LargePageGtests.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * This runs the parts of the gtest which make sense in large-page scenarios
 *  (mainly os*).
 * Note that if these tests run on a system whose kernel supports large pages
 *   but where no huge pages are configured, these tests are still useful. They
 *   will test correct initialization. Later reserve calls will fail and fall
 *   back to small pages (while complaining loudly) but this should not affect
 *   the gtests. When tests complain, they would spew a lot of warning messages,
 *   which could blow out the test runner Java heaps. This is why we are running
 *   with -XX:-PrintWarnings.
 */

/* @test id=use-large-pages
 * @summary Run metaspace-related gtests for reclaim policy none (with verifications)
 * @requires os.family == "linux" | os.family == "windows"
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.xml
 * @requires vm.flagless
 * @run main/native GTestWrapper --gtest_filter=os* -XX:-PrintWarnings -XX:+UseLargePages
 */

/* @test id=use-large-pages-1G
 * @summary Run metaspace-related gtests for reclaim policy none (with verifications)
 * @requires os.family == "linux"
 * @requires vm.bits == "64"
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.xml
 * @requires vm.flagless
 * @run main/native GTestWrapper --gtest_filter=os* -XX:-PrintWarnings -XX:+UseLargePages -XX:LargePageSizeInBytes=1G
 */

/* @test id=use-large-pages-sysV
 * @summary Run metaspace-related gtests for reclaim policy none (with verifications)
 * @requires os.family == "linux"
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.xml
 * @requires vm.flagless
 * @run main/native GTestWrapper --gtest_filter=os* -XX:-PrintWarnings -XX:+UseLargePages -XX:+UseSHM
 */