1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef HOTSPOT_SHARE_OOPS_REFLECTIONACCESSORIMPLKLASSHELPER_HPP 27 #define HOTSPOT_SHARE_OOPS_REFLECTIONACCESSORIMPLKLASSHELPER_HPP 28 29 #include "memory/allocation.hpp" 30 31 class InstanceKlass; 32 33 // Helper for classes derived from jdk/internal/reflect/{Method|Constructor}AccessorImpl: 34 // offers convenience functions to extract the names of target class/method/signature 35 // from the constant pool of these classes. 36 class ReflectionAccessorImplKlassHelper: public AllStatic { 37 38 // Returns true if k is of type jdk/internal/reflect/GeneratedMethodAccessorXXX. 39 static bool is_generated_method_accessor(const InstanceKlass* k); 40 41 // Returns true if k is of type jdk/internal/reflect/GeneratedConstructorAccessorXXX. 42 static bool is_generated_constructor_accessor(const InstanceKlass* k); 43 44 // Returns true if k is of type jdk/internal/reflect/GeneratedSerializationConstructorAccessorXXX. 45 static bool is_generated_method_serialization_constructor_accessor(const InstanceKlass* k); 46 47 // Assuming k is of type jdk/internal/reflect/Generated{SerializationConstructor|Constructor|Method}AccessorXXX, 48 // the name of the target class as resource-area allocated string. 49 static const char* get_target_class_name(const InstanceKlass* k); 50 51 // Assuming k is of type jdk/internal/reflect/Generated{SerializationConstructor|Constructor|Method}AccessorXXX, 52 // the name of the target method as resource-area allocated string. 53 static const char* get_target_method_name(const InstanceKlass* k); 54 55 // Assuming k is of type jdk/internal/reflect/Generated{SerializationConstructor|Constructor|Method}AccessorXXX, 56 // the signature of the target method as resource-area allocated string. 57 static const char* get_target_method_signature(const InstanceKlass* k); 58 59 public: 60 61 // Returns true if k is of type jdk/internal/reflect/Generated{SerializationConstructor|Constructor|Method}AccessorXXX 62 // and it is safe to call print_invocation_target(k) 63 static bool is_generated_accessor(const Klass* k); 64 65 // Assuming k is of type jdk/internal/reflect/Generated{SerializationConstructor|Constructor|Method}AccessorXXX, 66 // print out target class, method, signature in one line. 67 static void print_invocation_target(outputStream* out, Klass* k); 68 69 }; 70 71 72 73 74 #endif /* HOTSPOT_SHARE_OOPS_REFLECTIONACCESSORIMPLKLASSHELPER_HPP */ 75