Add Thread.sleep TaskBlock profiling instrumentation

[kaahos]

What Does This Do

Adds TaskBlock profiling for Thread.sleep and TimeUnit.sleep by rewriting sleep call sites and emitting deferred TaskBlock events with profiling context.

Motivation

Capturing sleep intervals as TaskBlock events makes that waiting time explicit in wall-clock profiles.

Additional Notes

• Stacked on: Add LockSupport TaskBlock profiling instrumentation #11545

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Jira ticket: [PROJ-IDENT]

[dd-octo-sts]

🔴 Java Benchmark SLOs — Performance SLO breach detected

Suite	Status
Startup	🔴 breach

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	14.73 s	14.56 s	[+0.4%; +1.9%] (maybe worse)
startup:insecure-bank:tracing:Agent	13.49 s	13.68 s	[-2.2%; -0.6%] (maybe better)
startup:petclinic:appsec:Agent	16.74 s	16.19 s	[-1.1%; +7.8%] (no difference)
startup:petclinic:iast:Agent	16.92 s	16.92 s	[-1.0%; +1.0%] (no difference)
startup:petclinic:profiling:Agent	16.71 s	16.54 s	[-0.2%; +2.3%] (no difference)
startup:petclinic:sca:Agent	16.40 s	16.72 s	[-6.3%; +2.5%] (no difference)
startup:petclinic:tracing:Agent	16.06 s	16.25 s	[-2.0%; -0.3%] (maybe better)

Commit: 6d440fc6 · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.

[dd-octo-sts]

❌ New Groovy Files Detected

Please avoid introducing new .groovy files to this repository.

• dd-java-agent/instrumentation/datadog/profiling/lock-support/src/test/groovy/LockSupportProfilingDisabledForkedTest.groovy
• dd-java-agent/instrumentation/datadog/profiling/lock-support/src/test/groovy/LockSupportProfilingInstrumentationForkedTest.groovy

Instead, rewrite the new file(s) in Java / JUnit. See the How to Test With JUnit Guide for more details.

If this PR needs an exception, add the tag: override groovy enforcement label to bypass this workflow.