jdk8-mips64-public/hotspot: src/share/vm/runtime/stackValue.hpp@b109e761e927

6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
Summary: Disable escape analysis when jvmti/debugger is used. Add support for EA ibto SA.
Reviewed-by: never

     1 /*

     2  * Copyright 1997-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 class StackValue : public ResourceObj {

    26  private:

    27   BasicType _type;

    28   intptr_t  _i; // Blank java stack slot value

    29   Handle    _o; // Java stack slot value interpreted as a Handle

    30  public:

    32   StackValue(intptr_t value) {

    33     _type  = T_INT;

    34     _i     = value;

    35   }

    37   StackValue(Handle value, intptr_t scalar_replaced = 0) {

    38     _type    = T_OBJECT;

    39     _i       = scalar_replaced;

    40     _o       = value;

    41     assert(_i == 0 || _o.is_null(), "not null object should not be marked as scalar replaced");

    42   }

    44   StackValue() {

    45     _type   = T_CONFLICT;

    46     _i      = 0;

    47   }

    49   // Only used during deopt- preserve object type.

    50   StackValue(intptr_t o, BasicType t) {

    51     assert(t == T_OBJECT, "should not be used");

    52     _type   = t;

    53     _i      = o;

    54   }

    56   Handle get_obj() const {

    57     assert(type() == T_OBJECT, "type check");

    58     return _o;

    59   }

    61   bool obj_is_scalar_replaced() const {

    62     assert(type() == T_OBJECT, "type check");

    63     return _i != 0;

    64   }

    66   void set_obj(Handle value) {

    67     assert(type() == T_OBJECT, "type check");

    68     _o = value;

    69   }

    71   intptr_t get_int() const {

    72     assert(type() == T_INT, "type check");

    73     return _i;

    74   }

    76   // For special case in deopt.

    77   intptr_t get_int(BasicType t) const {

    78     assert(t == T_OBJECT && type() == T_OBJECT, "type check");

    79     return _i;

    80   }

    82   void set_int(intptr_t value) {

    83     assert(type() == T_INT, "type check");

    84     _i = value;

    85   }

    87   BasicType type() const { return  _type; }

    89   bool equal(StackValue *value) {

    90     if (_type != value->_type) return false;

    91     if (_type == T_OBJECT)

    92       return (_o == value->_o);

    93     else {

    94       assert(_type == T_INT, "sanity check");

    95       // [phh] compare only low addressed portions of intptr_t slots

    96       return (*(int *)&_i == *(int *)&value->_i);

    97     }

    98   }

   100   static StackValue* create_stack_value(const frame* fr, const RegisterMap* reg_map, ScopeValue* sv);

   101   static BasicLock*  resolve_monitor_lock(const frame* fr, Location location);

   103 #ifndef PRODUCT

   104  public:

   105   // Printing

   106   void print_on(outputStream* st) const;

   107 #endif

   108 };

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/stackValue.hpp@b109e761e927

src/share/vm/runtime/stackValue.hpp