src/hotspot/share/code/nmethod.inline.hpp - master - githubmirror/panama-vector

src/hotspot/share/code/nmethod.inline.hpp

58 строк2 KB

Ruben Ayrapetyan

8371458: [REDO] Remove exception handler stub code in C2

24 ноя 2025, 19:59

24 ноя 2025, 19:592177260

/*
 * Copyright (c) 2017, 2025, Oracle and/or its affiliates. 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 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_CODE_NMETHOD_INLINE_HPP
#define SHARE_CODE_NMETHOD_INLINE_HPP

#include "code/nmethod.hpp"

#include "code/nativeInst.hpp"
#include "runtime/atomicAccess.hpp"
#include "runtime/frame.hpp"

inline bool nmethod::is_deopt_pc(address pc) { return is_deopt_entry(pc); }

inline bool nmethod::is_deopt_entry(address pc) {
  return pc == deopt_handler_entry();
}

// class ExceptionCache methods

inline int ExceptionCache::count() { return AtomicAccess::load_acquire(&_count); }

address ExceptionCache::pc_at(int index) {
  assert(index >= 0 && index < count(),"");
  return _pc[index];
}

address ExceptionCache::handler_at(int index) {
  assert(index >= 0 && index < count(),"");
  return _handler[index];
}

// increment_count is only called under lock, but there may be concurrent readers.
inline void ExceptionCache::increment_count() { AtomicAccess::release_store(&_count, _count + 1); }


#endif // SHARE_CODE_NMETHOD_INLINE_HPP