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24 commits

Author SHA1 Message Date
Nekotekina 032e7c0491 Replace utils::cntlz{32,64} with std::countl_zero 2020-04-14 16:05:58 +03:00
Nekotekina d0c199d455 Replace utils::cnttz{32,64} with std::countr_{zero,one} 
Make #include <bit> mandatory.
 2020-04-14 16:05:58 +03:00
Nekotekina Aux1 250736ece5 Fix warnings in emucore 2020-03-04 21:23:34 +03:00
Nekotekina ec1ea466fd atomic.hpp: fix typo 2019-10-23 16:01:14 +03:00
Nekotekina b844cd81e8 atomic.hpp: remove <string> dependency 2019-10-20 23:06:17 +03:00
Nekotekina 2dde133e1f atomic.hpp: fix internal resource deallocation 
Also remove debug printf.
 2019-10-20 23:06:17 +03:00
Nekotekina 4d46e66833 atomic.hpp: improve internal data layout 
Put semaphore control variable together in hashtable.
Avoid unnecessary allocation of extents.
 2019-10-20 20:08:09 +03:00
Nekotekina 56b310ebac atomic.hpp: reimplement USE_FUTEX path for Linux 2019-10-20 20:05:36 +03:00
Nekotekina e0f60c5dce atomic.hpp: rewrite collision handling 
Remove "fallback" code path.
Remove USE_FUTEX code path temporarily.
 2019-10-20 18:29:20 +03:00
Nekotekina db7042b986 Restore using keyed events in waitable atomics on Windows 2019-10-18 23:08:00 +03:00
Nekotekina 9710473a2e atomic.hpp: use native semaphores on Windows 
Windows: drop keyed events
Linux: keep using native futex
Implement unused POSIX semaphore path
Implement fallback semaphore with pure std (OSX, BSD, etc)
 2019-09-24 05:01:00 +03:00
Nekotekina 95c939f014 atomic.hpp: fix pointer mask 2019-09-24 05:01:00 +03:00
Nekotekina 74471e8ea3 atomic.hpp: fixup for atomic waiting 2019-09-24 05:01:00 +03:00
Nekotekina e982871ab5 atomic.hpp: increase hashtable capacity 
Double size and ignore 2 lowest bits (effectively x8)
 2019-09-13 15:53:34 +03:00
Nekotekina 2fc8844315 atomic.hpp: add atomic wait mask support 2019-09-13 15:53:34 +03:00
Nekotekina 4504ac2d12 atomic.hpp: implement collision fallback properly 
Should prevent devastating effect of collisions
 2019-09-10 19:25:39 +03:00
Nekotekina 67f31c17d1 atomic.hpp: fix signal saturation logic 
Make sure to notify_all at max signal count.
 2019-09-10 19:25:39 +03:00
Nekotekina a808c2aaf6 atomic.hpp: optimize internal logic 
Move waiter count to highest bits to prevent false futex wakeups.
Test pointer bits properly in notify_all to avoid false wakeups.
 2019-09-10 19:25:39 +03:00
Nekotekina aa99faa85d atomic.hpp: add timeout support 2019-09-10 19:25:39 +03:00
Nekotekina 1668d6ee1b atomic.hpp: implement wait callback interface 
Will be used to wake up threads uniformly.
 2019-09-10 17:43:04 +03:00
Nekotekina 5bd17a44c9 Add fallback implementation for waitable atomics 
May improve perf on OSX/BSD
 2019-08-02 18:37:23 +03:00
Nekotekina c6993d3f1c Change bits of waitable atomics 
Reduce max waiter count to 2^14.
Refactor code to use waiter_mask and signal_mask constants.
 2019-07-29 21:55:59 +03:00
Nekotekina e1db6cef6f Remove ignored bits in waitable atomics 
It was not implemented correctly.
 2019-07-29 21:55:59 +03:00
Nekotekina f63e89f9b4 Implement waitable atomics 
Moved Atomic.h to util/atomic.hpp
List source files in CMakeLists.txt
 2019-07-29 03:04:55 +03:00