Respect the user-provided number of entries to be displayed

[vepadulano]

Fixes #11390

Improves the workflow of DisplayHelper::Exec as follows:

1. We always check whether there are entries to be displayed with RDisplay::HasNext. If so, add one row to the display object
2. If no more entries should be displayed, signal this node has finished its job. Make sure the call to StopProcessing is done only once with a boolean flag, to avoid early stop of the execution due to more stop signals than the children who actually have finished their job.

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on mac11/cxx14. Running on macphsft23.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Warnings:

• [2022-09-21T09:35:02.116Z] /Users/sftnight/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'N' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T09:35:02.116Z] /Users/sftnight/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'N' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T09:35:02.116Z] /Users/sftnight/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'iStride' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T09:35:02.116Z] /Users/sftnight/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'iStride' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]

[phsft-bot]

Build failed on mac1015/cxx17. Running on macitois21.dyndns.cern.ch:/Users/sftnight/build/workspace/root-pullrequests-build See console output.

Warnings:

• [2022-09-21T14:44:20.184Z] /Volumes/HD2/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'N' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T14:44:20.184Z] /Volumes/HD2/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'N' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T14:44:20.184Z] /Volumes/HD2/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'iStride' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
• [2022-09-21T14:44:20.184Z] /Volumes/HD2/build/workspace/root-pullrequests-build/root/tmva/sofie/inc/TMVA/ROperator_Softmax.hxx:97:21: warning: variable 'iStride' is used uninitialized whenever '&&' condition is false [-Wsometimes-uninitialized]

Failing tests:

• projectroot.gui.webdisplay.test.test_webgui_ping

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3. Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build See console output.

Errors:

• [2022-10-04T14:00:30.366Z] FAILED: lib/modules.idx

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3. Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build See console output.

Errors:

• [2022-10-04T14:10:23.098Z] FAILED: lib/modules.idx

[pcanal]

PR build will fail because of missing: https://github.com/root-project/root/pull/11490, so cancelling for now.

[pcanal]

@phsft-bot build

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3. Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build See console output.

Errors:

• [2022-10-04T14:44:17.961Z] FAILED: tmva/sofie/test/CMakeFiles/SofieCompileModels_ROOT.util

[phsft-bot]

Build failed on windows10/cxx14. Running on null:C:\build\workspace\root-pullrequests-build See console output.

Failing tests:

• projectroot.bindings.pyroot.pythonizations.test.pyunittests_pyroot_pyz_rtensor

[vepadulano]

@phsft-bot build

[phsft-bot]

Starting build on ROOT-debian10-i386/soversion, ROOT-performance-centos8-multicore/cxx17, ROOT-ubuntu18.04/nortcxxmod, ROOT-ubuntu2004/python3, mac1015/cxx17, mac11/cxx14, windows10/cxx14 How to customize builds

[phsft-bot]

Build failed on ROOT-ubuntu2004/python3. Running on root-ubuntu-2004-1.cern.ch:/home/sftnight/build/workspace/root-pullrequests-build See console output.

Errors:

• [2022-10-05T07:16:02.896Z] FAILED: tmva/sofie/test/CMakeFiles/SofieCompileModels_ROOT.util

[phsft-bot]

Build failed on windows10/cxx14. Running on null:C:\build\workspace\root-pullrequests-build See console output.