Fix #1023

[dlyr]

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [x] Docs have been added / updated (for bug fixes / features)

Be aware that the PR request cannot be accepted if it doesn't pass the Continuous Integration tests.

• What kind of change does this PR introduce?

  • [x] bug fix
  • [ ] feature
  • [ ] docs update
  • [ ] other:

• What is the current behavior? (You can also link to an open issue here) There is a concurrency problem in task queue, when worker idle wainting for task, they can steal task from runTaskInThisThread. Moreover, if registerTask is not renetrant, and can cause task incoherency if task are added to one queue from different threads. Fix #1023

[codecov[bot]]

Codecov Report

Merging #1024 (69323dc) into release-candidate (af38ec3) will increase coverage by 0.00%. The diff coverage is 71.42%.

:exclamation: Current head 69323dc differs from pull request most recent head e0e6203. Consider uploading reports for the commit e0e6203 to get more accurate results

@@                Coverage Diff                 @@
##           release-candidate    #1024   +/-   ##
==================================================
  Coverage              44.51%   44.52%           
==================================================
  Files                    337      337           
  Lines                  22477    22486    +9     
==================================================
+ Hits                   10006    10011    +5     
- Misses                 12471    12475    +4     

Impacted Files	Coverage Δ
src/Engine/RadiumEngine.hpp	100.00% <ø> (ø)
src/Core/Tasks/TaskQueue.cpp	81.00% <71.42%> (-1.35%)	:arrow_down:

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[hiergaut]

It's ok for me, no segmentation fault detected on my linux machine.

[hiergaut]

The CI jobs was cancelled on macOS, how to get these jobs going again ?