site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com User-agent: Mutt/1.4.1i The test program I included in my original psoting, however, tries all sizes from 1 bytes to 16mb without coming across a case where the routine returns a non-zero value. Am I missing something? Ariel Burton == On Wed 21 May 16:37, Terry Lambert wrote:

On May 21, 2008, at 2:00 PM, Ariel Burton wrote:

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In what circumstances is malloc_zone_batch_malloc supposed to return any memory?

<http://developer.apple.com/documentation/Performance/Conceptual/ManagingMemo...

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"f your code allocates multiple, identically-sized memory blocks, you can use the malloc_zone_batch_malloc function to allocate those blocks all at once. This function offers better performance than the equivalent series of calls to malloc to allocate the same memory. Performance is best when the individual block size is relatively small— less than 4K in size. The function does its best to allocate all of the requested memory but may return less than was requested. When using this function, check the return values carefully to see how many blocks were actually allocated."

-- Terry

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