1 /*

     2  * Copyright (c) 2016, 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_JFRJAVASUPPORT_HPP

    26 #define SHARE_VM_JFR_JNI_JFRJAVASUPPORT_HPP

    27 

    28 #include "jfr/jni/jfrJavaCall.hpp"

    29 #include "utilities/exceptions.hpp"

    30 

    31 class Klass;

    32 class JavaThread;

    33 class outputStream;

    34 

    35 class JfrJavaSupport : public AllStatic {

    36  public:

    37   static jobject local_jni_handle(const oop obj, Thread* t);

    38   static jobject local_jni_handle(const jobject handle, Thread* t);

    39   static void destroy_local_jni_handle(const jobject handle);

    40 

    41   static jobject global_jni_handle(const oop obj, Thread* t);

    42   static jobject global_jni_handle(const jobject handle, Thread* t);

    43   static void destroy_global_jni_handle(const jobject handle);

    44 

    45   static oop resolve_non_null(jobject obj);

    46   static void notify_all(jobject obj, TRAPS);

    47   static void set_array_element(jobjectArray arr, jobject element, int index, Thread* t);

    48 

    49   // naked oop result

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

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

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

    53 

    54   static void set_field(JfrJavaArguments* args, TRAPS);

    55   static void get_field(JfrJavaArguments* args, TRAPS);

    56   static void new_object(JfrJavaArguments* args, TRAPS);

    57 

    58   // global jni handle result

    59   static void new_object_global_ref(JfrJavaArguments* args, TRAPS);

    60   static void get_field_global_ref(JfrJavaArguments* args, TRAPS);

    61 

    62   // local jni handle result

    63   static void new_object_local_ref(JfrJavaArguments* args, TRAPS);

    64   static void get_field_local_ref(JfrJavaArguments* args, TRAPS);

    65 

    66   static jstring new_string(const char* c_str, TRAPS);

    67   static jobjectArray new_string_array(int length, TRAPS);

    68 

    69   static jobject new_java_lang_Boolean(bool value, TRAPS);

    70   static jobject new_java_lang_Integer(jint value, TRAPS);

    71   static jobject new_java_lang_Long(jlong value, TRAPS);

    72 

    73   // misc

    74   static Klass* klass(const jobject handle);

    75   // caller needs ResourceMark

    76   static const char* c_str(jstring string, Thread* jt);

    77 

    78   // exceptions

    79   static void throw_illegal_state_exception(const char* message, TRAPS);

    80   static void throw_illegal_argument_exception(const char* message, TRAPS);

    81   static void throw_internal_error(const char* message, TRAPS);

    82   static void throw_out_of_memory_error(const char* message, TRAPS);

    83   static void throw_class_format_error(const char* message, TRAPS);

    84 

    85   static bool is_jdk_jfr_module_available();

    86   static bool is_jdk_jfr_module_available(outputStream* stream, TRAPS);

    87 

    88   static jlong jfr_thread_id(jobject target_thread);

    89 

    90   // critical

    91   static void abort(jstring errorMsg, TRAPS);

    92   static void uncaught_exception(jthrowable throwable, Thread* t);

    93 

    94   // asserts

    95   DEBUG_ONLY(static void check_java_thread_in_vm(Thread* t);)

    96   DEBUG_ONLY(static void check_java_thread_in_native(Thread* t);)

    97 

    98   enum CAUSE {

    99     VM_ERROR,

   100     OUT_OF_MEMORY,

   101     STACK_OVERFLOW,

   102     RUNTIME_EXCEPTION,

   103     UNKNOWN,

   104     NOF_CAUSES

   105   };

   106 

   107   static CAUSE cause();

   108 

   109  private:

   110   static CAUSE _cause;

   111   static void set_cause(jthrowable throwable, Thread* t);

   112 };

   113 

   114 #endif // SHARE_VM_JFR_JNI_JFRJAVASUPPORT_HPP