{"type":"queue-operation","operation":"enqueue","timestamp":"2026-10-19T14:13:34.674Z","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2","content":"{\n  \"round\": 3,\n  \"total_samples\": 194,\n  \"c2_defaults\": {\"MaxInlineSize\": 35, \"FreqInlineSize\": 325, \"InlineSmallCode\": 2500, \"MaxInlineLevel\": 15, \"LoopUnrollLimit\": 60, \"LoopMaxUnroll\": 32},\n  \"applied_hints\": [\"inline Simulation::runTrajectory Simulation::step\"],\n  \"methods\": [\n    {\"name\": \"Simulation::runSumArray\", \"signature\": \"()V\", \"samples\": 97, \"bytecode_size\": 20,\n     \"has_loops\": true, \"osr\": true, \"c2_code_bytes\": 720, \"invocations\": 1, \"backedges\": 118896,\n     \"calls\": [\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::sumArray\", \"count\": 57343, \"callee_bytecode_size\": 25, \"callee_has_loops\": true, \"callee_c2_code_bytes\": 592, \"inlined\": true},\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::record\", 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\"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::step\", \"callee\": \"Simulation$Vec::<init>\", \"count\": 14179, \"callee_bytecode_size\": 21, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation$Vec::<init>\", \"callee\": \"java.lang.Record::<init>\", \"count\": 14180, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 112, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::increment\", \"callee\": \"java.util.concurrent.atomic.LongAdder::add\", \"count\": 112270, \"callee_bytecode_size\": 96, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 208, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::add\", \"callee\": \"java.util.concurrent.atomic.Striped64::casBase\", \"count\": 7819, \"callee_bytecode_size\": 10, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 128, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleGuards::guard_LJJ_Z\", \"callee\": \"java.lang.invoke.VarHandle::checkAccessModeThenIsDirect\", \"count\": 7770, \"callee_bytecode_size\": 29, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleGuards::guard_LJJ_Z\", \"callee\": \"java.lang.invoke.VarForm::getMemberName\", \"count\": 7770, \"callee_bytecode_size\": 38, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleLongs$FieldInstanceReadWrite::weakCompareAndSetRelease\", \"callee\": \"java.util.Objects::requireNonNull\", \"count\": 7598, \"callee_bytecode_size\": 14, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 104, \"inlined\": true}]}\n  ]\n}\n"}
{"type":"queue-operation","operation":"dequeue","timestamp":"2026-10-19T14:13:34.677Z","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2"}
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{"parentUuid":"5bdf0e5f-897e-4b57-a8ef-2f97b4f422c0","isSidechain":false,"attachment":{"type":"prompt_snapshot","systemPrompt":["You tune the HotSpot C2 JIT compiler for a running Java program.\n\nYou get a JSON profile of the hottest C2-compiled methods, sampled while the\nprogram runs. For each method: its share of samples, bytecode size, whether it\nhas loops, and every call site in the method and in the code C2 already\ninlined into it, with profiled call counts, callee bytecode sizes, whether the\ncallee has loops, and whether C2 inlined the callee. Calls that C2 replaces\nwith hand-written code (intrinsics) are not listed. C2's default thresholds\nare in c2_defaults.\n\nYou may emit two kinds of hints, one per line:\n  inline <method> <callee>   force C2 to inline <callee> when compiling <method>\n  unroll <method> <limit>    LoopUnrollLimit (max loop body size in IR nodes,\n                             8..600) when compiling <method>\n<method> must be a \"name\" from \"methods\" and <callee> a \"callee\" listed in that\nmethod's \"calls\", copied exactly.\n\nA hint never changes program results, but each one costs a recompilation and a\nbad one can slow the program down. Only hint where the profile gives a concrete\nreason, for example:\n- a hot call site that C2 did not inline because the callee is above\n  FreqInlineSize; inlining removes call overhead and lets escape analysis\n  remove allocations of objects the callee returns;\n- a hot loop whose body is likely above LoopUnrollLimit and is not\n  vectorizable (e.g. table lookups or loop-carried state).\nDo not repeat anything in \"applied_hints\". Emitting no hints is fine.\n\nBefore each hint write one line starting with '#' giving the reason.\nOutput nothing else: no prose, no markdown."],"reminderFold":false,"echoWireToolInputs":true,"contextRendering":"announced"},"type":"attachment","uuid":"918d0688-6202-45bc-8c97-44d3416d8998","timestamp":"2026-10-19T14:13:34.783Z","userType":"external","entrypoint":"sdk-cli","cwd":"/tmp","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2","version":"2.1.303","gitBranch":"HEAD"}
{"type":"api-request-shape","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2","shapeHash":"bc9bc4778296996ea9363236423eabe87bb200d1474ed0991e49b4848d008aa5","timestamp":"2026-10-19T14:13:34.813Z","version":"2.1.303","shape":{"system":[{"type":"text","text":"You are a Claude agent, built on Anthropic's Claude Agent SDK."},{"type":"text","text":"You tune the HotSpot C2 JIT compiler for a running Java program.\n\nYou get a JSON profile of the hottest C2-compiled methods, sampled while the\nprogram runs. For each method: its share of samples, bytecode size, whether it\nhas loops, and every call site in the method and in the code C2 already\ninlined into it, with profiled call counts, callee bytecode sizes, whether the\ncallee has loops, and whether C2 inlined the callee. Calls that C2 replaces\nwith hand-written code (intrinsics) are not listed. C2's default thresholds\nare in c2_defaults.\n\nYou may emit two kinds of hints, one per line:\n  inline <method> <callee>   force C2 to inline <callee> when compiling <method>\n  unroll <method> <limit>    LoopUnrollLimit (max loop body size in IR nodes,\n                             8..600) when compiling <method>\n<method> must be a \"name\" from \"methods\" and <callee> a \"callee\" listed in that\nmethod's \"calls\", copied exactly.\n\nA hint never changes program results, but each one costs a recompilation and a\nbad one can slow the program down. Only hint where the profile gives a concrete\nreason, for example:\n- a hot call site that C2 did not inline because the callee is above\n  FreqInlineSize; inlining removes call overhead and lets escape analysis\n  remove allocations of objects the callee returns;\n- a hot loop whose body is likely above LoopUnrollLimit and is not\n  vectorizable (e.g. table lookups or loop-carried state).\nDo not repeat anything in \"applied_hints\". Emitting no hints is fine.\n\nBefore each hint write one line starting with '#' giving the reason.\nOutput nothing else: no prose, no markdown."}],"tools":[]}}
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It describes the user's own account and workspace, so they don't need it reported back.\n</system-reminder>\n"},{"type":"text","text":"{\n  \"round\": 3,\n  \"total_samples\": 194,\n  \"c2_defaults\": {\"MaxInlineSize\": 35, \"FreqInlineSize\": 325, \"InlineSmallCode\": 2500, \"MaxInlineLevel\": 15, \"LoopUnrollLimit\": 60, \"LoopMaxUnroll\": 32},\n  \"applied_hints\": [\"inline Simulation::runTrajectory Simulation::step\"],\n  \"methods\": [\n    {\"name\": \"Simulation::runSumArray\", \"signature\": \"()V\", \"samples\": 97, \"bytecode_size\": 20,\n     \"has_loops\": true, \"osr\": true, \"c2_code_bytes\": 720, \"invocations\": 1, \"backedges\": 118896,\n     \"calls\": [\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::sumArray\", \"count\": 57343, \"callee_bytecode_size\": 25, \"callee_has_loops\": true, \"callee_c2_code_bytes\": 592, \"inlined\": true},\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::record\", \"count\": 57343, \"callee_bytecode_size\": 25, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 288, \"inlined\": true},\n       {\"caller\": \"Simulation::record\", \"callee\": \"java.util.concurrent.atomic.LongAdder::increment\", \"count\": 112269, \"callee_bytecode_size\": 6, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::increment\", \"callee\": \"java.util.concurrent.atomic.LongAdder::add\", \"count\": 112270, \"callee_bytecode_size\": 96, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 208, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::add\", \"callee\": \"java.util.concurrent.atomic.Striped64::casBase\", \"count\": 7819, \"callee_bytecode_size\": 10, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 128, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleGuards::guard_LJJ_Z\", \"callee\": 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\"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::trajectory\", \"callee\": \"Simulation$Vec::z\", \"count\": 194502, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::record\", \"callee\": \"java.util.concurrent.atomic.LongAdder::increment\", \"count\": 112269, \"callee_bytecode_size\": 6, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::step\", \"callee\": \"Simulation$Vec::x\", \"count\": 14179, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::step\", \"callee\": \"Simulation$Vec::y\", \"count\": 14179, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::step\", \"callee\": \"Simulation$Vec::z\", \"count\": 14179, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation::step\", \"callee\": \"Simulation$Vec::<init>\", \"count\": 14179, \"callee_bytecode_size\": 21, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"Simulation$Vec::<init>\", \"callee\": \"java.lang.Record::<init>\", \"count\": 14180, \"callee_bytecode_size\": 5, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 112, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::increment\", \"callee\": \"java.util.concurrent.atomic.LongAdder::add\", \"count\": 112270, \"callee_bytecode_size\": 96, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 208, \"inlined\": true},\n       {\"caller\": \"java.util.concurrent.atomic.LongAdder::add\", \"callee\": \"java.util.concurrent.atomic.Striped64::casBase\", \"count\": 7819, \"callee_bytecode_size\": 10, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 128, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleGuards::guard_LJJ_Z\", \"callee\": \"java.lang.invoke.VarHandle::checkAccessModeThenIsDirect\", \"count\": 7770, \"callee_bytecode_size\": 29, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleGuards::guard_LJJ_Z\", \"callee\": \"java.lang.invoke.VarForm::getMemberName\", \"count\": 7770, \"callee_bytecode_size\": 38, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 0, \"inlined\": true},\n       {\"caller\": \"java.lang.invoke.VarHandleLongs$FieldInstanceReadWrite::weakCompareAndSetRelease\", \"callee\": \"java.util.Objects::requireNonNull\", \"count\": 7598, \"callee_bytecode_size\": 14, \"callee_has_loops\": false, \"callee_c2_code_bytes\": 104, \"inlined\": true}]}\n  ]\n}\n"}]}}
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{"parentUuid":"c2d9442f-b5c4-40d7-b66e-bbf2075f362b","isSidechain":false,"attachment":{"type":"prompt_snapshot","systemPrompt":["You tune the HotSpot C2 JIT compiler for a running Java program.\n\nYou get a JSON profile of the hottest C2-compiled methods, sampled while the\nprogram runs. For each method: its share of samples, bytecode size, whether it\nhas loops, and every call site in the method and in the code C2 already\ninlined into it, with profiled call counts, callee bytecode sizes, whether the\ncallee has loops, and whether C2 inlined the callee. Calls that C2 replaces\nwith hand-written code (intrinsics) are not listed. C2's default thresholds\nare in c2_defaults.\n\nYou may emit two kinds of hints, one per line:\n  inline <method> <callee>   force C2 to inline <callee> when compiling <method>\n  unroll <method> <limit>    LoopUnrollLimit (max loop body size in IR nodes,\n                             8..600) when compiling <method>\n<method> must be a \"name\" from \"methods\" and <callee> a \"callee\" listed in that\nmethod's \"calls\", copied exactly.\n\nA hint never changes program results, but each one costs a recompilation and a\nbad one can slow the program down. Only hint where the profile gives a concrete\nreason, for example:\n- a hot call site that C2 did not inline because the callee is above\n  FreqInlineSize; inlining removes call overhead and lets escape analysis\n  remove allocations of objects the callee returns;\n- a hot loop whose body is likely above LoopUnrollLimit and is not\n  vectorizable (e.g. table lookups or loop-carried state).\nDo not repeat anything in \"applied_hints\". Emitting no hints is fine.\n\nBefore each hint write one line starting with '#' giving the reason.\nOutput nothing else: no prose, no markdown."],"tools":[],"cliPrefix":"You are a Claude agent, built on Anthropic's Claude Agent SDK.","reminderFold":false,"systemTurns":true,"toolChangeHeader":true,"inlineTools":true,"keptReminders":true,"echoWireToolInputs":true,"contextRendering":"announced"},"type":"attachment","uuid":"a0e87916-4314-4beb-b66d-4df5bbd49824","timestamp":"2026-10-19T14:13:37.952Z","userType":"external","entrypoint":"sdk-cli","cwd":"/tmp","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2","version":"2.1.303","gitBranch":"HEAD"}
{"parentUuid":"a0e87916-4314-4beb-b66d-4df5bbd49824","isSidechain":false,"promptId":"d197fceb-1faf-44b6-a5ad-50a79e8a23ce","type":"user","message":{"role":"user","content":"[Your previous response had no visible output. Please continue and produce a user-visible response.]"},"isMeta":true,"turnCompanion":true,"uuid":"fbd88c07-3199-4c54-903b-6cf45077b9f1","timestamp":"2026-10-19T14:13:37.953Z","userType":"external","entrypoint":"sdk-cli","cwd":"/tmp","sessionId":"39e4d74d-1e6d-4c50-b88e-b4a5776d55c2","version":"2.1.303","gitBranch":"HEAD"}
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It describes the user's own account and workspace, so they don't need it reported back.\n</system-reminder>\n"},{"type":"text","text":"{\n  \"round\": 3,\n  \"total_samples\": 194,\n  \"c2_defaults\": {\"MaxInlineSize\": 35, \"FreqInlineSize\": 325, \"InlineSmallCode\": 2500, \"MaxInlineLevel\": 15, \"LoopUnrollLimit\": 60, \"LoopMaxUnroll\": 32},\n  \"applied_hints\": [\"inline Simulation::runTrajectory Simulation::step\"],\n  \"methods\": [\n    {\"name\": \"Simulation::runSumArray\", \"signature\": \"()V\", \"samples\": 97, \"bytecode_size\": 20,\n     \"has_loops\": true, \"osr\": true, \"c2_code_bytes\": 720, \"invocations\": 1, \"backedges\": 118896,\n     \"calls\": [\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::sumArray\", \"count\": 57343, \"callee_bytecode_size\": 25, \"callee_has_loops\": true, \"callee_c2_code_bytes\": 592, \"inlined\": true},\n       {\"caller\": \"Simulation::runSumArray\", \"callee\": \"Simulation::record\", \"count\": 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