Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 2 | |
| 3 | #ifndef ART_SRC_THREAD_H_ |
| 4 | #define ART_SRC_THREAD_H_ |
| 5 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 6 | #include <pthread.h> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 7 | #include <list> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 8 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 9 | #include "globals.h" |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 10 | #include "jni_internal.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 11 | #include "logging.h" |
| 12 | #include "macros.h" |
Brian Carlstrom | b765be0 | 2011-08-17 23:54:10 -0700 | [diff] [blame] | 13 | #include "mem_map.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 14 | #include "offsets.h" |
| 15 | #include "runtime.h" |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 16 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 17 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 18 | namespace art { |
| 19 | |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 20 | class Array; |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 21 | class Class; |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 22 | class ClassLoader; |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 23 | class JNIEnvExt; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 24 | class Method; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 25 | class Object; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 26 | class Runtime; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 27 | class Thread; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 28 | class ThreadList; |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 29 | class Throwable; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 30 | class StackTraceElement; |
| 31 | template<class T> class ObjectArray; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 32 | |
| 33 | class Mutex { |
| 34 | public: |
| 35 | virtual ~Mutex() {} |
| 36 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 37 | void Lock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 38 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 39 | bool TryLock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 40 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 41 | void Unlock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 42 | |
| 43 | const char* GetName() { return name_; } |
| 44 | |
| 45 | Thread* GetOwner() { return owner_; } |
| 46 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 47 | static Mutex* Create(const char* name); |
| 48 | |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 49 | // TODO: only needed because we lack a condition variable abstraction. |
| 50 | pthread_mutex_t* GetImpl() { return &lock_impl_; } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 51 | |
| 52 | private: |
Elliott Hughes | 18c0753 | 2011-08-18 15:50:51 -0700 | [diff] [blame] | 53 | explicit Mutex(const char* name) : name_(name), owner_(NULL) {} |
| 54 | |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 55 | void SetOwner(Thread* thread) { owner_ = thread; } |
| 56 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 57 | const char* name_; |
| 58 | |
| 59 | Thread* owner_; |
| 60 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 61 | pthread_mutex_t lock_impl_; |
| 62 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 63 | DISALLOW_COPY_AND_ASSIGN(Mutex); |
| 64 | }; |
| 65 | |
| 66 | class MutexLock { |
| 67 | public: |
| 68 | explicit MutexLock(Mutex *mu) : mu_(mu) { |
| 69 | mu_->Lock(); |
| 70 | } |
| 71 | ~MutexLock() { mu_->Unlock(); } |
| 72 | private: |
| 73 | Mutex* const mu_; |
| 74 | DISALLOW_COPY_AND_ASSIGN(MutexLock); |
| 75 | }; |
| 76 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 77 | // Stack allocated indirect reference table, allocated within the bridge frame |
| 78 | // between managed and native code. |
| 79 | class StackIndirectReferenceTable { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 80 | public: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 81 | // Number of references contained within this SIRT |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 82 | size_t NumberOfReferences() { |
| 83 | return number_of_references_; |
| 84 | } |
| 85 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 86 | // Link to previous SIRT or NULL |
| 87 | StackIndirectReferenceTable* Link() { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 88 | return link_; |
| 89 | } |
| 90 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 91 | Object** References() { |
| 92 | return references_; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 93 | } |
| 94 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 95 | // Offset of length within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 96 | static size_t NumberOfReferencesOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 97 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, number_of_references_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 98 | } |
| 99 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 100 | // Offset of link within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 101 | static size_t LinkOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 102 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, link_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | private: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 106 | StackIndirectReferenceTable() {} |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 107 | |
| 108 | size_t number_of_references_; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 109 | StackIndirectReferenceTable* link_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 110 | |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 111 | // Fake array, really allocated and filled in by jni_compiler. |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 112 | Object* references_[0]; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 113 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 114 | DISALLOW_COPY_AND_ASSIGN(StackIndirectReferenceTable); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 115 | }; |
| 116 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 117 | struct NativeToManagedRecord { |
| 118 | NativeToManagedRecord* link; |
| 119 | void* last_top_of_managed_stack; |
| 120 | }; |
| 121 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 122 | // Iterator over managed frames up to the first native-to-managed transition |
| 123 | class Frame { |
| 124 | Frame() : sp_(NULL) {} |
| 125 | |
| 126 | const Method* GetMethod() const { |
| 127 | return *sp_; |
| 128 | } |
| 129 | |
| 130 | bool HasNext() const { |
| 131 | return NextMethod() != NULL; |
| 132 | } |
| 133 | |
| 134 | void Next(); |
| 135 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 136 | uintptr_t GetPC() const; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 137 | |
| 138 | const Method** GetSP() const { |
| 139 | return sp_; |
| 140 | } |
| 141 | |
| 142 | // TODO: this is here for testing, remove when we have exception unit tests |
| 143 | // that use the real stack |
| 144 | void SetSP(const Method** sp) { |
| 145 | sp_ = sp; |
| 146 | } |
| 147 | |
| 148 | private: |
| 149 | const Method* NextMethod() const; |
| 150 | |
| 151 | friend class Thread; |
| 152 | |
| 153 | const Method** sp_; |
| 154 | }; |
| 155 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 156 | class Thread { |
| 157 | public: |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 158 | enum State { |
| 159 | kUnknown = -1, |
| 160 | kNew, |
| 161 | kRunnable, |
| 162 | kBlocked, |
| 163 | kWaiting, |
| 164 | kTimedWaiting, |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 165 | kNative, |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 166 | kTerminated, |
| 167 | }; |
| 168 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 169 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 170 | static const size_t kDefaultStackSize = 64 * KB; |
| 171 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 172 | // Runtime support function pointers |
| 173 | void* (*pMemcpy)(void*, const void*, size_t); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 174 | uint64_t (*pShlLong)(uint64_t, uint32_t); |
| 175 | uint64_t (*pShrLong)(uint64_t, uint32_t); |
| 176 | uint64_t (*pUshrLong)(uint64_t, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 177 | float (*pI2f)(int); |
| 178 | int (*pF2iz)(float); |
| 179 | float (*pD2f)(double); |
| 180 | double (*pF2d)(float); |
| 181 | double (*pI2d)(int); |
| 182 | int (*pD2iz)(double); |
| 183 | float (*pL2f)(long); |
| 184 | double (*pL2d)(long); |
| 185 | long long (*pArtF2l)(float); |
| 186 | long long (*pArtD2l)(double); |
| 187 | float (*pFadd)(float, float); |
| 188 | float (*pFsub)(float, float); |
| 189 | float (*pFdiv)(float, float); |
| 190 | float (*pFmul)(float, float); |
| 191 | float (*pFmodf)(float, float); |
| 192 | double (*pDadd)(double, double); |
| 193 | double (*pDsub)(double, double); |
| 194 | double (*pDdiv)(double, double); |
| 195 | double (*pDmul)(double, double); |
| 196 | double (*pFmod)(double, double); |
| 197 | int (*pIdivmod)(int, int); |
| 198 | int (*pIdiv)(int, int); |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 199 | long long (*pLmul)(long long, long long); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 200 | long long (*pLdivmod)(long long, long long); |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 201 | Array* (*pAllocFromCode)(uint32_t, Method*, int32_t); |
| 202 | Object* (*pNewInstanceFromCode)(uint32_t, Method*); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 203 | bool (*pArtUnlockObject)(struct Thread*, struct Object*); |
| 204 | bool (*pArtCanPutArrayElementNoThrow)(const struct ClassObject*, |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 205 | const struct ClassObject*); |
| 206 | int (*pArtInstanceofNonTrivialNoThrow) (const struct ClassObject*, |
| 207 | const struct ClassObject*); |
| 208 | int (*pArtInstanceofNonTrivial) (const struct ClassObject*, const struct ClassObject*); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 209 | struct Method* (*pArtFindInterfaceMethodInCache)(ClassObject*, uint32_t, |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 210 | const struct Method*, struct DvmDex*); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 211 | bool (*pArtUnlockObjectNoThrow)(struct Thread*, struct Object*); |
| 212 | void (*pArtLockObjectNoThrow)(struct Thread*, struct Object*); |
| 213 | struct Object* (*pArtAllocObjectNoThrow)(struct ClassObject*, int); |
| 214 | void (*pArtThrowException)(struct Thread*, struct Object*); |
buzbee | e6d6196 | 2011-08-27 11:58:19 -0700 | [diff] [blame] | 215 | void (*pArtHandleFillArrayDataNoThrow)(Array*, const uint16_t*); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 216 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 217 | // Creates a new thread. |
Brian Carlstrom | b765be0 | 2011-08-17 23:54:10 -0700 | [diff] [blame] | 218 | static Thread* Create(const Runtime* runtime); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 219 | |
| 220 | // Creates a new thread from the calling thread. |
Elliott Hughes | 515a5bc | 2011-08-17 11:08:34 -0700 | [diff] [blame] | 221 | static Thread* Attach(const Runtime* runtime); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 222 | |
| 223 | static Thread* Current() { |
Carl Shapiro | d0e7e77 | 2011-07-15 14:31:01 -0700 | [diff] [blame] | 224 | void* thread = pthread_getspecific(Thread::pthread_key_self_); |
| 225 | return reinterpret_cast<Thread*>(thread); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 226 | } |
| 227 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 228 | uint32_t GetId() const { |
| 229 | return id_; |
| 230 | } |
| 231 | |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 232 | pid_t GetTid() const; |
| 233 | |
| 234 | pthread_t GetImpl() const { |
| 235 | return handle_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | bool IsExceptionPending() const { |
Elliott Hughes | b20a554 | 2011-08-12 18:03:12 -0700 | [diff] [blame] | 239 | return exception_ != NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 242 | Throwable* GetException() const { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 243 | return exception_; |
| 244 | } |
| 245 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 246 | Frame GetTopOfStack() const { |
| 247 | return top_of_managed_stack_; |
| 248 | } |
| 249 | |
| 250 | // TODO: this is here for testing, remove when we have exception unit tests |
| 251 | // that use the real stack |
| 252 | void SetTopOfStack(void* stack) { |
| 253 | top_of_managed_stack_.SetSP(reinterpret_cast<const Method**>(stack)); |
| 254 | } |
| 255 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 256 | void SetException(Throwable* new_exception) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 257 | CHECK(new_exception != NULL); |
| 258 | // TODO: CHECK(exception_ == NULL); |
| 259 | exception_ = new_exception; // TODO |
| 260 | } |
| 261 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 262 | void ThrowNewException(const char* exception_class_descriptor, const char* fmt, ...) |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 263 | __attribute__ ((format(printf, 3, 4))); |
| 264 | |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 265 | // This exception is special, because we need to pre-allocate an instance. |
| 266 | void ThrowOutOfMemoryError(); |
| 267 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 268 | void ClearException() { |
| 269 | exception_ = NULL; |
| 270 | } |
| 271 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 272 | Frame FindExceptionHandler(void* throw_pc, void** handler_pc); |
| 273 | |
| 274 | void* FindExceptionHandlerInMethod(const Method* method, |
| 275 | void* throw_pc, |
| 276 | const DexFile& dex_file, |
| 277 | ClassLinker* class_linker); |
| 278 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 279 | // Offset of exception within Thread, used by generated code |
| 280 | static ThreadOffset ExceptionOffset() { |
| 281 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); |
| 282 | } |
| 283 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 284 | // Offset of id within Thread, used by generated code |
| 285 | static ThreadOffset IdOffset() { |
| 286 | return ThreadOffset(OFFSETOF_MEMBER(Thread, id_)); |
| 287 | } |
| 288 | |
| 289 | // Offset of card_table within Thread, used by generated code |
| 290 | static ThreadOffset CardTableOffset() { |
| 291 | return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); |
| 292 | } |
| 293 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 294 | void SetName(const char* name); |
| 295 | |
| 296 | void Suspend(); |
| 297 | |
| 298 | bool IsSuspended(); |
| 299 | |
| 300 | void Resume(); |
| 301 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 302 | static bool Startup(); |
| 303 | static void Shutdown(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 304 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 305 | State GetState() const { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 306 | return state_; |
| 307 | } |
| 308 | |
| 309 | void SetState(State new_state) { |
| 310 | state_ = new_state; |
| 311 | } |
| 312 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 313 | static ThreadOffset SuspendCountOffset() { |
| 314 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); |
| 315 | } |
| 316 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 317 | // Offset of state within Thread, used by generated code |
| 318 | static ThreadOffset StateOffset() { |
| 319 | return ThreadOffset(OFFSETOF_MEMBER(Thread, state_)); |
| 320 | } |
| 321 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 322 | // JNI methods |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 323 | JNIEnvExt* GetJniEnv() const { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 324 | return jni_env_; |
| 325 | } |
| 326 | |
| 327 | // Offset of JNI environment within Thread, used by generated code |
| 328 | static ThreadOffset JniEnvOffset() { |
| 329 | return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); |
| 330 | } |
| 331 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 332 | // Offset of top of managed stack address, used by generated code |
| 333 | static ThreadOffset TopOfManagedStackOffset() { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 334 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_) + |
| 335 | OFFSETOF_MEMBER(Frame, sp_)); |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 336 | } |
| 337 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 338 | // Offset of top stack indirect reference table within Thread, used by |
| 339 | // generated code |
| 340 | static ThreadOffset TopSirtOffset() { |
| 341 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 342 | } |
| 343 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 344 | // Number of references allocated in SIRTs on this thread |
| 345 | size_t NumSirtReferences(); |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 346 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 347 | // Is the given obj in this thread's stack indirect reference table? |
| 348 | bool SirtContains(jobject obj); |
| 349 | |
| 350 | // Convert a jobject into a Object* |
| 351 | Object* DecodeJObject(jobject obj); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 352 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 353 | // Offset of exception_entry_point_ within Thread, used by generated code |
| 354 | static ThreadOffset ExceptionEntryPointOffset() { |
| 355 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_entry_point_)); |
| 356 | } |
| 357 | |
| 358 | void RegisterExceptionEntryPoint(void (*handler)(Method**)) { |
| 359 | exception_entry_point_ = handler; |
| 360 | } |
| 361 | |
| 362 | // Offset of suspend_count_entry_point_ within Thread, used by generated code |
| 363 | static ThreadOffset SuspendCountEntryPointOffset() { |
| 364 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_entry_point_)); |
| 365 | } |
| 366 | |
| 367 | void RegisterSuspendCountEntryPoint(void (*handler)(Method**)) { |
| 368 | suspend_count_entry_point_ = handler; |
| 369 | } |
| 370 | |
| 371 | // Increasing the suspend count, will cause the thread to run to safepoint |
| 372 | void IncrementSuspendCount() { suspend_count_++; } |
| 373 | void DecrementSuspendCount() { suspend_count_--; } |
| 374 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 375 | // Linked list recording transitions from native to managed code |
| 376 | void PushNativeToManagedRecord(NativeToManagedRecord* record) { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 377 | record->last_top_of_managed_stack = reinterpret_cast<void*>(top_of_managed_stack_.GetSP()); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 378 | record->link = native_to_managed_record_; |
| 379 | native_to_managed_record_ = record; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 380 | top_of_managed_stack_.SetSP(NULL); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 381 | } |
| 382 | void PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
| 383 | native_to_managed_record_ = record.link; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 384 | top_of_managed_stack_.SetSP( reinterpret_cast<const Method**>(record.last_top_of_managed_stack) ); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 387 | const ClassLoader* GetClassLoaderOverride() { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 388 | return class_loader_override_; |
| 389 | } |
| 390 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 391 | void SetClassLoaderOverride(const ClassLoader* class_loader_override) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 392 | class_loader_override_ = class_loader_override; |
| 393 | } |
| 394 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 395 | struct InternalStackTrace { |
| 396 | const Method* method; |
| 397 | uintptr_t pc; |
| 398 | }; |
| 399 | |
| 400 | // Get the top length frames information |
| 401 | InternalStackTrace* GetStackTrace(uint16_t length); |
| 402 | |
| 403 | ObjectArray<StackTraceElement>* GetStackTraceElement(uint16_t length, InternalStackTrace *raw_trace); |
| 404 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 405 | private: |
Elliott Hughes | 40ef99e | 2011-08-11 17:44:34 -0700 | [diff] [blame] | 406 | Thread() |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 407 | : id_(1234), |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 408 | top_of_managed_stack_(), |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 409 | native_to_managed_record_(NULL), |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 410 | top_sirt_(NULL), |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 411 | jni_env_(NULL), |
| 412 | exception_(NULL), |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 413 | suspend_count_(0), |
| 414 | class_loader_override_(NULL) { |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 415 | InitFunctionPointers(); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 416 | } |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 417 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 418 | ~Thread(); |
| 419 | friend class Runtime; // For ~Thread. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 420 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 421 | void InitCpu(); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 422 | void InitFunctionPointers(); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 423 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 424 | // Managed thread id. |
| 425 | uint32_t id_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 426 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 427 | // FIXME: placeholder for the gc cardTable |
| 428 | uint32_t card_table_; |
| 429 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 430 | // Top of the managed stack, written out prior to the state transition from |
| 431 | // kRunnable to kNative. Uses include to give the starting point for scanning |
| 432 | // a managed stack when a thread is in native code. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 433 | Frame top_of_managed_stack_; |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 434 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 435 | // A linked list (of stack allocated records) recording transitions from |
| 436 | // native to managed code. |
| 437 | NativeToManagedRecord* native_to_managed_record_; |
| 438 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 439 | // Top of linked list of stack indirect reference tables or NULL for none |
| 440 | StackIndirectReferenceTable* top_sirt_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 441 | |
| 442 | // Every thread may have an associated JNI environment |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 443 | JNIEnvExt* jni_env_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 444 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 445 | State state_; |
| 446 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 447 | // Native thread handle. |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 448 | pthread_t handle_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 449 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 450 | // Initialized to "this". On certain architectures (such as x86) reading |
| 451 | // off of Thread::Current is easy but getting the address of Thread::Current |
| 452 | // is hard. This field can be read off of Thread::Current to give the address. |
| 453 | Thread* self_; |
| 454 | |
| 455 | Runtime* runtime_; |
| 456 | |
| 457 | // The pending exception or NULL. |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 458 | Throwable* exception_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 459 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 460 | // A non-zero value is used to tell the current thread to enter a safe point |
| 461 | // at the next poll. |
| 462 | int suspend_count_; |
| 463 | |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 464 | // Needed to get the right ClassLoader in JNI_OnLoad, but also |
| 465 | // useful for testing. |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 466 | const ClassLoader* class_loader_override_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 467 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 468 | // TLS key used to retrieve the VM thread object. |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 469 | static pthread_key_t pthread_key_self_; |
| 470 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 471 | // Entry point called when exception_ is set |
| 472 | void (*exception_entry_point_)(Method** frame); |
| 473 | |
| 474 | // Entry point called when suspend_count_ is non-zero |
| 475 | void (*suspend_count_entry_point_)(Method** frame); |
| 476 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 477 | DISALLOW_COPY_AND_ASSIGN(Thread); |
| 478 | }; |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 479 | std::ostream& operator<<(std::ostream& os, const Thread& thread); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 480 | std::ostream& operator<<(std::ostream& os, const Thread::State& state); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 481 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 482 | class ThreadList { |
| 483 | public: |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 484 | static const int kMaxId = 0xFFFF; |
| 485 | static const int kInvalidId = 0; |
| 486 | static const int kMainId = 1; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 487 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 488 | static ThreadList* Create(); |
| 489 | |
| 490 | ~ThreadList(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 491 | |
| 492 | void Register(Thread* thread); |
| 493 | |
| 494 | void Unregister(Thread* thread); |
| 495 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 496 | bool Contains(Thread* thread); |
| 497 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 498 | void Lock() { |
| 499 | lock_->Lock(); |
| 500 | } |
| 501 | |
| 502 | void Unlock() { |
| 503 | lock_->Unlock(); |
| 504 | }; |
| 505 | |
| 506 | private: |
| 507 | ThreadList(); |
| 508 | |
| 509 | std::list<Thread*> list_; |
| 510 | |
| 511 | Mutex* lock_; |
| 512 | |
| 513 | DISALLOW_COPY_AND_ASSIGN(ThreadList); |
| 514 | }; |
| 515 | |
| 516 | class ThreadListLock { |
| 517 | public: |
| 518 | ThreadListLock(ThreadList* thread_list, Thread* current_thread) |
| 519 | : thread_list_(thread_list) { |
| 520 | if (current_thread == NULL) { // try to get it from TLS |
| 521 | current_thread = Thread::Current(); |
| 522 | } |
| 523 | Thread::State old_state; |
| 524 | if (current_thread != NULL) { |
| 525 | old_state = current_thread->GetState(); |
| 526 | current_thread->SetState(Thread::kWaiting); // TODO: VMWAIT |
| 527 | } else { |
| 528 | // happens during VM shutdown |
| 529 | old_state = Thread::kUnknown; // TODO: something else |
| 530 | } |
| 531 | thread_list_->Lock(); |
| 532 | if (current_thread != NULL) { |
| 533 | current_thread->SetState(old_state); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | ~ThreadListLock() { |
| 538 | thread_list_->Unlock(); |
| 539 | } |
| 540 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 541 | private: |
| 542 | ThreadList* thread_list_; |
| 543 | |
| 544 | DISALLOW_COPY_AND_ASSIGN(ThreadListLock); |
| 545 | }; |
| 546 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 547 | } // namespace art |
| 548 | |
| 549 | #endif // ART_SRC_THREAD_H_ |