jdk8-mips64-public/hotspot: src/share/vm/ci/ciMetadata.hpp@bd7a7ce2e264

6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com

     1 /*

     2  * Copyright (c) 1999, 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_CI_CIMETADATA_HPP

    26 #define SHARE_VM_CI_CIMETADATA_HPP

    28 #include "ci/ciBaseObject.hpp"

    29 #include "ci/ciClassList.hpp"

    30 #include "memory/allocation.hpp"

    31 #include "runtime/handles.hpp"

    32 #include "runtime/jniHandles.hpp"

    34 // ciMetadata

    35 //

    36 // Compiler interface to metadata object in the VM, not Java object.

    38 class ciMetadata: public ciBaseObject {

    39   CI_PACKAGE_ACCESS

    40   friend class ciEnv;

    42  protected:

    43   Metadata* _metadata;

    45   ciMetadata(): _metadata(NULL) {}

    46   ciMetadata(Metadata* o): _metadata(o) {}

    48   virtual bool is_classless() const         { return false; }

    49  public:

    50   bool is_loaded() const { return _metadata != NULL || is_classless(); }

    52   virtual bool is_metadata() const          { return true; }

    54   virtual bool is_type() const              { return false; }

    55   virtual bool is_cpcache() const           { return false; }

    56   virtual bool is_return_address() const    { return false; }

    57   virtual bool is_method() const            { return false; }

    58   virtual bool is_method_data() const       { return false; }

    59   virtual bool is_klass() const             { return false; }

    60   virtual bool is_instance_klass() const    { return false; }

    61   virtual bool is_array_klass() const       { return false; }

    62   virtual bool is_obj_array_klass() const   { return false; }

    63   virtual bool is_type_array_klass() const  { return false; }

    64   virtual void dump_replay_data(outputStream* st) { /* do nothing */ }

    66   ciMethod*                as_method() {

    67     assert(is_method(), "bad cast");

    68     return (ciMethod*)this;

    69   }

    70   ciMethodData*            as_method_data() {

    71     assert(is_method_data(), "bad cast");

    72     return (ciMethodData*)this;

    73   }

    74   ciSymbol*                as_symbol() {

    75     assert(is_symbol(), "bad cast");

    76     return (ciSymbol*)this;

    77   }

    78   ciType*                  as_type() {

    79     assert(is_type(), "bad cast");

    80     return (ciType*)this;

    81   }

    82   ciReturnAddress*         as_return_address() {

    83     assert(is_return_address(), "bad cast");

    84     return (ciReturnAddress*)this;

    85   }

    86   ciKlass*                 as_klass() {

    87     assert(is_klass(), "bad cast");

    88     return (ciKlass*)this;

    89   }

    90   ciInstanceKlass*         as_instance_klass() {

    91     assert(is_instance_klass(), "bad cast");

    92     return (ciInstanceKlass*)this;

    93   }

    94   ciArrayKlass*            as_array_klass() {

    95     assert(is_array_klass(), "bad cast");

    96     return (ciArrayKlass*)this;

    97   }

    98   ciObjArrayKlass*         as_obj_array_klass() {

    99     assert(is_obj_array_klass(), "bad cast");

   100     return (ciObjArrayKlass*)this;

   101   }

   102   ciTypeArrayKlass*        as_type_array_klass() {

   103     assert(is_type_array_klass(), "bad cast");

   104     return (ciTypeArrayKlass*)this;

   105   }

   107   Metadata* constant_encoding() { return _metadata; }

   109   bool equals(ciMetadata* obj) const { return (this == obj); }

   111   int hash() { return ident() * 31; } // ???

   113   void print(outputStream* st);

   114   virtual void print_impl(outputStream* st) {}

   115   virtual const char* type_string() { return "ciMetadata"; }

   117   void print()  { print(tty); }

   118   void print_metadata(outputStream* st = tty);

   120 };

   121 #endif // SHARE_VM_CI_CIMETADATA_HPP

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

src/share/vm/ci/ciMetadata.hpp@bd7a7ce2e264

src/share/vm/ci/ciMetadata.hpp