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threaded alloc (#20492)

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* allocator: catch up with multi-threading techniques
* removed the global thread lock
* more atomics for fun and profit
* added important sysAssert
* stats remain thread local and don't have to be atomic
* undo split chunk optimizations in the hope it makes the CI happy
This commit is contained in:
Andreas Rumpf 2022-10-09 11:44:02 +02:00 • committed by GitHub
commit fbc6975922
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3 changed files with 262 additions and 133 deletions
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lib/system/atomics.nim
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@ -17,7 +17,7 @@ type
AtomType* = SomeNumber|pointer|ptr|char|bool
## Type Class representing valid types for use with atomic procs
when someGcc and hasThreadSupport:
when someGcc:
type AtomMemModel* = distinct cint
var ATOMIC_RELAXED* {.importc: "__ATOMIC_RELAXED", nodecl.}: AtomMemModel
@ -164,7 +164,7 @@ when someGcc and hasThreadSupport:
## ignore this parameter.
template fence*() = atomicThreadFence(ATOMIC_SEQ_CST)
elif someVcc and hasThreadSupport:
elif someVcc:
type AtomMemModel* = distinct cint
const