Add EventView handling to AvalancheScheduler

Mostly discussed here: https://its.cern.ch/jira/browse/GAUDI-1306

Recent design presentation https://indico.cern.ch/event/632442/contributions/2718811/attachments/1526541/2387104/EventViews.pdf

Older, introductory material https://indico.cern.ch/event/578275/contributions/2342808/attachments/1416698/2169616/EventViews.pdf

Adds a method to IScheduler.h to attach EventViews to the PrecedenceRulesGraph, so that parts of the graph can be processed multiple times per event (or skipped entirely).

No measurable performance impact for non-view workloads.

May require resolution of other MRs such as !449 (closed)

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• d9a0c1f0...50af8974 - 11 commits from branch gaudi:master
• aa3898ff - Merge remote-tracking branch 'upstream/master' into ScheduleEventViews

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• 53f9db66 - Formatting changed magically - make apply-formatting seems to work...

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changed the description

added backport to v29 task scheduling labels

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• 53f9db66...a1f1375a - 36 commits from branch gaudi:master
• 80ad7f7e - Merge remote-tracking branch 'upstream/master' into ScheduleEventViews
• b918b94d - Merge remote-tracking branch 'upstream/master' into ScheduleEventViews
• 1d7cb548 - Re-arranged the code to avoid needing slotAscend() and slotDescend().…

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• 1d7cb548...339e7bf8 - 14 commits from branch gaudi:master
• bfc2b028 - Merge remote-tracking branch 'upstream/master' into ScheduleEventViews

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resolved all discussions

resolved all discussions

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• 77564801 - Pointers initialised with nullptr

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• 1b161ad8 - I forgot to re-include protection for DecisionNodes within views

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assigned to @clemenci

approved this merge request

mentioned in commit 097a8a29

merged

mentioned in merge request !539 (merged)