HltEventLoopMgr: add option to run algs/sequences during start

Add the execAtStart property that can be used to specify a list of algorithms/sequences that should be executed at the end of the prepareForRun transition. This can e.g. be used to execute all CondAlgs once before the first event to improve memory sharing:

ServiceMgr.HltEventLoopMgr.execAtStart = ['AthCondSeq']

Relates to ATR-26138.

assigned to @fwinkl

This merge request affects 1 package:

• HLT/Trigger/TrigControl/TrigServices

This merge request affects 2 files:

• HLT/Trigger/TrigControl/TrigServices/src/HltEventLoopMgr.cxx
• HLT/Trigger/TrigControl/TrigServices/src/HltEventLoopMgr.h

Adding @wiedenma ,@bernius ,@fwinkl ,@rbielski as watchers

added 22.0 Trigger review-pending-level-1 labels

The system determined that CI tests (with names matching "^CITest_SimulationRun(2|3)FullSim.*$") are not needed for this code change. They are not run. This is not an indicator to restart the job.

CI Result FAILURE (hash 053d8159)

	Athena	DetCommon
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 57173]

Jenkins please retry a build

This merge request affects 1 package:

• HLT/Trigger/TrigControl/TrigServices

This merge request affects 2 files:

• HLT/Trigger/TrigControl/TrigServices/src/HltEventLoopMgr.cxx
• HLT/Trigger/TrigControl/TrigServices/src/HltEventLoopMgr.h

Adding @wiedenma ,@bernius ,@fwinkl ,@rbielski as watchers

The system determined that CI tests (with names matching "^CITest_SimulationRun(2|3)FullSim.*$") are not needed for this code change. They are not run. This is not an indicator to restart the job.

CI Result SUCCESS (hash 053d8159)

	Athena	DetCommon
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 57186]

lgtm approving -- L1

added review-approved label and removed review-pending-level-1 label

added review-approved-point1 label

added review-approved-tier0 label

mentioned in commit 9e86f50c

merged

mentioned in merge request !55813 (merged)