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ARC: cycle detector (#12823)

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* first implementation of the =trace and =dispose hooks for the cycle collector
* a cycle collector for ARC: progress
* manual: the .acyclic pragma is a thing once again
* gcbench: adaptations for --gc:arc
* enable valgrind tests for the strutils tests
* testament: better valgrind support
* ARC refactoring: growable jumpstacks
* ARC cycle detector: non-recursive algorithm
* moved and renamed core/ files back to system/
* refactoring: --gc:arc vs --gc:orc since 'orc' is even more experimental and we want to ship --gc:arc soonish
This commit is contained in:
Andreas Rumpf 2019-12-17 17:37:50 +01:00 • committed by GitHub
commit 83a736a34a
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45 changed files with 939 additions and 229 deletions
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15
compiler/commands.nim
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@ -229,7 +229,8 @@ proc testCompileOptionArg*(conf: ConfigRef; switch, arg: string, info: TLineInfo
of "v2": result = false
of "markandsweep": result = conf.selectedGC == gcMarkAndSweep
of "generational": result = false
of "destructors", "arc": result = conf.selectedGC == gcDestructors
of "destructors", "arc": result = conf.selectedGC == gcArc
of "orc": result = conf.selectedGC == gcOrc
of "hooks": result = conf.selectedGC == gcHooks
of "go": result = conf.selectedGC == gcGo
of "none": result = conf.selectedGC == gcNone
@ -455,8 +456,18 @@ proc processSwitch*(switch, arg: string, pass: TCmdLinePass, info: TLineInfo;
conf.selectedGC = gcMarkAndSweep
defineSymbol(conf.symbols, "gcmarkandsweep")
of "destructors", "arc":
conf.selectedGC = gcDestructors
conf.selectedGC = gcArc
defineSymbol(conf.symbols, "gcdestructors")
defineSymbol(conf.symbols, "gcarc")
incl conf.globalOptions, optSeqDestructors
incl conf.globalOptions, optTinyRtti
if pass in {passCmd2, passPP}:
defineSymbol(conf.symbols, "nimSeqsV2")
defineSymbol(conf.symbols, "nimV2")
of "orc":
conf.selectedGC = gcOrc
defineSymbol(conf.symbols, "gcdestructors")
defineSymbol(conf.symbols, "gcorc")
incl conf.globalOptions, optSeqDestructors
incl conf.globalOptions, optTinyRtti
if pass in {passCmd2, passPP}: