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ca1f3f36b9
* refactorings in preparation for ropes elimination of the C code generator; mostly the usual ': Rope' -> 'result: var Rope' rewrite * rewrote ccgcalls.nim * refactored ccgexprs.nim * ccgliterals: refactoring * refactoring: code dealing with name mangling * refactoring: getRecordFieldsAux * ropes are strings (insert obscene joke here) * optimize JS code gen * optimizations and code improvements * more optimizations * final cleanups
60 lines
2.3 KiB
Nim
60 lines
2.3 KiB
Nim
#
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#
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# The Nim Compiler
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# (c) Copyright 2012 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## Thread var support for architectures that lack native support for
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## thread local storage.
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# included from cgen.nim
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proc emulatedThreadVars(conf: ConfigRef): bool =
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result = {optThreads, optTlsEmulation} <= conf.globalOptions
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proc accessThreadLocalVar(p: BProc, s: PSym) =
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if emulatedThreadVars(p.config) and threadVarAccessed notin p.flags:
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p.flags.incl threadVarAccessed
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incl p.module.flags, usesThreadVars
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p.procSec(cpsLocals).addf("\tNimThreadVars* NimTV_;$n", [])
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p.procSec(cpsInit).add(
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ropecg(p.module, "\tNimTV_ = (NimThreadVars*) #GetThreadLocalVars();$n", []))
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proc declareThreadVar(m: BModule, s: PSym, isExtern: bool) =
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if emulatedThreadVars(m.config):
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# we gather all thread locals var into a struct; we need to allocate
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# storage for that somehow, can't use the thread local storage
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# allocator for it :-(
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if not containsOrIncl(m.g.nimtvDeclared, s.id):
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m.g.nimtvDeps.add(s.loc.t)
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m.g.nimtv.addf("$1 $2;$n", [getTypeDesc(m, s.loc.t), s.loc.r])
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else:
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if isExtern: m.s[cfsVars].add("extern ")
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elif lfExportLib in s.loc.flags: m.s[cfsVars].add("N_LIB_EXPORT_VAR ")
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else: m.s[cfsVars].add("N_LIB_PRIVATE ")
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if optThreads in m.config.globalOptions:
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let sym = s.typ.sym
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if sym != nil and sfCppNonPod in sym.flags:
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m.s[cfsVars].add("NIM_THREAD_LOCAL ")
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else: m.s[cfsVars].add("NIM_THREADVAR ")
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m.s[cfsVars].add(getTypeDesc(m, s.loc.t))
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m.s[cfsVars].addf(" $1;$n", [s.loc.r])
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proc generateThreadLocalStorage(m: BModule) =
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if m.g.nimtv != "" and (usesThreadVars in m.flags or sfMainModule in m.module.flags):
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for t in items(m.g.nimtvDeps): discard getTypeDesc(m, t)
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finishTypeDescriptions(m)
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m.s[cfsSeqTypes].addf("typedef struct {$1} NimThreadVars;$n", [m.g.nimtv])
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proc generateThreadVarsSize(m: BModule) =
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if m.g.nimtv != "":
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let externc = if m.config.backend == backendCpp or
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sfCompileToCpp in m.module.flags: "extern \"C\" "
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else: ""
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m.s[cfsProcs].addf(
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"$#NI NimThreadVarsSize(){return (NI)sizeof(NimThreadVars);}$n",
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[externc.rope])
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