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