| // Copyright 2023 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Regression test for an issue found in development. |
| // |
| // GoCreate events can happen on bare Ps in a variety of situations and |
| // and earlier version of the parser assumed this wasn't possible. At |
| // the time of writing, one such example is goroutines created by expiring |
| // timers. |
| |
| package main |
| |
| import ( |
| "internal/trace/v2" |
| "internal/trace/v2/event/go122" |
| testgen "internal/trace/v2/internal/testgen/go122" |
| ) |
| |
| func main() { |
| testgen.Main(gen) |
| } |
| |
| func gen(t *testgen.Trace) { |
| g1 := t.Generation(1) |
| |
| // A goroutine gets created on a running P, then starts running. |
| b0 := g1.Batch(trace.ThreadID(0), 0) |
| b0.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning) |
| b0.Event("GoCreate", trace.GoID(5), testgen.NoStack, testgen.NoStack) |
| b0.Event("GoStart", trace.GoID(5), testgen.Seq(1)) |
| b0.Event("GoStop", "whatever", testgen.NoStack) |
| } |
