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/*
* Copyright (c) 2019, SAP SE. 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.
*/
import jdk.test.lib.*;
import jdk.test.lib.process.*;
/*
* @test TestAbortVMOnSafepointTimeout
* @summary Check if VM can kill thread which doesn't reach safepoint.
* @bug 8219584 8227528
* @requires vm.compiler2.enabled
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
*/
public class TestAbortVMOnSafepointTimeout {
public static void main(String[] args) throws Exception {
if (args.length > 0) {
int result = test_loop(3);
System.out.println("This message would occur after some time with result " + result);
return;
}
testWith(500, 500);
}
static int test_loop(int x) {
int sum = 0;
if (x != 0) {
// Long running loop without safepoint.
for (int y = 1; y < Integer.MAX_VALUE; ++y) {
if (y % x == 0) ++sum;
}
}
return sum;
}
public static void testWith(int sfpt_interval, int timeout_delay) throws Exception {
// -XX:-UseCountedLoopSafepoints - is used to prevent the loop
// in test_loop() to poll for safepoints.
// -XX:LoopStripMiningIter=0 and -XX:LoopUnrollLimit=0 - are
// used to prevent optimizations over the loop in test_loop()
// since we actually want it to provoke a safepoint timeout.
// -XX:-UseBiasedLocking - is used to prevent biased locking
// handshakes from changing the timing of this test.
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:-UseBiasedLocking",
"-XX:+SafepointTimeout",
"-XX:+SafepointALot",
"-XX:+AbortVMOnSafepointTimeout",
"-XX:SafepointTimeoutDelay=" + timeout_delay,
"-XX:GuaranteedSafepointInterval=" + sfpt_interval,
"-XX:-TieredCompilation",
"-XX:-UseCountedLoopSafepoints",
"-XX:LoopStripMiningIter=0",
"-XX:LoopUnrollLimit=0",
"-XX:CompileCommand=compileonly,TestAbortVMOnSafepointTimeout::test_loop",
"-Xcomp",
"-XX:-CreateCoredumpOnCrash",
"-Xms64m",
"TestAbortVMOnSafepointTimeout",
"runTestLoop"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
if (Platform.isWindows()) {
output.shouldMatch("Safepoint sync time longer than");
} else {
output.shouldMatch("SIGILL");
if (Platform.isLinux()) {
output.shouldMatch("(sent by kill)");
}
output.shouldMatch("TestAbortVMOnSafepointTimeout.test_loop");
}
output.shouldNotHaveExitValue(0);
}
}
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