/* * Copyright (c) 2020, 2022, 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.
*/
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) { returnfalse;
}
UpcallStub::free(cb->as_upcall_stub()); returntrue;
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->ExceptionOccurred(), "register jdk.internal.foreign.abi.UpcallStubs natives");
JVM_END
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