Fix global priority sampling

[bwoebi]

The global priority sampling was not recognized as explicit sampling and thus ignored.

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-07-15 18:13:41

Comparing candidate commit 2999e5c in PR branch bob/fix-global-priority-sampling with baseline commit 4c3832d in branch master.

Found 1 performance improvements and 2 performance regressions! Performance is the same for 175 metrics, 0 unstable metrics.

scenario:PDOBench/benchPDOOverhead

• 🟥 execution_time [+9.861µs; +16.238µs] or [+3.615%; +5.953%]

scenario:PDOBench/benchPDOOverheadWithDBM

• 🟥 execution_time [+10.665µs; +16.878µs] or [+3.586%; +5.675%]

scenario:TraceSerializationBench/benchSerializeTrace

• 🟩 execution_time [-9.918µs; -6.582µs] or [-4.995%; -3.315%]

[pablomartinezbernardo]

I'm sure you have already seen it, but some snapshots need updating it seems

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.96%. Comparing base (4c3832d) to head (2999e5c).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #2728   +/-   ##
=========================================
  Coverage     77.96%   77.96%           
  Complexity     2216     2216           
=========================================
  Files           227      227           
  Lines         26643    26644    +1     
  Branches        989      989           
=========================================
+ Hits          20771    20772    +1     
  Misses         5346     5346           
  Partials        526      526           

Flag	Coverage Δ
appsec-extension	69.19% <ø> (ø)
tracer-extension	78.81% <100.00%> (+<0.01%)	⬆️
tracer-php	80.55% <100.00%> (ø)

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Files	Coverage Δ
ext/serializer.c	81.27% <100.00%> (+0.01%)	⬆️
src/DDTrace/Span.php	79.45% <100.00%> (ø)
src/DDTrace/Tracer.php	82.43% <100.00%> (ø)

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