hotspot/src/share/vm/prims/jniCheck.hpp
author ysr
Thu, 03 Dec 2009 15:01:57 -0800
changeset 4461 c17c526d36ef
parent 1623 a0dd9009e992
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 2003-2008 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.
 *
 */

extern "C" {
  // Report a JNI failure caught by -Xcheck:jni.  Perform a core dump.
  // Note: two variations -- one to be called when in VM state (e.g. when
  // within IN_VM macro), one to be called when in NATIVE state.

  // When in VM state:
  static void ReportJNIFatalError(JavaThread* thr, const char *msg) {
    tty->print_cr("FATAL ERROR in native method: %s", msg);
    thr->print_stack();
    os::abort(true);
  }
}

//
// Checked JNI routines that are useful for outside of checked JNI
//

class jniCheck : public AllStatic {
 public:
  static oop validate_handle(JavaThread* thr, jobject obj);
  static oop validate_object(JavaThread* thr, jobject obj);
  static klassOop validate_class(JavaThread* thr, jclass clazz, bool allow_primitive = false);
  static void validate_class_descriptor(JavaThread* thr, const char* name);
  static void validate_throwable_klass(JavaThread* thr, klassOop klass);
  static void validate_call_object(JavaThread* thr, jobject obj, jmethodID method_id);
  static void validate_call_class(JavaThread* thr, jclass clazz, jmethodID method_id);
  static methodOop validate_jmethod_id(JavaThread* thr, jmethodID method_id);
};