81 lines
2.7 KiB
Java
81 lines
2.7 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2020 SAP SE. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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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import java.util.concurrent.CyclicBarrier;
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import static java.lang.System.currentTimeMillis;
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public class MetaspaceTestOneArenaManyThreads extends MetaspaceTestWithThreads {
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// Several threads allocate from a single arena.
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// This mimicks several threads loading classes via the same class loader.
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public MetaspaceTestOneArenaManyThreads(MetaspaceTestContext context, long testAllocationCeiling, int numThreads, int seconds) {
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super(context, testAllocationCeiling, numThreads, seconds);
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}
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public void runTest() throws Exception {
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long t_start = currentTimeMillis();
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long t_stop = t_start + (seconds * 1000);
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// We create a single arena, and n threads which will allocate from that single arena.
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MetaspaceTestArena arena = context.createArena(RandomHelper.fiftyfifty(), testAllocationCeiling);
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CyclicBarrier gate = new CyclicBarrier(numThreads + 1);
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for (int i = 0; i < numThreads; i ++) {
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RandomAllocator allocator = new RandomAllocator(arena);
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RandomAllocatorThread thread = new RandomAllocatorThread(gate, allocator, i);
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threads[i] = thread;
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thread.start();
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}
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gate.await();
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while (System.currentTimeMillis() < t_stop) {
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Thread.sleep(200);
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}
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stopAllThreads();
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context.updateTotals();
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System.out.println(" ## Finished: " + context);
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context.checkStatistics();
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context.destroyArena(arena);
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context.purge();
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context.destroy();
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System.out.println("This took " + (System.currentTimeMillis() - t_start) + "ms");
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}
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}
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