jdk8-mips64-public/hotspot: src/share/vm/utilities/array.cpp@24b9c7f4cae6

     1 /*

     2  * Copyright (c) 2000, 2010, 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  */

    25 #include "precompiled.hpp"

    26 #include "memory/resourceArea.hpp"

    27 #include "utilities/array.hpp"

    28 #ifdef TARGET_OS_FAMILY_linux

    29 # include "thread_linux.inline.hpp"

    30 #endif

    31 #ifdef TARGET_OS_FAMILY_solaris

    32 # include "thread_solaris.inline.hpp"

    33 #endif

    34 #ifdef TARGET_OS_FAMILY_windows

    35 # include "thread_windows.inline.hpp"

    36 #endif

    37 #ifdef TARGET_OS_FAMILY_bsd

    38 # include "thread_bsd.inline.hpp"

    39 #endif

    42 #ifdef ASSERT

    43 void ResourceArray::init_nesting() {

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

    45 }

    46 #endif

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

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

    51 }

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

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

    54 }

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

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

    59   assert(

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

    61     "allocating outside original resource mark"

    62   );

    63   // determine new size

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

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

    66   // allocate and initialize new data section

    67   void* data = resource_allocate_bytes(esize * size);

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

    69   _data = data;

    70 }

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

    74   // determine new size

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

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

    77   // allocate and initialize new data section

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

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

    80   FREE_C_HEAP_ARRAY(char*, _data, F);

    81   _data = data;

    82 }

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

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

    87   _length--;

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

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

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

    91   memmove(dst, src, cnt);

    92 }

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

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

    96   _length--;

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

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

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

   100   memmove(dst, src, cnt);

   101 }

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