Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 16 | |
| 17 | #ifndef ART_SRC_THREAD_H_ |
| 18 | #define ART_SRC_THREAD_H_ |
| 19 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 20 | #include <pthread.h> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 21 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 22 | #include <bitset> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 23 | #include <iosfwd> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 24 | #include <list> |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 25 | #include <string> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 26 | |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 27 | #include "dex_file.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 28 | #include "globals.h" |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 29 | #include "jni_internal.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 30 | #include "logging.h" |
| 31 | #include "macros.h" |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 32 | #include "mutex.h" |
Brian Carlstrom | b765be0 | 2011-08-17 23:54:10 -0700 | [diff] [blame] | 33 | #include "mem_map.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 34 | #include "offsets.h" |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 35 | #include "UniquePtr.h" |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 36 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 37 | namespace art { |
| 38 | |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 39 | class Array; |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 40 | class Class; |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 41 | class ClassLinker; |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 42 | class ClassLoader; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 43 | class Context; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 44 | class Method; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 45 | class Monitor; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 46 | class Object; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 47 | class Runtime; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 48 | class Thread; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 49 | class ThreadList; |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 50 | class Throwable; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 51 | class StackTraceElement; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 52 | class StaticStorageBase; |
| 53 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 54 | template<class T> class ObjectArray; |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 55 | template<class T> class PrimitiveArray; |
| 56 | typedef PrimitiveArray<int32_t> IntArray; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 57 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 58 | // Stack allocated indirect reference table, allocated within the bridge frame |
| 59 | // between managed and native code. |
| 60 | class StackIndirectReferenceTable { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 61 | public: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 62 | // Number of references contained within this SIRT |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 63 | size_t NumberOfReferences() { |
| 64 | return number_of_references_; |
| 65 | } |
| 66 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 67 | // Link to previous SIRT or NULL |
| 68 | StackIndirectReferenceTable* Link() { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 69 | return link_; |
| 70 | } |
| 71 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 72 | Object** References() { |
| 73 | return references_; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 74 | } |
| 75 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 76 | // Offset of length within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 77 | static size_t NumberOfReferencesOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 78 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, number_of_references_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 79 | } |
| 80 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 81 | // Offset of link within SIRT, used by generated code |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 82 | static size_t LinkOffset() { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 83 | return OFFSETOF_MEMBER(StackIndirectReferenceTable, link_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | private: |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 87 | StackIndirectReferenceTable() {} |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 88 | |
| 89 | size_t number_of_references_; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 90 | StackIndirectReferenceTable* link_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 91 | |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 92 | // Fake array, really allocated and filled in by jni_compiler. |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 93 | Object* references_[0]; |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 94 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 95 | DISALLOW_COPY_AND_ASSIGN(StackIndirectReferenceTable); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 96 | }; |
| 97 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 98 | struct NativeToManagedRecord { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 99 | NativeToManagedRecord* link_; |
| 100 | void* last_top_of_managed_stack_; |
| 101 | uintptr_t last_top_of_managed_stack_pc_; |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 104 | // Iterator over managed frames up to the first native-to-managed transition |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 105 | class PACKED Frame { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 106 | public: |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 107 | Frame() : sp_(NULL) {} |
| 108 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 109 | Method* GetMethod() const { |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 110 | return (sp_ != NULL) ? *sp_ : NULL; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | bool HasNext() const { |
| 114 | return NextMethod() != NULL; |
| 115 | } |
| 116 | |
| 117 | void Next(); |
| 118 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 119 | uintptr_t GetReturnPC() const; |
| 120 | |
| 121 | uintptr_t LoadCalleeSave(int num) const; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 122 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 123 | Method** GetSP() const { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 124 | return sp_; |
| 125 | } |
| 126 | |
| 127 | // TODO: this is here for testing, remove when we have exception unit tests |
| 128 | // that use the real stack |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 129 | void SetSP(Method** sp) { |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 130 | sp_ = sp; |
| 131 | } |
| 132 | |
| 133 | private: |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 134 | Method* NextMethod() const; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 135 | |
| 136 | friend class Thread; |
| 137 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 138 | Method** sp_; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 139 | }; |
| 140 | |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 141 | class PACKED Thread { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 142 | public: |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 143 | /* thread priorities, from java.lang.Thread */ |
| 144 | enum Priority { |
| 145 | kMinPriority = 1, |
| 146 | kNormPriority = 5, |
| 147 | kMaxPriority = 10, |
| 148 | }; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 149 | enum State { |
| 150 | kUnknown = -1, |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 151 | |
| 152 | // These match up with JDWP values. |
| 153 | kTerminated = 0, // TERMINATED |
| 154 | kRunnable = 1, // RUNNABLE or running now |
| 155 | kTimedWaiting = 2, // TIMED_WAITING in Object.wait() |
| 156 | kBlocked = 3, // BLOCKED on a monitor |
| 157 | kWaiting = 4, // WAITING in Object.wait() |
| 158 | // Non-JDWP states. |
| 159 | kInitializing = 5, // allocated, not yet running --- TODO: unnecessary? |
| 160 | kStarting = 6, // native thread started, not yet ready to run managed code |
| 161 | kNative = 7, // off in a JNI native method |
| 162 | kVmWait = 8, // waiting on a VM resource |
| 163 | kSuspended = 9, // suspended, usually by GC or debugger |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 164 | }; |
| 165 | |
buzbee | cefd187 | 2011-09-09 09:59:52 -0700 | [diff] [blame] | 166 | static const size_t kStackOverflowReservedBytes = 1024; // Space to throw a StackOverflowError in. |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 167 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 168 | static const size_t kDefaultStackSize = 64 * KB; |
| 169 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 170 | // Runtime support function pointers |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 171 | void (*pDebugMe)(Method*, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 172 | void* (*pMemcpy)(void*, const void*, size_t); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 173 | uint64_t (*pShlLong)(uint64_t, uint32_t); |
| 174 | uint64_t (*pShrLong)(uint64_t, uint32_t); |
| 175 | uint64_t (*pUshrLong)(uint64_t, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 176 | float (*pI2f)(int); |
| 177 | int (*pF2iz)(float); |
| 178 | float (*pD2f)(double); |
| 179 | double (*pF2d)(float); |
| 180 | double (*pI2d)(int); |
| 181 | int (*pD2iz)(double); |
| 182 | float (*pL2f)(long); |
| 183 | double (*pL2d)(long); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 184 | long long (*pF2l)(float); |
| 185 | long long (*pD2l)(double); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 186 | float (*pFadd)(float, float); |
| 187 | float (*pFsub)(float, float); |
| 188 | float (*pFdiv)(float, float); |
| 189 | float (*pFmul)(float, float); |
| 190 | float (*pFmodf)(float, float); |
| 191 | double (*pDadd)(double, double); |
| 192 | double (*pDsub)(double, double); |
| 193 | double (*pDdiv)(double, double); |
| 194 | double (*pDmul)(double, double); |
| 195 | double (*pFmod)(double, double); |
| 196 | int (*pIdivmod)(int, int); |
| 197 | int (*pIdiv)(int, int); |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 198 | long long (*pLmul)(long long, long long); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 199 | long long (*pLdivmod)(long long, long long); |
buzbee | dfd3d70 | 2011-08-28 12:56:51 -0700 | [diff] [blame] | 200 | Array* (*pAllocFromCode)(uint32_t, Method*, int32_t); |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 201 | Array* (*pCheckAndAllocFromCode)(uint32_t, Method*, int32_t); |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 202 | Object* (*pAllocObjectFromCode)(uint32_t, Method*); |
buzbee | e193174 | 2011-08-28 21:15:53 -0700 | [diff] [blame] | 203 | uint32_t (*pGet32Static)(uint32_t, const Method*); |
| 204 | void (*pSet32Static)(uint32_t, const Method*, uint32_t); |
| 205 | uint64_t (*pGet64Static)(uint32_t, const Method*); |
| 206 | void (*pSet64Static)(uint32_t, const Method*, uint64_t); |
| 207 | Object* (*pGetObjStatic)(uint32_t, const Method*); |
| 208 | void (*pSetObjStatic)(uint32_t, const Method*, Object*); |
buzbee | 9a195c9 | 2011-09-16 13:26:02 -0700 | [diff] [blame] | 209 | void (*pCanPutArrayElementFromCode)(const Object*, const Class*); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 210 | bool (*pInstanceofNonTrivialFromCode) (const Object*, const Class*); |
| 211 | void (*pCheckCastFromCode) (const Class*, const Class*); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 212 | Method* (*pFindInterfaceMethodInCache)(Class*, uint32_t, const Method*, struct DvmDex*); |
buzbee | 2a475e7 | 2011-09-07 17:19:17 -0700 | [diff] [blame] | 213 | void (*pUnlockObjectFromCode)(Thread*, Object*); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 214 | void (*pLockObjectFromCode)(Thread*, Object*); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 215 | void (*pThrowException)(void*); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 216 | void (*pHandleFillArrayDataFromCode)(Array*, const uint16_t*); |
| 217 | Class* (*pInitializeTypeFromCode)(uint32_t, Method*); |
buzbee | 561227c | 2011-09-02 15:28:19 -0700 | [diff] [blame] | 218 | void (*pResolveMethodFromCode)(Method*, uint32_t); |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 219 | void (*pInvokeInterfaceTrampoline)(void*, void*, void*, void*); |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 220 | StaticStorageBase* (*pInitializeStaticStorage)(uint32_t, const Method*); |
buzbee | 34cd9e5 | 2011-09-08 14:31:52 -0700 | [diff] [blame] | 221 | Field* (*pFindFieldFromCode)(uint32_t, const Method*); |
buzbee | 0d966cf | 2011-09-08 17:34:58 -0700 | [diff] [blame] | 222 | void (*pCheckSuspendFromCode)(Thread*); |
buzbee | cefd187 | 2011-09-09 09:59:52 -0700 | [diff] [blame] | 223 | void (*pStackOverflowFromCode)(Method*); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 224 | void (*pThrowNullPointerFromCode)(); |
| 225 | void (*pThrowArrayBoundsFromCode)(int32_t, int32_t); |
| 226 | void (*pThrowDivZeroFromCode)(); |
| 227 | void (*pThrowVerificationErrorFromCode)(int32_t, int32_t); |
| 228 | void (*pThrowNegArraySizeFromCode)(int32_t); |
| 229 | void (*pThrowRuntimeExceptionFromCode)(int32_t); |
| 230 | void (*pThrowInternalErrorFromCode)(int32_t); |
| 231 | void (*pThrowNoSuchMethodFromCode)(int32_t); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 232 | void (*pThrowAbstractMethodErrorFromCode)(Method* method, Thread* thread); |
Brian Carlstrom | 1619286 | 2011-09-12 17:50:06 -0700 | [diff] [blame] | 233 | void* (*pFindNativeMethod)(Thread* thread); |
| 234 | Object* (*pDecodeJObjectInThread)(Thread* thread, jobject obj); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 235 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 236 | class StackVisitor { |
| 237 | public: |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 238 | virtual ~StackVisitor() {} |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 239 | virtual void VisitFrame(const Frame& frame, uintptr_t pc) = 0; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 240 | }; |
| 241 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 242 | // Creates a new thread. |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 243 | static void Create(Object* peer, size_t stack_size); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 244 | |
| 245 | // Creates a new thread from the calling thread. |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 246 | static Thread* Attach(const Runtime* runtime, const char* name, bool as_daemon); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 247 | |
| 248 | static Thread* Current() { |
Carl Shapiro | d0e7e77 | 2011-07-15 14:31:01 -0700 | [diff] [blame] | 249 | void* thread = pthread_getspecific(Thread::pthread_key_self_); |
| 250 | return reinterpret_cast<Thread*>(thread); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 251 | } |
| 252 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 253 | static Thread* FromManagedThread(JNIEnv* env, jobject thread) { |
| 254 | // TODO: make these more generally available, and cached. |
| 255 | jclass java_lang_Thread = env->FindClass("java/lang/Thread"); |
| 256 | jfieldID fid = env->GetFieldID(java_lang_Thread, "vmData", "I"); |
| 257 | return reinterpret_cast<Thread*>(static_cast<uintptr_t>(env->GetIntField(thread, fid))); |
| 258 | } |
| 259 | |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 260 | void Dump(std::ostream& os) const; |
| 261 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 262 | State GetState() const { |
| 263 | return state_; |
| 264 | } |
| 265 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 266 | State SetState(State new_state); |
| 267 | |
| 268 | void WaitUntilSuspended(); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 269 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 270 | bool HoldsLock(Object*); |
| 271 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 272 | /* |
| 273 | * Changes the priority of this thread to match that of the java.lang.Thread object. |
| 274 | * |
| 275 | * We map a priority value from 1-10 to Linux "nice" values, where lower |
| 276 | * numbers indicate higher priority. |
| 277 | */ |
| 278 | void SetNativePriority(int newPriority); |
| 279 | |
| 280 | /* |
| 281 | * Returns the thread priority for the current thread by querying the system. |
| 282 | * This is useful when attaching a thread through JNI. |
| 283 | * |
| 284 | * Returns a value from 1 to 10 (compatible with java.lang.Thread values). |
| 285 | */ |
| 286 | static int GetNativePriority(); |
| 287 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 288 | bool CanAccessDirectReferences() const { |
Elliott Hughes | a59d179 | 2011-09-04 18:42:35 -0700 | [diff] [blame] | 289 | // TODO: when we have a moving collector, we'll need: return state_ == kRunnable; |
| 290 | return true; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 291 | } |
| 292 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 293 | uint32_t GetThinLockId() const { |
| 294 | return thin_lock_id_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 297 | pid_t GetTid() const { |
| 298 | return tid_; |
| 299 | } |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 300 | |
| 301 | pthread_t GetImpl() const { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 302 | return pthread_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 303 | } |
| 304 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 305 | Object* GetPeer() const { |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 306 | return peer_; |
| 307 | } |
| 308 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 309 | // Returns the Method* for the current method. |
| 310 | // This is used by the JNI implementation for logging and diagnostic purposes. |
| 311 | const Method* GetCurrentMethod() const { |
| 312 | return top_of_managed_stack_.GetMethod(); |
| 313 | } |
| 314 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 315 | bool IsExceptionPending() const { |
Elliott Hughes | b20a554 | 2011-08-12 18:03:12 -0700 | [diff] [blame] | 316 | return exception_ != NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 317 | } |
| 318 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 319 | Throwable* GetException() const { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 320 | DCHECK(CanAccessDirectReferences()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 321 | return exception_; |
| 322 | } |
| 323 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 324 | void SetException(Throwable* new_exception) { |
| 325 | DCHECK(CanAccessDirectReferences()); |
| 326 | CHECK(new_exception != NULL); |
| 327 | // TODO: CHECK(exception_ == NULL); |
| 328 | exception_ = new_exception; // TODO |
| 329 | } |
| 330 | |
| 331 | void ClearException() { |
| 332 | exception_ = NULL; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 333 | } |
| 334 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 335 | // Find catch block and perform long jump to appropriate exception handle |
| 336 | void DeliverException(Throwable* exception); |
| 337 | |
| 338 | Context* GetLongJumpContext(); |
| 339 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 340 | Frame GetTopOfStack() const { |
| 341 | return top_of_managed_stack_; |
| 342 | } |
| 343 | |
| 344 | // TODO: this is here for testing, remove when we have exception unit tests |
| 345 | // that use the real stack |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 346 | void SetTopOfStack(void* stack, uintptr_t pc) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 347 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(stack)); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 348 | top_of_managed_stack_pc_ = pc; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 349 | } |
| 350 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 351 | void SetTopOfStackPC(uintptr_t pc) { |
| 352 | top_of_managed_stack_pc_ = pc; |
| 353 | } |
| 354 | |
| 355 | // Returns a special method that describes all callee saves being spilt to the |
| 356 | // stack. |
| 357 | Method* CalleeSaveMethod() const; |
| 358 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 359 | void ThrowNewException(const char* exception_class_descriptor, const char* fmt, ...) |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 360 | __attribute__ ((format(printf, 3, 4))); |
| 361 | |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 362 | // This exception is special, because we need to pre-allocate an instance. |
| 363 | void ThrowOutOfMemoryError(); |
| 364 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 365 | Frame FindExceptionHandler(void* throw_pc, void** handler_pc); |
| 366 | |
| 367 | void* FindExceptionHandlerInMethod(const Method* method, |
| 368 | void* throw_pc, |
| 369 | const DexFile& dex_file, |
| 370 | ClassLinker* class_linker); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 371 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 372 | void SetName(const char* name); |
| 373 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 374 | static void Startup(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 375 | static void Shutdown(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 376 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 377 | // JNI methods |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 378 | JNIEnvExt* GetJniEnv() const { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 379 | return jni_env_; |
| 380 | } |
| 381 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 382 | // Number of references allocated in SIRTs on this thread |
| 383 | size_t NumSirtReferences(); |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 384 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 385 | // Is the given obj in this thread's stack indirect reference table? |
| 386 | bool SirtContains(jobject obj); |
| 387 | |
| 388 | // Convert a jobject into a Object* |
| 389 | Object* DecodeJObject(jobject obj); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 390 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 391 | // Implements java.lang.Thread.interrupted. |
| 392 | bool Interrupted() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 393 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 394 | bool interrupted = interrupted_; |
| 395 | interrupted_ = false; |
| 396 | return interrupted; |
| 397 | } |
| 398 | |
| 399 | // Implements java.lang.Thread.isInterrupted. |
| 400 | bool IsInterrupted() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 401 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 402 | return interrupted_; |
| 403 | } |
| 404 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 405 | void Interrupt() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 406 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 407 | if (interrupted_) { |
| 408 | return; |
| 409 | } |
| 410 | interrupted_ = true; |
| 411 | NotifyLocked(); |
| 412 | } |
| 413 | |
| 414 | void Notify() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 415 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 416 | NotifyLocked(); |
| 417 | } |
| 418 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 419 | void RegisterExceptionEntryPoint(void (*handler)(Method**)) { |
| 420 | exception_entry_point_ = handler; |
| 421 | } |
| 422 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 423 | void RegisterSuspendCountEntryPoint(void (*handler)(Method**)) { |
| 424 | suspend_count_entry_point_ = handler; |
| 425 | } |
| 426 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 427 | // Linked list recording transitions from native to managed code |
| 428 | void PushNativeToManagedRecord(NativeToManagedRecord* record) { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 429 | record->last_top_of_managed_stack_ = reinterpret_cast<void*>(top_of_managed_stack_.GetSP()); |
| 430 | record->last_top_of_managed_stack_pc_ = top_of_managed_stack_pc_; |
| 431 | record->link_ = native_to_managed_record_; |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 432 | native_to_managed_record_ = record; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 433 | top_of_managed_stack_.SetSP(NULL); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 434 | } |
| 435 | void PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 436 | native_to_managed_record_ = record.link_; |
| 437 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(record.last_top_of_managed_stack_)); |
| 438 | top_of_managed_stack_pc_ = record.last_top_of_managed_stack_pc_; |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 439 | } |
| 440 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 441 | const ClassLoader* GetClassLoaderOverride() { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 442 | // TODO: need to place the class_loader_override_ in a handle |
| 443 | // DCHECK(CanAccessDirectReferences()); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 444 | return class_loader_override_; |
| 445 | } |
| 446 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 447 | void SetClassLoaderOverride(const ClassLoader* class_loader_override) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 448 | class_loader_override_ = class_loader_override; |
| 449 | } |
| 450 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 451 | // Create the internal representation of a stack trace, that is more time |
| 452 | // and space efficient to compute than the StackTraceElement[] |
| 453 | jobject CreateInternalStackTrace() const; |
| 454 | |
| 455 | // Convert an internal stack trace representation to a StackTraceElement[] |
| 456 | static jobjectArray |
| 457 | InternalStackTraceToStackTraceElementArray(jobject internal, JNIEnv* env); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 458 | |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 459 | void VisitRoots(Heap::RootVisitor* visitor, void* arg) const; |
| 460 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 461 | // |
| 462 | // Offsets of various members of native Thread class, used by compiled code. |
| 463 | // |
| 464 | |
| 465 | static ThreadOffset SelfOffset() { |
| 466 | return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); |
| 467 | } |
| 468 | |
| 469 | static ThreadOffset ExceptionOffset() { |
| 470 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); |
| 471 | } |
| 472 | |
Elliott Hughes | 54e7df1 | 2011-09-16 11:47:04 -0700 | [diff] [blame] | 473 | static ThreadOffset ThinLockIdOffset() { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 474 | return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); |
| 475 | } |
| 476 | |
| 477 | static ThreadOffset CardTableOffset() { |
| 478 | return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); |
| 479 | } |
| 480 | |
| 481 | static ThreadOffset SuspendCountOffset() { |
| 482 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); |
| 483 | } |
| 484 | |
| 485 | static ThreadOffset StateOffset() { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 486 | return ThreadOffset(OFFSETOF_VOLATILE_MEMBER(Thread, state_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 487 | } |
| 488 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 489 | static ThreadOffset StackEndOffset() { |
| 490 | return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | static ThreadOffset JniEnvOffset() { |
| 494 | return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); |
| 495 | } |
| 496 | |
| 497 | static ThreadOffset TopOfManagedStackOffset() { |
| 498 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_) + |
| 499 | OFFSETOF_MEMBER(Frame, sp_)); |
| 500 | } |
| 501 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 502 | static ThreadOffset TopOfManagedStackPcOffset() { |
| 503 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_pc_)); |
| 504 | } |
| 505 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 506 | static ThreadOffset TopSirtOffset() { |
| 507 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); |
| 508 | } |
| 509 | |
| 510 | static ThreadOffset ExceptionEntryPointOffset() { |
| 511 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_entry_point_)); |
| 512 | } |
| 513 | |
| 514 | static ThreadOffset SuspendCountEntryPointOffset() { |
| 515 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_entry_point_)); |
| 516 | } |
| 517 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 518 | private: |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 519 | Thread(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 520 | ~Thread(); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 521 | friend class ThreadList; // For ~Thread. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 522 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 523 | void CreatePeer(const char* name, bool as_daemon); |
| 524 | friend class Runtime; // For CreatePeer. |
| 525 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 526 | void DumpState(std::ostream& os) const; |
| 527 | void DumpStack(std::ostream& os) const; |
| 528 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 529 | void Attach(const Runtime* runtime); |
| 530 | static void* CreateCallback(void* arg); |
| 531 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 532 | void InitCpu(); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 533 | void InitFunctionPointers(); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 534 | void InitStackHwm(); |
| 535 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 536 | void NotifyLocked() { |
| 537 | if (wait_monitor_ != NULL) { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 538 | wait_cond_->Signal(); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 539 | } |
| 540 | } |
| 541 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 542 | static void ThreadExitCallback(void* arg); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 543 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 544 | void WalkStack(StackVisitor* visitor) const; |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 545 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 546 | void WalkStackUntilUpCall(StackVisitor* visitor) const; |
| 547 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 548 | // Thin lock thread id. This is a small integer used by the thin lock implementation. |
| 549 | // This is not to be confused with the native thread's tid, nor is it the value returned |
| 550 | // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One |
| 551 | // important difference between this id and the ids visible to managed code is that these |
| 552 | // ones get reused (to ensure that they fit in the number of bits available). |
| 553 | uint32_t thin_lock_id_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 554 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 555 | // System thread id. |
| 556 | pid_t tid_; |
| 557 | |
| 558 | // Native thread handle. |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 559 | pthread_t pthread_; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 560 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 561 | // Our managed peer (an instance of java.lang.Thread). |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 562 | Object* peer_; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 563 | |
| 564 | // Guards the 'interrupted_' and 'wait_monitor_' members. |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 565 | mutable Mutex* wait_mutex_; |
| 566 | ConditionVariable* wait_cond_; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 567 | // Pointer to the monitor lock we're currently waiting on (or NULL), guarded by wait_mutex_. |
| 568 | Monitor* wait_monitor_; |
| 569 | // Thread "interrupted" status; stays raised until queried or thrown, guarded by wait_mutex_. |
| 570 | bool interrupted_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 571 | // The next thread in the wait set this thread is part of. |
| 572 | Thread* wait_next_; |
| 573 | |
| 574 | friend class Monitor; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 575 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 576 | // FIXME: placeholder for the gc cardTable |
| 577 | uint32_t card_table_; |
| 578 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 579 | // The end of this thread's stack. This is the lowest safely-addressable address on the stack. |
| 580 | // We leave extra space so there's room for the code that throws StackOverflowError. |
| 581 | byte* stack_end_; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 582 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 583 | // Top of the managed stack, written out prior to the state transition from |
| 584 | // kRunnable to kNative. Uses include to give the starting point for scanning |
| 585 | // a managed stack when a thread is in native code. |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 586 | Frame top_of_managed_stack_; |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 587 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 588 | // PC corresponding to the call out of the top_of_managed_stack_ frame |
| 589 | uintptr_t top_of_managed_stack_pc_; |
| 590 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 591 | // A linked list (of stack allocated records) recording transitions from |
| 592 | // native to managed code. |
| 593 | NativeToManagedRecord* native_to_managed_record_; |
| 594 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 595 | // Top of linked list of stack indirect reference tables or NULL for none |
| 596 | StackIndirectReferenceTable* top_sirt_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 597 | |
| 598 | // Every thread may have an associated JNI environment |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 599 | JNIEnvExt* jni_env_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 600 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 601 | volatile State state_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 602 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 603 | // Initialized to "this". On certain architectures (such as x86) reading |
| 604 | // off of Thread::Current is easy but getting the address of Thread::Current |
| 605 | // is hard. This field can be read off of Thread::Current to give the address. |
| 606 | Thread* self_; |
| 607 | |
| 608 | Runtime* runtime_; |
| 609 | |
| 610 | // The pending exception or NULL. |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 611 | Throwable* exception_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 612 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 613 | // A non-zero value is used to tell the current thread to enter a safe point |
| 614 | // at the next poll. |
| 615 | int suspend_count_; |
| 616 | |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 617 | // Needed to get the right ClassLoader in JNI_OnLoad, but also |
| 618 | // useful for testing. |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 619 | const ClassLoader* class_loader_override_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 620 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 621 | // Thread local, lazily allocated, long jump context. Used to deliver exceptions. |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 622 | Context* long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 623 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 624 | // TLS key used to retrieve the VM thread object. |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 625 | static pthread_key_t pthread_key_self_; |
| 626 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 627 | // Entry point called when exception_ is set |
| 628 | void (*exception_entry_point_)(Method** frame); |
| 629 | |
| 630 | // Entry point called when suspend_count_ is non-zero |
| 631 | void (*suspend_count_entry_point_)(Method** frame); |
| 632 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 633 | DISALLOW_COPY_AND_ASSIGN(Thread); |
| 634 | }; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 635 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 636 | std::ostream& operator<<(std::ostream& os, const Thread& thread); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 637 | std::ostream& operator<<(std::ostream& os, const Thread::State& state); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 638 | |
Elliott Hughes | ad7c2a3 | 2011-08-31 11:58:10 -0700 | [diff] [blame] | 639 | class ScopedThreadStateChange { |
| 640 | public: |
| 641 | ScopedThreadStateChange(Thread* thread, Thread::State new_state) : thread_(thread) { |
| 642 | old_thread_state_ = thread_->SetState(new_state); |
| 643 | } |
| 644 | |
| 645 | ~ScopedThreadStateChange() { |
| 646 | thread_->SetState(old_thread_state_); |
| 647 | } |
| 648 | |
| 649 | private: |
| 650 | Thread* thread_; |
| 651 | Thread::State old_thread_state_; |
| 652 | DISALLOW_COPY_AND_ASSIGN(ScopedThreadStateChange); |
| 653 | }; |
| 654 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 655 | } // namespace art |
| 656 | |
| 657 | #endif // ART_SRC_THREAD_H_ |