view src/share/vm/shark/sharkRuntime.hpp @ 1994:6cd6d394f280

7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot || !gch->incremental_collection_failed()) 7002546: regression on SpecJbb2005 on 7b118 comparing to 7b117 on small heaps Summary: Relaxed assertion checking related to incremental_collection_failed flag to allow for ExplicitGCInvokesConcurrent behaviour where we do not want a failing scavenge to bail to a stop-world collection. Parameterized incremental_collection_will_fail() so we can selectively use, or not use, as appropriate, the statistical prediction at specific use sites. This essentially reverts the scavenge bail-out logic to what it was prior to some recent changes that had inadvertently started using the statistical prediction which can be noisy in the presence of bursty loads. Added some associated verbose non-product debugging messages. Reviewed-by: johnc, tonyp
author ysr
date Tue, 07 Dec 2010 21:55:53 -0800
parents f95d63e2154a
children da91efe96a93
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/*
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2008, 2009, 2010 Red Hat, Inc.
 * 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.
 *
 */

#ifndef SHARE_VM_SHARK_SHARKRUNTIME_HPP
#define SHARE_VM_SHARK_SHARKRUNTIME_HPP

#include "memory/allocation.hpp"
#include "oops/klassOop.hpp"
#include "runtime/thread.hpp"
#include "shark/llvmHeaders.hpp"
#include "shark/llvmValue.hpp"

class SharkRuntime : public AllStatic {
  // VM calls
 public:
  static int find_exception_handler(JavaThread* thread,
                                    int*        indexes,
                                    int         num_indexes);

  static void monitorenter(JavaThread* thread, BasicObjectLock* lock);
  static void monitorexit(JavaThread* thread, BasicObjectLock* lock);

  static void new_instance(JavaThread* thread, int index);
  static void newarray(JavaThread* thread, BasicType type, int size);
  static void anewarray(JavaThread* thread, int index, int size);
  static void multianewarray(JavaThread* thread,
                             int         index,
                             int         ndims,
                             int*        dims);

  static void register_finalizer(JavaThread* thread, oop object);

  static void throw_ArithmeticException(JavaThread* thread,
                                        const char* file,
                                        int         line);
  static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread,
                                                   const char* file,
                                                   int         line,
                                                   int         index);
  static void throw_ClassCastException(JavaThread* thread,
                                       const char* file,
                                       int         line);
  static void throw_NullPointerException(JavaThread* thread,
                                         const char* file,
                                         int         line);

  // Helpers for VM calls
 private:
  static const SharkFrame* last_frame(JavaThread *thread) {
    return thread->last_frame().zero_sharkframe();
  }
  static methodOop method(JavaThread *thread) {
    return last_frame(thread)->method();
  }
  static address bcp(JavaThread *thread, int bci) {
    return method(thread)->code_base() + bci;
  }
  static int two_byte_index(JavaThread *thread, int bci) {
    return Bytes::get_Java_u2(bcp(thread, bci) + 1);
  }
  static intptr_t tos_at(JavaThread *thread, int offset) {
    return *(thread->zero_stack()->sp() + offset);
  }

  // Non-VM calls
 public:
  static void dump(const char *name, intptr_t value);
  static bool is_subtype_of(klassOop check_klass, klassOop object_klass);
  static int uncommon_trap(JavaThread* thread, int trap_request);
};

#endif // SHARE_VM_SHARK_SHARKRUNTIME_HPP