Fix initialisation / deactivation of XercesC in OMTF emulator code

[mbluj]

PR description:

This fixes a segmentation violation issue caused by direct initialisation / deactivation of XercesC in OMTF emulator code reported in #48090.
As proposed in #48090 direct calls of XMLPlatformUtils::Initialize()/Terminate() are replaced by calls with the cms::concurrency::xercesInitialize()/xercesTerminate().

PR validation:

Tested with WFs 145.005, 145.006 with 4 threads: runTheMatrix.py --nThreads 4 -l 145.005,145.006 -i all --ibeos

Should it be backported to 15_0_X (other?)

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-48160/44932

[cmsbuild]

A new Pull Request was created by @mbluj for master.

It involves the following packages:

• L1Trigger/L1TCommon (l1)
• L1Trigger/L1TMuonOverlap (l1)
• L1Trigger/L1TMuonOverlapPhase1 (l1)

@BenjaminRS, @cmsbuild, @quinnanm can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @dinyar, @eyigitba, @missirol, @mmusich, @thomreis this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[quinnanm]

Please test

[cmsbuild]

+1

Size: This PR adds an extra 44KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-02f26c/46346/summary.html
COMMIT: e1b3b3e
CMSSW: CMSSW_15_1_X_2025-05-23-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/48160/46346/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 50
• DQMHistoTests: Total histograms compared: 4038193
• DQMHistoTests: Total failures: 22
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4038151
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 49 files compared)
• Checked 215 log files, 184 edm output root files, 50 DQM output files
• TriggerResults: no differences found

[quinnanm]

+l1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @rappoccio, @mandrenguyen, @sextonkennedy, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[mandrenguyen]

+1

[mbluj]

Hi @BenjaminRS, @quinnanm, could you confirm that a backport of this fix to 15_ 0 (or older) is not needed? Thanks.

[BenjaminRS]

@iarspider -- can you perhaps comment here please? Do we need a backport of this fix for 15_0_X or previous releases?

[iarspider]

@BenjaminRS no idea, unfortunately. Maybe @cms-sw/orp-l2 can comment?

[mandrenguyen]

@BenjaminRS no idea, unfortunately. Maybe @cms-sw/orp-l2 can comment?

Looks like it wouldn't hurt. Might as well avoid relval issues in the production release.

[mbluj]

@BenjaminRS no idea, unfortunately. Maybe @cms-sw/orp-l2 can comment?

Looks like it wouldn't hurt. Might as well avoid relval issues in the production release.

OK, I will backport it shortly then.