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> |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 26 | #include <vector> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 27 | |
Mathieu Chartier | 0e4627e | 2012-10-23 16:13:36 -0700 | [diff] [blame] | 28 | #include "closure.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 29 | #include "globals.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 30 | #include "macros.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 31 | #include "oat/runtime/oat_support_entrypoints.h" |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 32 | #include "locks.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 33 | #include "offsets.h" |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 34 | #include "runtime_stats.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 35 | #include "stack.h" |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 36 | #include "stack_indirect_reference_table.h" |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 37 | #include "trace.h" |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 38 | #include "UniquePtr.h" |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 39 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 40 | namespace art { |
| 41 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 42 | class AbstractMethod; |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 43 | class Array; |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 44 | class BaseMutex; |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 45 | class Class; |
Brian Carlstrom | 1f87008 | 2011-08-23 16:02:11 -0700 | [diff] [blame] | 46 | class ClassLinker; |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 47 | class ClassLoader; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 48 | class Context; |
Ian Rogers | 1b09b09 | 2012-08-20 15:35:52 -0700 | [diff] [blame] | 49 | struct DebugInvokeReq; |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 50 | class DexFile; |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 51 | struct JavaVMExt; |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 52 | struct JNIEnvExt; |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 53 | class Monitor; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 54 | class Object; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 55 | class Runtime; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 56 | class ScopedObjectAccess; |
| 57 | class ScopedObjectAccessUnchecked; |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 58 | class ShadowFrame; |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 59 | class StackIndirectReferenceTable; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 60 | class StackTraceElement; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 61 | class StaticStorageBase; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 62 | class Thread; |
| 63 | class ThreadList; |
| 64 | class Throwable; |
buzbee | 1da522d | 2011-09-04 11:22:20 -0700 | [diff] [blame] | 65 | |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 66 | template<class T> class ObjectArray; |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 67 | template<class T> class PrimitiveArray; |
| 68 | typedef PrimitiveArray<int32_t> IntArray; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 69 | |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 70 | // Thread priorities. These must match the Thread.MIN_PRIORITY, |
| 71 | // Thread.NORM_PRIORITY, and Thread.MAX_PRIORITY constants. |
| 72 | enum ThreadPriority { |
| 73 | kMinThreadPriority = 1, |
| 74 | kNormThreadPriority = 5, |
| 75 | kMaxThreadPriority = 10, |
| 76 | }; |
| 77 | |
| 78 | enum ThreadState { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 79 | kTerminated = 0, // Thread.TERMINATED JDWP TS_ZOMBIE |
| 80 | kRunnable = 1, // Thread.RUNNABLE JDWP TS_RUNNING |
| 81 | kTimedWaiting = 2, // Thread.TIMED_WAITING JDWP TS_WAIT - in Object.wait() with a timeout |
| 82 | kBlocked = 3, // Thread.BLOCKED JDWP TS_MONITOR - blocked on a monitor |
| 83 | kWaiting = 4, // Thread.WAITING JDWP TS_WAIT - in Object.wait() |
| 84 | kWaitingForGcToComplete = 5, // Thread.WAITING JDWP TS_WAIT - blocked waiting for GC |
| 85 | kWaitingPerformingGc = 6, // Thread.WAITING JDWP TS_WAIT - performing GC |
| 86 | kWaitingForDebuggerSend = 7, // Thread.WAITING JDWP TS_WAIT - blocked waiting for events to be sent |
| 87 | kWaitingForDebuggerToAttach = 8, // Thread.WAITING JDWP TS_WAIT - blocked waiting for debugger to attach |
| 88 | kWaitingInMainDebuggerLoop = 9, // Thread.WAITING JDWP TS_WAIT - blocking/reading/processing debugger events |
| 89 | kWaitingForDebuggerSuspension = 10, // Thread.WAITING JDWP TS_WAIT - waiting for debugger suspend all |
| 90 | kWaitingForJniOnLoad = 11, // Thread.WAITING JDWP TS_WAIT - waiting for execution of dlopen and JNI on load code |
| 91 | kWaitingForSignalCatcherOutput = 12, // Thread.WAITING JDWP TS_WAIT - waiting for signal catcher IO to complete |
| 92 | kWaitingInMainSignalCatcherLoop = 13, // Thread.WAITING JDWP TS_WAIT - blocking/reading/processing signals |
| 93 | kStarting = 14, // Thread.NEW JDWP TS_WAIT - native thread started, not yet ready to run managed code |
| 94 | kNative = 15, // Thread.RUNNABLE JDWP TS_RUNNING - running in a JNI native method |
| 95 | kSuspended = 16, // Thread.RUNNABLE JDWP TS_RUNNING - suspended by GC or debugger |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 96 | }; |
| 97 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 98 | enum ThreadFlag { |
| 99 | kSuspendRequest = 1, // If set implies that suspend_count_ > 0. |
| 100 | kExceptionPending = 2, // If set implies that exception_ != NULL. |
| 101 | kEnterInterpreter = 4, // Instruct managed code it should enter the interpreter. |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 102 | kCheckpointRequest = 8, // Request that the thread do some set of work. |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 103 | }; |
| 104 | |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 105 | class PACKED Thread { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 106 | public: |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 107 | // Space to throw a StackOverflowError in. |
TDYa127 | 4165a83 | 2012-04-03 17:47:16 -0700 | [diff] [blame] | 108 | #if !defined(ART_USE_LLVM_COMPILER) |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 109 | static const size_t kStackOverflowReservedBytes = 4 * KB; |
TDYa127 | 4165a83 | 2012-04-03 17:47:16 -0700 | [diff] [blame] | 110 | #else // LLVM_x86 requires more memory to throw stack overflow exception. |
| 111 | static const size_t kStackOverflowReservedBytes = 8 * KB; |
| 112 | #endif |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 113 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 114 | // Creates a new native thread corresponding to the given managed peer. |
| 115 | // Used to implement Thread.start. |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 116 | static void CreateNativeThread(JNIEnv* env, jobject peer, size_t stack_size, bool daemon); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 117 | |
Elliott Hughes | 462c944 | 2012-03-23 18:47:50 -0700 | [diff] [blame] | 118 | // Attaches the calling native thread to the runtime, returning the new native peer. |
| 119 | // Used to implement JNI AttachCurrentThread and AttachCurrentThreadAsDaemon calls. |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 120 | static Thread* Attach(const char* thread_name, bool as_daemon, jobject thread_group); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 121 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 122 | // Reset internal state of child thread after fork. |
| 123 | void InitAfterFork(); |
| 124 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 125 | static Thread* Current() __attribute__ ((pure)) { |
Elliott Hughes | e044735 | 2012-06-11 18:30:31 -0700 | [diff] [blame] | 126 | // We rely on Thread::Current returning NULL for a detached thread, so it's not obvious |
| 127 | // that we can replace this with a direct %fs access on x86. |
Carl Shapiro | d0e7e77 | 2011-07-15 14:31:01 -0700 | [diff] [blame] | 128 | void* thread = pthread_getspecific(Thread::pthread_key_self_); |
| 129 | return reinterpret_cast<Thread*>(thread); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 130 | } |
| 131 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 132 | static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, Object* thread_peer) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 133 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 134 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 135 | static Thread* FromManagedThread(const ScopedObjectAccessUnchecked& ts, jobject thread) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 136 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 137 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 138 | |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 139 | // Translates 172 to pAllocArrayFromCode and so on. |
| 140 | static void DumpThreadOffset(std::ostream& os, uint32_t offset, size_t size_of_pointers); |
| 141 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 142 | // Dumps a one-line summary of thread state (used for operator<<). |
| 143 | void ShortDump(std::ostream& os) const; |
| 144 | |
| 145 | // Dumps the detailed thread state and the thread stack (used for SIGQUIT). |
| 146 | void Dump(std::ostream& os) const |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 147 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 148 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 149 | |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 150 | // Dumps the SIGQUIT per-thread header. 'thread' can be NULL for a non-attached thread, in which |
| 151 | // case we use 'tid' to identify the thread, and we'll include as much information as we can. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 152 | static void DumpState(std::ostream& os, const Thread* thread, pid_t tid) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 153 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_); |
Elliott Hughes | abbe07d | 2012-06-05 17:42:23 -0700 | [diff] [blame] | 154 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 155 | ThreadState GetState() const { |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 156 | return static_cast<ThreadState>(state_and_flags_.as_struct.state); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 157 | } |
| 158 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 159 | ThreadState SetState(ThreadState new_state); |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 160 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 161 | int GetSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 162 | return suspend_count_; |
| 163 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 164 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 165 | int GetDebugSuspendCount() const EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 166 | return debug_suspend_count_; |
| 167 | } |
| 168 | |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 169 | bool IsSuspended() const { |
| 170 | union StateAndFlags state_and_flags = state_and_flags_; |
| 171 | return state_and_flags.as_struct.state != kRunnable && |
| 172 | (state_and_flags.as_struct.flags & kSuspendRequest) != 0; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 173 | } |
| 174 | |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 175 | void ModifySuspendCount(Thread* self, int delta, bool for_debugger) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 176 | EXCLUSIVE_LOCKS_REQUIRED(Locks::thread_suspend_count_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 177 | |
Mathieu Chartier | 0e4627e | 2012-10-23 16:13:36 -0700 | [diff] [blame] | 178 | bool RequestCheckpoint(Closure* function); |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 179 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 180 | // Called when thread detected that the thread_suspend_count_ was non-zero. Gives up share of |
| 181 | // mutator_lock_ and waits until it is resumed and thread_suspend_count_ is zero. |
Ian Rogers | 9da7f59 | 2012-08-20 17:14:28 -0700 | [diff] [blame] | 182 | void FullSuspendCheck() |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 183 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 184 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 185 | |
| 186 | // Transition from non-runnable to runnable state acquiring share on mutator_lock_. |
| 187 | ThreadState TransitionFromSuspendedToRunnable() |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 188 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 189 | SHARED_LOCK_FUNCTION(Locks::mutator_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 190 | |
| 191 | // Transition from runnable into a state where mutator privileges are denied. Releases share of |
| 192 | // mutator lock. |
| 193 | void TransitionFromRunnableToSuspended(ThreadState new_state) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 194 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 195 | UNLOCK_FUNCTION(Locks::mutator_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 196 | |
| 197 | // Wait for a debugger suspension on the thread associated with the given peer. Returns the |
| 198 | // thread on success, else NULL. If the thread should be suspended then request_suspension should |
| 199 | // be true on entry. If the suspension times out then *timeout is set to true. |
| 200 | static Thread* SuspendForDebugger(jobject peer, bool request_suspension, bool* timeout) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 201 | LOCKS_EXCLUDED(Locks::mutator_lock_, |
| 202 | Locks::thread_list_lock_, |
| 203 | Locks::thread_suspend_count_lock_); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 204 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 205 | // Once called thread suspension will cause an assertion failure. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 206 | #ifndef NDEBUG |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 207 | const char* StartAssertNoThreadSuspension(const char* cause) { |
| 208 | CHECK(cause != NULL); |
| 209 | const char* previous_cause = last_no_thread_suspension_cause_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 210 | no_thread_suspension_++; |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 211 | last_no_thread_suspension_cause_ = cause; |
| 212 | return previous_cause; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 213 | } |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 214 | #else |
| 215 | const char* StartAssertNoThreadSuspension(const char* cause) { |
| 216 | CHECK(cause != NULL); |
| 217 | return NULL; |
| 218 | } |
| 219 | #endif |
| 220 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 221 | // End region where no thread suspension is expected. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 222 | #ifndef NDEBUG |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 223 | void EndAssertNoThreadSuspension(const char* old_cause) { |
| 224 | CHECK(old_cause != NULL || no_thread_suspension_ == 1); |
| 225 | CHECK_GT(no_thread_suspension_, 0U); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 226 | no_thread_suspension_--; |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 227 | last_no_thread_suspension_cause_ = old_cause; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 228 | } |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 229 | #else |
| 230 | void EndAssertNoThreadSuspension(const char*) { |
| 231 | } |
| 232 | #endif |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 233 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 234 | |
| 235 | #ifndef NDEBUG |
| 236 | void AssertThreadSuspensionIsAllowable(bool check_locks = true) const; |
| 237 | #else |
| 238 | void AssertThreadSuspensionIsAllowable(bool check_locks = true) const { |
Mathieu Chartier | e0f0cb3 | 2012-08-28 11:26:00 -0700 | [diff] [blame] | 239 | UNUSED(check_locks); // Keep GCC happy about unused parameters. |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 240 | } |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 241 | #endif |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 242 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 243 | bool IsDaemon() const { |
| 244 | return daemon_; |
| 245 | } |
| 246 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 247 | bool HoldsLock(Object*); |
| 248 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 249 | /* |
| 250 | * Changes the priority of this thread to match that of the java.lang.Thread object. |
| 251 | * |
| 252 | * We map a priority value from 1-10 to Linux "nice" values, where lower |
| 253 | * numbers indicate higher priority. |
| 254 | */ |
| 255 | void SetNativePriority(int newPriority); |
| 256 | |
| 257 | /* |
| 258 | * Returns the thread priority for the current thread by querying the system. |
| 259 | * This is useful when attaching a thread through JNI. |
| 260 | * |
| 261 | * Returns a value from 1 to 10 (compatible with java.lang.Thread values). |
| 262 | */ |
| 263 | static int GetNativePriority(); |
| 264 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 265 | uint32_t GetThinLockId() const { |
| 266 | return thin_lock_id_; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 269 | pid_t GetTid() const { |
| 270 | return tid_; |
| 271 | } |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 272 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 273 | // Returns the java.lang.Thread's name, or NULL if this Thread* doesn't have a peer. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 274 | String* GetThreadName(const ScopedObjectAccessUnchecked& ts) const |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 275 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 276 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 277 | // Sets 'name' to the java.lang.Thread's name. This requires no transition to managed code, |
| 278 | // allocation, or locking. |
| 279 | void GetThreadName(std::string& name) const; |
| 280 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 281 | // Sets the thread's name. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 282 | void SetThreadName(const char* name) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 283 | |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 284 | jobject GetPeer() const { |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 285 | return peer_; |
| 286 | } |
| 287 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 288 | bool HasPeer() const { |
| 289 | return peer_ != NULL; |
| 290 | } |
| 291 | |
Elliott Hughes | 9d5ccec | 2011-09-19 13:19:50 -0700 | [diff] [blame] | 292 | RuntimeStats* GetStats() { |
| 293 | return &stats_; |
| 294 | } |
| 295 | |
Elliott Hughes | 7dc5166 | 2012-05-16 14:48:43 -0700 | [diff] [blame] | 296 | bool IsStillStarting() const; |
| 297 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 298 | bool IsExceptionPending() const { |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 299 | bool result = ReadFlag(kExceptionPending); |
| 300 | DCHECK_EQ(result, exception_ != NULL); |
| 301 | return result; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 302 | } |
| 303 | |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 304 | Throwable* GetException() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 305 | return exception_; |
| 306 | } |
| 307 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 308 | void AssertNoPendingException() const; |
| 309 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 310 | void SetException(Throwable* new_exception) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 311 | CHECK(new_exception != NULL); |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 312 | // TODO: DCHECK(!IsExceptionPending()); |
| 313 | exception_ = new_exception; |
| 314 | AtomicSetFlag(kExceptionPending); |
| 315 | DCHECK(IsExceptionPending()); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | void ClearException() { |
| 319 | exception_ = NULL; |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 320 | AtomicClearFlag(kExceptionPending); |
| 321 | DCHECK(!IsExceptionPending()); |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 322 | } |
| 323 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 324 | // Find catch block and perform long jump to appropriate exception handle |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 325 | void DeliverException() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 326 | |
| 327 | Context* GetLongJumpContext(); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 328 | void ReleaseLongJumpContext(Context* context) { |
| 329 | DCHECK(long_jump_context_ == NULL); |
| 330 | long_jump_context_ = context; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 333 | AbstractMethod* GetCurrentMethod(uint32_t* dex_pc = NULL, size_t* frame_id = NULL) const |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 334 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 335 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 336 | void SetTopOfStack(void* stack, uintptr_t pc) { |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 337 | AbstractMethod** top_method = reinterpret_cast<AbstractMethod**>(stack); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 338 | managed_stack_.SetTopQuickFrame(top_method); |
| 339 | managed_stack_.SetTopQuickFramePc(pc); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 342 | bool HasManagedStack() const { |
| 343 | return managed_stack_.GetTopQuickFrame() != NULL || managed_stack_.GetTopShadowFrame() != NULL; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 344 | } |
| 345 | |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 346 | // If 'msg' is NULL, no detail message is set. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 347 | void ThrowNewException(const char* exception_class_descriptor, const char* msg) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 348 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 349 | |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 350 | // If 'msg' is NULL, no detail message is set. An exception must be pending, and will be |
| 351 | // used as the new exception's cause. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 352 | void ThrowNewWrappedException(const char* exception_class_descriptor, const char* msg) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 353 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | a4f9474 | 2012-05-29 16:28:38 -0700 | [diff] [blame] | 354 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 355 | void ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 356 | __attribute__((format(printf, 3, 4))) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 357 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 358 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 359 | void ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 360 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 361 | |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 362 | // OutOfMemoryError is special, because we need to pre-allocate an instance. |
Elliott Hughes | 8a8b9cb | 2012-04-13 18:29:22 -0700 | [diff] [blame] | 363 | // Only the GC should call this. |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 364 | void ThrowOutOfMemoryError(const char* msg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 365 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 366 | //QuickFrameIterator FindExceptionHandler(void* throw_pc, void** handler_pc); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 367 | |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 368 | void* FindExceptionHandlerInMethod(const AbstractMethod* method, |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 369 | void* throw_pc, |
| 370 | const DexFile& dex_file, |
| 371 | ClassLinker* class_linker); |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 372 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 373 | static void Startup(); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 374 | static void FinishStartup(); |
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 | // Convert a jobject into a Object* |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 383 | Object* DecodeJObject(jobject obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 384 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 385 | // Implements java.lang.Thread.interrupted. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 386 | bool Interrupted(); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 387 | // Implements java.lang.Thread.isInterrupted. |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 388 | bool IsInterrupted(); |
| 389 | void Interrupt(); |
| 390 | void Notify(); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 391 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 392 | ClassLoader* GetClassLoaderOverride() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 393 | return class_loader_override_; |
| 394 | } |
| 395 | |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 396 | void SetClassLoaderOverride(ClassLoader* class_loader_override) { |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 397 | class_loader_override_ = class_loader_override; |
| 398 | } |
| 399 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 400 | // Create the internal representation of a stack trace, that is more time |
| 401 | // and space efficient to compute than the StackTraceElement[] |
Ian Rogers | 64b6d14 | 2012-10-29 16:34:15 -0700 | [diff] [blame^] | 402 | jobject CreateInternalStackTrace(const ScopedObjectAccessUnchecked& soa) const |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 403 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 404 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 405 | // Convert an internal stack trace representation (returned by CreateInternalStackTrace) to a |
| 406 | // StackTraceElement[]. If output_array is NULL, a new array is created, otherwise as many |
| 407 | // frames as will fit are written into the given array. If stack_depth is non-NULL, it's updated |
| 408 | // with the number of valid frames in the returned array. |
| 409 | static jobjectArray InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 410 | jobjectArray output_array = NULL, int* stack_depth = NULL); |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 411 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 412 | void VisitRoots(Heap::RootVisitor* visitor, void* arg) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 413 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 414 | |
Mathieu Chartier | 6f1c949 | 2012-10-15 12:08:41 -0700 | [diff] [blame] | 415 | void VerifyRoots(Heap::VerifyRootVisitor* visitor, void* arg) |
| 416 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| 417 | |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 418 | #if VERIFY_OBJECT_ENABLED |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 419 | void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 420 | #else |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 421 | void VerifyStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_){} |
jeffhao | 2504552 | 2012-03-13 19:34:37 -0700 | [diff] [blame] | 422 | #endif |
| 423 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 424 | // |
| 425 | // Offsets of various members of native Thread class, used by compiled code. |
| 426 | // |
| 427 | |
| 428 | static ThreadOffset SelfOffset() { |
| 429 | return ThreadOffset(OFFSETOF_MEMBER(Thread, self_)); |
| 430 | } |
| 431 | |
| 432 | static ThreadOffset ExceptionOffset() { |
| 433 | return ThreadOffset(OFFSETOF_MEMBER(Thread, exception_)); |
| 434 | } |
| 435 | |
Elliott Hughes | 54e7df1 | 2011-09-16 11:47:04 -0700 | [diff] [blame] | 436 | static ThreadOffset ThinLockIdOffset() { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 437 | return ThreadOffset(OFFSETOF_MEMBER(Thread, thin_lock_id_)); |
| 438 | } |
| 439 | |
| 440 | static ThreadOffset CardTableOffset() { |
| 441 | return ThreadOffset(OFFSETOF_MEMBER(Thread, card_table_)); |
| 442 | } |
| 443 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 444 | static ThreadOffset ThreadFlagsOffset() { |
| 445 | return ThreadOffset(OFFSETOF_MEMBER(Thread, state_and_flags_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 446 | } |
| 447 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 448 | // Size of stack less any space reserved for stack overflow |
| 449 | size_t GetStackSize() { |
Ian Rogers | 30fab40 | 2012-01-23 15:43:46 -0800 | [diff] [blame] | 450 | return stack_size_ - (stack_end_ - stack_begin_); |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 451 | } |
| 452 | |
| 453 | // Set the stack end to that to be used during a stack overflow |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 454 | void SetStackEndForStackOverflow() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 455 | |
| 456 | // Set the stack end to that to be used during regular execution |
| 457 | void ResetDefaultStackEnd() { |
| 458 | // Our stacks grow down, so we want stack_end_ to be near there, but reserving enough room |
| 459 | // to throw a StackOverflowError. |
Ian Rogers | 30fab40 | 2012-01-23 15:43:46 -0800 | [diff] [blame] | 460 | stack_end_ = stack_begin_ + kStackOverflowReservedBytes; |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 461 | } |
| 462 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 463 | bool IsHandlingStackOverflow() const { |
| 464 | return stack_end_ == stack_begin_; |
| 465 | } |
| 466 | |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 467 | static ThreadOffset StackEndOffset() { |
| 468 | return ThreadOffset(OFFSETOF_MEMBER(Thread, stack_end_)); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | static ThreadOffset JniEnvOffset() { |
| 472 | return ThreadOffset(OFFSETOF_MEMBER(Thread, jni_env_)); |
| 473 | } |
| 474 | |
| 475 | static ThreadOffset TopOfManagedStackOffset() { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 476 | return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + |
| 477 | ManagedStack::TopQuickFrameOffset()); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 478 | } |
| 479 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 480 | static ThreadOffset TopOfManagedStackPcOffset() { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 481 | return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + |
| 482 | ManagedStack::TopQuickFramePcOffset()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 483 | } |
| 484 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 485 | const ManagedStack* GetManagedStack() const { |
| 486 | return &managed_stack_; |
| 487 | } |
| 488 | |
| 489 | // Linked list recording fragments of managed stack. |
| 490 | void PushManagedStackFragment(ManagedStack* fragment) { |
| 491 | managed_stack_.PushManagedStackFragment(fragment); |
| 492 | } |
| 493 | void PopManagedStackFragment(const ManagedStack& fragment) { |
| 494 | managed_stack_.PopManagedStackFragment(fragment); |
| 495 | } |
| 496 | |
| 497 | ShadowFrame* PushShadowFrame(ShadowFrame* new_top_frame) { |
| 498 | return managed_stack_.PushShadowFrame(new_top_frame); |
TDYa127 | de479be | 2012-05-31 08:03:26 -0700 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | ShadowFrame* PopShadowFrame() { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 502 | return managed_stack_.PopShadowFrame(); |
TDYa127 | de479be | 2012-05-31 08:03:26 -0700 | [diff] [blame] | 503 | } |
Logan Chien | f7ad17e | 2012-03-15 03:10:03 +0800 | [diff] [blame] | 504 | |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 505 | static ThreadOffset TopShadowFrameOffset() { |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 506 | return ThreadOffset(OFFSETOF_MEMBER(Thread, managed_stack_) + |
| 507 | ManagedStack::TopShadowFrameOffset()); |
TDYa127 | d668a06 | 2012-04-13 12:36:57 -0700 | [diff] [blame] | 508 | } |
| 509 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 510 | // Number of references allocated in ShadowFrames on this thread |
| 511 | size_t NumShadowFrameReferences() const { |
| 512 | return managed_stack_.NumShadowFrameReferences(); |
| 513 | } |
| 514 | |
| 515 | // Number of references in SIRTs on this thread |
| 516 | size_t NumSirtReferences(); |
| 517 | |
| 518 | // Number of references allocated in SIRTs & shadow frames on this thread |
| 519 | size_t NumStackReferences() { |
| 520 | return NumSirtReferences() + NumShadowFrameReferences(); |
| 521 | }; |
| 522 | |
| 523 | // Is the given obj in this thread's stack indirect reference table? |
| 524 | bool SirtContains(jobject obj); |
| 525 | |
| 526 | void SirtVisitRoots(Heap::RootVisitor* visitor, void* arg); |
| 527 | |
Ian Rogers | 1f53934 | 2012-10-03 21:09:42 -0700 | [diff] [blame] | 528 | void PushSirt(StackIndirectReferenceTable* sirt) { |
| 529 | sirt->SetLink(top_sirt_); |
| 530 | top_sirt_ = sirt; |
| 531 | } |
| 532 | |
| 533 | StackIndirectReferenceTable* PopSirt() { |
| 534 | StackIndirectReferenceTable* sirt = top_sirt_; |
| 535 | DCHECK(sirt != NULL); |
| 536 | top_sirt_ = top_sirt_->GetLink(); |
| 537 | return sirt; |
| 538 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 539 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 540 | static ThreadOffset TopSirtOffset() { |
| 541 | return ThreadOffset(OFFSETOF_MEMBER(Thread, top_sirt_)); |
| 542 | } |
| 543 | |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 544 | DebugInvokeReq* GetInvokeReq() { |
| 545 | return debug_invoke_req_; |
| 546 | } |
| 547 | |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 548 | void SetDebuggerUpdatesEnabled(bool enabled); |
| 549 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 550 | const std::vector<TraceStackFrame>* GetTraceStack() const { |
| 551 | return trace_stack_; |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 552 | } |
| 553 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 554 | bool IsTraceStackEmpty() const { |
| 555 | return trace_stack_->empty(); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 556 | } |
| 557 | |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 558 | void PushTraceStackFrame(const TraceStackFrame& frame) { |
| 559 | trace_stack_->push_back(frame); |
| 560 | } |
| 561 | |
| 562 | TraceStackFrame PopTraceStackFrame() { |
| 563 | TraceStackFrame frame = trace_stack_->back(); |
| 564 | trace_stack_->pop_back(); |
| 565 | return frame; |
| 566 | } |
| 567 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 568 | BaseMutex* GetHeldMutex(LockLevel level) const { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 569 | return held_mutexes_[level]; |
| 570 | } |
| 571 | |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 572 | void SetHeldMutex(LockLevel level, BaseMutex* mutex) { |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 573 | held_mutexes_[level] = mutex; |
| 574 | } |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 575 | |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 576 | void RunCheckpointFunction() { |
| 577 | CHECK(checkpoint_function_ != NULL); |
| 578 | checkpoint_function_->Run(this); |
| 579 | } |
| 580 | |
| 581 | bool ReadFlag(ThreadFlag flag) const { |
| 582 | return (state_and_flags_.as_struct.flags & flag) != 0; |
| 583 | } |
| 584 | |
| 585 | void AtomicSetFlag(ThreadFlag flag); |
| 586 | |
| 587 | void AtomicClearFlag(ThreadFlag flag); |
| 588 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 589 | private: |
Elliott Hughes | 5d96a71 | 2012-06-28 12:24:27 -0700 | [diff] [blame] | 590 | // We have no control over the size of 'bool', but want our boolean fields |
| 591 | // to be 4-byte quantities. |
| 592 | typedef uint32_t bool32_t; |
| 593 | |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 594 | explicit Thread(bool daemon); |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 595 | ~Thread() LOCKS_EXCLUDED(Locks::mutator_lock_, |
| 596 | Locks::thread_suspend_count_lock_); |
Elliott Hughes | c0f0933 | 2012-03-26 13:27:06 -0700 | [diff] [blame] | 597 | void Destroy(); |
| 598 | friend class ThreadList; // For ~Thread and Destroy. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 599 | |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 600 | void CreatePeer(const char* name, bool as_daemon, jobject thread_group); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 601 | friend class Runtime; // For CreatePeer. |
| 602 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 603 | // Avoid use, callers should use SetState. Used only by SignalCatcher::HandleSigQuit and ~Thread. |
| 604 | ThreadState SetStateUnsafe(ThreadState new_state) { |
| 605 | ThreadState old_state = GetState(); |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 606 | state_and_flags_.as_struct.state = new_state; |
Ian Rogers | c747cff | 2012-08-31 18:20:08 -0700 | [diff] [blame] | 607 | return old_state; |
| 608 | } |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 609 | friend class SignalCatcher; // For SetStateUnsafe. |
Ian Rogers | c747cff | 2012-08-31 18:20:08 -0700 | [diff] [blame] | 610 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 611 | void DumpState(std::ostream& os) const; |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 612 | void DumpStack(std::ostream& os) const |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 613 | LOCKS_EXCLUDED(Locks::thread_suspend_count_lock_) |
| 614 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 615 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 616 | // Out-of-line conveniences for debugging in gdb. |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 617 | static Thread* CurrentFromGdb(); // Like Thread::Current. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 618 | // Like Thread::Dump(std::cerr). |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 619 | void DumpFromGdb() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 620 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 621 | static void* CreateCallback(void* arg); |
| 622 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 623 | void HandleUncaughtExceptions(); |
| 624 | void RemoveFromThreadGroup(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 625 | |
Ian Rogers | 120f1c7 | 2012-09-28 17:17:10 -0700 | [diff] [blame] | 626 | void Init(ThreadList*, JavaVMExt*) EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 627 | void InitCardTable(); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 628 | void InitCpu(); |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 629 | void InitFunctionPointers(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 630 | void InitTid(); |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 631 | void InitPthreadKeySelf(); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 632 | void InitStackHwm(); |
| 633 | |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 634 | void NotifyLocked(Thread* self) EXCLUSIVE_LOCKS_REQUIRED(wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 635 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 636 | static void ThreadExitCallback(void* arg); |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 637 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 638 | // TLS key used to retrieve the Thread*. |
| 639 | static pthread_key_t pthread_key_self_; |
| 640 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 641 | // Used to notify threads that they should attempt to resume, they will suspend again if |
| 642 | // their suspend count is > 0. |
Ian Rogers | c604d73 | 2012-10-14 16:09:54 -0700 | [diff] [blame] | 643 | static ConditionVariable* resume_cond_ GUARDED_BY(Locks::thread_suspend_count_lock_); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 644 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 645 | // --- Frequently accessed fields first for short offsets --- |
| 646 | |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 647 | // 32 bits of atomically changed state and flags. Keeping as 32 bits allows and atomic CAS to |
| 648 | // change from being Suspended to Runnable without a suspend request occurring. |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 649 | union StateAndFlags { |
| 650 | struct PACKED { |
| 651 | // Bitfield of flag values. Must be changed atomically so that flag values aren't lost. See |
| 652 | // ThreadFlags for bit field meanings. |
| 653 | volatile uint16_t flags; |
| 654 | // Holds the ThreadState. May be changed non-atomically between Suspended (ie not Runnable) |
| 655 | // transitions. Changing to Runnable requires that the suspend_request be part of the atomic |
| 656 | // operation. If a thread is suspended and a suspend_request is present, a thread may not |
| 657 | // change to Runnable as a GC or other operation is in progress. |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 658 | volatile uint16_t state; |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 659 | } as_struct; |
Ian Rogers | 01ae580 | 2012-09-28 16:14:01 -0700 | [diff] [blame] | 660 | volatile int32_t as_int; |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 661 | }; |
Ian Rogers | 30e173f | 2012-09-26 14:35:03 -0700 | [diff] [blame] | 662 | union StateAndFlags state_and_flags_; |
| 663 | COMPILE_ASSERT(sizeof(union StateAndFlags) == sizeof(int32_t), |
Ian Rogers | 474b6da | 2012-09-25 00:20:38 -0700 | [diff] [blame] | 664 | sizeof_state_and_flags_and_int32_are_different); |
| 665 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 666 | // A non-zero value is used to tell the current thread to enter a safe point |
| 667 | // at the next poll. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 668 | int suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 669 | |
| 670 | // The biased card table, see CardTable for details |
| 671 | byte* card_table_; |
| 672 | |
| 673 | // The pending exception or NULL. |
| 674 | Throwable* exception_; |
| 675 | |
| 676 | // The end of this thread's stack. This is the lowest safely-addressable address on the stack. |
| 677 | // We leave extra space so there's room for the code that throws StackOverflowError. |
| 678 | byte* stack_end_; |
| 679 | |
| 680 | // The top of the managed stack often manipulated directly by compiler generated code. |
| 681 | ManagedStack managed_stack_; |
| 682 | |
| 683 | // Every thread may have an associated JNI environment |
| 684 | JNIEnvExt* jni_env_; |
| 685 | |
| 686 | // Initialized to "this". On certain architectures (such as x86) reading |
| 687 | // off of Thread::Current is easy but getting the address of Thread::Current |
| 688 | // is hard. This field can be read off of Thread::Current to give the address. |
| 689 | Thread* self_; |
| 690 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 691 | // Our managed peer (an instance of java.lang.Thread). |
Mathieu Chartier | dbe6f46 | 2012-09-25 16:54:50 -0700 | [diff] [blame] | 692 | jobject peer_; |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 693 | |
| 694 | // The "lowest addressable byte" of the stack |
| 695 | byte* stack_begin_; |
| 696 | |
| 697 | // Size of the stack |
| 698 | size_t stack_size_; |
| 699 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 700 | // Thin lock thread id. This is a small integer used by the thin lock implementation. |
| 701 | // This is not to be confused with the native thread's tid, nor is it the value returned |
| 702 | // by java.lang.Thread.getId --- this is a distinct value, used only for locking. One |
| 703 | // important difference between this id and the ids visible to managed code is that these |
| 704 | // ones get reused (to ensure that they fit in the number of bits available). |
| 705 | uint32_t thin_lock_id_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 706 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 707 | // System thread id. |
| 708 | pid_t tid_; |
| 709 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 710 | // Guards the 'interrupted_' and 'wait_monitor_' members. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 711 | mutable Mutex* wait_mutex_ DEFAULT_MUTEX_ACQUIRED_AFTER; |
| 712 | ConditionVariable* wait_cond_ GUARDED_BY(wait_mutex_); |
| 713 | // Pointer to the monitor lock we're currently waiting on (or NULL). |
| 714 | Monitor* wait_monitor_ GUARDED_BY(wait_mutex_); |
| 715 | // Thread "interrupted" status; stays raised until queried or thrown. |
| 716 | bool32_t interrupted_ GUARDED_BY(wait_mutex_); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 717 | // The next thread in the wait set this thread is part of. |
| 718 | Thread* wait_next_; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 719 | // If we're blocked in MonitorEnter, this is the object we're trying to lock. |
| 720 | Object* monitor_enter_object_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 721 | |
| 722 | friend class Monitor; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 723 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 724 | // Top of linked list of stack indirect reference tables or NULL for none |
| 725 | StackIndirectReferenceTable* top_sirt_; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 726 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 727 | Runtime* runtime_; |
| 728 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 729 | RuntimeStats stats_; |
Ian Rogers | 45a76cb | 2011-07-21 22:00:15 -0700 | [diff] [blame] | 730 | |
Elliott Hughes | edcc09c | 2011-08-21 18:47:05 -0700 | [diff] [blame] | 731 | // Needed to get the right ClassLoader in JNI_OnLoad, but also |
| 732 | // useful for testing. |
Ian Rogers | 365c102 | 2012-06-22 15:05:28 -0700 | [diff] [blame] | 733 | ClassLoader* class_loader_override_; |
buzbee | c143c55 | 2011-08-20 17:38:58 -0700 | [diff] [blame] | 734 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 735 | // Thread local, lazily allocated, long jump context. Used to deliver exceptions. |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 736 | Context* long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 737 | |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 738 | // A boolean telling us whether we're recursively throwing OOME. |
Elliott Hughes | 5d96a71 | 2012-06-28 12:24:27 -0700 | [diff] [blame] | 739 | bool32_t throwing_OutOfMemoryError_; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 740 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 741 | // How much of 'suspend_count_' is by request of the debugger, used to set things right |
| 742 | // when the debugger detaches. Must be <= suspend_count_. |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 743 | int debug_suspend_count_ GUARDED_BY(Locks::thread_suspend_count_lock_); |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 744 | |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 745 | // JDWP invoke-during-breakpoint support. |
| 746 | DebugInvokeReq* debug_invoke_req_; |
| 747 | |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 748 | // Additional stack used by method tracer to store method and return pc values. |
| 749 | // Stored as a pointer since std::vector is not PACKED. |
| 750 | std::vector<TraceStackFrame>* trace_stack_; |
| 751 | |
Elliott Hughes | 899e789 | 2012-01-24 14:57:32 -0800 | [diff] [blame] | 752 | // A cached copy of the java.lang.Thread's name. |
| 753 | std::string* name_; |
| 754 | |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 755 | // Is the thread a daemon? |
Elliott Hughes | 5d96a71 | 2012-06-28 12:24:27 -0700 | [diff] [blame] | 756 | const bool32_t daemon_; |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 757 | |
Elliott Hughes | 0d39c12 | 2012-06-06 16:41:17 -0700 | [diff] [blame] | 758 | // A cached pthread_t for the pthread underlying this Thread*. |
| 759 | pthread_t pthread_self_; |
| 760 | |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 761 | // Support for Mutex lock hierarchy bug detection. |
| 762 | BaseMutex* held_mutexes_[kMaxMutexLevel + 1]; |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 763 | |
Ian Rogers | 0399dde | 2012-06-06 17:09:28 -0700 | [diff] [blame] | 764 | // A positive value implies we're in a region where thread suspension isn't expected. |
| 765 | uint32_t no_thread_suspension_; |
Ian Rogers | 52673ff | 2012-06-27 23:25:34 -0700 | [diff] [blame] | 766 | |
| 767 | // Cause for last suspension. |
| 768 | const char* last_no_thread_suspension_cause_; |
Elliott Hughes | 5d96a71 | 2012-06-28 12:24:27 -0700 | [diff] [blame] | 769 | |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 770 | // Pending checkpoint functions. |
Mathieu Chartier | 0e4627e | 2012-10-23 16:13:36 -0700 | [diff] [blame] | 771 | Closure* checkpoint_function_; |
Mathieu Chartier | 858f1c5 | 2012-10-17 17:45:55 -0700 | [diff] [blame] | 772 | |
Ian Rogers | a32a6fd | 2012-02-06 20:18:44 -0800 | [diff] [blame] | 773 | public: |
| 774 | // Runtime support function pointers |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 775 | // TODO: move this near the top, since changing its offset requires all oats to be recompiled! |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 776 | EntryPoints entrypoints_; |
Ian Rogers | a32a6fd | 2012-02-06 20:18:44 -0800 | [diff] [blame] | 777 | |
| 778 | private: |
Elliott Hughes | 6a607ad | 2012-07-13 20:40:00 -0700 | [diff] [blame] | 779 | // How many times has our pthread key's destructor been called? |
| 780 | uint32_t thread_exit_check_count_; |
| 781 | |
Ian Rogers | 22f454c | 2012-09-08 11:06:29 -0700 | [diff] [blame] | 782 | friend class ScopedThreadStateChange; |
| 783 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 784 | DISALLOW_COPY_AND_ASSIGN(Thread); |
| 785 | }; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 786 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 787 | std::ostream& operator<<(std::ostream& os, const Thread& thread); |
Elliott Hughes | 34e0696 | 2012-04-09 13:55:55 -0700 | [diff] [blame] | 788 | std::ostream& operator<<(std::ostream& os, const ThreadState& state); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 789 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 790 | } // namespace art |
| 791 | |
| 792 | #endif // ART_SRC_THREAD_H_ |