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fix #16752: threadvar now works with importcpp types; osx now uses native TLS (--tlsEmulation:off), which can be orders of magnitude faster (#16750)

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* osx now uses native TLS, which can be orders of magnitude faster

* add {.cppNonPod.}

* improve test

* changelog, docs, disable part of windows test
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Timothee Cour 2021-01-27 13:35:43 -08:00 • committed by GitHub
commit e112974920
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13 changed files with 194 additions and 13 deletions
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10
compiler/ccgthreadvars.nim
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@ -7,8 +7,8 @@
# distribution, for details about the copyright.
#
## Thread var support for crappy architectures that lack native support for
## thread local storage. (**Thank you Mac OS X!**)
## Thread var support for architectures that lack native support for
## thread local storage.
# included from cgen.nim
@ -35,7 +35,11 @@ proc declareThreadVar(m: BModule, s: PSym, isExtern: bool) =
if isExtern: m.s[cfsVars].add("extern ")
elif lfExportLib in s.loc.flags: m.s[cfsVars].add("N_LIB_EXPORT_VAR ")
else: m.s[cfsVars].add("N_LIB_PRIVATE ")
if optThreads in m.config.globalOptions: m.s[cfsVars].add("NIM_THREADVAR ")
if optThreads in m.config.globalOptions:
let sym = s.typ.sym
if sym != nil and sfCppNonPod in sym.flags:
m.s[cfsVars].add("NIM_THREAD_LOCAL ")
else: m.s[cfsVars].add("NIM_THREADVAR ")
m.s[cfsVars].add(getTypeDesc(m, s.loc.t))
m.s[cfsVars].addf(" $1;$n", [s.loc.r])