hotspot/src/share/vm/prims/jvm_misc.hpp
author ysr
Thu, 03 Dec 2009 15:01:57 -0800
changeset 4461 c17c526d36ef
parent 3261 c7d5aae8d3f7
child 5547 f4b087cbb361
permissions -rw-r--r--
6906727: UseCompressedOops: some card-marking fixes related to object arrays Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17). Reviewed-by: kvn, coleenp, jmasa

/*
 * Copyright 1998-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

// Useful entry points shared by JNI and JVM interface.
// We do not allow real JNI or JVM entry point to call each other.

jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS);

void trace_class_resolution(klassOop to_class);

/*
 * Support for Serialization and RMI. Currently used by HotSpot only.
 */

extern "C" {

void JNICALL
JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
                            jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);

void JNICALL
JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,
                            jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);

}

/*
 * Support for -Xcheck:jni
 */

extern struct JNINativeInterface_* jni_functions_nocheck();
extern struct JNINativeInterface_* jni_functions_check();

/*
 * Support for swappable jni function table.
 */
extern struct JNINativeInterface_* jni_functions();
extern void copy_jni_function_table(const struct JNINativeInterface_* new_function_table);

// Support for fast JNI accessors
extern "C" {
  typedef jboolean (JNICALL *GetBooleanField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jbyte (JNICALL *GetByteField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jchar (JNICALL *GetCharField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jshort (JNICALL *GetShortField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jint (JNICALL *GetIntField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jlong (JNICALL *GetLongField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jfloat (JNICALL *GetFloatField_t)
      (JNIEnv *env, jobject obj, jfieldID fieldID);
  typedef jdouble (JNICALL *GetDoubleField_t)
    (JNIEnv *env, jobject obj, jfieldID fieldID);
}

void    quicken_jni_functions();
address jni_GetBooleanField_addr();
address jni_GetByteField_addr();
address jni_GetCharField_addr();
address jni_GetShortField_addr();
address jni_GetIntField_addr();
address jni_GetLongField_addr();
address jni_GetFloatField_addr();
address jni_GetDoubleField_addr();