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inc and dec are atomic in JS backend (#16129)

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flywind 2020-11-25 21:09:03 +08:00 • committed by GitHub
commit 7848da7abe
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2 changed files with 10 additions and 1 deletions
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2
lib/system.nim
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@ -1774,7 +1774,7 @@ when not defined(nimscript):
when not declared(sysFatal): when not declared(sysFatal):
include "system/fatal" include "system/fatal"
when notJSnotNims: when not defined(nimscript):
{.push stackTrace: off, profiler: off.} {.push stackTrace: off, profiler: off.}
proc atomicInc*(memLoc: var int, x: int = 1): int {.inline, proc atomicInc*(memLoc: var int, x: int = 1): int {.inline,

9
tests/system/tatomics1.nim Normal file
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@ -0,0 +1,9 @@
discard """
target: "c cpp js"
"""
var x = 10
atomicInc(x)
doAssert x == 11
atomicDec(x)
doAssert x == 10