1 /*

     2  * Copyright (c) 2019, 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 #ifndef SHARE_JVMCI_JVMCIOBJECT_HPP

    25 #define SHARE_JVMCI_JVMCIOBJECT_HPP

    26 

    27 #include "jni.h"

    28 #include "utilities/debug.hpp"

    29 

    30 class JVMCIArray;

    31 class JVMCIPrimitiveArray;

    32 class JVMCIObjectArray;

    33 

    34 class JVMCIObject {

    35 

    36  private:

    37   jobject _object;

    38   bool _is_hotspot;

    39 

    40  public:

    41   JVMCIObject(): _object(NULL), _is_hotspot(false) {}

    42   JVMCIObject(jobject o, bool is_hotspot): _object(o), _is_hotspot(is_hotspot) { }

    43 

    44   static JVMCIObject create(jobject o, bool is_hotspot) { JVMCIObject r(o, is_hotspot); return r; }

    45   jobject as_jobject() { return _object; }

    46   jobject as_jweak()   { return (jweak) _object; }

    47   jstring as_jstring() { return (jstring) _object; }

    48   bool is_hotspot() { return _is_hotspot; }

    49 

    50   bool is_null() const { return _object == NULL; }

    51   bool is_non_null() const { return _object != NULL; }

    52 

    53   operator JVMCIArray();

    54   operator JVMCIPrimitiveArray();

    55   operator JVMCIObjectArray();

    56 };

    57 

    58 class JVMCIArray : public JVMCIObject {

    59  public:

    60   JVMCIArray() {}

    61   JVMCIArray(jobject o, bool is_hotspot): JVMCIObject(o, is_hotspot) {}

    62   jarray as_jobject() { return (jarray) JVMCIObject::as_jobject(); }

    63 };

    64 

    65 class JVMCIObjectArray : public JVMCIArray {

    66  public:

    67   JVMCIObjectArray() {}

    68   JVMCIObjectArray(void* v): JVMCIArray() { assert(v == NULL, "must be NULL"); }

    69   JVMCIObjectArray(jobject o, bool is_hotspot): JVMCIArray(o, is_hotspot) {}

    70 

    71   jobjectArray as_jobject() { return (jobjectArray) JVMCIArray::as_jobject(); }

    72 };

    73 

    74 class JVMCIPrimitiveArray : public JVMCIArray {

    75  public:

    76   JVMCIPrimitiveArray() {}

    77   JVMCIPrimitiveArray(void* v): JVMCIArray() { assert(v == NULL, "must be NULL"); }

    78   JVMCIPrimitiveArray(jobject o, bool is_hotspot): JVMCIArray(o, is_hotspot) {}

    79 

    80   jbooleanArray as_jbooleanArray() { return (jbooleanArray) as_jobject(); }

    81   jbyteArray    as_jbyteArray()    { return (jbyteArray) as_jobject();    }

    82   jcharArray    as_jcharArray()    { return (jcharArray) as_jobject();    }

    83   jshortArray   as_jshortArray()   { return (jshortArray) as_jobject();   }

    84   jintArray     as_jintArray()     { return (jintArray) as_jobject();     }

    85   jfloatArray   as_jfloatArray()   { return (jfloatArray) as_jobject();   }

    86   jlongArray    as_jlongArray()    { return (jlongArray) as_jobject();    }

    87   jdoubleArray  as_jdoubleArray()  { return (jdoubleArray) as_jobject();  }

    88 };

    89 

    90 inline JVMCIObject::operator JVMCIArray() { return JVMCIArray(_object, _is_hotspot); }

    91 inline JVMCIObject::operator JVMCIPrimitiveArray() { return JVMCIPrimitiveArray(_object, _is_hotspot); }

    92 inline JVMCIObject::operator JVMCIObjectArray() { return JVMCIObjectArray(_object, _is_hotspot); }

    93 

    94 #endif // SHARE_JVMCI_JVMCIOBJECT_HPP