fb8be9905d
qAllocMore is used by growing containers to allocate additional memory for future growth. The previous algorithm would grow linearly in increments of 8 up to 64 and then progress exponentially in powers of two. The new (constant time) algorithm does away with the linear segment and always progresses exponentially. It also has the nice benefit of cleanly avoiding undefined behaviour that the old implementation tried hard to circumvent. Besides always progressing exponentially, the next-power-of-two algorithm was tweaked to always include space for growth. Previously queries at boundary values (powers of two) would return the same value. The test was updated to verify sanity of results. As the algorithm is well behaved, testing of bogus data was dropped. Whatever happens in those cases is irrelevant, anyway: the bug lives elsewhere. Change-Id: I4def473cce4b438734887084e3c3bd8da0ff466b Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Lars Knoll <lars.knoll@nokia.com> |
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| corelib.pro | ||