aoqi@0: /* aoqi@0: * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. aoqi@0: * aoqi@0: * This code is free software; you can redistribute it and/or modify it aoqi@0: * under the terms of the GNU General Public License version 2 only, as aoqi@0: * published by the Free Software Foundation. aoqi@0: * aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that aoqi@0: * accompanied this code). aoqi@0: * aoqi@0: * You should have received a copy of the GNU General Public License version aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation, aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. aoqi@0: * aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA aoqi@0: * or visit www.oracle.com if you need additional information or have any aoqi@0: * questions. aoqi@0: * aoqi@0: */ aoqi@0: aoqi@0: #ifndef SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP aoqi@0: #define SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP aoqi@0: aoqi@0: #include "jvmtifiles/jvmtiEnv.hpp" aoqi@0: aoqi@0: aoqi@0: class JvmtiConstantPoolReconstituter : public StackObj { aoqi@0: private: aoqi@0: int _cpool_size; aoqi@0: SymbolHashMap* _symmap; aoqi@0: SymbolHashMap* _classmap; aoqi@0: constantPoolHandle _cpool; aoqi@0: instanceKlassHandle _ikh; aoqi@0: jvmtiError _err; aoqi@0: aoqi@0: protected: aoqi@0: instanceKlassHandle ikh() { return _ikh; }; aoqi@0: constantPoolHandle cpool() { return _cpool; }; aoqi@0: aoqi@0: u2 symbol_to_cpool_index(Symbol* sym) { aoqi@0: return _symmap->symbol_to_value(sym); aoqi@0: } aoqi@0: aoqi@0: u2 class_symbol_to_cpool_index(Symbol* sym) { aoqi@0: return _classmap->symbol_to_value(sym); aoqi@0: } aoqi@0: aoqi@0: public: aoqi@0: // Calls to this constructor must be proceeded by a ResourceMark aoqi@0: // and a HandleMark aoqi@0: JvmtiConstantPoolReconstituter(instanceKlassHandle ikh){ aoqi@0: set_error(JVMTI_ERROR_NONE); aoqi@0: _ikh = ikh; aoqi@0: _cpool = constantPoolHandle(Thread::current(), ikh->constants()); aoqi@0: _symmap = new SymbolHashMap(); aoqi@0: _classmap = new SymbolHashMap(); aoqi@0: _cpool_size = _cpool->hash_entries_to(_symmap, _classmap); aoqi@0: if (_cpool_size == 0) { aoqi@0: set_error(JVMTI_ERROR_OUT_OF_MEMORY); aoqi@0: } else if (_cpool_size < 0) { aoqi@0: set_error(JVMTI_ERROR_INTERNAL); aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: ~JvmtiConstantPoolReconstituter() { aoqi@0: if (_symmap != NULL) { aoqi@0: os::free(_symmap, mtClass); aoqi@0: _symmap = NULL; aoqi@0: } aoqi@0: if (_classmap != NULL) { aoqi@0: os::free(_classmap, mtClass); aoqi@0: _classmap = NULL; aoqi@0: } aoqi@0: } aoqi@0: aoqi@0: aoqi@0: void set_error(jvmtiError err) { _err = err; } aoqi@0: jvmtiError get_error() { return _err; } aoqi@0: aoqi@0: int cpool_size() { return _cpool_size; } aoqi@0: aoqi@0: void copy_cpool_bytes(unsigned char *cpool_bytes) { aoqi@0: if (cpool_bytes == NULL) { aoqi@0: assert(cpool_bytes != NULL, "cpool_bytes pointer must not be NULL"); aoqi@0: return; aoqi@0: } aoqi@0: cpool()->copy_cpool_bytes(cpool_size(), _symmap, cpool_bytes); aoqi@0: } aoqi@0: }; aoqi@0: aoqi@0: aoqi@0: class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter { aoqi@0: private: aoqi@0: size_t _buffer_size; aoqi@0: u1* _buffer; aoqi@0: u1* _buffer_ptr; aoqi@0: Thread* _thread; aoqi@0: aoqi@0: enum { aoqi@0: // initial size should be power of two aoqi@0: initial_buffer_size = 1024 aoqi@0: }; aoqi@0: aoqi@0: inline Thread* thread() { return _thread; } aoqi@0: aoqi@0: void write_class_file_format(); aoqi@0: void write_field_infos(); aoqi@0: void write_method_infos(); aoqi@0: void write_method_info(methodHandle method); aoqi@0: void write_code_attribute(methodHandle method); aoqi@0: void write_exceptions_attribute(ConstMethod* const_method); aoqi@0: void write_synthetic_attribute(); aoqi@0: void write_class_attributes(); aoqi@0: void write_source_file_attribute(); aoqi@0: void write_source_debug_extension_attribute(); aoqi@0: u2 line_number_table_entries(methodHandle method); aoqi@0: void write_line_number_table_attribute(methodHandle method, u2 num_entries); aoqi@0: void write_local_variable_table_attribute(methodHandle method, u2 num_entries); aoqi@0: void write_local_variable_type_table_attribute(methodHandle method, u2 num_entries); aoqi@0: void write_stackmap_table_attribute(methodHandle method, int stackmap_table_len); aoqi@0: u2 inner_classes_attribute_length(); aoqi@0: void write_inner_classes_attribute(int length); aoqi@0: void write_signature_attribute(u2 generic_signaure_index); aoqi@0: void write_attribute_name_index(const char* name); aoqi@0: void write_annotations_attribute(const char* attr_name, AnnotationArray* annos); aoqi@0: void write_bootstrapmethod_attribute(); aoqi@0: aoqi@0: address writeable_address(size_t size); aoqi@0: void write_u1(u1 x); aoqi@0: void write_u2(u2 x); aoqi@0: void write_u4(u4 x); aoqi@0: void write_u8(u8 x); aoqi@0: aoqi@0: public: aoqi@0: // Calls to this constructor must be proceeded by a ResourceMark aoqi@0: // and a HandleMark aoqi@0: JvmtiClassFileReconstituter(instanceKlassHandle ikh) : aoqi@0: JvmtiConstantPoolReconstituter(ikh) { aoqi@0: _buffer_size = initial_buffer_size; aoqi@0: _buffer = _buffer_ptr = NEW_RESOURCE_ARRAY(u1, _buffer_size); aoqi@0: _thread = Thread::current(); aoqi@0: write_class_file_format(); aoqi@0: }; aoqi@0: aoqi@0: size_t class_file_size() { return _buffer_ptr - _buffer; } aoqi@0: aoqi@0: u1* class_file_bytes() { return _buffer; } aoqi@0: aoqi@0: static void copy_bytecodes(methodHandle method, unsigned char* bytecodes); aoqi@0: }; aoqi@0: aoqi@0: #endif // SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP