jdk8-mips64-public/hotspot: src/share/vm/utilities/growableArray.cpp@e5003079dfa5

     1 /*

     2  * Copyright (c) 1997, 2012, 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 "runtime/thread.inline.hpp"

    28 #include "utilities/growableArray.hpp"

    30 #ifdef ASSERT

    31 void GenericGrowableArray::set_nesting() {

    32   if (on_stack()) {

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

    34   }

    35 }

    37 void GenericGrowableArray::check_nesting() {

    38   // Check for insidious allocation bug: if a GrowableArray overflows, the

    39   // grown array must be allocated under the same ResourceMark as the original.

    40   // Otherwise, the _data array will be deallocated too early.

    41   if (on_stack() &&

    42       _nesting != Thread::current()->resource_area()->nesting()) {

    43     fatal("allocation bug: GrowableArray could grow within nested ResourceMark");

    44   }

    45 }

    46 #endif

    48 void* GenericGrowableArray::raw_allocate(int elementSize) {

    49   assert(_max >= 0, "integer overflow");

    50   size_t byte_size = elementSize * (size_t) _max;

    51   if (on_stack()) {

    52     return (void*)resource_allocate_bytes(byte_size);

    53   } else if (on_C_heap()) {

    54     return (void*)AllocateHeap(byte_size, _memflags);

    55   } else {

    56     return _arena->Amalloc(byte_size);

    57   }

    58 }

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