| /* | |
| * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| #include "code/codeBlob.hpp" | |
| #include "code/codeCache.hpp" | |
| #include "runtime/interfaceSupport.inline.hpp" | |
| JVM_ENTRY(static jboolean, UH_FreeUpcallStub0(JNIEnv *env, jobject _unused, jlong addr)) | |
| // safe to call 'find_blob' without code cache lock, because stub is always alive | |
| CodeBlob* cb = CodeCache::find_blob((char*)addr); | |
| if (cb == nullptr) { | |
| return false; | |
| } | |
| UpcallStub::free(cb->as_upcall_stub()); | |
| return true; | |
| JVM_END | |
| #define CC (char*) /*cast a literal from (const char*)*/ | |
| #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f) | |
| #define LANG "Ljava/lang/" | |
| // These are the native methods on jdk.internal.foreign.NativeInvoker. | |
| static JNINativeMethod UH_methods[] = { | |
| {CC "freeUpcallStub0", CC "(J)Z", FN_PTR(UH_FreeUpcallStub0)} | |
| }; | |
| /** | |
| * This one function is exported, used by NativeLookup. | |
| */ | |
| JVM_LEAF(void, JVM_RegisterUpcallHandlerMethods(JNIEnv *env, jclass UH_class)) | |
| int status = env->RegisterNatives(UH_class, UH_methods, sizeof(UH_methods)/sizeof(JNINativeMethod)); | |
| guarantee(status == JNI_OK && !env->ExceptionCheck(), | |
| "register jdk.internal.foreign.abi.UpcallStubs natives"); | |
| JVM_END | |