jdk8-mips64-public/hotspot: src/share/vm/oops/typeArrayOop.hpp@efdbe9b904ad

8150426: Wrong cast in metadata_at_put
Summary: Fix cast.
Reviewed-by: dholmes, coleenp, jprovino
Contributed-by: timo.kinnunen@gmail.com

     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 #ifndef SHARE_VM_OOPS_TYPEARRAYOOP_HPP

    26 #define SHARE_VM_OOPS_TYPEARRAYOOP_HPP

    28 #include "oops/arrayOop.hpp"

    29 #include "oops/typeArrayKlass.hpp"

    30 #include "runtime/orderAccess.inline.hpp"

    32 // A typeArrayOop is an array containing basic types (non oop elements).

    33 // It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs}

    34 #include <limits.h>

    36 class typeArrayOopDesc : public arrayOopDesc {

    37  protected:

    38   jchar*    char_base()   const { return (jchar*)   base(T_CHAR); }

    39   jboolean* bool_base()   const { return (jboolean*)base(T_BOOLEAN); }

    40   jbyte*    byte_base()   const { return (jbyte*)   base(T_BYTE); }

    41   jint*     int_base()    const { return (jint*)    base(T_INT); }

    42   jlong*    long_base()   const { return (jlong*)   base(T_LONG); }

    43   jshort*   short_base()  const { return (jshort*)  base(T_SHORT); }

    44   jfloat*   float_base()  const { return (jfloat*)  base(T_FLOAT); }

    45   jdouble*  double_base() const { return (jdouble*) base(T_DOUBLE); }

    47   friend class TypeArrayKlass;

    49  public:

    50   jbyte* byte_at_addr(int which) const {

    51     assert(is_within_bounds(which), "index out of bounds");

    52     return &byte_base()[which];

    53   }

    55   jboolean* bool_at_addr(int which) const {

    56     assert(is_within_bounds(which), "index out of bounds");

    57     return &bool_base()[which];

    58   }

    60   jchar* char_at_addr(int which) const {

    61     assert(is_within_bounds(which), "index out of bounds");

    62     return &char_base()[which];

    63   }

    65   jint* int_at_addr(int which) const {

    66     assert(is_within_bounds(which), "index out of bounds");

    67     return &int_base()[which];

    68   }

    70   jshort* short_at_addr(int which) const {

    71     assert(is_within_bounds(which), "index out of bounds");

    72     return &short_base()[which];

    73   }

    75   jushort* ushort_at_addr(int which) const {  // for field descriptor arrays

    76     assert(is_within_bounds(which), "index out of bounds");

    77     return (jushort*) &short_base()[which];

    78   }

    80   jlong* long_at_addr(int which) const {

    81     assert(is_within_bounds(which), "index out of bounds");

    82     return &long_base()[which];

    83   }

    85   jfloat* float_at_addr(int which) const {

    86     assert(is_within_bounds(which), "index out of bounds");

    87     return &float_base()[which];

    88   }

    90   jdouble* double_at_addr(int which) const {

    91     assert(is_within_bounds(which), "index out of bounds");

    92     return &double_base()[which];

    93   }

    95   jbyte byte_at(int which) const                  { return *byte_at_addr(which); }

    96   void byte_at_put(int which, jbyte contents)     { *byte_at_addr(which) = contents; }

    98   jboolean bool_at(int which) const               { return *bool_at_addr(which); }

    99   void bool_at_put(int which, jboolean contents)  { *bool_at_addr(which) = (((jint)contents) & 1); }

   101   jchar char_at(int which) const                  { return *char_at_addr(which); }

   102   void char_at_put(int which, jchar contents)     { *char_at_addr(which) = contents; }

   104   jint int_at(int which) const                    { return *int_at_addr(which); }

   105   void int_at_put(int which, jint contents)       { *int_at_addr(which) = contents; }

   107   jshort short_at(int which) const                { return *short_at_addr(which); }

   108   void short_at_put(int which, jshort contents)   { *short_at_addr(which) = contents; }

   110   jushort ushort_at(int which) const              { return *ushort_at_addr(which); }

   111   void ushort_at_put(int which, jushort contents) { *ushort_at_addr(which) = contents; }

   113   jlong long_at(int which) const                  { return *long_at_addr(which); }

   114   void long_at_put(int which, jlong contents)     { *long_at_addr(which) = contents; }

   116   jfloat float_at(int which) const                { return *float_at_addr(which); }

   117   void float_at_put(int which, jfloat contents)   { *float_at_addr(which) = contents; }

   119   jdouble double_at(int which) const              { return *double_at_addr(which); }

   120   void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; }

   122   jbyte byte_at_acquire(int which) const              { return OrderAccess::load_acquire(byte_at_addr(which)); }

   123   void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); }

   125   // Java thinks metadata arrays are just arrays of either long or int, since

   126   // there doesn't seem to be T_ADDRESS, so this is a bit of unfortunate

   127   // casting

   128 #ifdef _LP64

   129   Metadata* metadata_at(int which) const {

   130     return (Metadata*)*long_at_addr(which); }

   131   void metadata_at_put(int which, Metadata* contents) {

   132     *long_at_addr(which) = (jlong)contents;

   133   }

   134 #else

   135   Metadata* metadata_at(int which) const {

   136     return (Metadata*)*int_at_addr(which); }

   137   void metadata_at_put(int which, Metadata* contents) {

   138     *int_at_addr(which) = (int)contents;

   139   }

   140 #endif // _LP64

   142   // Sizing

   144   // Returns the number of words necessary to hold an array of "len"

   145   // elements each of the given "byte_size".

   146  private:

   147   static int object_size(int lh, int length) {

   148     int instance_header_size = Klass::layout_helper_header_size(lh);

   149     int element_shift = Klass::layout_helper_log2_element_size(lh);

   150     DEBUG_ONLY(BasicType etype = Klass::layout_helper_element_type(lh));

   151     assert(length <= arrayOopDesc::max_array_length(etype), "no overflow");

   153     julong size_in_bytes = (juint)length;

   154     size_in_bytes <<= element_shift;

   155     size_in_bytes += instance_header_size;

   156     julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize);

   157     assert(size_in_words <= (julong)max_jint, "no overflow");

   159     return align_object_size((intptr_t)size_in_words);

   160   }

   162  public:

   163   int object_size() {

   164     TypeArrayKlass* tk = TypeArrayKlass::cast(klass());

   165     return object_size(tk->layout_helper(), length());

   166   }

   167 };

   169 #endif // SHARE_VM_OOPS_TYPEARRAYOOP_HPP

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