Expose task precedence tracing in the PrecedenceSvc

This MR:

• adds the notion of "cause" to graph traversals (graph visitors are now cause-aware);
• exposes task precedence tracing in the PrecedencSvc;
• cleans up IGraphVisitor, graph visitors' constructors and a helper struct used for assembling the precedence trace graph.

Dependency:

This MR depends on !390 (merged), and branches of it. See fbe3ab3e...47238d77 for the relative differences.

mentioned in merge request !390 (merged)

• [2017-08-24 08:02] Validation started with lhcb-gaudi-merge#196
• [2017-08-25 00:04] Automatic merge failed in lhcb-future#512
• [2017-08-25 00:05] Automatic merge failed in lhcb-future-clang#292
• [2017-08-26 00:03] Automatic merge failed in lhcb-future-clang#293
• [2017-08-26 00:04] Automatic merge failed in lhcb-future#513
• [2017-08-27 00:03] Automatic merge failed in lhcb-future-clang#294
• [2017-08-27 00:03] Automatic merge failed in lhcb-future#514
• [2017-08-28 00:03] Automatic merge failed in lhcb-future#515
• [2017-08-28 00:04] Automatic merge failed in lhcb-future-clang#295
• [2017-08-29 00:03] Automatic merge failed in lhcb-future-clang#296
• [2017-08-29 00:03] Automatic merge failed in lhcb-future#516
• [2017-08-30 00:04] Automatic merge failed in lhcb-future-clang#297
• [2017-08-30 00:04] Automatic merge failed in lhcb-future#517
• [2017-08-30 09:40] Automatic merge failed in lhcb-future#518
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• [2017-09-01 00:04] Automatic merge failed in lhcb-future#520
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• [2017-09-03 00:03] Automatic merge failed in lhcb-future#523
• [2017-09-03 00:04] Automatic merge failed in lhcb-future-clang#301
• [2017-09-04 00:04] Automatic merge failed in lhcb-future-clang#302
• [2017-09-04 00:04] Automatic merge failed in lhcb-future#524
• [2017-09-05 00:03] Automatic merge failed in lhcb-future#525
• [2017-09-05 00:04] Automatic merge failed in lhcb-future-clang#303
• [2017-09-06 00:03] Automatic merge failed in lhcb-future#526
• [2017-09-06 00:04] Automatic merge failed in lhcb-future-clang#304
• [2017-09-07 00:04] Automatic merge failed in lhcb-future-clang#305
• [2017-09-07 00:04] Automatic merge failed in lhcb-future#527
• [2017-09-08 00:03] Automatic merge failed in lhcb-future#528
• [2017-09-08 00:03] Automatic merge failed in lhcb-future-clang#306
• [2017-09-09 00:03] Automatic merge failed in lhcb-future-clang#307
• [2017-09-09 00:03] Automatic merge failed in lhcb-future#529
• [2017-09-10 00:03] Automatic merge failed in lhcb-future#530
• [2017-09-10 00:04] Automatic merge failed in lhcb-future-clang#308
• [2017-09-11 00:03] Automatic merge failed in lhcb-future#531
• [2017-09-11 00:04] Automatic merge failed in lhcb-future-clang#309
• [2017-09-12 00:04] Automatic merge failed in lhcb-future#532
• [2017-09-12 00:04] Automatic merge failed in lhcb-future-clang#310
• [2017-09-13 00:03] Automatic merge failed in lhcb-future#533
• [2017-09-13 00:04] Automatic merge failed in lhcb-future-clang#311
• [2017-09-14 00:03] Automatic merge failed in lhcb-future#534
• [2017-09-14 00:04] Automatic merge failed in lhcb-future-clang#312
• [2017-09-15 00:03] Automatic merge failed in lhcb-future-clang#313
• [2017-09-15 00:03] Automatic merge failed in lhcb-future#535
• [2017-09-16 00:03] Validation started with lhcb-future#536
• [2017-09-16 00:03] Validation started with lhcb-future-clang#314
• [2017-09-17 00:03] Validation started with lhcb-future-clang#315
• [2017-09-17 00:03] Validation started with lhcb-future#537
• [2017-09-18 00:03] Validation started with lhcb-future#538
• [2017-09-18 00:04] Validation started with lhcb-future-clang#316

added 1 commit

• bba3b5a9 - clean up a helper class used in assembling the precedence trace graph

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changed the description

added 1 commit

• a5c5c3bf - clean up a helper class used in assembling the precedence trace graph

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changed the description

pinging

mentioned in merge request !397 (merged)

added 37 commits

• a5c5c3bf...f86e7684 - 23 commits from branch gaudi:master
• 13b48600 - remove obsolete method that assembles a data flow realm without data nodes, and…
• 8e85ce1b - remove a bunch of obsolete methods related to recursive-based task precedence resolution
• 609b9ad2 - remove the 'event slots' PRG class data member and cleanup related code
• 0b614632 - rename PRG's updateDecision() to accept()
• 833736ad - hide the head node member behind the get method
• c036398d - add new service: PrecedenceSvc
• 0dc0ab23 - switch the Avalanche Scheduler to use the new PrecedenceSvc
• 0474bd8e - add dumpPrecedenceTrace() to the interface and implementation of PrecedenceSvc
• fbe3ab3e - cleanup ExecutionFlowManager, removing methods unused by the ForwardScheduler
• 2125783e - add a concept of Cause to task precedence management
• 688c3ecb - add unprotected precedence tracing (to be cleaned up ..)
• de16c87e - switch to mem-init initialization of visitors and a cleanup of the visitor interface
• 66502e26 - o add switches to PrecedenceSvc to toggle the task precedence analysis;
• 47238d77 - clean up a helper class used in assembling the precedence trace graph

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changed the description

changed milestone to %v29r0

assigned to @clemenci

approved this merge request

resolved all discussions

merged