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> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 7 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 8 | #include <bitset> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 9 | #include <iosfwd> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 10 | #include <list> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 11 | |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 12 | #include "dex_file.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 13 | #include "globals.h" |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 14 | #include "jni_internal.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 15 | #include "logging.h" |
| 16 | #include "macros.h" |
Brian Carlstrom | b765be0 | 2011-08-17 23:54:10 -0700 | [diff] [blame] | 17 | #include "mem_map.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 18 | #include "offsets.h" |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 19 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 20 | namespace art { |
| 21 | |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 22 | class Array; |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 23 | class Class; |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 24 | class ClassLinker; |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 25 | class ClassLoader; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 26 | class Method; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 27 | class Object; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 28 | class Runtime; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 29 | class Thread; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 30 | class ThreadList; |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 31 | class Throwable; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 32 | class StackTraceElement; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 33 | class StaticStorageBase; |
| 34 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 35 | template<class T> class ObjectArray; |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 36 | template<class T> class PrimitiveArray; |
| 37 | typedef PrimitiveArray<int32_t> IntArray; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 38 | |
| 39 | class Mutex { |
| 40 | public: |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 41 | ~Mutex(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 42 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 43 | void Lock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 44 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 45 | bool TryLock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 46 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 47 | void Unlock(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 48 | |
| 49 | const char* GetName() { return name_; } |
| 50 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 51 | static Mutex* Create(const char* name); |
| 52 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 53 | pthread_mutex_t* GetImpl() { return &mutex_; } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 54 | |
| 55 | private: |
Elliott Hughes | 92b3b56 | 2011-09-08 16:32:26 -0700 | [diff] [blame] | 56 | explicit Mutex(const char* name) : name_(name) {} |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 57 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 58 | const char* name_; |
| 59 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 60 | pthread_mutex_t mutex_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 61 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 62 | DISALLOW_COPY_AND_ASSIGN(Mutex); |
| 63 | }; |
| 64 | |
| 65 | class MutexLock { |
| 66 | public: |
| 67 | explicit MutexLock(Mutex *mu) : mu_(mu) { |
| 68 | mu_->Lock(); |
| 69 | } |
| 70 | ~MutexLock() { mu_->Unlock(); } |
| 71 | private: |
| 72 | Mutex* const mu_; |
| 73 | DISALLOW_COPY_AND_ASSIGN(MutexLock); |
| 74 | }; |
| 75 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 76 | // Stack allocated indirect reference table, allocated within the bridge frame |
| 77 | // between managed and native code. |
| 78 | class StackIndirectReferenceTable { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 79 | public: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 80 | // Number of references contained within this SIRT |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 81 | size_t NumberOfReferences() { |
| 82 | return number_of_references_; |
| 83 | } |
| 84 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 85 | // Link to previous SIRT or NULL |
| 86 | StackIndirectReferenceTable* Link() { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 87 | return link_; |
| 88 | } |
| 89 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 90 | Object** References() { |
| 91 | return references_; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 94 | // Offset of length within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 95 | static size_t NumberOfReferencesOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 96 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, number_of_references_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 97 | } |
| 98 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 99 | // Offset of link within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 100 | static size_t LinkOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 101 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, link_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | private: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 105 | StackIndirectReferenceTable() {} |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 106 | |
| 107 | size_t number_of_references_; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 108 | StackIndirectReferenceTable* link_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 109 | |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 110 | // Fake array, really allocated and filled in by jni_compiler. |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 111 | Object* references_[0]; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 112 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 113 | DISALLOW_COPY_AND_ASSIGN(StackIndirectReferenceTable); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 114 | }; |
| 115 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 116 | struct NativeToManagedRecord { |
| 117 | NativeToManagedRecord* link; |
| 118 | void* last_top_of_managed_stack; |
| 119 | }; |
| 120 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 121 | // Iterator over managed frames up to the first native-to-managed transition |
| 122 | class Frame { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 123 | public: |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 124 | Frame() : sp_(NULL) {} |
| 125 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 126 | Method* GetMethod() const { |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 127 | return (sp_ != NULL) ? *sp_ : NULL; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 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 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 138 | Method** GetSP() const { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 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 |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 144 | void SetSP(Method** sp) { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 145 | sp_ = sp; |
| 146 | } |
| 147 | |
| 148 | private: |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 149 | Method* NextMethod() const; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 150 | |
| 151 | friend class Thread; |
| 152 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 153 | Method** sp_; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 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 | cefd187 | 2011-09-09 09:59:52 -0700 | [diff] [blame] | 169 | static const size_t kStackOverflowReservedBytes = 1024; // Space to throw a StackOverflowError in. |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 170 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 171 | static const size_t kDefaultStackSize = 64 * KB; |
| 172 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 173 | // Runtime support function pointers |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 174 | void (*pDebugMe)(Method*, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 175 | void* (*pMemcpy)(void*, const void*, size_t); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 176 | uint64_t (*pShlLong)(uint64_t, uint32_t); |
| 177 | uint64_t (*pShrLong)(uint64_t, uint32_t); |
| 178 | uint64_t (*pUshrLong)(uint64_t, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 179 | float (*pI2f)(int); |
| 180 | int (*pF2iz)(float); |
| 181 | float (*pD2f)(double); |
| 182 | double (*pF2d)(float); |
| 183 | double (*pI2d)(int); |
| 184 | int (*pD2iz)(double); |
| 185 | float (*pL2f)(long); |
| 186 | double (*pL2d)(long); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 187 | long long (*pF2l)(float); |
| 188 | long long (*pD2l)(double); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 189 | float (*pFadd)(float, float); |
| 190 | float (*pFsub)(float, float); |
| 191 | float (*pFdiv)(float, float); |
| 192 | float (*pFmul)(float, float); |
| 193 | float (*pFmodf)(float, float); |
| 194 | double (*pDadd)(double, double); |
| 195 | double (*pDsub)(double, double); |
| 196 | double (*pDdiv)(double, double); |
| 197 | double (*pDmul)(double, double); |
| 198 | double (*pFmod)(double, double); |
| 199 | int (*pIdivmod)(int, int); |
| 200 | int (*pIdiv)(int, int); |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 201 | long long (*pLmul)(long long, long long); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 202 | long long (*pLdivmod)(long long, long long); |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 203 | Array* (*pAllocFromCode)(uint32_t, Method*, int32_t); |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 204 | Array* (*pCheckAndAllocFromCode)(uint32_t, Method*, int32_t); |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 205 | Object* (*pAllocObjectFromCode)(uint32_t, Method*); |
buzbee | e193174 | 2011-08-28 21:15:53 -0700 | [diff] [blame] | 206 | uint32_t (*pGet32Static)(uint32_t, const Method*); |
| 207 | void (*pSet32Static)(uint32_t, const Method*, uint32_t); |
| 208 | uint64_t (*pGet64Static)(uint32_t, const Method*); |
| 209 | void (*pSet64Static)(uint32_t, const Method*, uint64_t); |
| 210 | Object* (*pGetObjStatic)(uint32_t, const Method*); |
| 211 | void (*pSetObjStatic)(uint32_t, const Method*, Object*); |
Elliott Hughes | 0f4c41d | 2011-09-04 14:58:03 -0700 | [diff] [blame] | 212 | void (*pCanPutArrayElementFromCode)(const Class*, const Class*); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 213 | bool (*pInstanceofNonTrivialFromCode) (const Object*, const Class*); |
| 214 | void (*pCheckCastFromCode) (const Class*, const Class*); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 215 | Method* (*pFindInterfaceMethodInCache)(Class*, uint32_t, const Method*, struct DvmDex*); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 216 | void (*pUnlockObjectFromCode)(Thread*, Object*); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 217 | void (*pLockObjectFromCode)(Thread*, Object*); |
| 218 | void (*pThrowException)(Thread*, Throwable*); |
| 219 | void (*pHandleFillArrayDataFromCode)(Array*, const uint16_t*); |
| 220 | Class* (*pInitializeTypeFromCode)(uint32_t, Method*); |
buzbee | 561227c | 2011-09-02 15:28:19 -0700 | [diff] [blame] | 221 | void (*pResolveMethodFromCode)(Method*, uint32_t); |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 222 | void (*pInvokeInterfaceTrampoline)(void*, void*, void*, void*); |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 223 | StaticStorageBase* (*pInitializeStaticStorage)(uint32_t, const Method*); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 224 | Field* (*pFindFieldFromCode)(uint32_t, const Method*); |
buzbee | 0d966cf | 2011-09-08 17:34:58 -0700 | [diff] [blame] | 225 | void (*pCheckSuspendFromCode)(Thread*); |
buzbee | cefd187 | 2011-09-09 09:59:52 -0700 | [diff] [blame] | 226 | void (*pStackOverflowFromCode)(Method*); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 227 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 228 | class StackVisitor { |
| 229 | public: |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 230 | virtual ~StackVisitor() {} |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 231 | virtual bool VisitFrame(const Frame& frame) = 0; |
| 232 | }; |
| 233 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 234 | // Creates a new thread. |
Brian Carlstrom | b765be0 | 2011-08-17 23:54:10 -0700 | [diff] [blame] | 235 | static Thread* Create(const Runtime* runtime); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 236 | |
| 237 | // Creates a new thread from the calling thread. |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 238 | static Thread* Attach(const Runtime* runtime, const char* name, bool as_daemon); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 239 | |
| 240 | static Thread* Current() { |
Carl Shapiro | d0e7e77 | 2011-07-15 14:31:01 -0700 | [diff] [blame] | 241 | void* thread = pthread_getspecific(Thread::pthread_key_self_); |
| 242 | return reinterpret_cast<Thread*>(thread); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 243 | } |
| 244 | |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 245 | void Dump(std::ostream& os) const; |
| 246 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 247 | State GetState() const { |
| 248 | return state_; |
| 249 | } |
| 250 | |
| 251 | State SetState(State new_state) { |
| 252 | State old_state = state_; |
| 253 | state_ = new_state; |
| 254 | return old_state; |
| 255 | } |
| 256 | |
| 257 | bool CanAccessDirectReferences() const { |
Elliott Hughes | a59d179 | 2011-09-04 18:42:35 -0700 | [diff] [blame] | 258 | // TODO: when we have a moving collector, we'll need: return state_ == kRunnable; |
| 259 | return true; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 260 | } |
| 261 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 262 | uint32_t GetThinLockId() const { |
| 263 | return thin_lock_id_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 264 | } |
| 265 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 266 | pid_t GetTid() const { |
| 267 | return tid_; |
| 268 | } |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 269 | |
| 270 | pthread_t GetImpl() const { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 271 | return pthread_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 274 | // Returns the Method* for the current method. |
| 275 | // This is used by the JNI implementation for logging and diagnostic purposes. |
| 276 | const Method* GetCurrentMethod() const { |
| 277 | return top_of_managed_stack_.GetMethod(); |
| 278 | } |
| 279 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 280 | bool IsExceptionPending() const { |
Elliott Hughes | b20a554 | 2011-08-12 18:03:12 -0700 | [diff] [blame] | 281 | return exception_ != NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 284 | Throwable* GetException() const { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 285 | DCHECK(CanAccessDirectReferences()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 286 | return exception_; |
| 287 | } |
| 288 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 289 | void SetException(Throwable* new_exception) { |
| 290 | DCHECK(CanAccessDirectReferences()); |
| 291 | CHECK(new_exception != NULL); |
| 292 | // TODO: CHECK(exception_ == NULL); |
| 293 | exception_ = new_exception; // TODO |
| 294 | } |
| 295 | |
| 296 | void ClearException() { |
| 297 | exception_ = NULL; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 300 | Frame GetTopOfStack() const { |
| 301 | return top_of_managed_stack_; |
| 302 | } |
| 303 | |
| 304 | // TODO: this is here for testing, remove when we have exception unit tests |
| 305 | // that use the real stack |
| 306 | void SetTopOfStack(void* stack) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 307 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(stack)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 310 | void ThrowNewException(const char* exception_class_descriptor, const char* fmt, ...) |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 311 | __attribute__ ((format(printf, 3, 4))); |
| 312 | |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 313 | // This exception is special, because we need to pre-allocate an instance. |
| 314 | void ThrowOutOfMemoryError(); |
| 315 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 316 | Frame FindExceptionHandler(void* throw_pc, void** handler_pc); |
| 317 | |
| 318 | void* FindExceptionHandlerInMethod(const Method* method, |
| 319 | void* throw_pc, |
| 320 | const DexFile& dex_file, |
| 321 | ClassLinker* class_linker); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 322 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 323 | void SetName(const char* name); |
| 324 | |
| 325 | void Suspend(); |
| 326 | |
| 327 | bool IsSuspended(); |
| 328 | |
| 329 | void Resume(); |
| 330 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 331 | static void Startup(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 332 | static void Shutdown(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 333 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 334 | // JNI methods |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 335 | JNIEnvExt* GetJniEnv() const { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 336 | return jni_env_; |
| 337 | } |
| 338 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 339 | // Number of references allocated in SIRTs on this thread |
| 340 | size_t NumSirtReferences(); |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 341 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 342 | // Is the given obj in this thread's stack indirect reference table? |
| 343 | bool SirtContains(jobject obj); |
| 344 | |
| 345 | // Convert a jobject into a Object* |
| 346 | Object* DecodeJObject(jobject obj); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 347 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 348 | void RegisterExceptionEntryPoint(void (*handler)(Method**)) { |
| 349 | exception_entry_point_ = handler; |
| 350 | } |
| 351 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 352 | void RegisterSuspendCountEntryPoint(void (*handler)(Method**)) { |
| 353 | suspend_count_entry_point_ = handler; |
| 354 | } |
| 355 | |
| 356 | // Increasing the suspend count, will cause the thread to run to safepoint |
| 357 | void IncrementSuspendCount() { suspend_count_++; } |
| 358 | void DecrementSuspendCount() { suspend_count_--; } |
| 359 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 360 | // Linked list recording transitions from native to managed code |
| 361 | void PushNativeToManagedRecord(NativeToManagedRecord* record) { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 362 | 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] | 363 | record->link = native_to_managed_record_; |
| 364 | native_to_managed_record_ = record; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 365 | top_of_managed_stack_.SetSP(NULL); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 366 | } |
| 367 | void PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
| 368 | native_to_managed_record_ = record.link; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 369 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(record.last_top_of_managed_stack)); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 372 | const ClassLoader* GetClassLoaderOverride() { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 373 | // TODO: need to place the class_loader_override_ in a handle |
| 374 | // DCHECK(CanAccessDirectReferences()); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 375 | return class_loader_override_; |
| 376 | } |
| 377 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 378 | void SetClassLoaderOverride(const ClassLoader* class_loader_override) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 379 | class_loader_override_ = class_loader_override; |
| 380 | } |
| 381 | |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 382 | // Allocate stack trace |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 383 | ObjectArray<StackTraceElement>* AllocStackTrace(); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 384 | |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 385 | void VisitRoots(Heap::RootVisitor* visitor, void* arg) const; |
| 386 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 387 | // |
| 388 | // Offsets of various members of native Thread class, used by compiled code. |
| 389 | // |
| 390 | |
| 391 | static ThreadOffset SelfOffset() { |
| 392 | return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); |
| 393 | } |
| 394 | |
| 395 | static ThreadOffset ExceptionOffset() { |
| 396 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); |
| 397 | } |
| 398 | |
| 399 | static ThreadOffset IdOffset() { |
| 400 | return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); |
| 401 | } |
| 402 | |
| 403 | static ThreadOffset CardTableOffset() { |
| 404 | return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); |
| 405 | } |
| 406 | |
| 407 | static ThreadOffset SuspendCountOffset() { |
| 408 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); |
| 409 | } |
| 410 | |
| 411 | static ThreadOffset StateOffset() { |
| 412 | return ThreadOffset(OFFSETOF_MEMBER(Thread, state_)); |
| 413 | } |
| 414 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 415 | static ThreadOffset StackEndOffset() { |
| 416 | return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | static ThreadOffset JniEnvOffset() { |
| 420 | return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); |
| 421 | } |
| 422 | |
| 423 | static ThreadOffset TopOfManagedStackOffset() { |
| 424 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_) + |
| 425 | OFFSETOF_MEMBER(Frame, sp_)); |
| 426 | } |
| 427 | |
| 428 | static ThreadOffset TopSirtOffset() { |
| 429 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); |
| 430 | } |
| 431 | |
| 432 | static ThreadOffset ExceptionEntryPointOffset() { |
| 433 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_entry_point_)); |
| 434 | } |
| 435 | |
| 436 | static ThreadOffset SuspendCountEntryPointOffset() { |
| 437 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_entry_point_)); |
| 438 | } |
| 439 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 440 | private: |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 441 | Thread(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 442 | ~Thread(); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 443 | friend class ThreadList; // For ~Thread. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 444 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 445 | void CreatePeer(const char* name, bool as_daemon); |
| 446 | friend class Runtime; // For CreatePeer. |
| 447 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 448 | void DumpState(std::ostream& os) const; |
| 449 | void DumpStack(std::ostream& os) const; |
| 450 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 451 | void InitCpu(); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 452 | void InitFunctionPointers(); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 453 | void InitStackHwm(); |
| 454 | |
| 455 | static void ThreadExitCallback(void* arg); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 456 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 457 | void WalkStack(StackVisitor* visitor); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 458 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 459 | // Thin lock thread id. This is a small integer used by the thin lock implementation. |
| 460 | // This is not to be confused with the native thread's tid, nor is it the value returned |
| 461 | // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One |
| 462 | // important difference between this id and the ids visible to managed code is that these |
| 463 | // ones get reused (to ensure that they fit in the number of bits available). |
| 464 | uint32_t thin_lock_id_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 465 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 466 | // System thread id. |
| 467 | pid_t tid_; |
| 468 | |
| 469 | // Native thread handle. |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 470 | pthread_t pthread_; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 471 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 472 | bool is_daemon_; |
| 473 | |
| 474 | // Our managed peer (an instance of java.lang.Thread). |
| 475 | Object* peer_; |
| 476 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 477 | // FIXME: placeholder for the gc cardTable |
| 478 | uint32_t card_table_; |
| 479 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 480 | // The end of this thread's stack. This is the lowest safely-addressable address on the stack. |
| 481 | // We leave extra space so there's room for the code that throws StackOverflowError. |
| 482 | byte* stack_end_; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 483 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 484 | // Top of the managed stack, written out prior to the state transition from |
| 485 | // kRunnable to kNative. Uses include to give the starting point for scanning |
| 486 | // a managed stack when a thread is in native code. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 487 | Frame top_of_managed_stack_; |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 488 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 489 | // A linked list (of stack allocated records) recording transitions from |
| 490 | // native to managed code. |
| 491 | NativeToManagedRecord* native_to_managed_record_; |
| 492 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 493 | // Top of linked list of stack indirect reference tables or NULL for none |
| 494 | StackIndirectReferenceTable* top_sirt_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 495 | |
| 496 | // Every thread may have an associated JNI environment |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 497 | JNIEnvExt* jni_env_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 498 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 499 | State state_; |
| 500 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 501 | // Initialized to "this". On certain architectures (such as x86) reading |
| 502 | // off of Thread::Current is easy but getting the address of Thread::Current |
| 503 | // is hard. This field can be read off of Thread::Current to give the address. |
| 504 | Thread* self_; |
| 505 | |
| 506 | Runtime* runtime_; |
| 507 | |
| 508 | // The pending exception or NULL. |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 509 | Throwable* exception_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 510 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 511 | // A non-zero value is used to tell the current thread to enter a safe point |
| 512 | // at the next poll. |
| 513 | int suspend_count_; |
| 514 | |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 515 | // Needed to get the right ClassLoader in JNI_OnLoad, but also |
| 516 | // useful for testing. |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 517 | const ClassLoader* class_loader_override_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 518 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 519 | // TLS key used to retrieve the VM thread object. |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 520 | static pthread_key_t pthread_key_self_; |
| 521 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 522 | // Entry point called when exception_ is set |
| 523 | void (*exception_entry_point_)(Method** frame); |
| 524 | |
| 525 | // Entry point called when suspend_count_ is non-zero |
| 526 | void (*suspend_count_entry_point_)(Method** frame); |
| 527 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 528 | DISALLOW_COPY_AND_ASSIGN(Thread); |
| 529 | }; |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 530 | std::ostream& operator<<(std::ostream& os, const Thread& thread); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 531 | std::ostream& operator<<(std::ostream& os, const Thread::State& state); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 532 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 533 | class ThreadList { |
| 534 | public: |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 535 | static const uint32_t kMaxThreadId = 0xFFFF; |
| 536 | static const uint32_t kInvalidId = 0; |
| 537 | static const uint32_t kMainId = 1; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 538 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 539 | static ThreadList* Create(); |
| 540 | |
| 541 | ~ThreadList(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 542 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 543 | void Dump(std::ostream& os); |
| 544 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 545 | void Register(Thread* thread); |
| 546 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 547 | void Unregister(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 548 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 549 | bool Contains(Thread* thread); |
| 550 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 551 | void VisitRoots(Heap::RootVisitor* visitor, void* arg) const; |
| 552 | |
| 553 | private: |
| 554 | ThreadList(); |
| 555 | |
| 556 | uint32_t AllocThreadId(); |
| 557 | void ReleaseThreadId(uint32_t id); |
| 558 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 559 | void Lock() { |
| 560 | lock_->Lock(); |
| 561 | } |
| 562 | |
| 563 | void Unlock() { |
| 564 | lock_->Unlock(); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 565 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 566 | |
| 567 | Mutex* lock_; |
| 568 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 569 | std::bitset<kMaxThreadId> allocated_ids_; |
| 570 | std::list<Thread*> list_; |
| 571 | |
| 572 | friend class Thread; |
| 573 | friend class ThreadListLock; |
| 574 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 575 | DISALLOW_COPY_AND_ASSIGN(ThreadList); |
| 576 | }; |
| 577 | |
| 578 | class ThreadListLock { |
| 579 | public: |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 580 | ThreadListLock(Thread* self = NULL) { |
| 581 | if (self == NULL) { |
| 582 | // Try to get it from TLS. |
| 583 | self = Thread::Current(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 584 | } |
| 585 | Thread::State old_state; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 586 | if (self != NULL) { |
| 587 | old_state = self->SetState(Thread::kWaiting); // TODO: VMWAIT |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 588 | } else { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 589 | // This happens during VM shutdown. |
| 590 | old_state = Thread::kUnknown; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 591 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 592 | Runtime::Current()->GetThreadList()->Lock(); |
| 593 | if (self != NULL) { |
| 594 | self->SetState(old_state); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 595 | } |
| 596 | } |
| 597 | |
| 598 | ~ThreadListLock() { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 599 | Runtime::Current()->GetThreadList()->Unlock(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 600 | } |
| 601 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 602 | private: |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 603 | DISALLOW_COPY_AND_ASSIGN(ThreadListLock); |
| 604 | }; |
| 605 | |
Elliott Hughes | ad7c2a3 | 2011-08-31 11:58:10 -0700 | [diff] [blame] | 606 | class ScopedThreadStateChange { |
| 607 | public: |
| 608 | ScopedThreadStateChange(Thread* thread, Thread::State new_state) : thread_(thread) { |
| 609 | old_thread_state_ = thread_->SetState(new_state); |
| 610 | } |
| 611 | |
| 612 | ~ScopedThreadStateChange() { |
| 613 | thread_->SetState(old_thread_state_); |
| 614 | } |
| 615 | |
| 616 | private: |
| 617 | Thread* thread_; |
| 618 | Thread::State old_thread_state_; |
| 619 | DISALLOW_COPY_AND_ASSIGN(ScopedThreadStateChange); |
| 620 | }; |
| 621 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 622 | } // namespace art |
| 623 | |
| 624 | #endif // ART_SRC_THREAD_H_ |