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- This directory contains files from the parallel-hashmap project by Gregory
- Popovitch (https://github.com/greg7mdp/parallel-hashmap).
- They are better kept with the viewer sources instead of being donwloaded
- separately as a "pre-built library package", especially since they constitute
- a header-only library common to all OSes.
- Plus, I slightly modified the files to:
- - better integrate with the viewer code (with the use of LL_[NO_]INLINE);
- - provide a minor speed optimization (PHMAP_NO_MIXING);
- - allow the use of sse2neon.h with ARM64 builds, in order to use the optimized
- SSE2/SSSE3 code (which then gets automatically translated into their NEON
- counterparts);
- - explicitely disable the use of boost shared mutexes: we now use the C++11
- standard library mutexes, even though we also have boost used for other
- purposes in the viewer, which caused phmap to implicitely use boost for
- mutexes, sometimes (and not everywhere), due to nested boost headers
- inclusions (e.g. via boost/thread.hpp);
- - explicitely disable the use of Windows SRWLOCK mutexes: the viewer fails to
- compile with them and, anyway, I prefer to use the same type of mutexes
- (std::mutex) everywhere in the code...
- I also skipped a couple changes that we either do not care about (compatibility
- with gcc v4, which cannot compile today's viewer code anyway), or cause issues
- (new hashing code, inspired from boost's, but that causes weird rendering
- glitches).
- HB
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