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CI Test ResultsRun: #39450972274 | Commit:
Status Overview
Legend: ✅ passed | ❌ failed | ⚪ skipped | 🚫 cancelled Summary: Total: 32 | Passed: 32 | Failed: 0 Updated: 2026-10-20 16:05:02 UTC |
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Reliability & Chaos Results✅ All reliability & chaos checks passed Pipeline: https://gitlab.ddbuild.io/DataDog/java-profiler/-/pipelines/146100486 |
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What does this PR do?:
Adds a semaphored
ddheap:alloc(address, size, weighted_bytes)USDT probe for native-memory allocation samples on Linux. Native-memory profiling now emits both JFR and USDT by default on Linux;nativememoutput=jfr|usdt|bothcan disable either destination. On unsupported platforms, explicitusdtwarns and disables native-memory profiling, while explicitbothwarns and continues with JFR only. The packaged native libraries are verified for the expected probe metadata.Motivation:
Allow external eBPF profilers to consume sampled native allocations without replacing the existing JFR output.
Additional Notes:
USDT output is Linux-only and allocation-only. Non-Linux builds retain JFR as their implicit default.
How to test the change?:
:ddprof-lib:gtestDebug_arguments_ut— 29/29 passed on macOS and Linux:ddprof-lib:gtestDebug_mallocTracer_usdt_ut— 14/14 passed on macOS; Linux-specific USDT coverage passed before the fallback-only follow-up:ddprof-lib:verifyNativeAllocationUsdtRelease— passed on LinuxspotlessApply— passedtestDebugreached 233 Java tests; only the known unrelatedTlsPrimingTestandVirtualThreadWallClockTestfailedFor Datadog employees: