From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- src/runtime/runtime_unix_test.go | 56 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 src/runtime/runtime_unix_test.go (limited to 'src/runtime/runtime_unix_test.go') diff --git a/src/runtime/runtime_unix_test.go b/src/runtime/runtime_unix_test.go new file mode 100644 index 0000000..b0cbbbe --- /dev/null +++ b/src/runtime/runtime_unix_test.go @@ -0,0 +1,56 @@ +// Copyright 2013 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. + +// Only works on systems with syscall.Close. +// We need a fast system call to provoke the race, +// and Close(-1) is nearly universally fast. + +// +build aix darwin dragonfly freebsd linux netbsd openbsd plan9 + +package runtime_test + +import ( + "runtime" + "sync" + "sync/atomic" + "syscall" + "testing" +) + +func TestGoroutineProfile(t *testing.T) { + // GoroutineProfile used to use the wrong starting sp for + // goroutines coming out of system calls, causing possible + // crashes. + defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(100)) + + var stop uint32 + defer atomic.StoreUint32(&stop, 1) // in case of panic + + var wg sync.WaitGroup + for i := 0; i < 4; i++ { + wg.Add(1) + go func() { + for atomic.LoadUint32(&stop) == 0 { + syscall.Close(-1) + } + wg.Done() + }() + } + + max := 10000 + if testing.Short() { + max = 100 + } + stk := make([]runtime.StackRecord, 128) + for n := 0; n < max; n++ { + _, ok := runtime.GoroutineProfile(stk) + if !ok { + t.Fatalf("GoroutineProfile failed") + } + } + + // If the program didn't crash, we passed. + atomic.StoreUint32(&stop, 1) + wg.Wait() +} -- cgit v1.2.3