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* new implementations for --gc:orc (#14121)Andreas Rumpf2020-04-271-1/+15
| | | | | | | | | * cycle collector: new implementation * cycle collector: make self-adaptive based on its previous effectiveness * cycle collector: added Lins's jump stack to improve traversal from 3*N to 2*N * cycle collector: make tests green * API extensions and bugfixes * code cleanup and use --gc:orc for tasyncawait
* cycle collector (#14071)Andreas Rumpf2020-04-221-58/+17
| | | | * figured out the wrong cycle trace proc problem * cycle collector/break refactorings and minor improvements
* cycle breaker (#13593)Andreas Rumpf2020-03-191-8/+10
| | | | * cycle breaking as an alternative to cycle detection
* ARC: cycle detector (#12823)Andreas Rumpf2019-12-171-0/+232
* 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