test/hotspot/jtreg/runtime/clinit/libClassInitBarrier.cpp
author vlivanov
Thu, 30 May 2019 13:39:13 +0300
changeset 55105 9ad765641e8f
child 55749 cff8aad2593f
permissions -rw-r--r--
8223213: Implement fast class initialization checks on x86-64 Reviewed-by: kvn, redestad, dholmes, mdoerr, coleenp
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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. 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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#include <jni.h>
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static jmethodID methodId;
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extern "C" {
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    JNIEXPORT jboolean JNICALL Java_ClassInitBarrier_init(JNIEnv* env, jclass cls) {
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        jclass runnable = env->FindClass("java/lang/Runnable");
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        if (runnable == NULL)  return JNI_FALSE;
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        methodId = env->GetMethodID(runnable, "run", "()V");
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        if (methodId == NULL)  return JNI_FALSE;
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        return JNI_TRUE;
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    }
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    JNIEXPORT void JNICALL Java_ClassInitBarrier_00024Test_00024A_staticN(JNIEnv* env, jclass cls, jobject action) {
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        env->CallVoidMethod(action, methodId);
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    }
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}