1/*
2 * Copyright (c) 2016, 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
25#ifndef SHARE_JFR_JNI_JFRJAVASUPPORT_HPP
26#define SHARE_JFR_JNI_JFRJAVASUPPORT_HPP
27
28#include "jfr/jni/jfrJavaCall.hpp"
29#include "utilities/exceptions.hpp"
30
31class Klass;
32class JavaThread;
33class outputStream;
34
35class 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_JFR_JNI_JFRJAVASUPPORT_HPP
115