)]}'
{
  "commit": "554302a04e07f4ce8c23d1c2ecdac0cc6467725f",
  "tree": "d3724ecef33312e9faeefbdeec9b324b8eae9b93",
  "parents": [
    "a6c8282bab6c2f88923ae3c671b5280975a5af6e"
  ],
  "author": {
    "name": "Matt Gilbride",
    "email": "mattgilbride@google.com",
    "time": "Fri Nov 07 07:45:34 2025 -0800"
  },
  "committer": {
    "name": "Matt Gilbride",
    "email": "mattgilbride@google.com",
    "time": "Fri Nov 07 07:45:34 2025 -0800"
  },
  "message": "jit: support for uprobe-based dynamic instrumentation\n\nIntroduce a `dynamic_instrumentation` flag to the JIT compilation\npipeline to support instrumentation of JIT-compiled methods with\nuprobes. Introduce a dedicated entrypoint (a no-op) for the same.\n\nA new flag is plumbed from `JitCompiler::CompileMethod` down to\n`CodeGeneratorARM64`. The instruction builder will now insert a call to\nthe dedicated entrypoint if the `dynamic_instrumentation` flag is\ntrue. This allows for on-demand instrumentation of JIT code without\nrequiring the process to be fully debuggable.\n\nThis functionality is exposed through\n`VMDebug.getExecutableMethodFileOffsets()`. If a method is not\nAOT-compiled, this function will now trigger a JIT compilation with\ndynamic instrumentation enabled. This allows tools like uprobes to\ninstrument methods on-demand by calling the VMDebug method.\n\nWith the method was successfully jitted with the hook inserted,\n`VMDebug_getExecutableMethodFileOffsets` will return the path to the\nentrypoint (libart.so) and the offset of the entrypoint in the .so\n\nDesign: go/hummingbird-art-jit\n\nTest: TH\nTest: atest uprobestats-art-test\nBug: 410630539\nFlag: com.android.art.rw.flags.dynamic_instrumentation_method_entry_hook\n\nChange-Id: Ifb0649d2c00fbf81650a05b429a73ccb4ec11ef3",
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