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" |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 35 | #include "runtime_stats.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 36 | #include "stack.h" |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 37 | #include "UniquePtr.h" |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 38 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 39 | namespace art { |
| 40 | |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 41 | class Array; |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 42 | class Class; |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 43 | class ClassLinker; |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 44 | class ClassLoader; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 45 | class Context; |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 46 | class DebugInvokeReq; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 47 | class Method; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 48 | class Monitor; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 49 | class Object; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 50 | class Runtime; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 51 | class StackIndirectReferenceTable; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 52 | class StackTraceElement; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 53 | class StaticStorageBase; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 54 | class Thread; |
| 55 | class ThreadList; |
| 56 | class Throwable; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 57 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 58 | template<class T> class ObjectArray; |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 59 | template<class T> class PrimitiveArray; |
| 60 | typedef PrimitiveArray<int32_t> IntArray; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 61 | |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 62 | class PACKED Thread { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 63 | public: |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 64 | /* thread priorities, from java.lang.Thread */ |
| 65 | enum Priority { |
| 66 | kMinPriority = 1, |
| 67 | kNormPriority = 5, |
| 68 | kMaxPriority = 10, |
| 69 | }; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 70 | enum State { |
Elliott Hughes | 499c513 | 2011-11-17 14:55:11 -0800 | [diff] [blame] | 71 | // These correspond to JDWP states (but needn't share the same values). |
| 72 | kTerminated = 0, // TS_ZOMBIE |
| 73 | kRunnable = 1, // TS_RUNNING |
| 74 | kTimedWaiting = 2, // TS_SLEEPING in Object.wait() |
| 75 | kBlocked = 3, // TS_MONITOR on a monitor |
| 76 | kWaiting = 4, // TS_WAIT in Object.wait() |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 77 | // Non-JDWP states. |
| 78 | kInitializing = 5, // allocated, not yet running --- TODO: unnecessary? |
| 79 | kStarting = 6, // native thread started, not yet ready to run managed code |
| 80 | kNative = 7, // off in a JNI native method |
| 81 | kVmWait = 8, // waiting on a VM resource |
| 82 | kSuspended = 9, // suspended, usually by GC or debugger |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 83 | }; |
| 84 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 85 | // Space to throw a StackOverflowError in. |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 86 | static const size_t kStackOverflowReservedBytes = 4 * KB; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 87 | |
Brian Carlstrom | 72db0d7 | 2011-11-10 17:58:56 -0800 | [diff] [blame] | 88 | static const size_t kDefaultStackSize = 96 * KB; |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 89 | |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 90 | // Runtime support function pointers |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 91 | void (*pDebugMe)(Method*, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 92 | void* (*pMemcpy)(void*, const void*, size_t); |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 93 | uint64_t (*pShlLong)(uint64_t, uint32_t); |
| 94 | uint64_t (*pShrLong)(uint64_t, uint32_t); |
| 95 | uint64_t (*pUshrLong)(uint64_t, uint32_t); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 96 | float (*pI2f)(int); |
| 97 | int (*pF2iz)(float); |
| 98 | float (*pD2f)(double); |
| 99 | double (*pF2d)(float); |
| 100 | double (*pI2d)(int); |
| 101 | int (*pD2iz)(double); |
| 102 | float (*pL2f)(long); |
| 103 | double (*pL2d)(long); |
buzbee | 1b4c859 | 2011-08-31 10:43:51 -0700 | [diff] [blame] | 104 | long long (*pF2l)(float); |
| 105 | long long (*pD2l)(double); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 106 | float (*pFadd)(float, float); |
| 107 | float (*pFsub)(float, float); |
| 108 | float (*pFdiv)(float, float); |
| 109 | float (*pFmul)(float, float); |
| 110 | float (*pFmodf)(float, float); |
| 111 | double (*pDadd)(double, double); |
| 112 | double (*pDsub)(double, double); |
| 113 | double (*pDdiv)(double, double); |
| 114 | double (*pDmul)(double, double); |
| 115 | double (*pFmod)(double, double); |
| 116 | int (*pIdivmod)(int, int); |
| 117 | int (*pIdiv)(int, int); |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 118 | long long (*pLmul)(long long, long long); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 119 | long long (*pLdivmod)(long long, long long); |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 120 | void (*pCheckSuspendFromCode)(Thread*); // Stub that is called when the suspend count is non-zero |
| 121 | void (*pTestSuspendFromCode)(); // Stub that is periodically called to test the suspend count |
Ian Rogers | 21d9e83 | 2011-09-23 17:05:09 -0700 | [diff] [blame] | 122 | void* (*pAllocObjectFromCode)(uint32_t, void*); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 123 | void* (*pAllocObjectFromCodeWithAccessCheck)(uint32_t, void*); |
Elliott Hughes | b408de7 | 2011-10-04 14:35:05 -0700 | [diff] [blame] | 124 | void* (*pAllocArrayFromCode)(uint32_t, void*, int32_t); |
Ian Rogers | e51a511 | 2011-09-23 14:16:35 -0700 | [diff] [blame] | 125 | void (*pCanPutArrayElementFromCode)(void*, void*); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 126 | void* (*pCheckAndAllocArrayFromCode)(uint32_t, void*, int32_t); |
Elliott Hughes | 362f9bc | 2011-10-17 18:56:41 -0700 | [diff] [blame] | 127 | void (*pCheckCastFromCode)(void*, void*); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 128 | Object* (*pDecodeJObjectInThread)(Thread* thread, jobject obj); |
| 129 | void (*pDeliverException)(void*); |
| 130 | void* (*pFindInstanceFieldFromCode)(uint32_t, void*); |
| 131 | Method* (*pFindInterfaceMethodInCache)(Class*, uint32_t, const Method*, struct DvmDex*); |
| 132 | void* (*pFindNativeMethod)(Thread* thread); |
| 133 | int32_t (*pGet32Static)(uint32_t, void*); |
| 134 | int64_t (*pGet64Static)(uint32_t, void*); |
| 135 | void* (*pGetObjStatic)(uint32_t, void*); |
| 136 | void (*pHandleFillArrayDataFromCode)(void*, void*); |
| 137 | void* (*pInitializeStaticStorage)(uint32_t, void*); |
Elliott Hughes | 362f9bc | 2011-10-17 18:56:41 -0700 | [diff] [blame] | 138 | uint32_t (*pInstanceofNonTrivialFromCode)(const Class*, const Class*); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 139 | void (*pInvokeInterfaceTrampoline)(uint32_t, void*); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 140 | void* (*pInitializeTypeFromCode)(uint32_t, void*); |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 141 | void* (*pInitializeTypeAndVerifyAccessFromCode)(uint32_t, void*); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 142 | void (*pLockObjectFromCode)(void*); |
Brian Carlstrom | 6fd03fb | 2011-10-17 16:11:00 -0700 | [diff] [blame] | 143 | void (*pObjectInit)(void*); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 144 | void (*pResolveMethodFromCode)(Method*, uint32_t); |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 145 | void* (*pResolveStringFromCode)(void*, uint32_t); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 146 | int (*pSet32Static)(uint32_t, void*, int32_t); |
| 147 | int (*pSet64Static)(uint32_t, void*, int64_t); |
| 148 | int (*pSetObjStatic)(uint32_t, void*, void*); |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 149 | void (*pThrowStackOverflowFromCode)(void*); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 150 | void (*pThrowNullPointerFromCode)(); |
| 151 | void (*pThrowArrayBoundsFromCode)(int32_t, int32_t); |
| 152 | void (*pThrowDivZeroFromCode)(); |
| 153 | void (*pThrowVerificationErrorFromCode)(int32_t, int32_t); |
| 154 | void (*pThrowNegArraySizeFromCode)(int32_t); |
buzbee | 5ade1d2 | 2011-09-09 14:44:52 -0700 | [diff] [blame] | 155 | void (*pThrowNoSuchMethodFromCode)(int32_t); |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 156 | void (*pThrowAbstractMethodErrorFromCode)(Method* method, Thread* thread, Method** sp); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 157 | void (*pUnlockObjectFromCode)(void*); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 158 | void* (*pUnresolvedDirectMethodTrampolineFromCode)(int32_t, Method**, Thread*, |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 159 | Runtime::TrampolineType); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 160 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 161 | class StackVisitor { |
| 162 | public: |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 163 | virtual ~StackVisitor() {} |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 164 | virtual void VisitFrame(const Frame& frame, uintptr_t pc) = 0; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 165 | }; |
| 166 | |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 167 | // Creates a new thread. |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 168 | static void Create(Object* peer, size_t stack_size); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 169 | |
| 170 | // Creates a new thread from the calling thread. |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 171 | static Thread* Attach(const Runtime* runtime, const char* name, bool as_daemon); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 172 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 173 | // Reset internal state of child thread after fork. |
| 174 | void InitAfterFork(); |
| 175 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 176 | static Thread* Current() { |
Carl Shapiro | d0e7e77 | 2011-07-15 14:31:01 -0700 | [diff] [blame] | 177 | void* thread = pthread_getspecific(Thread::pthread_key_self_); |
| 178 | return reinterpret_cast<Thread*>(thread); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 179 | } |
| 180 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 181 | static Thread* FromManagedThread(Object* thread_peer); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 182 | static Thread* FromManagedThread(JNIEnv* env, jobject thread); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 183 | static uint32_t LockOwnerFromThreadLock(Object* thread_lock); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 184 | |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 185 | void Dump(std::ostream& os, bool dump_pending_exception = false) const; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 186 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 187 | State GetState() const { |
| 188 | return state_; |
| 189 | } |
| 190 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 191 | State SetState(State new_state); |
| 192 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 193 | bool IsDaemon(); |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 194 | bool IsSuspended(); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 195 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 196 | void WaitUntilSuspended(); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 197 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 198 | bool HoldsLock(Object*); |
| 199 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 200 | /* |
| 201 | * Changes the priority of this thread to match that of the java.lang.Thread object. |
| 202 | * |
| 203 | * We map a priority value from 1-10 to Linux "nice" values, where lower |
| 204 | * numbers indicate higher priority. |
| 205 | */ |
| 206 | void SetNativePriority(int newPriority); |
| 207 | |
| 208 | /* |
| 209 | * Returns the thread priority for the current thread by querying the system. |
| 210 | * This is useful when attaching a thread through JNI. |
| 211 | * |
| 212 | * Returns a value from 1 to 10 (compatible with java.lang.Thread values). |
| 213 | */ |
| 214 | static int GetNativePriority(); |
| 215 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 216 | bool CanAccessDirectReferences() const { |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 217 | #ifdef MOVING_GARBAGE_COLLECTOR |
Elliott Hughes | a59d179 | 2011-09-04 18:42:35 -0700 | [diff] [blame] | 218 | // TODO: when we have a moving collector, we'll need: return state_ == kRunnable; |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 219 | #endif |
Elliott Hughes | a59d179 | 2011-09-04 18:42:35 -0700 | [diff] [blame] | 220 | return true; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 223 | uint32_t GetThinLockId() const { |
| 224 | return thin_lock_id_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 227 | pid_t GetTid() const { |
| 228 | return tid_; |
| 229 | } |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 230 | |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 231 | // Returns the java.lang.Thread's name, or NULL. |
| 232 | String* GetName() const; |
| 233 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 234 | Object* GetPeer() const { |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 235 | return peer_; |
| 236 | } |
| 237 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 238 | Object* GetThreadGroup() const; |
| 239 | |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 240 | RuntimeStats* GetStats() { |
| 241 | return &stats_; |
| 242 | } |
| 243 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 244 | // Returns the Method* for the current method. |
| 245 | // This is used by the JNI implementation for logging and diagnostic purposes. |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 246 | const Method* GetCurrentMethod() const; |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 247 | |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 248 | uint32_t GetCurrentReturnPc() const; |
| 249 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 250 | bool IsExceptionPending() const { |
Elliott Hughes | b20a554 | 2011-08-12 18:03:12 -0700 | [diff] [blame] | 251 | return exception_ != NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 252 | } |
| 253 | |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 254 | Throwable* GetException() const { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 255 | DCHECK(CanAccessDirectReferences()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 256 | return exception_; |
| 257 | } |
| 258 | |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 259 | void SetException(Throwable* new_exception) { |
| 260 | DCHECK(CanAccessDirectReferences()); |
| 261 | CHECK(new_exception != NULL); |
| 262 | // TODO: CHECK(exception_ == NULL); |
| 263 | exception_ = new_exception; // TODO |
| 264 | } |
| 265 | |
| 266 | void ClearException() { |
| 267 | exception_ = NULL; |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 270 | // Find catch block and perform long jump to appropriate exception handle |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 271 | void DeliverException(); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 272 | |
| 273 | Context* GetLongJumpContext(); |
| 274 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 275 | Frame GetTopOfStack() const { |
| 276 | return top_of_managed_stack_; |
| 277 | } |
| 278 | |
| 279 | // TODO: this is here for testing, remove when we have exception unit tests |
| 280 | // that use the real stack |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 281 | void SetTopOfStack(void* stack, uintptr_t pc) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 282 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(stack)); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 283 | top_of_managed_stack_pc_ = pc; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 286 | void SetTopOfStackPC(uintptr_t pc) { |
| 287 | top_of_managed_stack_pc_ = pc; |
| 288 | } |
| 289 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 290 | // 'msg' may be NULL. |
| 291 | void ThrowNewException(const char* exception_class_descriptor, const char* msg); |
| 292 | |
| 293 | void ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) |
Elliott Hughes | 362f9bc | 2011-10-17 18:56:41 -0700 | [diff] [blame] | 294 | __attribute__((format(printf, 3, 4))); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 295 | |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 296 | void ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap); |
| 297 | |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 298 | // OutOfMemoryError is special, because we need to pre-allocate an instance. |
| 299 | void ThrowOutOfMemoryError(const char* msg); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 300 | void ThrowOutOfMemoryError(Class* c, size_t byte_count); |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 301 | |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 302 | Frame FindExceptionHandler(void* throw_pc, void** handler_pc); |
| 303 | |
| 304 | void* FindExceptionHandlerInMethod(const Method* method, |
| 305 | void* throw_pc, |
| 306 | const DexFile& dex_file, |
| 307 | ClassLinker* class_linker); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 308 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 309 | void SetName(const char* name); |
| 310 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 311 | static void Startup(); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 312 | static void FinishStartup(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 313 | static void Shutdown(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 314 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 315 | // JNI methods |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 316 | JNIEnvExt* GetJniEnv() const { |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 317 | return jni_env_; |
| 318 | } |
| 319 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 320 | // Number of references allocated in SIRTs on this thread |
| 321 | size_t NumSirtReferences(); |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 322 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 323 | // Is the given obj in this thread's stack indirect reference table? |
| 324 | bool SirtContains(jobject obj); |
| 325 | |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 326 | void SirtVisitRoots(Heap::RootVisitor* visitor, void* arg); |
| 327 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 328 | // Convert a jobject into a Object* |
| 329 | Object* DecodeJObject(jobject obj); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 330 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 331 | // Implements java.lang.Thread.interrupted. |
| 332 | bool Interrupted() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 333 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 334 | bool interrupted = interrupted_; |
| 335 | interrupted_ = false; |
| 336 | return interrupted; |
| 337 | } |
| 338 | |
| 339 | // Implements java.lang.Thread.isInterrupted. |
| 340 | bool IsInterrupted() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 341 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 342 | return interrupted_; |
| 343 | } |
| 344 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 345 | void Interrupt() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 346 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 347 | if (interrupted_) { |
| 348 | return; |
| 349 | } |
| 350 | interrupted_ = true; |
| 351 | NotifyLocked(); |
| 352 | } |
| 353 | |
| 354 | void Notify() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 355 | MutexLock mu(*wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 356 | NotifyLocked(); |
| 357 | } |
| 358 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 359 | // Linked list recording transitions from native to managed code |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 360 | void PushNativeToManagedRecord(NativeToManagedRecord* record); |
| 361 | void PopNativeToManagedRecord(const NativeToManagedRecord& record); |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 362 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 363 | const ClassLoader* GetClassLoaderOverride() { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 364 | // TODO: need to place the class_loader_override_ in a handle |
| 365 | // DCHECK(CanAccessDirectReferences()); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 366 | return class_loader_override_; |
| 367 | } |
| 368 | |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 369 | void SetClassLoaderOverride(const ClassLoader* class_loader_override) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 370 | class_loader_override_ = class_loader_override; |
| 371 | } |
| 372 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 373 | // Create the internal representation of a stack trace, that is more time |
| 374 | // and space efficient to compute than the StackTraceElement[] |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 375 | jobject CreateInternalStackTrace(JNIEnv* env) const; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 376 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 377 | // Convert an internal stack trace representation (returned by CreateInternalStackTrace) to a |
| 378 | // StackTraceElement[]. If output_array is NULL, a new array is created, otherwise as many |
| 379 | // frames as will fit are written into the given array. If stack_depth is non-NULL, it's updated |
| 380 | // with the number of valid frames in the returned array. |
| 381 | static jobjectArray InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 382 | jobjectArray output_array = NULL, int* stack_depth = NULL); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 383 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 384 | void VisitRoots(Heap::RootVisitor* visitor, void* arg); |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 385 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 386 | // |
| 387 | // Offsets of various members of native Thread class, used by compiled code. |
| 388 | // |
| 389 | |
| 390 | static ThreadOffset SelfOffset() { |
| 391 | return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); |
| 392 | } |
| 393 | |
| 394 | static ThreadOffset ExceptionOffset() { |
| 395 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); |
| 396 | } |
| 397 | |
Elliott Hughes | 54e7df1 | 2011-09-16 11:47:04 -0700 | [diff] [blame] | 398 | static ThreadOffset ThinLockIdOffset() { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 399 | return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); |
| 400 | } |
| 401 | |
| 402 | static ThreadOffset CardTableOffset() { |
| 403 | return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); |
| 404 | } |
| 405 | |
| 406 | static ThreadOffset SuspendCountOffset() { |
| 407 | return ThreadOffset(OFFSETOF_MEMBER(Thread, suspend_count_)); |
| 408 | } |
| 409 | |
| 410 | static ThreadOffset StateOffset() { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 411 | return ThreadOffset(OFFSETOF_VOLATILE_MEMBER(Thread, state_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 412 | } |
| 413 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 414 | // Size of stack less any space reserved for stack overflow |
| 415 | size_t GetStackSize() { |
| 416 | return stack_size_ - (stack_end_ - stack_base_); |
| 417 | } |
| 418 | |
| 419 | // Set the stack end to that to be used during a stack overflow |
| 420 | void SetStackEndForStackOverflow() { |
| 421 | // During stack overflow we allow use of the full stack |
Elliott Hughes | 3b6baaa | 2011-10-14 19:13:56 -0700 | [diff] [blame] | 422 | if (stack_end_ == stack_base_) { |
| 423 | DumpStack(std::cerr); |
| 424 | LOG(FATAL) << "Need to increase kStackOverflowReservedBytes (currently " |
| 425 | << kStackOverflowReservedBytes << ")"; |
| 426 | } |
| 427 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 428 | stack_end_ = stack_base_; |
| 429 | } |
| 430 | |
| 431 | // Set the stack end to that to be used during regular execution |
| 432 | void ResetDefaultStackEnd() { |
| 433 | // Our stacks grow down, so we want stack_end_ to be near there, but reserving enough room |
| 434 | // to throw a StackOverflowError. |
| 435 | stack_end_ = stack_base_ + kStackOverflowReservedBytes; |
| 436 | } |
| 437 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 438 | static ThreadOffset StackEndOffset() { |
| 439 | return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | static ThreadOffset JniEnvOffset() { |
| 443 | return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); |
| 444 | } |
| 445 | |
| 446 | static ThreadOffset TopOfManagedStackOffset() { |
| 447 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_) + |
| 448 | OFFSETOF_MEMBER(Frame, sp_)); |
| 449 | } |
| 450 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 451 | static ThreadOffset TopOfManagedStackPcOffset() { |
| 452 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_of_managed_stack_pc_)); |
| 453 | } |
| 454 | |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 455 | void PushSirt(StackIndirectReferenceTable* sirt); |
| 456 | StackIndirectReferenceTable* PopSirt(); |
| 457 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 458 | static ThreadOffset TopSirtOffset() { |
| 459 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); |
| 460 | } |
| 461 | |
Shih-wei Liao | 9407c60 | 2011-09-16 10:36:43 -0700 | [diff] [blame] | 462 | void WalkStack(StackVisitor* visitor) const; |
| 463 | |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 464 | DebugInvokeReq* GetInvokeReq() { |
| 465 | return debug_invoke_req_; |
| 466 | } |
| 467 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 468 | private: |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 469 | Thread(); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 470 | ~Thread(); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 471 | friend class ThreadList; // For ~Thread. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 472 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 473 | void CreatePeer(const char* name, bool as_daemon); |
| 474 | friend class Runtime; // For CreatePeer. |
| 475 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 476 | void DumpState(std::ostream& os) const; |
| 477 | void DumpStack(std::ostream& os) const; |
| 478 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 479 | // Out-of-line conveniences for debugging in gdb. |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 480 | static Thread* CurrentFromGdb(); // Like Thread::Current. |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 481 | void DumpFromGdb() const; // Like Thread::Dump(std::cerr). |
| 482 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 483 | void Attach(const Runtime* runtime); |
| 484 | static void* CreateCallback(void* arg); |
| 485 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 486 | void HandleUncaughtExceptions(); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 487 | void RemoveFromThreadGroup(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 488 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 489 | void InitCardTable(); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 490 | void InitCpu(); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 491 | void InitFunctionPointers(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 492 | void InitTid(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 493 | void InitPthreadKeySelf(); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 494 | void InitStackHwm(); |
| 495 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 496 | void NotifyLocked() { |
| 497 | if (wait_monitor_ != NULL) { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 498 | wait_cond_->Signal(); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 499 | } |
| 500 | } |
| 501 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 502 | static void ThreadExitCallback(void* arg); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 503 | |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 504 | void WalkStackUntilUpCall(StackVisitor* visitor, bool include_upcall) const; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 505 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 506 | // Thin lock thread id. This is a small integer used by the thin lock implementation. |
| 507 | // This is not to be confused with the native thread's tid, nor is it the value returned |
| 508 | // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One |
| 509 | // important difference between this id and the ids visible to managed code is that these |
| 510 | // ones get reused (to ensure that they fit in the number of bits available). |
| 511 | uint32_t thin_lock_id_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 512 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 513 | // System thread id. |
| 514 | pid_t tid_; |
| 515 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 516 | // Our managed peer (an instance of java.lang.Thread). |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 517 | Object* peer_; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 518 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 519 | // The top_of_managed_stack_ and top_of_managed_stack_pc_ fields are accessed from |
| 520 | // compiled code, so we keep them early in the structure to (a) avoid having to keep |
| 521 | // fixing the assembler offsets and (b) improve the chances that these will still be aligned. |
| 522 | |
| 523 | // Top of the managed stack, written out prior to the state transition from |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 524 | // kRunnable to kNative. Uses include giving the starting point for scanning |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 525 | // a managed stack when a thread is in native code. |
| 526 | Frame top_of_managed_stack_; |
| 527 | // PC corresponding to the call out of the top_of_managed_stack_ frame |
| 528 | uintptr_t top_of_managed_stack_pc_; |
| 529 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 530 | // Guards the 'interrupted_' and 'wait_monitor_' members. |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 531 | mutable Mutex* wait_mutex_; |
| 532 | ConditionVariable* wait_cond_; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 533 | // Pointer to the monitor lock we're currently waiting on (or NULL), guarded by wait_mutex_. |
| 534 | Monitor* wait_monitor_; |
| 535 | // Thread "interrupted" status; stays raised until queried or thrown, guarded by wait_mutex_. |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 536 | uint32_t interrupted_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 537 | // The next thread in the wait set this thread is part of. |
| 538 | Thread* wait_next_; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 539 | // If we're blocked in MonitorEnter, this is the object we're trying to lock. |
| 540 | Object* monitor_enter_object_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 541 | |
| 542 | friend class Monitor; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 543 | |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 544 | RuntimeStats stats_; |
| 545 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 546 | // The biased card table, see CardTable for details |
| 547 | byte* card_table_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 548 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 549 | // The end of this thread's stack. This is the lowest safely-addressable address on the stack. |
| 550 | // We leave extra space so there's room for the code that throws StackOverflowError. |
| 551 | byte* stack_end_; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 552 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 553 | // Size of the stack |
| 554 | size_t stack_size_; |
| 555 | |
| 556 | // The "lowest addressable byte" of the stack |
| 557 | byte* stack_base_; |
| 558 | |
Ian Rogers | 6de0860 | 2011-08-19 14:52:39 -0700 | [diff] [blame] | 559 | // A linked list (of stack allocated records) recording transitions from |
| 560 | // native to managed code. |
| 561 | NativeToManagedRecord* native_to_managed_record_; |
| 562 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 563 | // Top of linked list of stack indirect reference tables or NULL for none |
| 564 | StackIndirectReferenceTable* top_sirt_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 565 | |
| 566 | // Every thread may have an associated JNI environment |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 567 | JNIEnvExt* jni_env_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 568 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 569 | volatile State state_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 570 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 571 | // Initialized to "this". On certain architectures (such as x86) reading |
| 572 | // off of Thread::Current is easy but getting the address of Thread::Current |
| 573 | // is hard. This field can be read off of Thread::Current to give the address. |
| 574 | Thread* self_; |
| 575 | |
| 576 | Runtime* runtime_; |
| 577 | |
| 578 | // The pending exception or NULL. |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 579 | Throwable* exception_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 580 | |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 581 | // A non-zero value is used to tell the current thread to enter a safe point |
| 582 | // at the next poll. |
| 583 | int suspend_count_; |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 584 | // How much of 'suspend_count_' is by request of the debugger, used to set things right |
| 585 | // when the debugger detaches. Must be <= suspend_count_. |
| 586 | int debug_suspend_count_; |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 587 | |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 588 | // Needed to get the right ClassLoader in JNI_OnLoad, but also |
| 589 | // useful for testing. |
Brian Carlstrom | bffb155 | 2011-08-25 12:23:53 -0700 | [diff] [blame] | 590 | const ClassLoader* class_loader_override_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 591 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 592 | // Thread local, lazily allocated, long jump context. Used to deliver exceptions. |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 593 | Context* long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 594 | |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 595 | // A boolean telling us whether we're recursively throwing OOME. |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 596 | uint32_t throwing_OutOfMemoryError_; |
| 597 | |
| 598 | Throwable* pre_allocated_OutOfMemoryError_; |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 599 | |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 600 | // JDWP invoke-during-breakpoint support. |
| 601 | DebugInvokeReq* debug_invoke_req_; |
| 602 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 603 | // TLS key used to retrieve the VM thread object. |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 604 | static pthread_key_t pthread_key_self_; |
| 605 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 606 | DISALLOW_COPY_AND_ASSIGN(Thread); |
| 607 | }; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 608 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 609 | std::ostream& operator<<(std::ostream& os, const Thread& thread); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 610 | std::ostream& operator<<(std::ostream& os, const Thread::State& state); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 611 | |
Elliott Hughes | ad7c2a3 | 2011-08-31 11:58:10 -0700 | [diff] [blame] | 612 | class ScopedThreadStateChange { |
| 613 | public: |
| 614 | ScopedThreadStateChange(Thread* thread, Thread::State new_state) : thread_(thread) { |
| 615 | old_thread_state_ = thread_->SetState(new_state); |
| 616 | } |
| 617 | |
| 618 | ~ScopedThreadStateChange() { |
| 619 | thread_->SetState(old_thread_state_); |
| 620 | } |
| 621 | |
| 622 | private: |
| 623 | Thread* thread_; |
| 624 | Thread::State old_thread_state_; |
| 625 | DISALLOW_COPY_AND_ASSIGN(ScopedThreadStateChange); |
| 626 | }; |
| 627 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 628 | } // namespace art |
| 629 | |
| 630 | #endif // ART_SRC_THREAD_H_ |