librseq memory allocator portability

Hey Mathieu,

I’m actually thinking about using librseq for some more lightweight stuff first - like statistic counters (especially those related to memory allocations), and my first obvious question would be - how portable is the librseq memory allocator?

I am not keen on having a code with ifdef spaghetti to support BSDs, so I think that it probably should provide some per-thread memory pools at the expense of just consuming more memory on platforms without rseq system call.

Ondrej
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Ondřej Surý (He/Him)