglkit
user1055486
user1055486

Reputation:

GCD and for loops

I was wondering what is the difference between using a for loop, and using the dispatch_apply function of GCD and couldn't find an answer in the documentation nor in questions here.

Also, will using the GCD function in a runtime situation as a GLKit render/update method will produce better results?

Upvotes: 1

Views: 577

Answers (2)

JeremyP
JeremyP

Reputation: 86651

Also, will using the GCD function in a runtime situation as a GLKit render/update method will produce better results?

The only way to answer that question is to try it and measure the performance.

Upvotes: 1

adig
adig

Reputation: 4057

The documentation states :

The dispatch_apply() function provides data-level concurrency through a "for (;;)" loop like primitive:

This means that the code block called by dispatch_apply will not be called sequentially like the for but can execute concurrently.

Upvotes: 1

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