--- /dev/null 2018-11-30 10:10:44.238550338 +0100 +++ new/test/hotspot/jtreg/gc/stress/CriticalNativeStress.java 2018-11-30 21:06:54.750056066 +0100 @@ -0,0 +1,210 @@ +/* + * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates. + * + * 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 java.util.Random; + +/* + * @test CriticalNativeStressEpsilon + * @key gc + * @bug 8199868 + * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Epsilon & !vm.graal.enabled + * @summary test argument pinning by nmethod wrapper of critical native method + * @run main/othervm/native -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xcomp -Xmx1G -XX:+CriticalJNINatives CriticalNativeStress + */ + +/* + * @test CriticalNativeStressShenandoah + * @key gc + * @bug 8199868 + * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Shenandoah & !vm.graal.enabled + * @summary test argument pinning by nmethod wrapper of critical native method + * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives CriticalNativeStress + * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives CriticalNativeStress + * + * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive -Xcomp -Xmx512M -XX:+CriticalJNINatives CriticalNativeStress + * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xcomp -Xmx256M -XX:+CriticalJNINatives CriticalNativeStress + * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=traversal -Xcomp -Xmx512M -XX:+CriticalJNINatives CriticalNativeStress + */ +public class CriticalNativeStress { + private static Random rand = new Random(); + static { + System.loadLibrary("CriticalNative"); + } + + // CYCLES and THREAD_PER_CASE are used to tune the tests for different GC settings, + // so that they can execrise enough GC cycles and not OOM + private static int CYCLES = Integer.getInteger("cycles", 3); + private static int THREAD_PER_CASE = Integer.getInteger("threadPerCase", 1); + + static native long sum1(long[] a); + + // More than 6 parameters + static native long sum2(long a1, int[] a2, int[] a3, long[] a4, int[] a5); + + static long sum(long[] a) { + long sum = 0; + for (int index = 0; index < a.length; index ++) { + sum += a[index]; + } + return sum; + } + + static long sum(int[] a) { + long sum = 0; + for (int index = 0; index < a.length; index ++) { + sum += a[index]; + } + return sum; + } + + private static volatile String garbage_array[]; + + // GC potentially moves arrays passed to critical native methods + // if they are not pinned correctly. + // Create enough garbages to exercise GC cycles, verify + // the arrays are pinned correctly. + static void create_garbage(int len) { + len = Math.max(len, 1024); + String array[] = new String[len]; + for (int index = 0; index < len; index ++) { + array[index] = "String " + index; + } + garbage_array = array; + } + + // Two test cases with different method signatures: + // Tests generate arbitrary length of arrays with + // arbitrary values, then calcuate sum of the array + // elements with critical native JNI methods and java + // methods, and compare the results for correctness. + static void run_test_case1() { + // Create testing arary with arbitrary length and + // values + int length = rand.nextInt(50) + 1; + long[] arr = new long[length]; + for (int index = 0; index < length; index ++) { + arr[index] = rand.nextLong() % 1002; + } + + // Generate garbages to trigger GCs + for (int index = 0; index < length; index ++) { + create_garbage(index); + } + + // Compare results for correctness. + long native_sum = sum1(arr); + long java_sum = sum(arr); + if (native_sum != java_sum) { + StringBuffer sb = new StringBuffer("Sums do not match: native = ") + .append(native_sum).append(" java = ").append(java_sum); + + throw new RuntimeException(sb.toString()); + } + } + + static void run_test_case2() { + // Create testing arary with arbitrary length and + // values + int index; + long a1 = rand.nextLong() % 1025; + + int a2_length = rand.nextInt(50) + 1; + int[] a2 = new int[a2_length]; + for (index = 0; index < a2_length; index ++) { + a2[index] = rand.nextInt(106); + } + + int a3_length = rand.nextInt(150) + 1; + int[] a3 = new int[a3_length]; + for (index = 0; index < a3_length; index ++) { + a3[index] = rand.nextInt(3333); + } + + int a4_length = rand.nextInt(200) + 1; + long[] a4 = new long[a4_length]; + for (index = 0; index < a4_length; index ++) { + a4[index] = rand.nextLong() % 122; + } + + int a5_length = rand.nextInt(350) + 1; + int[] a5 = new int[a5_length]; + for (index = 0; index < a5_length; index ++) { + a5[index] = rand.nextInt(333); + } + + // Generate garbages to trigger GCs + for (index = 0; index < a1; index ++) { + create_garbage(index); + } + + // Compare results for correctness. + long native_sum = sum2(a1, a2, a3, a4, a5); + long java_sum = a1 + sum(a2) + sum(a3) + sum(a4) + sum(a5); + if (native_sum != java_sum) { + StringBuffer sb = new StringBuffer("Sums do not match: native = ") + .append(native_sum).append(" java = ").append(java_sum); + + throw new RuntimeException(sb.toString()); + } + } + + static class Case1Runner extends Thread { + public Case1Runner() { + start(); + } + + public void run() { + for (int index = 0; index < CYCLES; index ++) { + run_test_case1(); + } + } + } + + static class Case2Runner extends Thread { + public Case2Runner() { + start(); + } + + public void run() { + for (int index = 0; index < CYCLES; index ++) { + run_test_case2(); + } + } + } + + public static void main(String[] args) { + Thread[] thrs = new Thread[THREAD_PER_CASE * 2]; + for (int index = 0; index < thrs.length; index = index + 2) { + thrs[index] = new Case1Runner(); + thrs[index + 1] = new Case2Runner(); + } + + for (int index = 0; index < thrs.length; index ++) { + try { + thrs[index].join(); + } catch (Exception e) { + e.printStackTrace(); + } + } + } +}