1 /* 2 * Copyright (c) 2016, 2017, 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 #ifndef SHARE_VM_AOT_AOTCODEHEAP_HPP 25 #define SHARE_VM_AOT_AOTCODEHEAP_HPP 26 27 #include "aot/aotCompiledMethod.hpp" 28 #include "classfile/symbolTable.hpp" 29 #include "oops/metadata.hpp" 30 #include "oops/method.hpp" 31 32 enum CodeState { 33 not_set = 0, // _aot fields is not set yet 34 in_use = 1, // _aot field is set to corresponding AOTCompiledMethod 35 invalid = 2 // AOT code is invalidated because dependencies failed 36 }; 37 38 typedef struct { 39 AOTCompiledMethod* _aot; 40 CodeState _state; // State change cases: not_set->in_use, not_set->invalid 41 } CodeToAMethod; 42 43 class ClassLoaderData; 44 45 class AOTClass { 46 public: 47 ClassLoaderData* _classloader; 48 }; 49 50 typedef struct { 51 int _name_offset; 52 int _code_offset; 53 int _meta_offset; 54 int _metadata_got_offset; 55 int _metadata_got_size; 56 int _code_id; 57 } AOTMethodOffsets; 58 59 typedef struct { 60 const char* _name; 61 address _code; 62 aot_metadata* _meta; 63 jlong* _state_adr; 64 address _metadata_table; 65 int _metadata_size; 66 } AOTMethodData; 67 68 typedef struct { 69 int _got_index; 70 int _class_id; 71 int _compiled_methods_offset; 72 int _dependent_methods_offset; 73 uint64_t _fingerprint; 74 } AOTKlassData; 75 76 typedef struct { 77 int _version; 78 int _class_count; 79 int _method_count; 80 int _metaspace_got_size; 81 int _metadata_got_size; 82 int _oop_got_size; 83 int _jvm_version_offset; 84 85 enum { 86 AOT_SHARED_VERSION = 1 87 }; 88 } AOTHeader; 89 90 typedef struct { 91 enum { CONFIG_SIZE = 7 * jintSize + 11 }; 92 // 7 int values 93 int _config_size; 94 int _narrowOopShift; 95 int _narrowKlassShift; 96 int _contendedPaddingWidth; 97 int _fieldsAllocationStyle; 98 int _objectAlignment; 99 int _codeSegmentSize; 100 // byte[11] array map to boolean values here 101 bool _debug_VM; 102 bool _useCompressedOops; 103 bool _useCompressedClassPointers; 104 bool _compactFields; 105 bool _useG1GC; 106 bool _useTLAB; 107 bool _useBiasedLocking; 108 bool _tieredAOT; 109 bool _enableContended; 110 bool _restrictContended; 111 bool _omitAssertions; 112 } AOTConfiguration; 113 114 class AOTLib : public CHeapObj<mtCode> { 115 static bool _narrow_oop_shift_initialized; 116 static int _narrow_oop_shift; 117 static int _narrow_klass_shift; 118 119 bool _valid; 120 void* _dl_handle; 121 const int _dso_id; 122 const char* _name; 123 // VM configuration during AOT compilation 124 AOTConfiguration* _config; 125 AOTHeader* _header; 126 127 void handle_config_error(const char* format, ...) ATTRIBUTE_PRINTF(2, 3); 128 public: 129 AOTLib(void* handle, const char* name, int dso_id); 130 virtual ~AOTLib(); 131 static int narrow_oop_shift() { return _narrow_oop_shift; } 132 static int narrow_klass_shift() { return _narrow_klass_shift; } 133 static bool narrow_oop_shift_initialized() { return _narrow_oop_shift_initialized; } 134 135 bool is_valid() const { 136 return _valid; 137 } 138 const char* name() const { 139 return _name; 140 } 141 void* dl_handle() const { 142 return _dl_handle; 143 } 144 int id() const { 145 return _dso_id; 146 } 147 AOTHeader* header() const { 148 return _header; 149 } 150 AOTConfiguration* config() const { 151 return _config; 152 } 153 void verify_config(); 154 void verify_flag(bool aot_flag, bool flag, const char* name); 155 void verify_flag(int aot_flag, int flag, const char* name); 156 157 address load_symbol(const char *name); 158 }; 159 160 161 class AOTCodeHeap : public CodeHeap { 162 AOTLib* _lib; 163 int _aot_id; 164 165 int _class_count; 166 int _method_count; 167 AOTClass* _classes; 168 CodeToAMethod* _code_to_aot; 169 170 address _code_space; 171 address _code_segments; 172 jlong* _method_state; 173 174 175 // Collect metaspace info: names -> address in .got section 176 const char* _metaspace_names; 177 address _method_metadata; 178 179 address _methods_offsets; 180 address _klasses_offsets; 181 address _dependencies; 182 183 Metadata** _metaspace_got; 184 Metadata** _metadata_got; 185 oop* _oop_got; 186 187 int _metaspace_got_size; 188 int _metadata_got_size; 189 int _oop_got_size; 190 191 // Collect stubs info 192 int* _stubs_offsets; 193 194 bool _lib_symbols_initialized; 195 196 void adjust_boundaries(AOTCompiledMethod* method) { 197 char* low = (char*)method->code_begin(); 198 if (low < low_boundary()) { 199 _memory.set_low_boundary(low); 200 } 201 char* high = (char *)method->code_end(); 202 if (high > high_boundary()) { 203 _memory.set_high_boundary(high); 204 _memory.set_high(high); 205 } 206 assert(_method_count > 0, "methods count should be set already"); 207 } 208 209 void register_stubs(); 210 211 void link_shared_runtime_symbols(); 212 void link_stub_routines_symbols(); 213 void link_os_symbols(); 214 void link_graal_runtime_symbols(); 215 216 void link_global_lib_symbols(); 217 void link_primitive_array_klasses(); 218 void publish_aot(const methodHandle& mh, AOTMethodData* method_data, int code_id); 219 220 221 AOTCompiledMethod* next_in_use_at(int index) const; 222 223 // Find klass in SystemDictionary for aot metadata. 224 static Klass* lookup_klass(const char* name, int len, const Method* method, Thread* THREAD); 225 public: 226 AOTCodeHeap(AOTLib* lib); 227 virtual ~AOTCodeHeap(); 228 229 AOTCompiledMethod* find_aot(address p) const; 230 231 virtual void* find_start(void* p) const; 232 virtual CodeBlob* find_blob_unsafe(void* start) const; 233 virtual void* first() const; 234 virtual void* next(void *p) const; 235 236 AOTKlassData* find_klass(InstanceKlass* ik); 237 bool load_klass_data(InstanceKlass* ik, Thread* thread); 238 Klass* get_klass_from_got(const char* klass_name, int klass_len, const Method* method); 239 void sweep_dependent_methods(AOTKlassData* klass_data); 240 bool is_dependent_method(Klass* dependee, AOTCompiledMethod* aot); 241 242 const char* get_name_at(int offset) { 243 return _metaspace_names + offset; 244 } 245 246 void oops_do(OopClosure* f); 247 void metadata_do(void f(Metadata*)); 248 void got_metadata_do(void f(Metadata*)); 249 250 #ifdef ASSERT 251 bool got_contains(Metadata **p) { 252 return (p >= &_metadata_got[0] && p < &_metadata_got[_metadata_got_size]) || 253 (p >= &_metaspace_got[0] && p < &_metaspace_got[_metaspace_got_size]); 254 } 255 #endif 256 257 int dso_id() const { return _lib->id(); } 258 int aot_id() const { return _aot_id; } 259 260 int method_count() { return _method_count; } 261 262 AOTCompiledMethod* get_code_desc_at_index(int index) { 263 if (index < _method_count && _code_to_aot[index]._state == in_use) { 264 AOTCompiledMethod* m = _code_to_aot[index]._aot; 265 assert(m != NULL, "AOT method should be set"); 266 if (!m->is_runtime_stub()) { 267 return m; 268 } 269 } 270 return NULL; 271 } 272 273 static Method* find_method(Klass* klass, Thread* thread, const char* method_name); 274 275 void cleanup_inline_caches(); 276 277 DEBUG_ONLY( int verify_icholder_relocations(); ) 278 279 void flush_evol_dependents_on(InstanceKlass* dependee); 280 281 void alive_methods_do(void f(CompiledMethod* nm)); 282 283 #ifndef PRODUCT 284 static int klasses_seen; 285 static int aot_klasses_found; 286 static int aot_klasses_fp_miss; 287 static int aot_klasses_cl_miss; 288 static int aot_methods_found; 289 290 static void print_statistics(); 291 #endif 292 }; 293 294 #endif // SHARE_VM_AOT_AOTCODEHEAP_HPP