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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /misc/cgo/testsanitizers/testdata/tsan11.go
parentInitial commit. (diff)
downloadgolang-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.go55
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
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--- /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
+}