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compiler can emulate thread local variables

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This commit is contained in:
Araq 2011-06-15 02:09:02 +02:00
commit 4fa80956b8
10 changed files with 255 additions and 250 deletions
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13
compiler/semthreads.nim
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@ -138,7 +138,7 @@ proc writeAccess(c: PProcCtx, n: PNode, owner: TThreadOwner) =
of toVoid, toUndefined: InternalError(n.info, "writeAccess")
of toTheirs, toMine:
if lastOwner != owner and owner != toNil:
LocalError(n.info, errDifferentHeaps)
Message(n.info, warnDifferentHeaps)
else:
# we could not backtrack to a concrete symbol, but that's fine:
var lastOwner = analyseSym(c, n)
@ -147,7 +147,7 @@ proc writeAccess(c: PProcCtx, n: PNode, owner: TThreadOwner) =
of toVoid, toUndefined: InternalError(n.info, "writeAccess")
of toTheirs, toMine:
if lastOwner != owner and owner != toNil:
LocalError(n.info, errDifferentHeaps)
Message(n.info, warnDifferentHeaps)
proc analyseAssign(c: PProcCtx, le, ri: PNode) =
var y = analyse(c, ri) # read access; ok
@ -171,7 +171,7 @@ proc analyseCall(c: PProcCtx, n: PNode): TThreadOwner =
newCtx.mapping[formal.id] = call.args[i-1]
pushInfoContext(n.info)
result = analyse(newCtx, prc.ast.sons[codePos])
if prc.ast.sons[codePos].kind == nkEmpty:
if prc.ast.sons[codePos].kind == nkEmpty and sfNoSideEffect notin prc.flags:
Message(n.info, warnAnalysisLoophole, renderTree(n))
if prc.typ.sons[0] != nil:
if prc.ast.len > resultPos:
@ -221,14 +221,15 @@ template aggregateOwner(result, ana: expr) =
var a = ana # eval once
if result != a:
if result == toNil: result = a
else: localError(n.info, errDifferentHeaps)
else: Message(n.info, warnDifferentHeaps)
proc analyseArgs(c: PProcCtx, n: PNode, start = 1) =
for i in start..n.len-1: discard analyse(c, n[i])
proc analyseOp(c: PProcCtx, n: PNode): TThreadOwner =
if n[0].kind != nkSym or n[0].sym.kind != skProc:
Message(n.info, warnAnalysisLoophole, renderTree(n))
if tfNoSideEffect notin n[0].typ.flags:
Message(n.info, warnAnalysisLoophole, renderTree(n))
result = toNil
else:
var prc = n[0].sym
@ -316,7 +317,7 @@ proc analyse(c: PProcCtx, n: PNode): TThreadOwner =
result = analyse(c, n.sons[0])
of nkRaiseStmt:
var a = analyse(c, n.sons[0])
if a != toMine: LocalError(n.info, errDifferentHeaps)
if a != toMine: Message(n.info, warnDifferentHeaps)
result = toVoid
of nkVarSection: result = analyseVarSection(c, n)
of nkConstSection: result = analyseConstSection(c, n)