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/*
* Copyright (c) 2021, 2023, 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.
*/
/*
* @test
* @bug 8272586
* @requires vm.flagless
* @requires vm.compiler2.enabled
* @summary Test that abstract machine code is dumped for the top frames in a hs-err log
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.compiler
* java.management
* jdk.internal.jvmstat/sun.jvmstat.monitor
* @run driver MachCodeFramesInErrorFile
*/
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Asserts;
import jdk.internal.misc.Unsafe;
public class MachCodeFramesInErrorFile {
private static class Crasher {
// Make Crasher.unsafe a compile-time constant so that
// C2 intrinsifies calls to Unsafe intrinsics.
private static final Unsafe unsafe = Unsafe.getUnsafe();
public static void main(String[] args) throws Exception {
if (args[0].equals("crashInJava")) {
// This test relies on Unsafe.putLong(Object, long, long) being intrinsified
if (!Stream.of(Unsafe.class.getDeclaredMethod("putLong", Object.class, long.class, long.class).getAnnotations()).
anyMatch(a -> a.annotationType().getName().equals("jdk.internal.vm.annotation.IntrinsicCandidate"))) {
throw new RuntimeException("Unsafe.putLong(Object, long, long) is not an intrinsic");
}
crashInJava1(10);
} else {
assert args[0].equals("crashInVM");
crashInNative1(10);
}
}
static void crashInJava1(long address) {
System.out.println("in crashInJava1");
crashInJava2(address);
}
static void crashInJava2(long address) {
System.out.println("in crashInJava2");
crashInJava3(address);
}
static void crashInJava3(long address) {
unsafe.putLong(null, address, 42);
System.out.println("wrote value to 0x" + Long.toHexString(address));
}
static void crashInNative1(long address) {
System.out.println("in crashInNative1");
crashInNative2(address);
}
static void crashInNative2(long address) {
System.out.println("in crashInNative2");
crashInNative3(address);
}
static void crashInNative3(long address) {
System.out.println("read value " + unsafe.getLong(address) + " from 0x" + Long.toHexString(address));
}
}
public static void main(String[] args) throws Exception {
run(true);
run(false);
}
/**
* Runs Crasher in Xcomp mode. The inner
* most method crashes the VM with Unsafe. The resulting hs-err log is
* expected to have a min number of MachCode sections.
*/
private static void run(boolean crashInJava) throws Exception {
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
"-Xmx64m", "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",
"-XX:-CreateCoredumpOnCrash",
"-Xcomp",
"-XX:-TieredCompilation",
"-XX:CompileCommand=compileonly,MachCodeFramesInErrorFile$Crasher.crashIn*",
"-XX:CompileCommand=dontinline,MachCodeFramesInErrorFile$Crasher.crashIn*",
"-XX:CompileCommand=dontinline,*/Unsafe.getLong", // ensures VM call when crashInJava == false
Crasher.class.getName(),
crashInJava ? "crashInJava" : "crashInVM");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
// Extract hs_err_pid file.
String hs_err_file = output.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
if (hs_err_file == null) {
throw new RuntimeException("Did not find hs_err_pid file in output.\n" +
"stderr:\n" + output.getStderr() + "\n" +
"stdout:\n" + output.getStdout());
}
Path hsErrPath = Paths.get(hs_err_file);
if (!Files.exists(hsErrPath)) {
throw new RuntimeException("hs_err_pid file missing at " + hsErrPath + ".\n");
}
String hsErr = Files.readString(hsErrPath);
if (System.getenv("DEBUG") != null) {
System.err.println(hsErr);
}
Set<String> frames = new HashSet<>();
extractFrames(hsErr, frames, true);
if (!crashInJava) {
// A crash in native will have Java frames in the hs-err log
// as there is a Java frame anchor on the stack.
extractFrames(hsErr, frames, false);
}
int compiledJavaFrames = (int) frames.stream().filter(f -> f.startsWith("J ")).count();
Matcher matcherDisasm = Pattern.compile("\\[Disassembly\\].*\\[/Disassembly\\]", Pattern.DOTALL).matcher(hsErr);
if (matcherDisasm.find()) {
// Real disassembly is present, no MachCode is expected.
return;
}
Matcher matcher = Pattern.compile("\\[MachCode\\]\\s*\\[Verified Entry Point\\]\\s* # \\{method\\} \\{[^}]*\\} '([^']+)' '([^']+)' in '([^']+)'", Pattern.DOTALL).matcher(hsErr);
List<String> machCodeHeaders = matcher.results().map(mr -> String.format("'%s' '%s' in '%s'", mr.group(1), mr.group(2), mr.group(3))).collect(Collectors.toList());
int minExpectedMachCodeSections = Math.max(1, compiledJavaFrames);
if (machCodeHeaders.size() < minExpectedMachCodeSections) {
Asserts.fail(machCodeHeaders.size() + " < " + minExpectedMachCodeSections);
}
}
/**
* Extracts the lines in {@code hsErr} below the line starting with
* "Native frames:" or "Java frames:" up to the next blank line
* and adds them to {@code frames}.
*/
private static void extractFrames(String hsErr, Set<String> frames, boolean nativeStack) {
String marker = (nativeStack ? "Native" : "Java") + " frames: ";
boolean seenMarker = false;
for (String line : hsErr.split(System.lineSeparator())) {
if (line.startsWith(marker)) {
seenMarker = true;
} else if (seenMarker) {
if (line.trim().isEmpty()) {
return;
}
frames.add(line);
}
}
throw new RuntimeException("\"" + marker + "\" line missing in hs_err_pid file:\n" + hsErr);
}
}
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