hotspot/src/share/vm/prims/jvm_misc.hpp
author coleenp
Sat, 01 Sep 2012 13:25:18 -0400
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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
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/*
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 * Copyright (c) 1998, 2012, 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_VM_PRIMS_JVM_MISC_HPP
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#define SHARE_VM_PRIMS_JVM_MISC_HPP
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#include "prims/jni.h"
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#include "runtime/handles.hpp"
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// Useful entry points shared by JNI and JVM interface.
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// We do not allow real JNI or JVM entry point to call each other.
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jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS);
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void trace_class_resolution(Klass* to_class);
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/*
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 * Support for Serialization and RMI. Currently used by HotSpot only.
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 */
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extern "C" {
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void JNICALL
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JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
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                            jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);
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void JNICALL
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JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
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                            jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);
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}
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/*
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 * Support for -Xcheck:jni
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 */
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extern struct JNINativeInterface_* jni_functions_nocheck();
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extern struct JNINativeInterface_* jni_functions_check();
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/*
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 * Support for swappable jni function table.
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 */
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extern struct JNINativeInterface_* jni_functions();
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extern void copy_jni_function_table(const struct JNINativeInterface_* new_function_table);
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// Support for fast JNI accessors
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extern "C" {
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  typedef jboolean (JNICALL *GetBooleanField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jbyte (JNICALL *GetByteField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jchar (JNICALL *GetCharField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jshort (JNICALL *GetShortField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jint (JNICALL *GetIntField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jlong (JNICALL *GetLongField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jfloat (JNICALL *GetFloatField_t)
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      (JNIEnv *env, jobject obj, jfieldID fieldID);
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  typedef jdouble (JNICALL *GetDoubleField_t)
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    (JNIEnv *env, jobject obj, jfieldID fieldID);
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}
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void    quicken_jni_functions();
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address jni_GetBooleanField_addr();
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address jni_GetByteField_addr();
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address jni_GetCharField_addr();
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address jni_GetShortField_addr();
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address jni_GetIntField_addr();
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address jni_GetLongField_addr();
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address jni_GetFloatField_addr();
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address jni_GetDoubleField_addr();
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#endif // SHARE_VM_PRIMS_JVM_MISC_HPP