1 /*

     2  * Copyright (c) 2017, 2018, 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  */

    24 

    25 #ifndef SHARE_VM_JFR_JNI_JFRJAVACALL_HPP

    26 #define SHARE_VM_JFR_JNI_JFRJAVACALL_HPP

    27 

    28 #include "jni.h"

    29 #include "jfr/utilities/jfrAllocation.hpp"

    30 #include "utilities/exceptions.hpp"

    31 

    32 class JavaCallArguments;

    33 class JavaThread;

    34 class JavaValue;

    35 class Klass;

    36 class Symbol;

    37 

    38 class JfrJavaArguments : public StackObj {

    39   friend class JfrJavaCall;

    40  public:

    41   JfrJavaArguments(JavaValue* result);

    42   JfrJavaArguments(JavaValue* result, const char* klass_name, const char* name, const char* signature, TRAPS);

    43   JfrJavaArguments(JavaValue* result, const Klass* klass, const Symbol* name, const Symbol* signature);

    44 

    45   Klass* klass() const;

    46   void set_klass(const char* klass_name, TRAPS);

    47   void set_klass(const Klass* klass);

    48 

    49   Symbol* name() const;

    50   void set_name(const char* name, TRAPS);

    51   void set_name(const Symbol* name);

    52 

    53   Symbol* signature() const;

    54   void set_signature(const char* signature, TRAPS);

    55   void set_signature(const Symbol* signature);

    56 

    57   int array_length() const;

    58   void set_array_length(int length);

    59 

    60   JavaValue* result() const;

    61 

    62   bool has_receiver() const;

    63   void set_receiver(const oop receiver);

    64   void set_receiver(Handle receiver);

    65   oop receiver() const;

    66 

    67   // parameters

    68   void push_oop(const oop obj);

    69   void push_oop(Handle h_obj);

    70   void push_jobject(jobject h);

    71   void push_int(jint i);

    72   void push_double(jdouble d);

    73   void push_long(jlong l);

    74   void push_float(jfloat f);

    75 

    76   int length() const;

    77   const JavaValue& param(int idx) const;

    78 

    79  private:

    80   class Parameters {

    81     friend class JfrJavaArguments;

    82    private:

    83     enum { SIZE = 16};

    84     JavaValue _storage[SIZE];

    85     int _storage_index;

    86     int _java_stack_slots;

    87 

    88     Parameters();

    89     Parameters(const Parameters&); // no impl

    90     Parameters& operator=(const Parameters&); // no impl

    91 

    92     void push(const JavaValue& value);

    93     void push_large(const JavaValue& value);

    94 

    95     void push_oop(const oop obj);

    96     void push_oop(Handle h_obj);

    97     void push_jobject(jobject h);

    98     void push_jint(jint i);

    99     void push_jdouble(jdouble d);

   100     void push_jlong(jlong l);

   101     void push_jfloat(jfloat f);

   102 

   103     bool has_receiver() const;

   104     void set_receiver(const oop receiver);

   105     void set_receiver(Handle receiver);

   106     oop receiver() const;

   107 

   108     int length() const;

   109     int java_stack_slots() const;

   110 

   111     void copy(JavaCallArguments& args, TRAPS) const;

   112     const JavaValue& values(int idx) const;

   113   };

   114 

   115   Parameters _params;

   116   const JavaValue* const _result;

   117   const Klass* _klass;

   118   const Symbol* _name;

   119   const Symbol* _signature;

   120   int _array_length;

   121 

   122   int java_call_arg_slots() const;

   123   void copy(JavaCallArguments& args, TRAPS);

   124 };

   125 

   126 class JfrJavaCall : public AllStatic {

   127   friend class JfrJavaSupport;

   128  private:

   129   static void call_static(JfrJavaArguments* args, TRAPS);

   130   static void call_special(JfrJavaArguments* args, TRAPS);

   131   static void call_virtual(JfrJavaArguments* args, TRAPS);

   132 };

   133 

   134 #endif // SHARE_VM_JFR_JNI_JFRJAVACALL_HPP