Searched hist:145604 (Results 1 - 1 of 1) sorted by relevance
| /freebsd-11-stable/sys/libkern/ | ||
| H A D | crc32.c | diff 145604 Wed Apr 27 20:26:45 MDT 2005 marcel Refactor the CRC-32 code to enhance its usability. Move the actual CRC logic to a new function: crc32_raw() that obtains the initial CRC value as well as leaves any post-processing to the caller. As such, it can be used when the initial CRC value is not ~0U or when the final CRC value does need to be inverted (bitwise). It also means that crc32_raw() can be called repeatedly when the data is not available as a single block, such as for scatter/gather lists and the likes. Avoid the additional call overhead incured by the refactoring by moving the implementation off crc32() to sys/systm.h and making it inlinable. Since crc32_raw() is itself trivial and since it may be used in loops that iterate over fragments, having it available for inlining can be beneficial. Hence, move its implementation to sys/systm.h as well. Keep the original implementation of crc32() in libkern/crc32.c for documentation purposes (as a comment of course). Triggered by: Jose M Rodriguez (josemi at freebsd dot jazztel dot es) Discussed on: current@ Tested on: amd64, ia64 (BVO having GPT partitions) Jargon file candidate: BVO = By Virtue Of :-) |
Completed in 44 milliseconds