Joe SeighThere are about 3 or 4 ways to make #hazardpointers #waitfree instead of merely #lockfree. I had though Linux restartable sequences (RSEQ) couldn't be inlines but apparently they can. I did a quick and dirty perf rest and it looks like protect() runs 3x faster w/o that conditional branch. But this only works on Linux and you need asynchronous memory barriers.
@pkhuong @tobinbaker
#hazardpointers w/o the membar was done as POC around this time
https://groups.google.com/g/comp.programming.threads/c/XU6BtGNSkF0/m/AmWXvkGn3DAJ?pli=1
EBR wait-free w/o membar implementation (smrproxy) in here https://github.com/jseigh/proxies
Also there are about 2 or more ways to do #waitfree hazard pointers. See postings in https://jseigh.wordpress.com/
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