| { |
| "program_id": "02_multiple_goroutines", |
| "program_source": "// WEAVE_META\n// outcome: success\n// concurrency_pattern: fanout\n// goroutine_count: 4\n// expected_nondeterminism: medium\n// description: main fans out work to three goroutines and collects results through a shared results channel.\n\npackage main\n\nimport (\n\t\"fmt\"\n\t\"os\"\n\t\"runtime/trace\"\n\t\"sync\"\n)\n\nfunc main() {\n\tif tf := os.Getenv(\"WEAVE_TRACE_FILE\"); tf != \"\" {\n\t\tf, err := os.Create(tf)\n\t\tif err == nil {\n\t\t\tif err := trace.Start(f); err == nil {\n\t\t\t\tdefer func() { trace.Stop(); f.Close() }()\n\t\t\t}\n\t\t}\n\t}\n\n\tjobs := []int{10, 20, 30}\n\tresults := make(chan int, len(jobs))\n\tvar wg sync.WaitGroup\n\n\tfor _, j := range jobs {\n\t\twg.Add(1)\n\t\tgo func(n int) {\n\t\t\tdefer wg.Done()\n\t\t\tresults \u003c- n * n\n\t\t}(j)\n\t}\n\n\tgo func() {\n\t\twg.Wait()\n\t\tclose(results)\n\t}()\n\n\tfor r := range results {\n\t\tfmt.Println(r)\n\t}\n}\n", |
| "partial_trace": [ |
| { |
| "event_id": 0, |
| "timestamp_ns": 14703706862208, |
| "event_type": "GoCreate", |
| "goroutine_id": 7, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "7": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.traceStartReadCPU" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 1, |
| "timestamp_ns": 14703706868032, |
| "event_type": "GoCreate", |
| "goroutine_id": 8, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "7": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.traceStartReadCPU" |
| }, |
| "8": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.(*traceAdvancerState).start" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 2, |
| "timestamp_ns": 14703706878656, |
| "event_type": "GoCreate", |
| "goroutine_id": 9, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "7": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.traceStartReadCPU" |
| }, |
| "8": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 3, |
| "timestamp_ns": 14703706885696, |
| "event_type": "GoCreate", |
| "goroutine_id": 10, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "10": { |
| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "7": { |
| "status": "runnable", |
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| }, |
| "8": { |
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| "blocked_on": null, |
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| }, |
| "9": { |
| "status": "runnable", |
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| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 4, |
| "timestamp_ns": 14703706889920, |
| "event_type": "GoCreate", |
| "goroutine_id": 11, |
| "goroutines": { |
| "1": { |
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| "locals_hint": "unknown" |
| }, |
| "10": { |
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| "11": { |
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| "7": { |
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| }, |
| "8": { |
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| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
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| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 5, |
| "timestamp_ns": 14703706890816, |
| "event_type": "GoCreate", |
| "goroutine_id": 12, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "10": { |
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| }, |
| "12": { |
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| "7": { |
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| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 6, |
| "timestamp_ns": 14703706891904, |
| "event_type": "GoCreate", |
| "goroutine_id": 13, |
| "goroutines": { |
| "1": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "10": { |
| "status": "runnable", |
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| "12": { |
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| }, |
| "13": { |
| "status": "runnable", |
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| }, |
| "7": { |
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| }, |
| "8": { |
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| "blocked_on": null, |
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| }, |
| "9": { |
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| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 7, |
| "timestamp_ns": 14703706893952, |
| "event_type": "GoBlock", |
| "goroutine_id": 1, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
| "status": "runnable", |
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| }, |
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| }, |
| "13": { |
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| }, |
| "7": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.traceStartReadCPU" |
| }, |
| "8": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 8, |
| "timestamp_ns": 14703706894464, |
| "event_type": "GoStart", |
| "goroutine_id": 7, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "11": { |
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| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "12": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "7": { |
| "status": "running", |
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| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 9, |
| "timestamp_ns": 14703706894528, |
| "event_type": "GoStart", |
| "goroutine_id": 13, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
| "status": "runnable", |
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| }, |
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| "locals_hint": "main.main" |
| }, |
| "12": { |
| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "7": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "runnable", |
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| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 10, |
| "timestamp_ns": 14703706903616, |
| "event_type": "GoBlock", |
| "goroutine_id": 13, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
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| }, |
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| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "12": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "blocked", |
| "blocked_on": "sync", |
| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime.(*traceAdvancerState).start" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 11, |
| "timestamp_ns": 14703706904192, |
| "event_type": "GoStart", |
| "goroutine_id": 8, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
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| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "11": { |
| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "12": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "blocked", |
| "blocked_on": "sync", |
| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "9": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "runtime/trace.(*traceMultiplexer).startLocked" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 12, |
| "timestamp_ns": 14703706916032, |
| "event_type": "GoStart", |
| "goroutine_id": 9, |
| "goroutines": { |
| "1": { |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv2" |
| }, |
| "10": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "11": { |
| "status": "runnable", |
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| "locals_hint": "main.main" |
| }, |
| "12": { |
| "status": "runnable", |
| "blocked_on": null, |
| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "blocked", |
| "blocked_on": "sync", |
| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| }, |
| "9": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 13, |
| "timestamp_ns": 14703706925248, |
| "event_type": "GoBlock", |
| "goroutine_id": 8, |
| "goroutines": { |
| "1": { |
| "status": "blocked", |
| "blocked_on": "chan receive", |
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| }, |
| "13": { |
| "status": "blocked", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
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| "8": { |
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| }, |
| "9": { |
| "status": "running", |
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| "locals_hint": "unknown" |
| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 14, |
| "timestamp_ns": 14703706925504, |
| "event_type": "GoStart", |
| "goroutine_id": 11, |
| "goroutines": { |
| "1": { |
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| }, |
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| }, |
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| "locals_hint": "main.main" |
| }, |
| "13": { |
| "status": "blocked", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
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| "locals_hint": "unknown" |
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| "8": { |
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| }, |
| "9": { |
| "status": "running", |
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| "locals_hint": "unknown" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 15, |
| "timestamp_ns": 14703706931456, |
| "event_type": "GoUnblock", |
| "goroutine_id": 1, |
| "goroutines": { |
| "1": { |
| "status": "runnable", |
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| "locals_hint": "runtime.chansend1" |
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| }, |
| "13": { |
| "status": "blocked", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
| }, |
| "7": { |
| "status": "running", |
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| "locals_hint": "unknown" |
| }, |
| "8": { |
| "status": "blocked", |
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| "locals_hint": "runtime.chanrecv1" |
| }, |
| "9": { |
| "status": "running", |
| "blocked_on": null, |
| "locals_hint": "unknown" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 16, |
| "timestamp_ns": 14703706933248, |
| "event_type": "GoEnd", |
| "goroutine_id": 11, |
| "goroutines": { |
| "1": { |
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| "13": { |
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| "9": { |
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| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 17, |
| "timestamp_ns": 14703706933632, |
| "event_type": "GoStart", |
| "goroutine_id": 1, |
| "goroutines": { |
| "1": { |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv1" |
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| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 18, |
| "timestamp_ns": 14703706941696, |
| "event_type": "GoBlock", |
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| "blocked_on": "chan receive", |
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| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 19, |
| "timestamp_ns": 14703706942208, |
| "event_type": "GoStart", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
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| "locals_hint": "runtime.chanrecv1" |
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| "locals_hint": "runtime.chanrecv1" |
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| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 20, |
| "timestamp_ns": 14703706950784, |
| "event_type": "GoEnd", |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv1" |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv1" |
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| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 21, |
| "timestamp_ns": 14703706955968, |
| "event_type": "GoBlock", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
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| "7": { |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv1" |
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| "8": { |
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| "blocked_on": "chan receive", |
| "locals_hint": "runtime.chanrecv1" |
| }, |
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| "locals_hint": "syscall.syscall" |
| } |
| }, |
| "channels": {}, |
| "mutexes": {} |
| }, |
| { |
| "event_id": 22, |
| "timestamp_ns": 14703706988864, |
| "event_type": "GoStart", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
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| "locals_hint": "runtime.chanrecv1" |
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| "8": { |
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| } |
| }, |
| "channels": {}, |
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| { |
| "event_id": 23, |
| "timestamp_ns": 14703706989440, |
| "event_type": "GoStart", |
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| "13": { |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
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| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 24, |
| "timestamp_ns": 14703706991360, |
| "event_type": "GoBlock", |
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| "8": { |
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| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 25, |
| "timestamp_ns": 14703706995840, |
| "event_type": "GoStart", |
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| "locals_hint": "sync.(*WaitGroup).Wait" |
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| }, |
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| } |
| }, |
| "channels": {}, |
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| }, |
| { |
| "event_id": 26, |
| "timestamp_ns": 14703706996416, |
| "event_type": "GoBlock", |
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| }, |
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| } |
| }, |
| "channels": {}, |
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| } |
| ], |
| "next_event": { |
| "event_id": 27, |
| "timestamp_ns": 14703706998720, |
| "event_type": "GoUnblock", |
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| } |
| }, |
| "channels": {}, |
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| }, |
| "full_outcome": "success", |
| "concurrency_pattern": "fanout", |
| "goroutine_count": 4, |
| "nondeterminism": "medium", |
| "run_index": 2, |
| "split_percent": 75, |
| "timed_out": false |
| } |
