1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/prims/jvmtiClassFileReconstituter.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,156 @@
1.4 +/*
1.5 + * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP
1.29 +#define SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP
1.30 +
1.31 +#include "jvmtifiles/jvmtiEnv.hpp"
1.32 +
1.33 +
1.34 +class JvmtiConstantPoolReconstituter : public StackObj {
1.35 + private:
1.36 + int _cpool_size;
1.37 + SymbolHashMap* _symmap;
1.38 + SymbolHashMap* _classmap;
1.39 + constantPoolHandle _cpool;
1.40 + instanceKlassHandle _ikh;
1.41 + jvmtiError _err;
1.42 +
1.43 + protected:
1.44 + instanceKlassHandle ikh() { return _ikh; };
1.45 + constantPoolHandle cpool() { return _cpool; };
1.46 +
1.47 + u2 symbol_to_cpool_index(Symbol* sym) {
1.48 + return _symmap->symbol_to_value(sym);
1.49 + }
1.50 +
1.51 + u2 class_symbol_to_cpool_index(Symbol* sym) {
1.52 + return _classmap->symbol_to_value(sym);
1.53 + }
1.54 +
1.55 + public:
1.56 + // Calls to this constructor must be proceeded by a ResourceMark
1.57 + // and a HandleMark
1.58 + JvmtiConstantPoolReconstituter(instanceKlassHandle ikh){
1.59 + set_error(JVMTI_ERROR_NONE);
1.60 + _ikh = ikh;
1.61 + _cpool = constantPoolHandle(Thread::current(), ikh->constants());
1.62 + _symmap = new SymbolHashMap();
1.63 + _classmap = new SymbolHashMap();
1.64 + _cpool_size = _cpool->hash_entries_to(_symmap, _classmap);
1.65 + if (_cpool_size == 0) {
1.66 + set_error(JVMTI_ERROR_OUT_OF_MEMORY);
1.67 + } else if (_cpool_size < 0) {
1.68 + set_error(JVMTI_ERROR_INTERNAL);
1.69 + }
1.70 + }
1.71 +
1.72 + ~JvmtiConstantPoolReconstituter() {
1.73 + if (_symmap != NULL) {
1.74 + os::free(_symmap, mtClass);
1.75 + _symmap = NULL;
1.76 + }
1.77 + if (_classmap != NULL) {
1.78 + os::free(_classmap, mtClass);
1.79 + _classmap = NULL;
1.80 + }
1.81 + }
1.82 +
1.83 +
1.84 + void set_error(jvmtiError err) { _err = err; }
1.85 + jvmtiError get_error() { return _err; }
1.86 +
1.87 + int cpool_size() { return _cpool_size; }
1.88 +
1.89 + void copy_cpool_bytes(unsigned char *cpool_bytes) {
1.90 + if (cpool_bytes == NULL) {
1.91 + assert(cpool_bytes != NULL, "cpool_bytes pointer must not be NULL");
1.92 + return;
1.93 + }
1.94 + cpool()->copy_cpool_bytes(cpool_size(), _symmap, cpool_bytes);
1.95 + }
1.96 +};
1.97 +
1.98 +
1.99 +class JvmtiClassFileReconstituter : public JvmtiConstantPoolReconstituter {
1.100 + private:
1.101 + size_t _buffer_size;
1.102 + u1* _buffer;
1.103 + u1* _buffer_ptr;
1.104 + Thread* _thread;
1.105 +
1.106 + enum {
1.107 + // initial size should be power of two
1.108 + initial_buffer_size = 1024
1.109 + };
1.110 +
1.111 + inline Thread* thread() { return _thread; }
1.112 +
1.113 + void write_class_file_format();
1.114 + void write_field_infos();
1.115 + void write_method_infos();
1.116 + void write_method_info(methodHandle method);
1.117 + void write_code_attribute(methodHandle method);
1.118 + void write_exceptions_attribute(ConstMethod* const_method);
1.119 + void write_synthetic_attribute();
1.120 + void write_class_attributes();
1.121 + void write_source_file_attribute();
1.122 + void write_source_debug_extension_attribute();
1.123 + u2 line_number_table_entries(methodHandle method);
1.124 + void write_line_number_table_attribute(methodHandle method, u2 num_entries);
1.125 + void write_local_variable_table_attribute(methodHandle method, u2 num_entries);
1.126 + void write_local_variable_type_table_attribute(methodHandle method, u2 num_entries);
1.127 + void write_stackmap_table_attribute(methodHandle method, int stackmap_table_len);
1.128 + u2 inner_classes_attribute_length();
1.129 + void write_inner_classes_attribute(int length);
1.130 + void write_signature_attribute(u2 generic_signaure_index);
1.131 + void write_attribute_name_index(const char* name);
1.132 + void write_annotations_attribute(const char* attr_name, AnnotationArray* annos);
1.133 + void write_bootstrapmethod_attribute();
1.134 +
1.135 + address writeable_address(size_t size);
1.136 + void write_u1(u1 x);
1.137 + void write_u2(u2 x);
1.138 + void write_u4(u4 x);
1.139 + void write_u8(u8 x);
1.140 +
1.141 + public:
1.142 + // Calls to this constructor must be proceeded by a ResourceMark
1.143 + // and a HandleMark
1.144 + JvmtiClassFileReconstituter(instanceKlassHandle ikh) :
1.145 + JvmtiConstantPoolReconstituter(ikh) {
1.146 + _buffer_size = initial_buffer_size;
1.147 + _buffer = _buffer_ptr = NEW_RESOURCE_ARRAY(u1, _buffer_size);
1.148 + _thread = Thread::current();
1.149 + write_class_file_format();
1.150 + };
1.151 +
1.152 + size_t class_file_size() { return _buffer_ptr - _buffer; }
1.153 +
1.154 + u1* class_file_bytes() { return _buffer; }
1.155 +
1.156 + static void copy_bytecodes(methodHandle method, unsigned char* bytecodes);
1.157 +};
1.158 +
1.159 +#endif // SHARE_VM_PRIMS_JVMTICLASSFILERECONSTITUTER_HPP
