hotspot/src/share/vm/utilities/growableArray.cpp
author jcoomes
Sun, 11 Oct 2009 16:19:25 -0700
changeset 5402 c51fd0c1d005
parent 2122 6e2cad7ee1f5
child 5547 f4b087cbb361
permissions -rw-r--r--
6888953: some calls to function-like macros are missing semicolons Reviewed-by: pbk, kvn
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
     2
 * Copyright 1997-2005 Sun Microsystems, Inc.  All Rights Reserved.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    19
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    20
 * CA 95054 USA or visit www.sun.com if you need additional information or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    21
 * have any questions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
# include "incls/_precompiled.incl"
489c9b5090e2 Initial load
duke
parents:
diff changeset
    25
# include "incls/_growableArray.cpp.incl"
489c9b5090e2 Initial load
duke
parents:
diff changeset
    26
489c9b5090e2 Initial load
duke
parents:
diff changeset
    27
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    28
void GenericGrowableArray::set_nesting() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    29
  if (on_stack()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
    _nesting = Thread::current()->resource_area()->nesting();
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
void GenericGrowableArray::check_nesting() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
  // Check for insidious allocation bug: if a GrowableArray overflows, the
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
  // grown array must be allocated under the same ResourceMark as the original.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
  // Otherwise, the _data array will be deallocated too early.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
  if (on_stack() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
      _nesting != Thread::current()->resource_area()->nesting()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
    fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
void* GenericGrowableArray::raw_allocate(int elementSize) {
2122
6e2cad7ee1f5 6806226: Signed integer overflow in growable array code causes JVM crash
jmasa
parents: 1
diff changeset
    46
  assert(_max >= 0, "integer overflow");
6e2cad7ee1f5 6806226: Signed integer overflow in growable array code causes JVM crash
jmasa
parents: 1
diff changeset
    47
  size_t byte_size = elementSize * (size_t) _max;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
  if (on_stack()) {
2122
6e2cad7ee1f5 6806226: Signed integer overflow in growable array code causes JVM crash
jmasa
parents: 1
diff changeset
    49
    return (void*)resource_allocate_bytes(byte_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
  } else if (on_C_heap()) {
2122
6e2cad7ee1f5 6806226: Signed integer overflow in growable array code causes JVM crash
jmasa
parents: 1
diff changeset
    51
    return (void*)AllocateHeap(byte_size, "GrET in " __FILE__);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
  } else {
2122
6e2cad7ee1f5 6806226: Signed integer overflow in growable array code causes JVM crash
jmasa
parents: 1
diff changeset
    53
    return _arena->Amalloc(byte_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
}