| /* |
| * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP |
| #define SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP |
| |
| #include "jvmtifiles/jvmtiEnv.hpp" |
| |
| |
| class JvmtiConstantPoolReconstituter : public StackObj { |
| private: |
| int _cpool_size; |
| SymbolHashMap* _symmap; |
| SymbolHashMap* _classmap; |
| constantPoolHandle _cpool; |
| InstanceKlass* _ik; |
| jvmtiError _err; |
| |
| protected: |
| InstanceKlass* ik() { return _ik; }; |
| constantPoolHandle cpool() { return _cpool; }; |
| |
| u2 symbol_to_cpool_index(Symbol* sym) { |
| return _symmap->symbol_to_value(sym); |
| } |
| |
| u2 class_symbol_to_cpool_index(Symbol* sym) { |
| return _classmap->symbol_to_value(sym); |
| } |
| |
| public: |
| // Calls to this constructor must be proceeded by a ResourceMark |
| // and a HandleMark |
| JvmtiConstantPoolReconstituter(InstanceKlass* ik){ |
| set_error(JVMTI_ERROR_NONE); |
| _ik = ik; |
| _cpool = constantPoolHandle(Thread::current(), ik->constants()); |
| _symmap = new SymbolHashMap(); |
| _classmap = new SymbolHashMap(); |
| _cpool_size = _cpool->hash_entries_to(_symmap, _classmap); |
| if (_cpool_size == 0) { |
| set_error(JVMTI_ERROR_OUT_OF_MEMORY); |
| } else if (_cpool_size < 0) { |
| set_error(JVMTI_ERROR_INTERNAL); |
| } |
| } |
| |
| ~JvmtiConstantPoolReconstituter() { |
| if (_symmap != NULL) { |
| delete _symmap; |
| _symmap = NULL; |
| } |
| if (_classmap != NULL) { |
| delete _classmap; |
| _classmap = NULL; |
| } |
| } |
| |
| |
| void set_error(jvmtiError err) { _err = err; } |
| jvmtiError get_error() { return _err; } |
| |
| int cpool_size() { return _cpool_size; } |
| |
| void copy_cpool_bytes(unsigned char *cpool_bytes) { |
| if (cpool_bytes == NULL) { |
| assert(cpool_bytes != NULL, "cpool_bytes pointer must not be NULL"); |
| return; |
| } |
| cpool()->copy_cpool_bytes(cpool_size(), _symmap, cpool_bytes); |
| } |
| }; |
| |
| |
| class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter { |
| private: |
| size_t _buffer_size; |
| u1* _buffer; |
| u1* _buffer_ptr; |
| Thread* _thread; |
| |
| enum { |
| // initial size should be power of two |
| initial_buffer_size = 1024 |
| }; |
| |
| inline Thread* thread() { return _thread; } |
| |
| void write_class_file_format(); |
| void write_field_infos(); |
| void write_method_infos(); |
| void write_method_info(const methodHandle& method); |
| void write_code_attribute(const methodHandle& method); |
| void write_exceptions_attribute(ConstMethod* const_method); |
| void write_synthetic_attribute(); |
| void write_class_attributes(); |
| void write_source_file_attribute(); |
| void write_source_debug_extension_attribute(); |
| u2 line_number_table_entries(const methodHandle& method); |
| void write_line_number_table_attribute(const methodHandle& method, u2 num_entries); |
| void write_local_variable_table_attribute(const methodHandle& method, u2 num_entries); |
| void write_local_variable_type_table_attribute(const methodHandle& method, u2 num_entries); |
| void write_stackmap_table_attribute(const methodHandle& method, int stackmap_table_len); |
| u2 inner_classes_attribute_length(); |
| void write_inner_classes_attribute(int length); |
| void write_signature_attribute(u2 generic_signaure_index); |
| void write_attribute_name_index(const char* name); |
| void write_annotations_attribute(const char* attr_name, AnnotationArray* annos); |
| void write_bootstrapmethod_attribute(); |
| |
| address writeable_address(size_t size); |
| void write_u1(u1 x); |
| void write_u2(u2 x); |
| void write_u4(u4 x); |
| void write_u8(u8 x); |
| |
| public: |
| // Calls to this constructor must be proceeded by a ResourceMark |
| // and a HandleMark |
| JvmtiClassFileReconstituter(InstanceKlass* ik) : |
| JvmtiConstantPoolReconstituter(ik) { |
| _buffer_size = initial_buffer_size; |
| _buffer = _buffer_ptr = NEW_RESOURCE_ARRAY(u1, _buffer_size); |
| _thread = Thread::current(); |
| write_class_file_format(); |
| }; |
| |
| size_t class_file_size() { return _buffer_ptr - _buffer; } |
| |
| u1* class_file_bytes() { return _buffer; } |
| |
| static void copy_bytecodes(const methodHandle& method, unsigned char* bytecodes); |
| }; |
| |
| #endif // SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP |