/*
* Copyright ( c ) 2020 , 2022 , 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 .
*/
package jdk.jfr.jvm;
import jdk.jfr.FlightRecorder;
import jdk.jfr.internal.JVM;
import jdk.test.lib.Asserts;
/**
* @ test TestGetStackTraceId
* @ key jfr
* @ requires vm . hasJFR
* @ library / test / lib
* @ modules jdk . jfr / jdk . jfr . internal
* @ run main / othervm jdk . jfr . jvm . TestGetStackTraceId
*/
public class TestGetStackTraceId {
public static void main(String... args) {
FlightRecorder.getFlightRecorder();
JVM jvm = JVM.getJVM();
long id10 = getStackIdOfDepth(10 );
assertValid(id10);
long id5 = getStackIdOfDepth(5 );
assertValid(id5);
Asserts.assertNotEquals(id5, id10, "Different stack depth must return different stack trace ids" );
assertMaxSkip(jvm);
}
private static void assertMaxSkip(JVM jvm) {
Asserts.assertEquals(jvm.getStackTraceId(Integer.MAX_VALUE), 0 L, "Insane skip level "
+ Integer.MAX_VALUE + " should not return a valid stack trace id" );
}
private static void assertValid(long value) {
Asserts.assertGreaterThan(value, 0 L, "Stack trace id must be greater than 0, was " + value);
}
public static long getStackIdOfDepth(int depth) {
if (depth > 0 ) {
return getStackIdOfDepth(depth - 1 );
}
return JVM.getJVM().getStackTraceId(0 );
}
}
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