diff options
Diffstat (limited to 'src/runtime/testdata/testprogcgo/bindm.go')
| -rw-r--r-- | src/runtime/testdata/testprogcgo/bindm.go | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/src/runtime/testdata/testprogcgo/bindm.go b/src/runtime/testdata/testprogcgo/bindm.go deleted file mode 100644 index c2003c2093..0000000000 --- a/src/runtime/testdata/testprogcgo/bindm.go +++ /dev/null @@ -1,61 +0,0 @@ -// 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. - -//go:build !plan9 && !windows - -// Test that callbacks from C to Go in the same C-thread always get the same m. -// Make sure the extra M bind to the C-thread. - -package main - -/* -extern void CheckBindM(); -*/ -import "C" - -import ( - "fmt" - "os" - "runtime" - "sync" - "sync/atomic" -) - -var ( - mutex = sync.Mutex{} - cThreadToM = map[uintptr]uintptr{} - started = atomic.Uint32{} -) - -// same as CTHREADS in C, make sure all the C threads are actually started. -const cThreadNum = 2 - -func init() { - register("EnsureBindM", EnsureBindM) -} - -//export GoCheckBindM -func GoCheckBindM(thread uintptr) { - // Wait all threads start - if started.Load() != cThreadNum { - // Only once for each thread, since it will wait all threads start. - started.Add(1) - for started.Load() < cThreadNum { - runtime.Gosched() - } - } - m := runtime_getm_for_test() - mutex.Lock() - defer mutex.Unlock() - if savedM, ok := cThreadToM[thread]; ok && savedM != m { - fmt.Printf("m == %x want %x\n", m, savedM) - os.Exit(1) - } - cThreadToM[thread] = m -} - -func EnsureBindM() { - C.CheckBindM() - fmt.Println("OK") -} |
