author | zgu |
Tue, 15 Oct 2019 22:22:23 -0400 | |
changeset 58641 | 55fe0d93bdd3 |
parent 55594 | 66a748c4f3ff |
child 58679 | 9c3209ff7550 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 2019, Red Hat, Inc. and/or its affiliates. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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package gc.stress; |
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import java.util.Random; |
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import gc.CriticalNative; |
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/* |
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* @test CriticalNativeStressEpsilon |
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* @key gc |
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* @bug 8199868 |
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* @library / |
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* @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Epsilon & !vm.graal.enabled |
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* @summary test argument pinning by nmethod wrapper of critical native method |
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* @run main/othervm/native -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xcomp -Xmx1G -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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*/ |
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/* |
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* @test CriticalNativeStressShenandoah |
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* @key gc |
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* @bug 8199868 |
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* @library / |
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* @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Shenandoah & !vm.graal.enabled |
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* @summary test argument pinning by nmethod wrapper of critical native method |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive -XX:-ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive -XX:+ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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* |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xcomp -Xmx256M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress |
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*/ |
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public class CriticalNativeStress { |
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private static Random rand = new Random(); |
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// CYCLES and THREAD_PER_CASE are used to tune the tests for different GC settings, |
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// so that they can execrise enough GC cycles and not OOM |
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private static int CYCLES = Integer.getInteger("cycles", 3); |
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private static int THREAD_PER_CASE = Integer.getInteger("threadPerCase", 1); |
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static long sum(long[] a) { |
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long sum = 0; |
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for (int index = 0; index < a.length; index ++) { |
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sum += a[index]; |
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} |
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return sum; |
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} |
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static long sum(int[] a) { |
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long sum = 0; |
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for (int index = 0; index < a.length; index ++) { |
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sum += a[index]; |
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} |
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return sum; |
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} |
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private static volatile String garbage_array[]; |
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// GC potentially moves arrays passed to critical native methods |
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// if they are not pinned correctly. |
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// Create enough garbages to exercise GC cycles, verify |
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// the arrays are pinned correctly. |
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static void create_garbage(int len) { |
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len = Math.max(len, 1024); |
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String array[] = new String[len]; |
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for (int index = 0; index < len; index ++) { |
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array[index] = "String " + index; |
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} |
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garbage_array = array; |
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} |
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// Two test cases with different method signatures: |
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// Tests generate arbitrary length of arrays with |
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// arbitrary values, then calcuate sum of the array |
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// elements with critical native JNI methods and java |
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// methods, and compare the results for correctness. |
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static void run_test_case1() { |
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// Create testing arary with arbitrary length and |
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// values |
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101 |
int length = rand.nextInt(50) + 1; |
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102 |
long[] arr = new long[length]; |
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|
103 |
for (int index = 0; index < length; index ++) { |
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|
104 |
arr[index] = rand.nextLong() % 1002; |
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|
105 |
} |
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|
106 |
|
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|
107 |
// Generate garbages to trigger GCs |
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|
108 |
for (int index = 0; index < length; index ++) { |
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|
109 |
create_garbage(index); |
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110 |
} |
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|
111 |
|
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112 |
// Compare results for correctness. |
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113 |
long native_sum = CriticalNative.sum1(arr); |
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114 |
long java_sum = sum(arr); |
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|
115 |
if (native_sum != java_sum) { |
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116 |
StringBuffer sb = new StringBuffer("Sums do not match: native = ") |
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117 |
.append(native_sum).append(" java = ").append(java_sum); |
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|
118 |
|
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119 |
throw new RuntimeException(sb.toString()); |
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120 |
} |
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121 |
} |
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|
122 |
|
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123 |
static void run_test_case2() { |
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124 |
// Create testing arary with arbitrary length and |
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125 |
// values |
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126 |
int index; |
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127 |
long a1 = rand.nextLong() % 1025; |
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|
128 |
|
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129 |
int a2_length = rand.nextInt(50) + 1; |
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130 |
int[] a2 = new int[a2_length]; |
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131 |
for (index = 0; index < a2_length; index ++) { |
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132 |
a2[index] = rand.nextInt(106); |
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133 |
} |
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|
134 |
|
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135 |
int a3_length = rand.nextInt(150) + 1; |
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|
136 |
int[] a3 = new int[a3_length]; |
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|
137 |
for (index = 0; index < a3_length; index ++) { |
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|
138 |
a3[index] = rand.nextInt(3333); |
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139 |
} |
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|
140 |
|
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141 |
int a4_length = rand.nextInt(200) + 1; |
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|
142 |
long[] a4 = new long[a4_length]; |
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|
143 |
for (index = 0; index < a4_length; index ++) { |
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|
144 |
a4[index] = rand.nextLong() % 122; |
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|
145 |
} |
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|
146 |
|
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|
147 |
int a5_length = rand.nextInt(350) + 1; |
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|
148 |
int[] a5 = new int[a5_length]; |
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|
149 |
for (index = 0; index < a5_length; index ++) { |
9c18c9d839d3
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|
150 |
a5[index] = rand.nextInt(333); |
9c18c9d839d3
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|
151 |
} |
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|
152 |
|
9c18c9d839d3
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|
153 |
// Generate garbages to trigger GCs |
9c18c9d839d3
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|
154 |
for (index = 0; index < a1; index ++) { |
9c18c9d839d3
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|
155 |
create_garbage(index); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
156 |
} |
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|
157 |
|
9c18c9d839d3
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|
158 |
// Compare results for correctness. |
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|
159 |
long native_sum = CriticalNative.sum2(a1, a2, a3, a4, a5); |
52925
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|
160 |
long java_sum = a1 + sum(a2) + sum(a3) + sum(a4) + sum(a5); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
161 |
if (native_sum != java_sum) { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
162 |
StringBuffer sb = new StringBuffer("Sums do not match: native = ") |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
163 |
.append(native_sum).append(" java = ").append(java_sum); |
9c18c9d839d3
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changeset
|
164 |
|
9c18c9d839d3
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|
165 |
throw new RuntimeException(sb.toString()); |
9c18c9d839d3
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changeset
|
166 |
} |
9c18c9d839d3
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|
167 |
} |
9c18c9d839d3
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changeset
|
168 |
|
9c18c9d839d3
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|
169 |
static class Case1Runner extends Thread { |
9c18c9d839d3
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|
170 |
public Case1Runner() { |
9c18c9d839d3
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|
171 |
start(); |
9c18c9d839d3
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|
172 |
} |
9c18c9d839d3
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changeset
|
173 |
|
9c18c9d839d3
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|
174 |
public void run() { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
175 |
for (int index = 0; index < CYCLES; index ++) { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
176 |
run_test_case1(); |
9c18c9d839d3
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|
177 |
} |
9c18c9d839d3
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|
178 |
} |
9c18c9d839d3
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changeset
|
179 |
} |
9c18c9d839d3
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changeset
|
180 |
|
9c18c9d839d3
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|
181 |
static class Case2Runner extends Thread { |
9c18c9d839d3
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|
182 |
public Case2Runner() { |
9c18c9d839d3
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|
183 |
start(); |
9c18c9d839d3
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changeset
|
184 |
} |
9c18c9d839d3
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changeset
|
185 |
|
9c18c9d839d3
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|
186 |
public void run() { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
187 |
for (int index = 0; index < CYCLES; index ++) { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
188 |
run_test_case2(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
189 |
} |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
190 |
} |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
191 |
} |
9c18c9d839d3
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changeset
|
192 |
|
9c18c9d839d3
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|
193 |
public static void main(String[] args) { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
194 |
Thread[] thrs = new Thread[THREAD_PER_CASE * 2]; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
195 |
for (int index = 0; index < thrs.length; index = index + 2) { |
9c18c9d839d3
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|
196 |
thrs[index] = new Case1Runner(); |
9c18c9d839d3
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|
197 |
thrs[index + 1] = new Case2Runner(); |
9c18c9d839d3
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|
198 |
} |
9c18c9d839d3
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changeset
|
199 |
|
9c18c9d839d3
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|
200 |
for (int index = 0; index < thrs.length; index ++) { |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
201 |
try { |
9c18c9d839d3
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|
202 |
thrs[index].join(); |
9c18c9d839d3
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|
203 |
} catch (Exception e) { |
9c18c9d839d3
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|
204 |
e.printStackTrace(); |
9c18c9d839d3
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|
205 |
} |
9c18c9d839d3
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|
206 |
} |
9c18c9d839d3
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|
207 |
} |
9c18c9d839d3
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|
208 |
} |