jdk8-mips64-public/hotspot: src/share/vm/runtime/stackValue.hpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     1 /*

     2  * Copyright (c) 1997, 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 #ifndef SHARE_VM_RUNTIME_STACKVALUE_HPP

    26 #define SHARE_VM_RUNTIME_STACKVALUE_HPP

    28 #include "code/location.hpp"

    29 #include "runtime/handles.hpp"

    30 #include "utilities/top.hpp"

    32 class StackValue : public ResourceObj {

    33  private:

    34   BasicType _type;

    35   intptr_t  _i; // Blank java stack slot value

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

    37  public:

    39   StackValue(intptr_t value) {

    40     _type  = T_INT;

    41     _i     = value;

    42   }

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

    45     _type    = T_OBJECT;

    46     _i       = scalar_replaced;

    47     _o       = value;

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

    49   }

    51   StackValue() {

    52     _type   = T_CONFLICT;

    53     _i      = 0;

    54   }

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

    57   StackValue(intptr_t o, BasicType t) {

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

    59     _type   = t;

    60     _i      = o;

    61   }

    63   Handle get_obj() const {

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

    65     return _o;

    66   }

    68   bool obj_is_scalar_replaced() const {

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

    70     return _i != 0;

    71   }

    73   void set_obj(Handle value) {

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

    75     _o = value;

    76   }

    78   intptr_t get_int() const {

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

    80     return _i;

    81   }

    83   // For special case in deopt.

    84   intptr_t get_int(BasicType t) const {

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

    86     return _i;

    87   }

    89   void set_int(intptr_t value) {

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

    91     _i = value;

    92   }

    94   BasicType type() const { return  _type; }

    96   bool equal(StackValue *value) {

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

    98     if (_type == T_OBJECT)

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

   100     else {

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

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

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

   104     }

   105   }

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

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

   110 #ifndef PRODUCT

   111  public:

   112   // Printing

   113   void print_on(outputStream* st) const;

   114 #endif

   115 };

   117 #endif // SHARE_VM_RUNTIME_STACKVALUE_HPP

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

src/share/vm/runtime/stackValue.hpp@b985cbb00e68

src/share/vm/runtime/stackValue.hpp