test/hotspot/jtreg/serviceability/sa/libNoFramePointer.c
changeset 51518 2e98c7737d8f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/serviceability/sa/libNoFramePointer.c	Mon Jul 23 18:08:46 2018 +0200
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <jni.h>
+
+static jlong fib(jint num) {
+    if (num == 0) {
+        return 0;
+    }
+    if (num <= 2) {
+        return 1;
+    }
+    return fib(num - 2) + fib(num -1);
+}
+
+static void callCallback(JNIEnv *env, jclass cls, jobject target, jlong result) {
+    jmethodID mid = (*env)->GetMethodID(env, cls, "callback", "(J)V");
+    if (mid == NULL) {
+        jclass nsme = (jclass) (*env)->NewGlobalRef(env, (*env)->FindClass(env, "java/lang/NoSuchMethodException"));
+        if (nsme != NULL) {
+            (*env)->ThrowNew(env, nsme, "Can't find method callback()");
+        }
+        return;
+    }
+    (*env)->CallVoidMethod(env, target, mid, result);
+}
+
+static void calculateAndCallCallback(JNIEnv *env, jclass cls, jobject target, jint num) {
+    jlong result = -1;
+    result = fib(num);
+    callCallback(env, cls, target, result);
+}
+
+JNIEXPORT void JNICALL
+Java_LingeredAppWithNativeMethod_callJNI(JNIEnv *env, jclass cls, jobject target, jint num) {
+    calculateAndCallCallback(env, cls, target, num);
+}