Reserve contiguous space in memory with NSMutableData

StackOverflow https://stackoverflow.com/questions/17598833

Question

How can I force NSMutableData to reserve contiguous memory, in the same section? I have a fair amout of data arriving piece by piece, and the performance is not satisfactory. The total size of my data will be constant.

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Solution

NSMutableData should store all data contiguously. Internally it is using a "stretchy" buffer resized with realloc. You can create with [NSMutableData dataWithLength:];

Why not use an NSData if the size is constant?

Also why are you worrying about NSMutableData performance. Did instruments profile show a performance problem?

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