1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
// 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.
// Tests syscall P stealing at a generation boundary.
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) {
g := t.Generation(1)
// One goroutine is exiting with a syscall. It already
// acquired a new P.
b0 := g.Batch(trace.ThreadID(0), 0)
b0.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoSyscall)
b0.Event("ProcStatus", trace.ProcID(1), go122.ProcIdle)
b0.Event("ProcStart", trace.ProcID(1), testgen.Seq(1))
b0.Event("GoSyscallEndBlocked")
// A running goroutine stole P0 at the generation boundary.
b1 := g.Batch(trace.ThreadID(1), 0)
b1.Event("ProcStatus", trace.ProcID(2), go122.ProcRunning)
b1.Event("GoStatus", trace.GoID(2), trace.ThreadID(1), go122.GoRunning)
b1.Event("ProcStatus", trace.ProcID(0), go122.ProcSyscallAbandoned)
b1.Event("ProcSteal", trace.ProcID(0), testgen.Seq(1), trace.ThreadID(0))
}
|
