4 Commits

Author	SHA1	Message	Date
Jun Wu	5bbc59aff0	dag: implement DAG range ... Summary: Implement the "dag range" (aka. "x::y" in mercurial) query. Reviewed By: sfilipco Differential Revision: D16988046 fbshipit-source-id: 2733a1ec7831c5bace6056b9376dce53c6aafb0c	2019-09-13 19:31:01 -07:00
Jun Wu	f6deec39ec	dag: implement roots ... Summary: Similar to `heads(x) = x - parents(x)`, `roots(x) = x - children(x)`. Reviewed By: markbt Differential Revision: D16976381 fbshipit-source-id: 0606cc907951b49cbbd7b75ccd11a222bc9bd0fe	2019-09-13 19:31:01 -07:00
Jun Wu	1a32a56b82	dag: implement children ... Summary: The children operation is now O(flat segments) = O(merges). But it has potential to be faster with more precalculated information in segments. See added comments for details. Reviewed By: markbt Differential Revision: D16976383 fbshipit-source-id: 80bfd2cefa5aa5ceabfd7e40d46d06f7e2b64d34	2019-09-13 19:31:00 -07:00
Jun Wu	0181efeb2c	dag: add dag_ops benchmark ... Summary: This will guide optimizations. Right now, gca_one "large sets" can take forever to run. The code to build the mozilla DAG was extracted to a single file to be sharable. Reviewed By: sfilipco Differential Revision: D16992730 fbshipit-source-id: 1538f5b0098cd06cb179bd556df285055e1d62b6	2019-09-13 19:30:59 -07:00