/*

 * Copyright (c) 2000, 2014, 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.

 *

 */

#include "precompiled.hpp"

#include "memory/resourceArea.hpp"

#include "runtime/thread.inline.hpp"

#include "utilities/array.hpp"

#ifdef ASSERT

void ResourceArray::init_nesting() {

  _nesting = Thread::current()->resource_area()->nesting();

}

#endif

void ResourceArray::sort(size_t esize, ftype f) {

  if (!is_empty()) qsort(_data, length(), esize, f);

}

template <MEMFLAGS F> void CHeapArray<F>::sort(size_t esize, ftype f) {

  if (!is_empty()) qsort(_data, length(), esize, f);

}

void ResourceArray::expand(size_t esize, int i, int& size) {

  // make sure we are expanding within the original resource mark

  assert(

    _nesting == Thread::current()->resource_area()->nesting(),

    "allocating outside original resource mark"

  );

  // determine new size

  if (size == 0) size = 4; // prevent endless loop

  while (i >= size) size *= 2;

  // allocate and initialize new data section

  void* data = resource_allocate_bytes(esize * size);

  memcpy(data, _data, esize * length());

  _data = data;

}

template <MEMFLAGS F> void CHeapArray<F>::expand(size_t esize, int i, int& size) {

  // determine new size

  if (size == 0) size = 4; // prevent endless loop

  while (i >= size) size *= 2;

  // allocate and initialize new data section

  void* data = NEW_C_HEAP_ARRAY(char*, esize * size, F);

  memcpy(data, _data, esize * length());

  FREE_C_HEAP_ARRAY(char*, _data);

  _data = data;

}

void ResourceArray::remove_at(size_t esize, int i) {

  assert(0 <= i && i < length(), "index out of bounds");

  _length--;

  void* dst = (char*)_data + i*esize;

  void* src = (char*)dst + esize;

  size_t cnt = (length() - i)*esize;

  memmove(dst, src, cnt);

}

template <MEMFLAGS F> void CHeapArray<F>::remove_at(size_t esize, int i) {

  assert(0 <= i && i < length(), "index out of bounds");

  _length--;

  void* dst = (char*)_data + i*esize;

  void* src = (char*)dst + esize;

  size_t cnt = (length() - i)*esize;

  memmove(dst, src, cnt);

}