runtime: move test programs out of source code, coalesce

Now there are just three programs to compile instead of many,
and repeated tests can reuse the compilation result instead of
rebuilding it.

Combined, these changes reduce the time spent testing runtime
during all.bash on my laptop from about 60 to about 30 seconds.
(All.bash itself runs in 5½ minutes.)

For #10571.

Change-Id: Ie2c1798b847f1a635a860d11dcdab14375319ae9
Reviewed-on: https://go-review.googlesource.com/18085
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/src/runtime/testdata/testprogcgo/threadprof.go b/src/runtime/testdata/testprogcgo/threadprof.go
new file mode 100644
index 0000000000..03e35d2a9e
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/threadprof.go
@@ -0,0 +1,93 @@
+// Copyright 2015 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.
+
+// +build !plan9,!windows
+
+package main
+
+/*
+#include <stdint.h>
+#include <signal.h>
+#include <pthread.h>
+
+volatile int32_t spinlock;
+
+static void *thread1(void *p) {
+	(void)p;
+	while (spinlock == 0)
+		;
+	pthread_kill(pthread_self(), SIGPROF);
+	spinlock = 0;
+	return NULL;
+}
+__attribute__((constructor)) void issue9456() {
+	pthread_t tid;
+	pthread_create(&tid, 0, thread1, NULL);
+}
+
+void **nullptr;
+
+void *crash(void *p) {
+	*nullptr = p;
+	return 0;
+}
+
+int start_crashing_thread(void) {
+	pthread_t tid;
+	return pthread_create(&tid, 0, crash, 0);
+}
+*/
+import "C"
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"runtime"
+	"sync/atomic"
+	"time"
+	"unsafe"
+)
+
+func init() {
+	register("CgoExternalThreadSIGPROF", CgoExternalThreadSIGPROF)
+	register("CgoExternalThreadSignal", CgoExternalThreadSignal)
+}
+
+func CgoExternalThreadSIGPROF() {
+	// This test intends to test that sending SIGPROF to foreign threads
+	// before we make any cgo call will not abort the whole process, so
+	// we cannot make any cgo call here. See https://golang.org/issue/9456.
+	atomic.StoreInt32((*int32)(unsafe.Pointer(&C.spinlock)), 1)
+	for atomic.LoadInt32((*int32)(unsafe.Pointer(&C.spinlock))) == 1 {
+		runtime.Gosched()
+	}
+	println("OK")
+}
+
+func CgoExternalThreadSignal() {
+	if len(os.Args) > 2 && os.Args[2] == "crash" {
+		i := C.start_crashing_thread()
+		if i != 0 {
+			fmt.Println("pthread_create failed:", i)
+			// Exit with 0 because parent expects us to crash.
+			return
+		}
+
+		// We should crash immediately, but give it plenty of
+		// time before failing (by exiting 0) in case we are
+		// running on a slow system.
+		time.Sleep(5 * time.Second)
+		return
+	}
+
+	out, err := exec.Command(os.Args[0], "CgoExternalThreadSignal", "crash").CombinedOutput()
+	if err == nil {
+		fmt.Println("C signal did not crash as expected\n")
+		fmt.Printf("%s\n", out)
+		os.Exit(1)
+	}
+
+	fmt.Println("OK")
+}