50 lines
1.8 KiB
C++
50 lines
1.8 KiB
C++
/*
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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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*/
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#ifndef SHARE_JVMCI_JNIACCESSMARK_INLINE_HPP
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#define SHARE_JVMCI_JNIACCESSMARK_INLINE_HPP
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#include "jvmci/jvmciEnv.hpp"
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#include "runtime/interfaceSupport.inline.hpp"
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// Wrapper for a JNI call into the JVMCI shared library.
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// This performs a ThreadToNativeFromVM transition so that the VM
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// will not be blocked if the call takes a long time (e.g., due
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// to a GC in the shared library).
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class JNIAccessMark : public StackObj {
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private:
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ThreadToNativeFromVM ttnfv;
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HandleMark hm;
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JNIEnv* _env;
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public:
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inline JNIAccessMark(JVMCIEnv* jvmci_env) :
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ttnfv(JavaThread::current()), hm(JavaThread::current()) {
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_env = jvmci_env->_env;
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}
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JNIEnv* env() const { return _env; }
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JNIEnv* operator () () const { return _env; }
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};
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#endif // SHARE_JVMCI_JNIACCESSMARK_INLINE_HPP
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