Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
| 2 | |
| 3 | #ifndef ART_SRC_OBJECT_H_ |
| 4 | #define ART_SRC_OBJECT_H_ |
| 5 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 6 | #include "constants.h" |
| 7 | #include "casts.h" |
Shih-wei Liao | 2fb9753 | 2011-08-11 16:17:23 -0700 | [diff] [blame] | 8 | #include "dex_file.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 9 | #include "globals.h" |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 10 | #include "heap.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 11 | #include "logging.h" |
| 12 | #include "macros.h" |
| 13 | #include "offsets.h" |
| 14 | #include "stringpiece.h" |
| 15 | #include "monitor.h" |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 16 | |
| 17 | namespace art { |
| 18 | |
| 19 | class Array; |
| 20 | class Class; |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 21 | class DexCache; |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 22 | class Field; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 23 | class InterfaceEntry; |
| 24 | class Monitor; |
| 25 | class Method; |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 26 | class Object; |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 27 | class String; |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 28 | template<class T> class ObjectArray; |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 29 | template<class T> class PrimitiveArray; |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 30 | typedef PrimitiveArray<uint16_t> CharArray; |
| 31 | typedef PrimitiveArray<uint32_t> IntArray; |
| 32 | typedef PrimitiveArray<uint64_t> LongArray; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 33 | |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 34 | union JValue { |
| 35 | uint8_t z; |
| 36 | int8_t b; |
| 37 | uint16_t c; |
| 38 | int16_t s; |
| 39 | int32_t i; |
| 40 | int64_t j; |
| 41 | float f; |
| 42 | double d; |
| 43 | Object* l; |
| 44 | }; |
| 45 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 46 | static const uint32_t kAccPublic = 0x0001; // class, field, method, ic |
| 47 | static const uint32_t kAccPrivate = 0x0002; // field, method, ic |
| 48 | static const uint32_t kAccProtected = 0x0004; // field, method, ic |
| 49 | static const uint32_t kAccStatic = 0x0008; // field, method, ic |
| 50 | static const uint32_t kAccFinal = 0x0010; // class, field, method, ic |
| 51 | static const uint32_t kAccSynchronized = 0x0020; // method (only allowed on natives) |
| 52 | static const uint32_t kAccSuper = 0x0020; // class (not used in Dalvik) |
| 53 | static const uint32_t kAccVolatile = 0x0040; // field |
| 54 | static const uint32_t kAccBridge = 0x0040; // method (1.5) |
| 55 | static const uint32_t kAccTransient = 0x0080; // field |
| 56 | static const uint32_t kAccVarargs = 0x0080; // method (1.5) |
| 57 | static const uint32_t kAccNative = 0x0100; // method |
| 58 | static const uint32_t kAccInterface = 0x0200; // class, ic |
| 59 | static const uint32_t kAccAbstract = 0x0400; // class, method, ic |
| 60 | static const uint32_t kAccStrict = 0x0800; // method |
| 61 | static const uint32_t kAccSynthetic = 0x1000; // field, method, ic |
| 62 | static const uint32_t kAccAnnotation = 0x2000; // class, ic (1.5) |
| 63 | static const uint32_t kAccEnum = 0x4000; // class, field, ic (1.5) |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 64 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 65 | static const uint32_t kAccMiranda = 0x8000; // method |
| 66 | |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 67 | static const uint32_t kAccJavaFlagsMask = 0xffff; // bits set from Java sources (low 16) |
| 68 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 69 | static const uint32_t kAccConstructor = 0x00010000; // method (Dalvik only) |
| 70 | static const uint32_t kAccDeclaredSynchronized = 0x00020000; // method (Dalvik only) |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 71 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 72 | /* |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 73 | * Definitions for packing refOffsets in Class. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 74 | */ |
| 75 | /* |
| 76 | * A magic value for refOffsets. Ignore the bits and walk the super |
| 77 | * chain when this is the value. |
| 78 | * [This is an unlikely "natural" value, since it would be 30 non-ref instance |
| 79 | * fields followed by 2 ref instance fields.] |
| 80 | */ |
| 81 | #define CLASS_WALK_SUPER ((unsigned int)(3)) |
| 82 | #define CLASS_SMALLEST_OFFSET (sizeof(struct Object)) |
| 83 | #define CLASS_BITS_PER_WORD (sizeof(unsigned long int) * 8) |
| 84 | #define CLASS_OFFSET_ALIGNMENT 4 |
| 85 | #define CLASS_HIGH_BIT ((unsigned int)1 << (CLASS_BITS_PER_WORD - 1)) |
| 86 | /* |
| 87 | * Given an offset, return the bit number which would encode that offset. |
| 88 | * Local use only. |
| 89 | */ |
| 90 | #define _CLASS_BIT_NUMBER_FROM_OFFSET(byteOffset) \ |
| 91 | (((unsigned int)(byteOffset) - CLASS_SMALLEST_OFFSET) / \ |
| 92 | CLASS_OFFSET_ALIGNMENT) |
| 93 | /* |
| 94 | * Is the given offset too large to be encoded? |
| 95 | */ |
| 96 | #define CLASS_CAN_ENCODE_OFFSET(byteOffset) \ |
| 97 | (_CLASS_BIT_NUMBER_FROM_OFFSET(byteOffset) < CLASS_BITS_PER_WORD) |
| 98 | /* |
| 99 | * Return a single bit, encoding the offset. |
| 100 | * Undefined if the offset is too large, as defined above. |
| 101 | */ |
| 102 | #define CLASS_BIT_FROM_OFFSET(byteOffset) \ |
| 103 | (CLASS_HIGH_BIT >> _CLASS_BIT_NUMBER_FROM_OFFSET(byteOffset)) |
| 104 | /* |
| 105 | * Return an offset, given a bit number as returned from CLZ. |
| 106 | */ |
| 107 | #define CLASS_OFFSET_FROM_CLZ(rshift) \ |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 108 | ((static_cast<int>(rshift) * CLASS_OFFSET_ALIGNMENT) + CLASS_SMALLEST_OFFSET) |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 109 | |
| 110 | |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 111 | class Object { |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 112 | public: |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 113 | static bool InstanceOf(const Object* object, const Class* klass) { |
| 114 | if (object == NULL) { |
| 115 | return false; |
| 116 | } |
| 117 | return object->InstanceOf(klass); |
| 118 | } |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 119 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 120 | Class* GetClass() const { |
| 121 | return klass_; |
| 122 | } |
| 123 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 124 | bool InstanceOf(const Class* klass) const; |
| 125 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 126 | void MonitorEnter() { |
| 127 | monitor_->Enter(); |
| 128 | } |
| 129 | |
| 130 | void MonitorExit() { |
| 131 | monitor_->Exit(); |
| 132 | } |
| 133 | |
| 134 | void Notify() { |
| 135 | monitor_->Notify(); |
| 136 | } |
| 137 | |
| 138 | void NotifyAll() { |
| 139 | monitor_->NotifyAll(); |
| 140 | } |
| 141 | |
| 142 | void Wait() { |
| 143 | monitor_->Wait(); |
| 144 | } |
| 145 | |
| 146 | void Wait(int64_t timeout) { |
| 147 | monitor_->Wait(timeout); |
| 148 | } |
| 149 | |
| 150 | void Wait(int64_t timeout, int32_t nanos) { |
| 151 | monitor_->Wait(timeout, nanos); |
| 152 | } |
| 153 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 154 | const Object* GetFieldObject(size_t field_offset) const { |
| 155 | const byte* raw_addr = reinterpret_cast<const byte*>(this) + field_offset; |
| 156 | return *reinterpret_cast<Object* const*>(raw_addr); |
| 157 | } |
| 158 | |
| 159 | Object* GetFieldObject(size_t field_offset) { |
| 160 | return const_cast<Object*>(GetFieldObject(field_offset)); |
| 161 | } |
| 162 | |
| 163 | void SetFieldObject(size_t offset, Object* new_value) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 164 | byte* raw_addr = reinterpret_cast<byte*>(this) + offset; |
| 165 | *reinterpret_cast<Object**>(raw_addr) = new_value; |
| 166 | // TODO: write barrier |
| 167 | } |
| 168 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 169 | bool IsClass() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 170 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 171 | return true; |
| 172 | } |
| 173 | |
| 174 | Class* AsClass() { |
| 175 | return down_cast<Class*>(this); |
| 176 | } |
| 177 | |
| 178 | const Class* AsClass() const { |
| 179 | return down_cast<const Class*>(this); |
| 180 | } |
| 181 | |
| 182 | bool IsObjectArray() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 183 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 184 | return true; |
| 185 | } |
| 186 | |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 187 | const ObjectArray<Object>* AsObjectArray() const { |
| 188 | return down_cast<const ObjectArray<Object>*>(this); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | bool IsReference() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 192 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 193 | return true; |
| 194 | } |
| 195 | |
| 196 | bool IsWeakReference() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 197 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 198 | return true; |
| 199 | } |
| 200 | |
| 201 | bool IsSoftReference() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 202 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 203 | return true; |
| 204 | } |
| 205 | |
| 206 | bool IsFinalizerReference() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 207 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 208 | return true; |
| 209 | } |
| 210 | |
| 211 | bool IsPhantomReference() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 212 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 213 | return true; |
| 214 | } |
| 215 | |
| 216 | bool IsArray() const { |
Elliott Hughes | 53b6131 | 2011-08-12 18:28:20 -0700 | [diff] [blame] | 217 | UNIMPLEMENTED(FATAL); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 218 | return true; |
| 219 | } |
| 220 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 221 | public: |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 222 | Class* klass_; |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 223 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 224 | Monitor* monitor_; |
| 225 | |
| 226 | private: |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 227 | DISALLOW_IMPLICIT_CONSTRUCTORS(Object); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 228 | }; |
| 229 | |
| 230 | class ObjectLock { |
| 231 | public: |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 232 | explicit ObjectLock(Object* object) : obj_(object) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 233 | CHECK(object != NULL); |
| 234 | obj_->MonitorEnter(); |
| 235 | } |
| 236 | |
| 237 | ~ObjectLock() { |
| 238 | obj_->MonitorExit(); |
| 239 | } |
| 240 | |
| 241 | void Wait(int64_t millis = 0) { |
| 242 | return obj_->Wait(millis); |
| 243 | } |
| 244 | |
| 245 | void Notify() { |
| 246 | obj_->Notify(); |
| 247 | } |
| 248 | |
| 249 | void NotifyAll() { |
| 250 | obj_->NotifyAll(); |
| 251 | } |
| 252 | |
| 253 | private: |
| 254 | Object* obj_; |
| 255 | DISALLOW_COPY_AND_ASSIGN(ObjectLock); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 256 | }; |
| 257 | |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 258 | class AccessibleObject : public Object { |
| 259 | private: |
| 260 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
| 261 | uint32_t java_flag_; |
| 262 | }; |
| 263 | |
| 264 | class Field : public AccessibleObject { |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 265 | public: |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 266 | Class* GetDeclaringClass() const { |
| 267 | return declaring_class_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Jesse Wilson | 1415074 | 2011-07-29 19:04:44 -0400 | [diff] [blame] | 270 | const String* GetName() const { |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 271 | return name_; |
| 272 | } |
| 273 | |
| 274 | bool IsStatic() const { |
| 275 | return (access_flags_ & kAccStatic) != 0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | char GetType() const { // TODO: return type |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 279 | return GetDescriptor()[0]; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 280 | } |
| 281 | |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 282 | const StringPiece& GetDescriptor() const { |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 283 | DCHECK_NE(0, descriptor_.size()); |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 284 | return descriptor_; |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 285 | } |
| 286 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 287 | uint32_t GetOffset() const { |
| 288 | return offset_; |
| 289 | } |
| 290 | |
| 291 | void SetOffset(size_t num_bytes) { |
| 292 | offset_ = num_bytes; |
| 293 | } |
| 294 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 295 | // static field access |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 296 | bool GetBoolean(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 297 | void SetBoolean(bool z); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 298 | int8_t GetByte(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 299 | void SetByte(int8_t b); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 300 | uint16_t GetChar(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 301 | void SetChar(uint16_t c); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 302 | uint16_t GetShort(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 303 | void SetShort(uint16_t s); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 304 | int32_t GetInt(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 305 | void SetInt(int32_t i); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 306 | int64_t GetLong(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 307 | void SetLong(int64_t j); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 308 | float GetFloat(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 309 | void SetFloat(float f); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 310 | double GetDouble(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 311 | void SetDouble(double d); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 312 | Object* GetObject(); |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 313 | const Object* GetObject() const; |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 314 | void SetObject(Object* l); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 315 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 316 | public: // TODO: private |
| 317 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
| 318 | // The class in which this field is declared. |
| 319 | Class* declaring_class_; |
| 320 | Object* generic_type_; |
| 321 | uint32_t generic_types_are_initialized_; |
| 322 | String* name_; |
| 323 | uint32_t offset_; |
| 324 | Class* type_; |
| 325 | |
| 326 | // e.g. "I", "[C", "Landroid/os/Debug;" |
| 327 | StringPiece descriptor_; |
| 328 | |
| 329 | uint32_t access_flags_; |
| 330 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 331 | private: |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 332 | DISALLOW_IMPLICIT_CONSTRUCTORS(Field); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 333 | }; |
| 334 | |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 335 | class Method : public AccessibleObject { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 336 | public: |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 337 | // An function that invokes a method with an array of its arguments. |
| 338 | typedef void InvokeStub(Method* method, |
| 339 | Object* obj, |
| 340 | Thread* thread, |
| 341 | byte* args, |
| 342 | JValue* result); |
| 343 | |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 344 | // Returns the method name, e.g. "<init>" or "eatLunch" |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 345 | const String* GetName() const { |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 346 | return name_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 347 | } |
| 348 | |
Carl Shapiro | 419ec7b | 2011-08-03 14:48:33 -0700 | [diff] [blame] | 349 | const String* GetDescriptor() const { |
| 350 | return descriptor_; |
| 351 | } |
| 352 | |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 353 | Class* GetDeclaringClass() const { |
| 354 | return declaring_class_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 355 | } |
| 356 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 357 | static MemberOffset ClassOffset() { |
| 358 | return MemberOffset(OFFSETOF_MEMBER(Method, klass_)); |
| 359 | } |
| 360 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 361 | // Returns true if the method is declared public. |
| 362 | bool IsPublic() const { |
| 363 | return (access_flags_ & kAccPublic) != 0; |
| 364 | } |
| 365 | |
| 366 | // Returns true if the method is declared private. |
| 367 | bool IsPrivate() const { |
| 368 | return (access_flags_ & kAccPrivate) != 0; |
| 369 | } |
| 370 | |
| 371 | // Returns true if the method is declared static. |
| 372 | bool IsStatic() const { |
| 373 | return (access_flags_ & kAccStatic) != 0; |
| 374 | } |
| 375 | |
| 376 | // Returns true if the method is declared synchronized. |
| 377 | bool IsSynchronized() const { |
| 378 | uint32_t synchonized = kAccSynchronized | kAccDeclaredSynchronized; |
| 379 | return (access_flags_ & synchonized) != 0; |
| 380 | } |
| 381 | |
| 382 | // Returns true if the method is declared final. |
| 383 | bool IsFinal() const { |
| 384 | return (access_flags_ & kAccFinal) != 0; |
| 385 | } |
| 386 | |
| 387 | // Returns true if the method is declared native. |
| 388 | bool IsNative() const { |
| 389 | return (access_flags_ & kAccNative) != 0; |
| 390 | } |
| 391 | |
| 392 | // Returns true if the method is declared abstract. |
| 393 | bool IsAbstract() const { |
| 394 | return (access_flags_ & kAccAbstract) != 0; |
| 395 | } |
| 396 | |
| 397 | bool IsSynthetic() const { |
| 398 | return (access_flags_ & kAccSynthetic) != 0; |
| 399 | } |
| 400 | |
| 401 | // Number of argument registers required by the prototype. |
| 402 | uint32_t NumArgRegisters(); |
| 403 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 404 | // Number of argument bytes required for densely packing the |
| 405 | // arguments into an array of arguments. |
| 406 | size_t NumArgArrayBytes(); |
| 407 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 408 | public: // TODO: private |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 409 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 410 | // the class we are a part of |
| 411 | Class* declaring_class_; |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 412 | ObjectArray<Class>* java_exception_types_; |
| 413 | Object* java_formal_type_parameters_; |
| 414 | Object* java_generic_exception_types_; |
| 415 | Object* java_generic_parameter_types_; |
| 416 | Object* java_generic_return_type_; |
| 417 | Class* java_return_type_; |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 418 | String* name_; |
Jesse Wilson | 46cdd4b | 2011-07-28 17:40:48 -0400 | [diff] [blame] | 419 | ObjectArray<Class>* java_parameter_types_; |
| 420 | uint32_t java_generic_types_are_initialized_; |
| 421 | uint32_t java_slot_; |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 422 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 423 | const StringPiece& GetShorty() const { |
| 424 | return shorty_; |
| 425 | } |
| 426 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 427 | bool IsReturnAReference() const { |
| 428 | return (shorty_[0] == 'L') || (shorty_[0] == '['); |
| 429 | } |
| 430 | |
| 431 | bool IsReturnAFloatOrDouble() const { |
| 432 | return (shorty_[0] == 'F') || (shorty_[0] == 'D'); |
| 433 | } |
| 434 | |
| 435 | bool IsReturnAFloat() const { |
| 436 | return shorty_[0] == 'F'; |
| 437 | } |
| 438 | |
| 439 | bool IsReturnADouble() const { |
| 440 | return shorty_[0] == 'D'; |
| 441 | } |
| 442 | |
| 443 | bool IsReturnALong() const { |
| 444 | return shorty_[0] == 'J'; |
| 445 | } |
| 446 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 447 | bool IsReturnVoid() const { |
| 448 | return shorty_[0] == 'V'; |
| 449 | } |
| 450 | |
Shih-wei Liao | 5381cf9 | 2011-07-27 00:28:04 -0700 | [diff] [blame] | 451 | // "Args" may refer to any of the 3 levels of "Args." |
| 452 | // To avoid confusion, our code will denote which "Args" clearly: |
| 453 | // 1. UserArgs: Args that a user see. |
| 454 | // 2. Args: Logical JVM-level Args. E.g., the first in Args will be the |
| 455 | // receiver. |
| 456 | // 3. CConvArgs: Calling Convention Args, which is physical-level Args. |
| 457 | // E.g., the first in Args is Method* for both static and non-static |
| 458 | // methods. And CConvArgs doesn't deal with the receiver because |
| 459 | // receiver is hardwired in an implicit register, so CConvArgs doesn't |
| 460 | // need to deal with it. |
| 461 | // |
| 462 | // The number of Args that should be supplied to this method |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 463 | size_t NumArgs() const { |
Shih-wei Liao | 5381cf9 | 2011-07-27 00:28:04 -0700 | [diff] [blame] | 464 | // "1 +" because the first in Args is the receiver. |
| 465 | // "- 1" because we don't count the return type. |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 466 | return (IsStatic() ? 0 : 1) + shorty_.length() - 1; |
| 467 | } |
| 468 | |
| 469 | // The number of reference arguments to this method including implicit this |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 470 | // pointer. |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 471 | size_t NumReferenceArgs() const; |
| 472 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 473 | // The number of long or double arguments. |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 474 | size_t NumLongOrDoubleArgs() const; |
| 475 | |
| 476 | // The number of reference arguments to this method before the given |
| 477 | // parameter index |
| 478 | size_t NumReferenceArgsBefore(unsigned int param) const; |
| 479 | |
| 480 | // Is the given method parameter a reference? |
| 481 | bool IsParamAReference(unsigned int param) const; |
| 482 | |
| 483 | // Is the given method parameter a long or double? |
| 484 | bool IsParamALongOrDouble(unsigned int param) const; |
| 485 | |
Ian Rogers | df20fe0 | 2011-07-20 20:34:16 -0700 | [diff] [blame] | 486 | // Size in bytes of the given parameter |
| 487 | size_t ParamSize(unsigned int param) const; |
| 488 | |
| 489 | // Size in bytes of the return value |
| 490 | size_t ReturnSize() const; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 491 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 492 | const void* GetCode() const { |
| 493 | return code_; |
| 494 | } |
| 495 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 496 | void SetCode(const void* code) { |
| 497 | code_ = code; |
| 498 | } |
| 499 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 500 | static size_t GetCodeOffset() { |
| 501 | return OFFSETOF_MEMBER(Method, code_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | void RegisterNative(const void* native_method) { |
| 505 | native_method_ = native_method; |
| 506 | } |
| 507 | |
| 508 | static MemberOffset NativeMethodOffset() { |
| 509 | return MemberOffset(OFFSETOF_MEMBER(Method, native_method_)); |
| 510 | } |
| 511 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 512 | InvokeStub* GetInvokeStub() const { |
| 513 | return invoke_stub_; |
| 514 | } |
| 515 | |
| 516 | void SetInvokeStub(const InvokeStub* invoke_stub) { |
| 517 | invoke_stub_ = invoke_stub; |
| 518 | } |
| 519 | |
| 520 | static size_t GetInvokeStubOffset() { |
| 521 | return OFFSETOF_MEMBER(Method, invoke_stub_); |
| 522 | } |
| 523 | |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 524 | bool HasSameNameAndDescriptor(const Method* that) const; |
| 525 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 526 | public: // TODO: private/const |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 527 | // access flags; low 16 bits are defined by spec (could be uint16_t?) |
| 528 | uint32_t access_flags_; |
| 529 | |
| 530 | // For concrete virtual methods, this is the offset of the method |
| 531 | // in "vtable". |
| 532 | // |
| 533 | // For abstract methods in an interface class, this is the offset |
| 534 | // of the method in "iftable[n]->methodIndexArray". |
| 535 | uint16_t method_index_; |
| 536 | |
| 537 | // Method bounds; not needed for an abstract method. |
| 538 | // |
| 539 | // For a native method, we compute the size of the argument list, and |
| 540 | // set "insSize" and "registerSize" equal to it. |
| 541 | uint16_t num_registers_; // ins + locals |
| 542 | uint16_t num_outs_; |
| 543 | uint16_t num_ins_; |
| 544 | |
Carl Shapiro | 419ec7b | 2011-08-03 14:48:33 -0700 | [diff] [blame] | 545 | // The method descriptor. This represents the parameters a method |
| 546 | // takes and value it returns. This string is a list of the type |
| 547 | // descriptors for the parameters enclosed in parenthesis followed |
| 548 | // by the return type descriptor. For example, for the method |
| 549 | // |
| 550 | // Object mymethod(int i, double d, Thread t) |
| 551 | // |
| 552 | // the method descriptor would be |
| 553 | // |
| 554 | // (IDLjava/lang/Thread;)Ljava/lang/Object; |
| 555 | String* descriptor_; |
| 556 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 557 | // Method prototype descriptor string (return and argument types). |
| 558 | uint32_t proto_idx_; |
| 559 | |
Shih-wei Liao | 2fb9753 | 2011-08-11 16:17:23 -0700 | [diff] [blame] | 560 | // Offset to the CodeItem. |
| 561 | uint32_t code_off_; |
| 562 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 563 | // The short-form method descriptor string. |
| 564 | StringPiece shorty_; |
| 565 | |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 566 | private: |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 567 | // Compiled code associated with this method |
| 568 | const void* code_; |
| 569 | |
| 570 | // Any native method registered with this method |
| 571 | const void* native_method_; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 572 | |
Carl Shapiro | 9b9ba28 | 2011-08-14 15:30:39 -0700 | [diff] [blame^] | 573 | // Native invocation stub entry point. |
| 574 | const InvokeStub* invoke_stub_; |
| 575 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 576 | DISALLOW_IMPLICIT_CONSTRUCTORS(Method); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 577 | }; |
| 578 | |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 579 | class Array : public Object { |
| 580 | public: |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 581 | static Array* Alloc(Class* array_class, |
| 582 | size_t component_count, |
| 583 | size_t component_size) { |
| 584 | size_t size = sizeof(Array) + component_count * component_size; |
| 585 | Array* array = down_cast<Array*>(Heap::AllocObject(array_class, size)); |
| 586 | if (array != NULL) { |
| 587 | array->SetLength(component_count); |
| 588 | } |
| 589 | return array; |
| 590 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 591 | |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 592 | uint32_t GetLength() const { |
| 593 | return length_; |
| 594 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 595 | |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 596 | void SetLength(uint32_t length) { |
| 597 | length_ = length; |
| 598 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 599 | |
| 600 | private: |
| 601 | // The number of array elements. |
| 602 | uint32_t length_; |
Jesse Wilson | df4189c | 2011-08-09 17:10:28 -0400 | [diff] [blame] | 603 | // Padding to ensure the first member defined by a subclass begins on a 8-byte boundary |
| 604 | int32_t padding_; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 605 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 606 | DISALLOW_IMPLICIT_CONSTRUCTORS(Array); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 607 | }; |
| 608 | |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 609 | template<class T> |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 610 | class ObjectArray : public Array { |
| 611 | public: |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 612 | static ObjectArray<T>* Alloc(Class* object_array_class, |
| 613 | size_t length) { |
| 614 | return down_cast<ObjectArray<T>*>(Array::Alloc(object_array_class, |
| 615 | length, |
| 616 | sizeof(uint32_t))); |
| 617 | } |
| 618 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 619 | T* const * GetData() const { |
| 620 | return reinterpret_cast<T* const *>(&elements_); |
| 621 | } |
Jesse Wilson | df4189c | 2011-08-09 17:10:28 -0400 | [diff] [blame] | 622 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 623 | T** GetData() { |
| 624 | return reinterpret_cast<T**>(&elements_); |
| 625 | } |
Jesse Wilson | df4189c | 2011-08-09 17:10:28 -0400 | [diff] [blame] | 626 | |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 627 | T* Get(uint32_t i) const { |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 628 | CHECK_LT(i, GetLength()); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 629 | return GetData()[i]; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 630 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 631 | |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 632 | void Set(uint32_t i, T* object) { |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 633 | CHECK_LT(i, GetLength()); |
Jesse Wilson | df4189c | 2011-08-09 17:10:28 -0400 | [diff] [blame] | 634 | GetData()[i] = object; // TODO: write barrier |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 635 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 636 | |
| 637 | static void Copy(ObjectArray<T>* src, int src_pos, |
| 638 | ObjectArray<T>* dst, int dst_pos, |
| 639 | size_t length) { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 640 | for (size_t i = 0; i < length; i++) { |
| 641 | dst->Set(dst_pos + i, src->Get(src_pos + i)); |
| 642 | } |
| 643 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 644 | |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 645 | ObjectArray<T>* CopyOf(size_t new_length) { |
| 646 | ObjectArray<T>* new_array = Alloc(klass_, new_length); |
| 647 | Copy(this, 0, new_array, 0, std::min(GetLength(), new_length)); |
| 648 | return new_array; |
| 649 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 650 | |
| 651 | private: |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 652 | // Location of first element. |
| 653 | T* elements_[0]; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 654 | |
| 655 | DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectArray); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 656 | }; |
| 657 | |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 658 | // ClassLoader objects. |
| 659 | class ClassLoader : public Object { |
| 660 | public: |
| 661 | std::vector<const DexFile*>& GetClassPath() { |
| 662 | return class_path_; |
| 663 | } |
| 664 | void SetClassPath(std::vector<const DexFile*>& class_path) { |
| 665 | DCHECK_EQ(0U, class_path_.size()); |
| 666 | class_path_ = class_path; |
| 667 | } |
| 668 | |
| 669 | private: |
| 670 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
| 671 | Object* packages_; |
| 672 | ClassLoader* parent_; |
| 673 | |
| 674 | // TODO remove once we can create a real PathClassLoader |
| 675 | std::vector<const DexFile*> class_path_; |
| 676 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 677 | DISALLOW_IMPLICIT_CONSTRUCTORS(ClassLoader); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 678 | }; |
| 679 | |
| 680 | class BaseDexClassLoader : public ClassLoader { |
| 681 | private: |
| 682 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
| 683 | String* original_path_; |
| 684 | Object* path_list_; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 685 | DISALLOW_IMPLICIT_CONSTRUCTORS(BaseDexClassLoader); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 686 | }; |
| 687 | |
| 688 | class PathClassLoader : public BaseDexClassLoader { |
| 689 | private: |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 690 | DISALLOW_IMPLICIT_CONSTRUCTORS(PathClassLoader); |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 691 | }; |
| 692 | |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 693 | // Class objects. |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 694 | class Class : public Object { |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 695 | public: |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 696 | |
| 697 | // Class Status |
| 698 | // |
| 699 | // kStatusNotReady: If a Class cannot be found in the class table by |
| 700 | // FindClass, it allocates an new one with AllocClass in the |
| 701 | // kStatusNotReady and calls LoadClass. Note if it does find a |
| 702 | // class, it may not be kStatusResolved and it will try to push it |
| 703 | // forward toward kStatusResolved. |
| 704 | // |
| 705 | // kStatusIdx: LoadClass populates with Class with information from |
| 706 | // the DexFile, moving the status to kStatusIdx, indicating that the |
| 707 | // Class values in super_class_ and interfaces_ have not been |
| 708 | // populated based on super_class_idx_ and interfaces_idx_. The new |
| 709 | // Class can then be inserted into the classes table. |
| 710 | // |
| 711 | // kStatusLoaded: After taking a lock on Class, the ClassLinker will |
| 712 | // attempt to move a kStatusIdx class forward to kStatusLoaded by |
| 713 | // using ResolveClass to initialize the super_class_ and interfaces_. |
| 714 | // |
| 715 | // kStatusResolved: Still holding the lock on Class, the ClassLinker |
| 716 | // will use LinkClass to link all members, creating Field and Method |
| 717 | // objects, setting up the vtable, etc. On success, the class is |
| 718 | // marked kStatusResolved. |
| 719 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 720 | enum Status { |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 721 | kStatusError = -1, |
| 722 | kStatusNotReady = 0, |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 723 | kStatusIdx = 1, // loaded, DEX idx in super_class_idx_ and interfaces_idx_ |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 724 | kStatusLoaded = 2, // DEX idx values resolved |
| 725 | kStatusResolved = 3, // part of linking |
| 726 | kStatusVerifying = 4, // in the process of being verified |
| 727 | kStatusVerified = 5, // logically part of linking; done pre-init |
| 728 | kStatusInitializing = 6, // class init in progress |
| 729 | kStatusInitialized = 7, // ready to go |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 730 | }; |
| 731 | |
| 732 | enum PrimitiveType { |
| 733 | kPrimNot = -1 |
| 734 | }; |
| 735 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 736 | Object* NewInstance() { |
| 737 | return Heap::AllocObject(this, this->object_size_); |
| 738 | } |
| 739 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 740 | Class* GetSuperClass() const { |
| 741 | return super_class_; |
| 742 | } |
| 743 | |
| 744 | uint32_t GetSuperClassIdx() const { |
| 745 | return super_class_idx_; |
| 746 | } |
| 747 | |
| 748 | bool HasSuperClass() const { |
| 749 | return super_class_ != NULL; |
| 750 | } |
| 751 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 752 | bool IsAssignableFrom(const Class* klass) const { |
| 753 | DCHECK(klass != NULL); |
| 754 | if (this == klass) { |
| 755 | return true; |
| 756 | } |
| 757 | if (IsInterface()) { |
| 758 | return klass->Implements(this); |
| 759 | } |
| 760 | if (klass->IsArray()) { |
| 761 | return IsAssignableFromArray(klass); |
| 762 | } |
| 763 | return klass->IsSubClass(this); |
| 764 | } |
| 765 | |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 766 | ClassLoader* GetClassLoader() const { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 767 | return class_loader_; |
| 768 | } |
| 769 | |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 770 | DexCache* GetDexCache() const { |
| 771 | return dex_cache_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | Class* GetComponentType() const { |
| 775 | return component_type_; |
| 776 | } |
| 777 | |
| 778 | const StringPiece& GetDescriptor() const { |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 779 | DCHECK_NE(0, descriptor_.size()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 780 | return descriptor_; |
| 781 | } |
| 782 | |
| 783 | Status GetStatus() const { |
| 784 | return status_; |
| 785 | } |
| 786 | |
| 787 | void SetStatus(Status new_status) { |
| 788 | // TODO: validate transition |
| 789 | status_ = new_status; |
| 790 | } |
| 791 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 792 | // Returns true if the class has failed to link. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 793 | bool IsErroneous() const { |
| 794 | return GetStatus() == kStatusError; |
| 795 | } |
| 796 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 797 | // Returns true if the class has been verified. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 798 | bool IsVerified() const { |
| 799 | return GetStatus() >= kStatusVerified; |
| 800 | } |
| 801 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 802 | // Returns true if the class has been linked. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 803 | bool IsLinked() const { |
| 804 | return GetStatus() >= kStatusResolved; |
| 805 | } |
| 806 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 807 | bool IsLoaded() const { |
| 808 | return GetStatus() >= kStatusLoaded; |
| 809 | } |
| 810 | |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 811 | // Returns true if this class is in the same packages as that class. |
| 812 | bool IsInSamePackage(const Class* that) const; |
| 813 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 814 | static bool IsInSamePackage(const StringPiece& descriptor1, |
| 815 | const StringPiece& descriptor2); |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 816 | |
| 817 | // Returns true if this class represents an array class. |
| 818 | bool IsArray() const { |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 819 | return GetDescriptor()[0] == '['; // TODO: avoid parsing the descriptor |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 820 | } |
| 821 | |
| 822 | // Returns true if the class is an interface. |
| 823 | bool IsInterface() const { |
| 824 | return (access_flags_ & kAccInterface) != 0; |
| 825 | } |
| 826 | |
| 827 | // Returns true if the class is declared public. |
| 828 | bool IsPublic() const { |
| 829 | return (access_flags_ & kAccPublic) != 0; |
| 830 | } |
| 831 | |
| 832 | // Returns true if the class is declared final. |
| 833 | bool IsFinal() const { |
| 834 | return (access_flags_ & kAccFinal) != 0; |
| 835 | } |
| 836 | |
| 837 | // Returns true if the class is abstract. |
| 838 | bool IsAbstract() const { |
| 839 | return (access_flags_ & kAccAbstract) != 0; |
| 840 | } |
| 841 | |
| 842 | // Returns true if the class is an annotation. |
| 843 | bool IsAnnotation() const { |
| 844 | return (access_flags_ & kAccAnnotation) != 0; |
| 845 | } |
| 846 | |
| 847 | // Returns true if the class is a primitive type. |
| 848 | bool IsPrimitive() const { |
| 849 | return primitive_type_ != kPrimNot; |
| 850 | } |
| 851 | |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 852 | // Returns true if the class is synthetic. |
| 853 | bool IsSynthetic() const { |
| 854 | return (access_flags_ & kAccSynthetic) != 0; |
| 855 | } |
| 856 | |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 857 | // Returns true if this class can access that class. |
| 858 | bool CanAccess(const Class* that) const { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 859 | return that->IsPublic() || this->IsInSamePackage(that); |
Carl Shapiro | 894d0fa | 2011-06-30 14:48:49 -0700 | [diff] [blame] | 860 | } |
| 861 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 862 | // Returns the number of static, private, and constructor methods. |
| 863 | size_t NumDirectMethods() const { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 864 | return (direct_methods_ != NULL) ? direct_methods_->GetLength() : 0; |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 865 | } |
| 866 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 867 | Method* GetDirectMethod(uint32_t i) const { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 868 | DCHECK_NE(NumDirectMethods(), 0U); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 869 | return direct_methods_->Get(i); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 870 | } |
| 871 | |
| 872 | void SetDirectMethod(uint32_t i, Method* f) { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 873 | DCHECK_NE(NumDirectMethods(), 0U); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 874 | direct_methods_->Set(i, f); |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 875 | } |
| 876 | |
Carl Shapiro | 419ec7b | 2011-08-03 14:48:33 -0700 | [diff] [blame] | 877 | Method* FindDeclaredDirectMethod(const StringPiece& name, |
| 878 | const StringPiece& descriptor); |
| 879 | |
| 880 | Method* FindDirectMethod(const StringPiece& name, |
| 881 | const StringPiece& descriptor); |
| 882 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 883 | // Returns the number of non-inherited virtual methods. |
| 884 | size_t NumVirtualMethods() const { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 885 | return (virtual_methods_ != NULL) ? virtual_methods_->GetLength() : 0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 886 | } |
| 887 | |
| 888 | Method* GetVirtualMethod(uint32_t i) const { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 889 | DCHECK_NE(NumVirtualMethods(), 0U); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 890 | return virtual_methods_->Get(i); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 891 | } |
| 892 | |
| 893 | void SetVirtualMethod(uint32_t i, Method* f) { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 894 | DCHECK_NE(NumVirtualMethods(), 0U); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 895 | virtual_methods_->Set(i, f); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 896 | } |
| 897 | |
Carl Shapiro | 419ec7b | 2011-08-03 14:48:33 -0700 | [diff] [blame] | 898 | Method* FindDeclaredVirtualMethod(const StringPiece& name, |
| 899 | const StringPiece& descriptor); |
| 900 | |
| 901 | Method* FindVirtualMethod(const StringPiece& name, |
| 902 | const StringPiece& descriptor); |
| 903 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 904 | size_t NumInstanceFields() const { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 905 | return (ifields_ != NULL) ? ifields_->GetLength() : 0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 906 | } |
| 907 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 908 | // Returns the number of instance fields containing reference types. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 909 | size_t NumReferenceInstanceFields() const { |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 910 | return num_reference_instance_fields_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 911 | } |
| 912 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 913 | Field* GetInstanceField(uint32_t i) const { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 914 | DCHECK_NE(NumInstanceFields(), 0U); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 915 | return ifields_->Get(i); |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 916 | } |
| 917 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 918 | void SetInstanceField(uint32_t i, Field* f) { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 919 | DCHECK_NE(NumInstanceFields(), 0U); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 920 | ifields_->Set(i, f); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | size_t NumStaticFields() const { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 924 | return (sfields_ != NULL) ? sfields_->GetLength() : 0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 925 | } |
| 926 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 927 | Field* GetStaticField(uint32_t i) const { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 928 | DCHECK_NE(NumStaticFields(), 0U); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 929 | return sfields_->Get(i); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 930 | } |
| 931 | |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 932 | void SetStaticField(uint32_t i, Field* f) { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 933 | DCHECK_NE(NumStaticFields(), 0U); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 934 | sfields_->Set(i, f); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 935 | } |
| 936 | |
| 937 | uint32_t GetReferenceOffsets() const { |
| 938 | return reference_offsets_; |
| 939 | } |
| 940 | |
| 941 | void SetReferenceOffsets(uint32_t new_reference_offsets) { |
| 942 | reference_offsets_ = new_reference_offsets; |
| 943 | } |
| 944 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 945 | size_t NumInterfaces() const { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 946 | return (interfaces_ != NULL) ? interfaces_->GetLength() : 0; |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 947 | } |
| 948 | |
| 949 | Class* GetInterface(uint32_t i) const { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 950 | DCHECK_NE(NumInterfaces(), 0U); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 951 | return interfaces_->Get(i); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 952 | } |
| 953 | |
| 954 | void SetInterface(uint32_t i, Class* f) { // TODO: uint16_t |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame] | 955 | DCHECK_NE(NumInterfaces(), 0U); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 956 | interfaces_->Set(i, f); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 957 | } |
| 958 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 959 | void SetVerifyErrorClass(Class* klass) { |
| 960 | // Note SetFieldObject is used rather than verify_error_class_ directly for the barrier |
| 961 | size_t field_offset = OFFSETOF_MEMBER(Class, verify_error_class_); |
| 962 | klass->SetFieldObject(field_offset, klass); |
| 963 | } |
| 964 | |
| 965 | private: |
| 966 | bool Implements(const Class* klass) const; |
| 967 | bool IsArrayAssignableFromArray(const Class* klass) const; |
| 968 | bool IsAssignableFromArray(const Class* klass) const; |
| 969 | bool IsSubClass(const Class* klass) const; |
| 970 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 971 | public: // TODO: private |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 972 | // leave space for instance data; we could access fields directly if |
| 973 | // we freeze the definition of java/lang/Class |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 974 | #define CLASS_FIELD_SLOTS 1 |
| 975 | // Class.#0 name |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 976 | uint32_t instance_data_[CLASS_FIELD_SLOTS]; |
| 977 | #undef CLASS_FIELD_SLOTS |
| 978 | |
| 979 | // UTF-8 descriptor for the class from constant pool |
| 980 | // ("Ljava/lang/Class;"), or on heap if generated ("[C") |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 981 | StringPiece descriptor_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 982 | |
| 983 | // Proxy classes have their descriptor allocated on the native heap. |
| 984 | // When this field is non-NULL it must be explicitly freed. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 985 | std::string* descriptor_alloc_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 986 | |
| 987 | // access flags; low 16 bits are defined by VM spec |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 988 | uint32_t access_flags_; // TODO: make an instance field? |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 989 | |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 990 | // DexCache of resolved constant pool entries |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 991 | // (will be NULL for VM-generated, e.g. arrays and primitive classes) |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 992 | DexCache* dex_cache_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 993 | |
| 994 | // state of class initialization |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 995 | Status status_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 996 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 997 | // If class verify fails, we must return same error on subsequent tries. |
| 998 | // Update with SetVerifyErrorClass to ensure a write barrier is used. |
| 999 | const Class* verify_error_class_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1000 | |
| 1001 | // threadId, used to check for recursive <clinit> invocation |
| 1002 | uint32_t clinit_thread_id_; |
| 1003 | |
| 1004 | // Total object size; used when allocating storage on gc heap. (For |
| 1005 | // interfaces and abstract classes this will be zero.) |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1006 | size_t object_size_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1007 | |
| 1008 | // For array classes, the class object for base element, for |
| 1009 | // instanceof/checkcast (for String[][][], this will be String). |
| 1010 | // Otherwise, NULL. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1011 | Class* component_type_; // TODO: make an instance field |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1012 | |
| 1013 | // For array classes, the number of array dimensions, e.g. int[][] |
| 1014 | // is 2. Otherwise 0. |
| 1015 | int32_t array_rank_; |
| 1016 | |
| 1017 | // primitive type index, or PRIM_NOT (-1); set for generated prim classes |
| 1018 | PrimitiveType primitive_type_; |
| 1019 | |
| 1020 | // The superclass, or NULL if this is java.lang.Object or a |
| 1021 | // primitive type. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1022 | Class* super_class_; // TODO: make an instance field |
| 1023 | uint32_t super_class_idx_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1024 | |
| 1025 | // defining class loader, or NULL for the "bootstrap" system loader |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1026 | ClassLoader* class_loader_; // TODO: make an instance field |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1027 | |
| 1028 | // initiating class loader list |
| 1029 | // NOTE: for classes with low serialNumber, these are unused, and the |
| 1030 | // values are kept in a table in gDvm. |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1031 | // InitiatingLoaderList initiating_loader_list_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1032 | |
| 1033 | // array of interfaces this class implements directly |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1034 | ObjectArray<Class>* interfaces_; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1035 | uint32_t* interfaces_idx_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1036 | |
| 1037 | // static, private, and <init> methods |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1038 | ObjectArray<Method>* direct_methods_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1039 | |
| 1040 | // virtual methods defined in this class; invoked through vtable |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1041 | ObjectArray<Method>* virtual_methods_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1042 | |
| 1043 | // Virtual method table (vtable), for use by "invoke-virtual". The |
| 1044 | // vtable from the superclass is copied in, and virtual methods from |
| 1045 | // our class either replace those from the super or are appended. |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1046 | ObjectArray<Method>* vtable_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1047 | |
| 1048 | // Interface table (iftable), one entry per interface supported by |
| 1049 | // this class. That means one entry for each interface we support |
| 1050 | // directly, indirectly via superclass, or indirectly via |
| 1051 | // superinterface. This will be null if neither we nor our |
| 1052 | // superclass implement any interfaces. |
| 1053 | // |
| 1054 | // Why we need this: given "class Foo implements Face", declare |
| 1055 | // "Face faceObj = new Foo()". Invoke faceObj.blah(), where "blah" |
| 1056 | // is part of the Face interface. We can't easily use a single |
| 1057 | // vtable. |
| 1058 | // |
| 1059 | // For every interface a concrete class implements, we create a list |
| 1060 | // of virtualMethod indices for the methods in the interface. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1061 | size_t iftable_count_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1062 | InterfaceEntry* iftable_; |
| 1063 | |
| 1064 | // The interface vtable indices for iftable get stored here. By |
| 1065 | // placing them all in a single pool for each class that implements |
| 1066 | // interfaces, we decrease the number of allocations. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1067 | size_t ifvi_pool_count_; |
| 1068 | uint32_t* ifvi_pool_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1069 | |
| 1070 | // instance fields |
| 1071 | // |
| 1072 | // These describe the layout of the contents of a |
| 1073 | // DataObject-compatible Object. Note that only the fields directly |
| 1074 | // declared by this class are listed in ifields; fields declared by |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1075 | // a superclass are listed in the superclass's Class.ifields. |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1076 | // |
| 1077 | // All instance fields that refer to objects are guaranteed to be at |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1078 | // the beginning of the field list. num_reference_instance_fields_ |
| 1079 | // specifies the number of reference fields. |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 1080 | ObjectArray<Field>* ifields_; |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 1081 | |
| 1082 | // number of fields that are object refs |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 1083 | size_t num_reference_instance_fields_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1084 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1085 | // Bitmap of offsets of ifields. |
| 1086 | uint32_t reference_offsets_; |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1087 | |
| 1088 | // source file name, if known. Otherwise, NULL. |
| 1089 | const char* source_file_; |
| 1090 | |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 1091 | // Static fields |
Jesse Wilson | 35baaab | 2011-08-10 16:18:03 -0400 | [diff] [blame] | 1092 | ObjectArray<Field>* sfields_; |
Jesse Wilson | 7833bd2 | 2011-08-09 18:31:44 -0400 | [diff] [blame] | 1093 | |
| 1094 | // static field storage |
| 1095 | // |
| 1096 | // Each static field is stored in one of three arrays: |
| 1097 | // o references are stored in static_references_ |
| 1098 | // o doubles and longs are stored in static_64bit_primitives_ |
| 1099 | // o everything else is in static_32bit_primitives_ |
| 1100 | // Static fields select their array using their type and their index using the |
| 1101 | // Field->slot_ member. Storing static fields in arrays avoids the need for a |
| 1102 | // special case in the GC. |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1103 | ObjectArray<Object>* static_references_; |
| 1104 | IntArray* static_32bit_primitives_; |
| 1105 | LongArray* static_64bit_primitives_; |
| 1106 | |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1107 | private: |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1108 | DISALLOW_IMPLICIT_CONSTRUCTORS(Class); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1109 | }; |
Elliott Hughes | 1f359b0 | 2011-07-17 14:27:17 -0700 | [diff] [blame] | 1110 | std::ostream& operator<<(std::ostream& os, const Class::Status& rhs); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1111 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 1112 | inline bool Object::InstanceOf(const Class* klass) const { |
Jesse Wilson | 1415074 | 2011-07-29 19:04:44 -0400 | [diff] [blame] | 1113 | DCHECK(klass != NULL); |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 1114 | DCHECK(klass_ != NULL); |
| 1115 | return klass->IsAssignableFrom(klass_); |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1116 | } |
| 1117 | |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 1118 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1119 | class DataObject : public Object { |
| 1120 | public: |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 1121 | uint32_t fields_[0]; |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1122 | private: |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1123 | DISALLOW_IMPLICIT_CONSTRUCTORS(DataObject); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1124 | }; |
| 1125 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1126 | template<class T> |
| 1127 | class PrimitiveArray : public Array { |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1128 | public: |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1129 | static PrimitiveArray<T>* Alloc(Class* element_class, size_t length) { |
| 1130 | return down_cast<PrimitiveArray<T>*>(Array::Alloc(element_class, |
| 1131 | length, |
| 1132 | sizeof(T))); |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1133 | } |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1134 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1135 | const T* GetData() const { |
| 1136 | return reinterpret_cast<const T*>(&elements_); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1137 | } |
| 1138 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1139 | T* GetData() { |
| 1140 | return reinterpret_cast<T*>(&elements_); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1141 | } |
| 1142 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1143 | T Get(T i) const { |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1144 | CHECK_LT(i, GetLength()); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1145 | return GetData()[i]; |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1146 | } |
| 1147 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1148 | void Set(uint32_t i, T value) { |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1149 | CHECK_LT(i, GetLength()); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1150 | GetData()[i] = value; |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1151 | } |
| 1152 | |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1153 | private: |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1154 | // Location of first element. |
| 1155 | T elements_[0]; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1156 | |
| 1157 | DISALLOW_IMPLICIT_CONSTRUCTORS(PrimitiveArray); |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1158 | }; |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1159 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1160 | class String : public Object { |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1161 | public: |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1162 | const CharArray* GetCharArray() const { |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1163 | DCHECK(array_ != NULL); |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1164 | return array_; |
| 1165 | } |
| 1166 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1167 | uint32_t GetHashCode() const { |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1168 | return hash_code_; |
| 1169 | } |
| 1170 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1171 | uint32_t GetOffset() const { |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1172 | return offset_; |
| 1173 | } |
| 1174 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1175 | uint32_t GetLength() const { |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1176 | return count_; |
| 1177 | } |
| 1178 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1179 | uint16_t CharAt(uint32_t index) const { |
| 1180 | DCHECK_LE(index, GetLength()); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1181 | return GetCharArray()->Get(index + GetOffset()); |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1182 | } |
| 1183 | |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1184 | static String* AllocFromUtf16(int32_t utf16_length, |
| 1185 | uint16_t* utf16_data_in, |
| 1186 | int32_t hash_code) { |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1187 | String* string = Alloc(GetJavaLangString(), |
| 1188 | GetCharArrayClass(), |
| 1189 | utf16_length); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1190 | // TODO use 16-bit wide memset variant |
| 1191 | for (int i = 0; i < utf16_length; i++ ) { |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1192 | string->array_->Set(i, utf16_data_in[i]); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1193 | } |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1194 | string->ComputeHashCode(); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1195 | return string; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | static String* AllocFromModifiedUtf8(Class* java_lang_String, |
| 1199 | Class* char_array, |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1200 | int32_t utf16_length, |
| 1201 | const char* utf8_data_in) { |
| 1202 | String* string = Alloc(java_lang_String, char_array, utf16_length); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1203 | uint16_t* utf16_data_out = string->array_->GetData(); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1204 | ConvertModifiedUtf8ToUtf16(utf16_data_out, utf8_data_in); |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1205 | string->ComputeHashCode(); |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1206 | return string; |
| 1207 | } |
| 1208 | |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1209 | // Creates a String of the given ASCII characters. It is an error to call this |
| 1210 | // using non-ASCII characters as this function assumes one char per byte. |
| 1211 | static String* AllocFromAscii(const char* ascii_data_in) { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1212 | return AllocFromModifiedUtf8(GetJavaLangString(), |
| 1213 | GetCharArrayClass(), |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1214 | strlen(ascii_data_in), |
| 1215 | ascii_data_in); |
| 1216 | } |
| 1217 | |
Jesse Wilson | 8989d99 | 2011-08-02 13:39:42 -0700 | [diff] [blame] | 1218 | static String* AllocFromModifiedUtf8(int32_t utf16_length, |
| 1219 | const char* utf8_data_in) { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1220 | return AllocFromModifiedUtf8(GetJavaLangString(), GetCharArrayClass(), |
| 1221 | utf16_length, utf8_data_in); |
Jesse Wilson | 8989d99 | 2011-08-02 13:39:42 -0700 | [diff] [blame] | 1222 | } |
| 1223 | |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1224 | static void InitClasses(Class* java_lang_String, Class* char_array); |
| 1225 | |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1226 | static String* Alloc(Class* java_lang_String, |
| 1227 | Class* char_array, |
| 1228 | int32_t utf16_length) { |
Brian Carlstrom | f7ed11a | 2011-08-09 17:55:51 -0700 | [diff] [blame] | 1229 | String* string = down_cast<String*>(java_lang_String->NewInstance()); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1230 | CharArray* array = CharArray::Alloc(char_array, utf16_length); |
| 1231 | string->array_ = array; |
| 1232 | string->count_ = utf16_length; |
| 1233 | return string; |
| 1234 | } |
| 1235 | |
| 1236 | // Convert Modified UTF-8 to UTF-16 |
| 1237 | // http://en.wikipedia.org/wiki/UTF-8#Modified_UTF-8 |
| 1238 | static void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_data_out, const char* utf8_data_in) { |
| 1239 | while (*utf8_data_in != '\0') { |
| 1240 | *utf16_data_out++ = GetUtf16FromUtf8(&utf8_data_in); |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | // Retrieve the next UTF-16 character from a UTF-8 string. |
| 1245 | // |
| 1246 | // Advances "*pUtf8Ptr" to the start of the next character. |
| 1247 | // |
| 1248 | // WARNING: If a string is corrupted by dropping a '\0' in the middle |
| 1249 | // of a 3-byte sequence, you can end up overrunning the buffer with |
| 1250 | // reads (and possibly with the writes if the length was computed and |
| 1251 | // cached before the damage). For performance reasons, this function |
| 1252 | // assumes that the string being parsed is known to be valid (e.g., by |
| 1253 | // already being verified). Most strings we process here are coming |
| 1254 | // out of dex files or other internal translations, so the only real |
| 1255 | // risk comes from the JNI NewStringUTF call. |
| 1256 | static uint16_t GetUtf16FromUtf8(const char** utf8_data_in) { |
| 1257 | uint8_t one = *(*utf8_data_in)++; |
| 1258 | if ((one & 0x80) == 0) { |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1259 | // one-byte encoding |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1260 | return one; |
| 1261 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1262 | // two- or three-byte encoding |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1263 | uint8_t two = *(*utf8_data_in)++; |
| 1264 | if ((one & 0x20) == 0) { |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1265 | // two-byte encoding |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1266 | return ((one & 0x1f) << 6) | |
| 1267 | (two & 0x3f); |
| 1268 | } |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1269 | // three-byte encoding |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1270 | uint8_t three = *(*utf8_data_in)++; |
| 1271 | return ((one & 0x0f) << 12) | |
| 1272 | ((two & 0x3f) << 6) | |
| 1273 | (three & 0x3f); |
| 1274 | } |
| 1275 | |
Brian Carlstrom | 74eb46a | 2011-08-02 20:10:14 -0700 | [diff] [blame] | 1276 | // Like "strlen", but for strings encoded with "modified" UTF-8. |
| 1277 | // |
| 1278 | // The value returned is the number of characters, which may or may not |
| 1279 | // be the same as the number of bytes. |
| 1280 | // |
| 1281 | // (If this needs optimizing, try: mask against 0xa0, shift right 5, |
| 1282 | // get increment {1-3} from table of 8 values.) |
| 1283 | static size_t ModifiedUtf8Len(const char* utf8) { |
| 1284 | size_t len = 0; |
| 1285 | int ic; |
| 1286 | while ((ic = *utf8++) != '\0') { |
| 1287 | len++; |
| 1288 | if ((ic & 0x80) == 0) { |
| 1289 | // one-byte encoding |
| 1290 | continue; |
| 1291 | } |
| 1292 | // two- or three-byte encoding |
| 1293 | utf8++; |
| 1294 | if ((ic & 0x20) == 0) { |
| 1295 | // two-byte encoding |
| 1296 | continue; |
| 1297 | } |
| 1298 | // three-byte encoding |
| 1299 | utf8++; |
| 1300 | } |
| 1301 | return len; |
| 1302 | } |
| 1303 | |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1304 | // The java/lang/String.computeHashCode() algorithm |
Jesse Wilson | cbe9fc0 | 2011-07-29 18:59:50 -0400 | [diff] [blame] | 1305 | static int32_t ComputeUtf16Hash(const uint16_t* string_data, size_t string_length) { |
| 1306 | int32_t hash = 0; |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1307 | while (string_length--) { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1308 | hash = hash * 31 + *string_data++; |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1309 | } |
| 1310 | return hash; |
| 1311 | } |
| 1312 | |
Jesse Wilson | fd687c5 | 2011-08-04 19:27:35 -0700 | [diff] [blame] | 1313 | void ComputeHashCode() { |
| 1314 | hash_code_ = ComputeUtf16Hash(array_->GetData(), count_); |
| 1315 | } |
| 1316 | |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1317 | bool Equals(const char* modified_utf8) const { |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1318 | for (uint32_t i = 0; i < GetLength(); ++i) { |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1319 | uint16_t ch = GetUtf16FromUtf8(&modified_utf8); |
| 1320 | if (ch == '\0' || ch != CharAt(i)) { |
Jesse Wilson | cbe9fc0 | 2011-07-29 18:59:50 -0400 | [diff] [blame] | 1321 | return false; |
| 1322 | } |
| 1323 | } |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1324 | return *modified_utf8 == '\0'; |
Jesse Wilson | cbe9fc0 | 2011-07-29 18:59:50 -0400 | [diff] [blame] | 1325 | } |
| 1326 | |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1327 | bool Equals(const StringPiece& modified_utf8) const { |
| 1328 | // TODO: do not assume C-string representation. |
| 1329 | return Equals(modified_utf8.data()); |
| 1330 | } |
| 1331 | |
| 1332 | bool Equals(const String* that) const { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1333 | // TODO short circuit on hash_code_ |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1334 | if (this->GetLength() != that->GetLength()) { |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1335 | return false; |
| 1336 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1337 | for (uint32_t i = 0; i < that->GetLength(); ++i) { |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1338 | if (this->CharAt(i) != that->CharAt(i)) { |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1339 | return false; |
| 1340 | } |
| 1341 | } |
| 1342 | return true; |
| 1343 | } |
| 1344 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1345 | bool Equals(const uint16_t* that_chars, uint32_t that_offset, uint32_t that_length) const { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1346 | if (this->GetLength() != that_length) { |
| 1347 | return false; |
| 1348 | } |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1349 | for (uint32_t i = 0; i < that_length; ++i) { |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1350 | if (this->CharAt(i) != that_chars[that_offset + i]) { |
| 1351 | return false; |
| 1352 | } |
| 1353 | } |
| 1354 | return true; |
| 1355 | } |
| 1356 | |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1357 | private: |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1358 | // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". |
| 1359 | CharArray* array_; |
| 1360 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1361 | uint32_t hash_code_; |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1362 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1363 | uint32_t offset_; |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1364 | |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1365 | uint32_t count_; |
Brian Carlstrom | 7e93b50 | 2011-08-04 14:16:22 -0700 | [diff] [blame] | 1366 | |
| 1367 | static Class* GetJavaLangString() { |
| 1368 | DCHECK(java_lang_String_ != NULL); |
| 1369 | return java_lang_String_; |
| 1370 | } |
| 1371 | static Class* GetCharArrayClass() { |
| 1372 | DCHECK(char_array_ != NULL); |
| 1373 | return char_array_; |
| 1374 | } |
Jesse Wilson | f7e85a5 | 2011-08-01 18:45:58 -0700 | [diff] [blame] | 1375 | |
| 1376 | static Class* java_lang_String_; |
| 1377 | static Class* char_array_; |
Carl Shapiro | 8860c0e | 2011-08-04 17:36:16 -0700 | [diff] [blame] | 1378 | |
| 1379 | DISALLOW_IMPLICIT_CONSTRUCTORS(String); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1380 | }; |
| 1381 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1382 | class InterfaceEntry { |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1383 | public: |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1384 | InterfaceEntry() : klass_(NULL), method_index_array_(NULL) { |
| 1385 | } |
| 1386 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1387 | Class* GetClass() const { |
| 1388 | return klass_; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1389 | } |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 1390 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1391 | void SetClass(Class* klass) { |
| 1392 | klass_ = klass; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1393 | } |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 1394 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1395 | private: |
| 1396 | // Points to the interface class. |
Carl Shapiro | 3ee755d | 2011-06-28 12:11:04 -0700 | [diff] [blame] | 1397 | Class* klass_; |
| 1398 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1399 | public: // TODO: private |
| 1400 | // Index into array of vtable offsets. This points into the |
| 1401 | // ifviPool, which holds the vtables for all interfaces declared by |
| 1402 | // this class. |
| 1403 | uint32_t* method_index_array_; |
Carl Shapiro | f88c952 | 2011-08-06 15:47:38 -0700 | [diff] [blame] | 1404 | |
| 1405 | private: |
| 1406 | DISALLOW_COPY_AND_ASSIGN(InterfaceEntry); |
Carl Shapiro | 1fb8620 | 2011-06-27 17:43:13 -0700 | [diff] [blame] | 1407 | }; |
| 1408 | |
| 1409 | } // namespace art |
| 1410 | |
| 1411 | #endif // ART_SRC_OBJECT_H_ |