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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /misc/cgo/testsanitizers/testdata/tsan11.go | |
parent | Initial commit. (diff) | |
download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'misc/cgo/testsanitizers/testdata/tsan11.go')
-rw-r--r-- | misc/cgo/testsanitizers/testdata/tsan11.go | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/misc/cgo/testsanitizers/testdata/tsan11.go b/misc/cgo/testsanitizers/testdata/tsan11.go new file mode 100644 index 0000000..189e10f --- /dev/null +++ b/misc/cgo/testsanitizers/testdata/tsan11.go @@ -0,0 +1,55 @@ +// Copyright 2017 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. + +package main + +// This program hung when run under the C/C++ ThreadSanitizer. TSAN defers +// asynchronous signals until the signaled thread calls into libc. The runtime's +// sysmon goroutine idles itself using direct usleep syscalls, so it could +// run for an arbitrarily long time without triggering the libc interceptors. +// See https://golang.org/issue/18717. + +import ( + "os" + "os/signal" + "syscall" +) + +/* +#cgo CFLAGS: -g -fsanitize=thread +#cgo LDFLAGS: -g -fsanitize=thread + +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +static void raise_usr2(int signo) { + raise(SIGUSR2); +} + +static void register_handler(int signo) { + struct sigaction sa; + memset(&sa, 0, sizeof(sa)); + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_ONSTACK; + sa.sa_handler = raise_usr2; + + if (sigaction(SIGUSR1, &sa, NULL) != 0) { + perror("failed to register SIGUSR1 handler"); + exit(EXIT_FAILURE); + } +} +*/ +import "C" + +func main() { + ch := make(chan os.Signal, 1) + signal.Notify(ch, syscall.SIGUSR2) + + C.register_handler(C.int(syscall.SIGUSR1)) + syscall.Kill(syscall.Getpid(), syscall.SIGUSR1) + + <-ch +} |