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57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020, 2024, 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 "precompiled.hpp"
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#include "code/codeBlob.hpp"
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#include "code/codeCache.hpp"
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#include "runtime/interfaceSupport.inline.hpp"
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JVM_ENTRY(static jboolean, UH_FreeUpcallStub0(JNIEnv *env, jobject _unused, jlong addr))
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// safe to call 'find_blob' without code cache lock, because stub is always alive
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CodeBlob* cb = CodeCache::find_blob((char*)addr);
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if (cb == nullptr) {
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return false;
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}
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UpcallStub::free(cb->as_upcall_stub());
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return true;
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JVM_END
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#define CC (char*) /*cast a literal from (const char*)*/
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#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
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#define LANG "Ljava/lang/"
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// These are the native methods on jdk.internal.foreign.NativeInvoker.
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static JNINativeMethod UH_methods[] = {
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{CC "freeUpcallStub0", CC "(J)Z", FN_PTR(UH_FreeUpcallStub0)}
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};
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/**
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* This one function is exported, used by NativeLookup.
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*/
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JVM_LEAF(void, JVM_RegisterUpcallHandlerMethods(JNIEnv *env, jclass UH_class))
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int status = env->RegisterNatives(UH_class, UH_methods, sizeof(UH_methods)/sizeof(JNINativeMethod));
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guarantee(status == JNI_OK && !env->ExceptionCheck(),
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"register jdk.internal.foreign.abi.UpcallStubs natives");
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JVM_END
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