1 /*
   2  * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "oops/compiledICHolder.hpp"
  27 #include "runtime/atomic.hpp"
  28 
  29 volatile int CompiledICHolder::_live_count;
  30 volatile int CompiledICHolder::_live_not_claimed_count;
  31 
  32 
  33 CompiledICHolder::CompiledICHolder(Metadata* metadata, Klass* klass, bool is_method)
  34   : _holder_metadata(metadata), _holder_klass(klass), _is_metadata_method(is_method) {
  35 #ifdef ASSERT
  36   Atomic::inc(&_live_count);
  37   Atomic::inc(&_live_not_claimed_count);
  38 #endif // ASSERT
  39 }
  40 
  41 #ifdef ASSERT
  42 CompiledICHolder::~CompiledICHolder() {
  43   assert(_live_count > 0, "underflow");
  44   Atomic::dec(&_live_count);
  45 }
  46 #endif // ASSERT
  47 
  48 // Printing
  49 
  50 void CompiledICHolder::print_on(outputStream* st) const {
  51   st->print("%s", internal_name());
  52   st->print(" - metadata: "); holder_metadata()->print_value_on(st); st->cr();
  53   st->print(" - klass:    "); holder_klass()->print_value_on(st); st->cr();
  54 }
  55 
  56 void CompiledICHolder::print_value_on(outputStream* st) const {
  57   st->print("%s", internal_name());
  58 }
  59 
  60 
  61 // Verification
  62 
  63 void CompiledICHolder::verify_on(outputStream* st) {
  64   guarantee(holder_metadata()->is_method() || holder_metadata()->is_klass(), "should be method or klass");
  65   guarantee(holder_klass()->is_klass(),   "should be klass");
  66 }
  67 
  68 #ifdef ASSERT
  69 
  70 void CompiledICHolder::claim() {
  71   Atomic::dec(&_live_not_claimed_count);
  72 }
  73 
  74 #endif // ASSERT