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 | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 16 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "thread.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 18 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 19 | #include <dynamic_annotations.h> |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 20 | #include <pthread.h> |
| 21 | #include <sys/mman.h> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 22 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 23 | #include <algorithm> |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 24 | #include <bitset> |
Elliott Hughes | eb4f614 | 2011-07-15 17:43:51 -0700 | [diff] [blame] | 25 | #include <cerrno> |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 26 | #include <iostream> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 27 | #include <list> |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 28 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 29 | #include "debugger.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 30 | #include "class_linker.h" |
Brian Carlstrom | df14324 | 2011-10-10 18:05:34 -0700 | [diff] [blame] | 31 | #include "class_loader.h" |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 32 | #include "context.h" |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 33 | #include "dex_verifier.h" |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 34 | #include "heap.h" |
Elliott Hughes | c5f7c91 | 2011-08-18 14:00:42 -0700 | [diff] [blame] | 35 | #include "jni_internal.h" |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 36 | #include "monitor.h" |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 37 | #include "object.h" |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 38 | #include "object_utils.h" |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 39 | #include "reflection.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 40 | #include "runtime.h" |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 41 | #include "runtime_support.h" |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 42 | #include "ScopedLocalRef.h" |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 43 | #include "scoped_jni_thread_state.h" |
Elliott Hughes | 68e7652 | 2011-10-05 13:22:16 -0700 | [diff] [blame] | 44 | #include "stack.h" |
| 45 | #include "stack_indirect_reference_table.h" |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 46 | #include "thread_list.h" |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 47 | #include "utils.h" |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 48 | |
| 49 | namespace art { |
| 50 | |
| 51 | pthread_key_t Thread::pthread_key_self_; |
| 52 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 53 | static Class* gThreadLock = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 54 | static Class* gThrowable = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 55 | static Field* gThread_daemon = NULL; |
| 56 | static Field* gThread_group = NULL; |
| 57 | static Field* gThread_lock = NULL; |
| 58 | static Field* gThread_name = NULL; |
| 59 | static Field* gThread_priority = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 60 | static Field* gThread_uncaughtHandler = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 61 | static Field* gThread_vmData = NULL; |
| 62 | static Field* gThreadGroup_name = NULL; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 63 | static Field* gThreadLock_thread = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 64 | static Method* gThread_run = NULL; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 65 | static Method* gThreadGroup_removeThread = NULL; |
| 66 | static Method* gUncaughtExceptionHandler_uncaughtException = NULL; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 67 | |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 68 | void Thread::InitCardTable() { |
| 69 | card_table_ = Heap::GetCardTable()->GetBiasedBase(); |
| 70 | } |
| 71 | |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 72 | void Thread::InitFunctionPointers() { |
buzbee | 5433072 | 2011-08-23 16:46:55 -0700 | [diff] [blame] | 73 | #if defined(__arm__) |
| 74 | pShlLong = art_shl_long; |
| 75 | pShrLong = art_shr_long; |
| 76 | pUshrLong = art_ushr_long; |
buzbee | 7b1b86d | 2011-08-26 18:59:10 -0700 | [diff] [blame] | 77 | pIdiv = __aeabi_idiv; |
| 78 | pIdivmod = __aeabi_idivmod; |
| 79 | pI2f = __aeabi_i2f; |
| 80 | pF2iz = __aeabi_f2iz; |
| 81 | pD2f = __aeabi_d2f; |
| 82 | pF2d = __aeabi_f2d; |
| 83 | pD2iz = __aeabi_d2iz; |
| 84 | pL2f = __aeabi_l2f; |
| 85 | pL2d = __aeabi_l2d; |
| 86 | pFadd = __aeabi_fadd; |
| 87 | pFsub = __aeabi_fsub; |
| 88 | pFdiv = __aeabi_fdiv; |
| 89 | pFmul = __aeabi_fmul; |
| 90 | pFmodf = fmodf; |
| 91 | pDadd = __aeabi_dadd; |
| 92 | pDsub = __aeabi_dsub; |
| 93 | pDdiv = __aeabi_ddiv; |
| 94 | pDmul = __aeabi_dmul; |
| 95 | pFmod = fmod; |
buzbee | 7b1b86d | 2011-08-26 18:59:10 -0700 | [diff] [blame] | 96 | pLdivmod = __aeabi_ldivmod; |
buzbee | 439c4fa | 2011-08-27 15:59:07 -0700 | [diff] [blame] | 97 | pLmul = __aeabi_lmul; |
Elliott Hughes | b408de7 | 2011-10-04 14:35:05 -0700 | [diff] [blame] | 98 | pAllocArrayFromCode = art_alloc_array_from_code; |
Brian Carlstrom | 6fd03fb | 2011-10-17 16:11:00 -0700 | [diff] [blame] | 99 | pAllocObjectFromCode = art_alloc_object_from_code; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 100 | pAllocObjectFromCodeWithAccessCheck = art_alloc_object_from_code_with_access_check; |
Ian Rogers | e51a511 | 2011-09-23 14:16:35 -0700 | [diff] [blame] | 101 | pCanPutArrayElementFromCode = art_can_put_array_element_from_code; |
Elliott Hughes | b408de7 | 2011-10-04 14:35:05 -0700 | [diff] [blame] | 102 | pCheckAndAllocArrayFromCode = art_check_and_alloc_array_from_code; |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 103 | pCheckCastFromCode = art_check_cast_from_code; |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 104 | pFindInstanceFieldFromCode = art_find_instance_field_from_code; |
| 105 | pGet32Static = art_get32_static_from_code; |
| 106 | pGet64Static = art_get64_static_from_code; |
| 107 | pGetObjStatic = art_get_obj_static_from_code; |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 108 | pHandleFillArrayDataFromCode = art_handle_fill_data_from_code; |
Ian Rogers | cbba6ac | 2011-09-22 16:28:37 -0700 | [diff] [blame] | 109 | pInitializeStaticStorage = art_initialize_static_storage_from_code; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 110 | pInitializeTypeFromCode = art_initialize_type_from_code; |
Ian Rogers | b093c6b | 2011-10-31 16:19:55 -0700 | [diff] [blame] | 111 | pInitializeTypeAndVerifyAccessFromCode = art_initialize_type_and_verify_access_from_code; |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 112 | pInvokeInterfaceTrampoline = art_invoke_interface_trampoline; |
Brian Carlstrom | 6fd03fb | 2011-10-17 16:11:00 -0700 | [diff] [blame] | 113 | pLockObjectFromCode = art_lock_object_from_code; |
| 114 | pObjectInit = art_object_init_from_code; |
| 115 | pResolveStringFromCode = art_resolve_string_from_code; |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 116 | pSet32Static = art_set32_static_from_code; |
| 117 | pSet64Static = art_set64_static_from_code; |
| 118 | pSetObjStatic = art_set_obj_static_from_code; |
Brian Carlstrom | 6fd03fb | 2011-10-17 16:11:00 -0700 | [diff] [blame] | 119 | pTestSuspendFromCode = art_test_suspend; |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 120 | pThrowArrayBoundsFromCode = art_throw_array_bounds_from_code; |
| 121 | pThrowDivZeroFromCode = art_throw_div_zero_from_code; |
Ian Rogers | c0c8dc8 | 2011-09-24 18:15:59 -0700 | [diff] [blame] | 122 | pThrowNegArraySizeFromCode = art_throw_neg_array_size_from_code; |
| 123 | pThrowNoSuchMethodFromCode = art_throw_no_such_method_from_code; |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 124 | pThrowNullPointerFromCode = art_throw_null_pointer_exception_from_code; |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 125 | pThrowStackOverflowFromCode = art_throw_stack_overflow_from_code; |
Ian Rogers | c0c8dc8 | 2011-09-24 18:15:59 -0700 | [diff] [blame] | 126 | pThrowVerificationErrorFromCode = art_throw_verification_error_from_code; |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 127 | pUnlockObjectFromCode = art_unlock_object_from_code; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 128 | #endif |
buzbee | c396efc | 2011-09-11 09:36:41 -0700 | [diff] [blame] | 129 | pF2l = F2L; |
| 130 | pD2l = D2L; |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 131 | pMemcpy = memcpy; |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 132 | pCheckSuspendFromCode = CheckSuspendFromCode; |
buzbee | 4a3164f | 2011-09-03 11:25:10 -0700 | [diff] [blame] | 133 | pDebugMe = DebugMe; |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 134 | pDecodeJObjectInThread = DecodeJObjectInThread; |
| 135 | pDeliverException = art_deliver_exception_from_code; |
| 136 | pFindNativeMethod = FindNativeMethod; |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame] | 137 | pInstanceofNonTrivialFromCode = IsAssignableFromCode; |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 138 | pResolveMethodFromCode = ResolveMethodFromCode; |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 139 | pThrowAbstractMethodErrorFromCode = ThrowAbstractMethodErrorFromCode; |
| 140 | pUnresolvedDirectMethodTrampolineFromCode = UnresolvedDirectMethodTrampolineFromCode; |
buzbee | 3ea4ec5 | 2011-08-22 17:37:19 -0700 | [diff] [blame] | 141 | } |
| 142 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 143 | void Thread::InitTid() { |
| 144 | tid_ = ::art::GetTid(); |
| 145 | } |
| 146 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 147 | void Thread::InitAfterFork() { |
| 148 | InitTid(); |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 149 | #if defined(__BIONIC__) |
| 150 | // Work around a bionic bug. |
| 151 | struct bionic_pthread_internal_t { |
| 152 | void* next; |
| 153 | void** pref; |
| 154 | pthread_attr_t attr; |
| 155 | pid_t kernel_id; |
| 156 | // et cetera. we just need 'kernel_id' so we can stop here. |
| 157 | }; |
| 158 | reinterpret_cast<bionic_pthread_internal_t*>(pthread_self())->kernel_id = tid_; |
| 159 | #endif |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 160 | } |
| 161 | |
Brian Carlstrom | 78128a6 | 2011-09-15 17:21:19 -0700 | [diff] [blame] | 162 | void* Thread::CreateCallback(void* arg) { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 163 | Thread* self = reinterpret_cast<Thread*>(arg); |
| 164 | Runtime* runtime = Runtime::Current(); |
| 165 | |
| 166 | self->Attach(runtime); |
| 167 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 168 | // Wait until it's safe to start running code. (There may have been a suspend-all |
| 169 | // in progress while we were starting up.) |
| 170 | runtime->GetThreadList()->WaitForGo(); |
| 171 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 172 | { |
| 173 | CHECK_EQ(self->GetState(), Thread::kRunnable); |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 174 | SirtRef<String> thread_name(self->GetName()); |
| 175 | SetThreadName(thread_name->ToModifiedUtf8().c_str()); |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 176 | } |
| 177 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 178 | Dbg::PostThreadStart(self); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 179 | |
| 180 | // Invoke the 'run' method of our java.lang.Thread. |
| 181 | CHECK(self->peer_ != NULL); |
| 182 | Object* receiver = self->peer_; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 183 | Method* m = receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(gThread_run); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 184 | m->Invoke(self, receiver, NULL, NULL); |
| 185 | |
| 186 | // Detach. |
| 187 | runtime->GetThreadList()->Unregister(); |
| 188 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 189 | return NULL; |
| 190 | } |
| 191 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 192 | void SetVmData(Object* managed_thread, Thread* native_thread) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 193 | gThread_vmData->SetInt(managed_thread, reinterpret_cast<uintptr_t>(native_thread)); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 194 | } |
| 195 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 196 | Thread* Thread::FromManagedThread(Object* thread_peer) { |
| 197 | return reinterpret_cast<Thread*>(static_cast<uintptr_t>(gThread_vmData->GetInt(thread_peer))); |
| 198 | } |
| 199 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 200 | Thread* Thread::FromManagedThread(JNIEnv* env, jobject java_thread) { |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 201 | return FromManagedThread(Decode<Object*>(env, java_thread)); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 202 | } |
| 203 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 204 | size_t FixStackSize(size_t stack_size) { |
| 205 | // A stack size of zero means "use the default". |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 206 | if (stack_size == 0) { |
| 207 | stack_size = Runtime::Current()->GetDefaultStackSize(); |
| 208 | } |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 209 | |
Elliott Hughes | 7502e2a | 2011-10-02 13:24:37 -0700 | [diff] [blame] | 210 | // It's not possible to request a stack smaller than the system-defined PTHREAD_STACK_MIN. |
| 211 | if (stack_size < PTHREAD_STACK_MIN) { |
| 212 | stack_size = PTHREAD_STACK_MIN; |
| 213 | } |
| 214 | |
| 215 | // It's likely that callers are trying to ensure they have at least a certain amount of |
| 216 | // stack space, so we should add our reserved space on top of what they requested, rather |
| 217 | // than implicitly take it away from them. |
| 218 | stack_size += Thread::kStackOverflowReservedBytes; |
| 219 | |
| 220 | // Some systems require the stack size to be a multiple of the system page size, so round up. |
| 221 | stack_size = RoundUp(stack_size, kPageSize); |
| 222 | |
| 223 | return stack_size; |
| 224 | } |
| 225 | |
| 226 | void Thread::Create(Object* peer, size_t stack_size) { |
| 227 | CHECK(peer != NULL); |
| 228 | |
| 229 | stack_size = FixStackSize(stack_size); |
| 230 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 231 | Thread* native_thread = new Thread; |
| 232 | native_thread->peer_ = peer; |
| 233 | |
| 234 | // Thread.start is synchronized, so we know that vmData is 0, |
| 235 | // and know that we're not racing to assign it. |
| 236 | SetVmData(peer, native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 237 | |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 238 | { |
| 239 | ScopedThreadStateChange tsc(Thread::Current(), Thread::kVmWait); |
| 240 | pthread_t new_pthread; |
| 241 | pthread_attr_t attr; |
| 242 | CHECK_PTHREAD_CALL(pthread_attr_init, (&attr), "new thread"); |
| 243 | CHECK_PTHREAD_CALL(pthread_attr_setdetachstate, (&attr, PTHREAD_CREATE_DETACHED), "PTHREAD_CREATE_DETACHED"); |
| 244 | CHECK_PTHREAD_CALL(pthread_attr_setstacksize, (&attr, stack_size), stack_size); |
| 245 | CHECK_PTHREAD_CALL(pthread_create, (&new_pthread, &attr, Thread::CreateCallback, native_thread), "new thread"); |
| 246 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attr), "new thread"); |
| 247 | } |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 248 | |
| 249 | // Let the child know when it's safe to start running. |
| 250 | Runtime::Current()->GetThreadList()->SignalGo(native_thread); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 251 | } |
| 252 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 253 | void Thread::Attach(const Runtime* runtime) { |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 254 | CHECK(Thread::Current() == NULL); |
| 255 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 256 | InitCpu(); |
| 257 | InitFunctionPointers(); |
Ian Rogers | 5d76c43 | 2011-10-31 21:42:49 -0700 | [diff] [blame] | 258 | InitCardTable(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 259 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 260 | thin_lock_id_ = Runtime::Current()->GetThreadList()->AllocThreadId(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 261 | |
Brian Carlstrom | caabb1b | 2011-10-11 18:09:13 -0700 | [diff] [blame] | 262 | InitTid(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 263 | InitStackHwm(); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 264 | |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 265 | CHECK_PTHREAD_CALL(pthread_setspecific, (Thread::pthread_key_self_, this), "attach"); |
Elliott Hughes | a5780da | 2011-07-17 11:39:39 -0700 | [diff] [blame] | 266 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 267 | jni_env_ = new JNIEnvExt(this, runtime->GetJavaVM()); |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 268 | |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 269 | runtime->GetThreadList()->Register(); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | Thread* Thread::Attach(const Runtime* runtime, const char* name, bool as_daemon) { |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 273 | Thread* self = new Thread; |
| 274 | self->Attach(runtime); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 275 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 276 | self->SetState(Thread::kNative); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 277 | |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 278 | // If we're the main thread, ClassLinker won't be created until after we're attached, |
| 279 | // so that thread needs a two-stage attach. Regular threads don't need this hack. |
| 280 | if (self->thin_lock_id_ != ThreadList::kMainId) { |
| 281 | self->CreatePeer(name, as_daemon); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 282 | } |
Elliott Hughes | cac6cc7 | 2011-11-03 20:31:21 -0700 | [diff] [blame] | 283 | |
| 284 | self->GetJniEnv()->locals.AssertEmpty(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 285 | return self; |
| 286 | } |
| 287 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 288 | jobject GetWellKnownThreadGroup(JNIEnv* env, const char* field_name) { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 289 | ScopedLocalRef<jclass> thread_group_class(env, env->FindClass("java/lang/ThreadGroup")); |
| 290 | jfieldID fid = env->GetStaticFieldID(thread_group_class.get(), field_name, "Ljava/lang/ThreadGroup;"); |
| 291 | return env->GetStaticObjectField(thread_group_class.get(), fid); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 294 | void Thread::CreatePeer(const char* name, bool as_daemon) { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 295 | CHECK(Runtime::Current()->IsStarted()); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 296 | JNIEnv* env = jni_env_; |
| 297 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 298 | const char* field_name = (GetThinLockId() == ThreadList::kMainId) ? "mMain" : "mSystem"; |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 299 | ScopedLocalRef<jobject> thread_group(env, GetWellKnownThreadGroup(env, field_name)); |
| 300 | ScopedLocalRef<jobject> thread_name(env, env->NewStringUTF(name)); |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 301 | jint thread_priority = GetNativePriority(); |
Elliott Hughes | 5fe594f | 2011-09-08 12:33:17 -0700 | [diff] [blame] | 302 | jboolean thread_is_daemon = as_daemon; |
| 303 | |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 304 | ScopedLocalRef<jclass> c(env, env->FindClass("java/lang/Thread")); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 305 | ScopedLocalRef<jobject> peer(env, env->AllocObject(c.get())); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 306 | peer_ = DecodeJObject(peer.get()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 307 | if (peer_ == NULL) { |
| 308 | CHECK(IsExceptionPending()); |
Ian Rogers | 5d4bdc2 | 2011-11-02 22:15:43 -0700 | [diff] [blame] | 309 | return; |
| 310 | } |
| 311 | jmethodID mid = env->GetMethodID(c.get(), "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;IZ)V"); |
| 312 | env->CallNonvirtualVoidMethod(peer.get(), c.get(), mid, thread_group.get(), thread_name.get(), thread_priority, thread_is_daemon); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 313 | CHECK(!IsExceptionPending()) << " " << PrettyTypeOf(GetException()); |
Elliott Hughes | 7a3aeb4 | 2011-09-25 17:39:47 -0700 | [diff] [blame] | 314 | SetVmData(peer_, Thread::Current()); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 315 | |
Brian Carlstrom | 00fae58 | 2011-10-28 01:16:28 -0700 | [diff] [blame] | 316 | SirtRef<String> peer_thread_name(GetName()); |
| 317 | if (peer_thread_name.get() == NULL) { |
| 318 | // The Thread constructor should have set the Thread.name to a |
| 319 | // non-null value. However, because we can run without code |
| 320 | // available (in the compiler, in tests), we manually assign the |
| 321 | // fields the constructor should have set. |
| 322 | gThread_daemon->SetBoolean(peer_, thread_is_daemon); |
| 323 | gThread_group->SetObject(peer_, Decode<Object*>(env, thread_group.get())); |
| 324 | gThread_name->SetObject(peer_, Decode<Object*>(env, thread_name.get())); |
| 325 | gThread_priority->SetInt(peer_, thread_priority); |
| 326 | peer_thread_name.reset(GetName()); |
| 327 | } |
| 328 | // thread_name may have been null, so don't trust this to be non-null |
| 329 | if (peer_thread_name.get() != NULL) { |
| 330 | SetThreadName(GetName()->ToModifiedUtf8().c_str()); |
| 331 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 332 | |
| 333 | // Pre-allocate an OutOfMemoryError for the double-OOME case. |
| 334 | ThrowNewException("Ljava/lang/OutOfMemoryError;", |
| 335 | "OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack available"); |
| 336 | ScopedLocalRef<jthrowable> exception(env, env->ExceptionOccurred()); |
| 337 | env->ExceptionClear(); |
| 338 | pre_allocated_OutOfMemoryError_ = Decode<Throwable*>(env, exception.get()); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 339 | } |
| 340 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 341 | void Thread::InitStackHwm() { |
| 342 | pthread_attr_t attributes; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 343 | CHECK_PTHREAD_CALL(pthread_getattr_np, (pthread_self(), &attributes), __FUNCTION__); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 344 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 345 | void* temp_stack_base; |
| 346 | CHECK_PTHREAD_CALL(pthread_attr_getstack, (&attributes, &temp_stack_base, &stack_size_), |
| 347 | __FUNCTION__); |
| 348 | stack_base_ = reinterpret_cast<byte*>(temp_stack_base); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 349 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 350 | if (stack_size_ <= kStackOverflowReservedBytes) { |
| 351 | LOG(FATAL) << "attempt to attach a thread with a too-small stack (" << stack_size_ << " bytes)"; |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 352 | } |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 353 | |
Ian Rogers | 932746a | 2011-09-22 18:57:50 -0700 | [diff] [blame] | 354 | // Set stack_end_ to the bottom of the stack saving space of stack overflows |
| 355 | ResetDefaultStackEnd(); |
Elliott Hughes | 449b4bd | 2011-09-09 12:01:38 -0700 | [diff] [blame] | 356 | |
| 357 | // Sanity check. |
| 358 | int stack_variable; |
| 359 | CHECK_GT(&stack_variable, (void*) stack_end_); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 360 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 361 | CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), __FUNCTION__); |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 362 | } |
| 363 | |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 364 | void Thread::Dump(std::ostream& os, bool dump_pending_exception) const { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 365 | DumpState(os); |
| 366 | DumpStack(os); |
Elliott Hughes | e091855 | 2011-10-28 17:18:29 -0700 | [diff] [blame] | 367 | if (dump_pending_exception && IsExceptionPending()) { |
| 368 | os << "Pending " << PrettyTypeOf(GetException()) << " on thread:\n"; |
| 369 | os << GetException()->Dump(); |
| 370 | } |
Elliott Hughes | a095764 | 2011-09-02 14:27:33 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 373 | std::string GetSchedulerGroup(pid_t tid) { |
| 374 | // /proc/<pid>/group looks like this: |
| 375 | // 2:devices:/ |
| 376 | // 1:cpuacct,cpu:/ |
| 377 | // We want the third field from the line whose second field contains the "cpu" token. |
| 378 | std::string cgroup_file; |
| 379 | if (!ReadFileToString("/proc/self/cgroup", &cgroup_file)) { |
| 380 | return ""; |
| 381 | } |
| 382 | std::vector<std::string> cgroup_lines; |
| 383 | Split(cgroup_file, '\n', cgroup_lines); |
| 384 | for (size_t i = 0; i < cgroup_lines.size(); ++i) { |
| 385 | std::vector<std::string> cgroup_fields; |
| 386 | Split(cgroup_lines[i], ':', cgroup_fields); |
| 387 | std::vector<std::string> cgroups; |
| 388 | Split(cgroup_fields[1], ',', cgroups); |
| 389 | for (size_t i = 0; i < cgroups.size(); ++i) { |
| 390 | if (cgroups[i] == "cpu") { |
| 391 | return cgroup_fields[2].substr(1); // Skip the leading slash. |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | return ""; |
| 396 | } |
| 397 | |
Elliott Hughes | fc86162 | 2011-10-17 17:57:47 -0700 | [diff] [blame] | 398 | String* Thread::GetName() const { |
| 399 | return (peer_ != NULL) ? reinterpret_cast<String*>(gThread_name->GetObject(peer_)) : NULL; |
| 400 | } |
| 401 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 402 | void Thread::DumpState(std::ostream& os) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 403 | std::string thread_name("<native thread without managed peer>"); |
| 404 | std::string group_name; |
| 405 | int priority; |
| 406 | bool is_daemon = false; |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 407 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 408 | if (peer_ != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 409 | String* thread_name_string = reinterpret_cast<String*>(gThread_name->GetObject(peer_)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 410 | thread_name = (thread_name_string != NULL) ? thread_name_string->ToModifiedUtf8() : "<null>"; |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 411 | priority = gThread_priority->GetInt(peer_); |
| 412 | is_daemon = gThread_daemon->GetBoolean(peer_); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 413 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 414 | Object* thread_group = GetThreadGroup(); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 415 | if (thread_group != NULL) { |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 416 | String* group_name_string = reinterpret_cast<String*>(gThreadGroup_name->GetObject(thread_group)); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 417 | group_name = (group_name_string != NULL) ? group_name_string->ToModifiedUtf8() : "<null>"; |
| 418 | } |
| 419 | } else { |
| 420 | // This name may be truncated, but it's the best we can do in the absence of a managed peer. |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 421 | std::string stats; |
| 422 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/stat", GetTid()).c_str(), &stats)) { |
| 423 | size_t start = stats.find('(') + 1; |
| 424 | size_t end = stats.find(')') - start; |
| 425 | thread_name = stats.substr(start, end); |
| 426 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 427 | priority = GetNativePriority(); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 428 | } |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 429 | |
| 430 | int policy; |
| 431 | sched_param sp; |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 432 | CHECK_PTHREAD_CALL(pthread_getschedparam, (pthread_self(), &policy, &sp), __FUNCTION__); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 433 | |
| 434 | std::string scheduler_group(GetSchedulerGroup(GetTid())); |
| 435 | if (scheduler_group.empty()) { |
| 436 | scheduler_group = "default"; |
| 437 | } |
| 438 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 439 | os << '"' << thread_name << '"'; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 440 | if (is_daemon) { |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 441 | os << " daemon"; |
| 442 | } |
| 443 | os << " prio=" << priority |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 444 | << " tid=" << GetThinLockId() |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 445 | << " " << GetState() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 446 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 447 | os << " | group=\"" << group_name << "\"" |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 448 | << " sCount=" << suspend_count_ |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 449 | << " dsCount=" << debug_suspend_count_ |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 450 | << " obj=" << reinterpret_cast<void*>(peer_) |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 451 | << " self=" << reinterpret_cast<const void*>(this) << "\n"; |
| 452 | os << " | sysTid=" << GetTid() |
| 453 | << " nice=" << getpriority(PRIO_PROCESS, GetTid()) |
| 454 | << " sched=" << policy << "/" << sp.sched_priority |
| 455 | << " cgrp=" << scheduler_group |
Elliott Hughes | 3147a23 | 2011-10-12 15:55:07 -0700 | [diff] [blame] | 456 | << " handle=" << pthread_self() << "\n"; |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 457 | |
| 458 | // Grab the scheduler stats for this thread. |
| 459 | std::string scheduler_stats; |
| 460 | if (ReadFileToString(StringPrintf("/proc/self/task/%d/schedstat", GetTid()).c_str(), &scheduler_stats)) { |
| 461 | scheduler_stats.resize(scheduler_stats.size() - 1); // Lose the trailing '\n'. |
| 462 | } else { |
| 463 | scheduler_stats = "0 0 0"; |
| 464 | } |
| 465 | |
| 466 | int utime = 0; |
| 467 | int stime = 0; |
| 468 | int task_cpu = 0; |
Elliott Hughes | bfe487b | 2011-10-26 15:48:55 -0700 | [diff] [blame] | 469 | GetTaskStats(GetTid(), utime, stime, task_cpu); |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 470 | |
| 471 | os << " | schedstat=( " << scheduler_stats << " )" |
| 472 | << " utm=" << utime |
| 473 | << " stm=" << stime |
| 474 | << " core=" << task_cpu |
| 475 | << " HZ=" << sysconf(_SC_CLK_TCK) << "\n"; |
| 476 | } |
| 477 | |
Ian Rogers | b04f69f | 2011-10-17 00:40:54 -0700 | [diff] [blame] | 478 | void Thread::PushNativeToManagedRecord(NativeToManagedRecord* record) { |
| 479 | Method **sp = top_of_managed_stack_.GetSP(); |
| 480 | #ifndef NDEBUG |
| 481 | if (sp != NULL) { |
| 482 | Method* m = *sp; |
| 483 | Heap::VerifyObject(m); |
| 484 | DCHECK((m == NULL) || m->IsMethod()); |
| 485 | } |
| 486 | #endif |
| 487 | record->last_top_of_managed_stack_ = reinterpret_cast<void*>(sp); |
| 488 | record->last_top_of_managed_stack_pc_ = top_of_managed_stack_pc_; |
| 489 | record->link_ = native_to_managed_record_; |
| 490 | native_to_managed_record_ = record; |
| 491 | top_of_managed_stack_.SetSP(NULL); |
| 492 | } |
| 493 | |
| 494 | void Thread::PopNativeToManagedRecord(const NativeToManagedRecord& record) { |
| 495 | native_to_managed_record_ = record.link_; |
| 496 | top_of_managed_stack_.SetSP(reinterpret_cast<Method**>(record.last_top_of_managed_stack_)); |
| 497 | top_of_managed_stack_pc_ = record.last_top_of_managed_stack_pc_; |
| 498 | } |
| 499 | |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 500 | struct StackDumpVisitor : public Thread::StackVisitor { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 501 | StackDumpVisitor(std::ostream& os, const Thread* thread) |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 502 | : last_method(NULL), last_line_number(0), repetition_count(0), os(os), thread(thread), |
| 503 | frame_count(0) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 504 | } |
| 505 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 506 | virtual ~StackDumpVisitor() { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 507 | } |
| 508 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 509 | void VisitFrame(const Frame& frame, uintptr_t pc) { |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 510 | if (!frame.HasMethod()) { |
| 511 | return; |
| 512 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 513 | const int kMaxRepetition = 3; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 514 | Method* m = frame.GetMethod(); |
| 515 | Class* c = m->GetDeclaringClass(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 516 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | b861dc0 | 2011-11-14 17:00:05 -0800 | [diff] [blame] | 517 | const DexCache* dex_cache = c->GetDexCache(); |
| 518 | int line_number = -1; |
| 519 | if (dex_cache != NULL) { // be tolerant of bad input |
| 520 | const DexFile& dex_file = class_linker->FindDexFile(dex_cache); |
| 521 | line_number = dex_file.GetLineNumFromPC(m, m->ToDexPC(pc)); |
| 522 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 523 | if (line_number == last_line_number && last_method == m) { |
| 524 | repetition_count++; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 525 | } else { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 526 | if (repetition_count >= kMaxRepetition) { |
| 527 | os << " ... repeated " << (repetition_count - kMaxRepetition) << " times\n"; |
| 528 | } |
| 529 | repetition_count = 0; |
| 530 | last_line_number = line_number; |
| 531 | last_method = m; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 532 | } |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 533 | if (repetition_count < kMaxRepetition) { |
| 534 | os << " at " << PrettyMethod(m, false); |
| 535 | if (m->IsNative()) { |
| 536 | os << "(Native method)"; |
| 537 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 538 | mh.ChangeMethod(m); |
| 539 | const char* source_file(mh.GetDeclaringClassSourceFile()); |
| 540 | os << "(" << (source_file != NULL ? source_file : "unavailable") |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 541 | << ":" << line_number << ")"; |
| 542 | } |
| 543 | os << "\n"; |
| 544 | } |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 545 | |
| 546 | if (frame_count++ == 0) { |
| 547 | Monitor::DescribeWait(os, thread); |
| 548 | } |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 549 | } |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 550 | MethodHelper mh; |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 551 | Method* last_method; |
| 552 | int last_line_number; |
| 553 | int repetition_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 554 | std::ostream& os; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 555 | const Thread* thread; |
| 556 | int frame_count; |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 557 | }; |
| 558 | |
Elliott Hughes | d92bec4 | 2011-09-02 17:04:36 -0700 | [diff] [blame] | 559 | void Thread::DumpStack(std::ostream& os) const { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 560 | StackDumpVisitor dumper(os, this); |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 561 | WalkStack(&dumper); |
Elliott Hughes | e27955c | 2011-08-26 15:21:24 -0700 | [diff] [blame] | 562 | } |
| 563 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 564 | Thread::State Thread::SetState(Thread::State new_state) { |
| 565 | Thread::State old_state = state_; |
| 566 | if (old_state == new_state) { |
| 567 | return old_state; |
| 568 | } |
| 569 | |
| 570 | volatile void* raw = reinterpret_cast<volatile void*>(&state_); |
| 571 | volatile int32_t* addr = reinterpret_cast<volatile int32_t*>(raw); |
| 572 | |
| 573 | if (new_state == Thread::kRunnable) { |
| 574 | /* |
| 575 | * Change our status to Thread::kRunnable. The transition requires |
| 576 | * that we check for pending suspension, because the VM considers |
| 577 | * us to be "asleep" in all other states, and another thread could |
| 578 | * be performing a GC now. |
| 579 | * |
| 580 | * The order of operations is very significant here. One way to |
| 581 | * do this wrong is: |
| 582 | * |
| 583 | * GCing thread Our thread (in kNative) |
| 584 | * ------------ ---------------------- |
| 585 | * check suspend count (== 0) |
| 586 | * SuspendAllThreads() |
| 587 | * grab suspend-count lock |
| 588 | * increment all suspend counts |
| 589 | * release suspend-count lock |
| 590 | * check thread state (== kNative) |
| 591 | * all are suspended, begin GC |
| 592 | * set state to kRunnable |
| 593 | * (continue executing) |
| 594 | * |
| 595 | * We can correct this by grabbing the suspend-count lock and |
| 596 | * performing both of our operations (check suspend count, set |
| 597 | * state) while holding it, now we need to grab a mutex on every |
| 598 | * transition to kRunnable. |
| 599 | * |
| 600 | * What we do instead is change the order of operations so that |
| 601 | * the transition to kRunnable happens first. If we then detect |
| 602 | * that the suspend count is nonzero, we switch to kSuspended. |
| 603 | * |
| 604 | * Appropriate compiler and memory barriers are required to ensure |
| 605 | * that the operations are observed in the expected order. |
| 606 | * |
| 607 | * This does create a small window of opportunity where a GC in |
| 608 | * progress could observe what appears to be a running thread (if |
| 609 | * it happens to look between when we set to kRunnable and when we |
| 610 | * switch to kSuspended). At worst this only affects assertions |
| 611 | * and thread logging. (We could work around it with some sort |
| 612 | * of intermediate "pre-running" state that is generally treated |
| 613 | * as equivalent to running, but that doesn't seem worthwhile.) |
| 614 | * |
| 615 | * We can also solve this by combining the "status" and "suspend |
| 616 | * count" fields into a single 32-bit value. This trades the |
| 617 | * store/load barrier on transition to kRunnable for an atomic RMW |
| 618 | * op on all transitions and all suspend count updates (also, all |
| 619 | * accesses to status or the thread count require bit-fiddling). |
| 620 | * It also eliminates the brief transition through kRunnable when |
| 621 | * the thread is supposed to be suspended. This is possibly faster |
| 622 | * on SMP and slightly more correct, but less convenient. |
| 623 | */ |
| 624 | android_atomic_acquire_store(new_state, addr); |
| 625 | if (ANNOTATE_UNPROTECTED_READ(suspend_count_) != 0) { |
| 626 | Runtime::Current()->GetThreadList()->FullSuspendCheck(this); |
| 627 | } |
| 628 | } else { |
| 629 | /* |
| 630 | * Not changing to Thread::kRunnable. No additional work required. |
| 631 | * |
| 632 | * We use a releasing store to ensure that, if we were runnable, |
| 633 | * any updates we previously made to objects on the managed heap |
| 634 | * will be observed before the state change. |
| 635 | */ |
| 636 | android_atomic_release_store(new_state, addr); |
| 637 | } |
| 638 | |
| 639 | return old_state; |
| 640 | } |
| 641 | |
Elliott Hughes | 761928d | 2011-11-16 18:33:03 -0800 | [diff] [blame] | 642 | bool Thread::IsSuspended() { |
| 643 | return ANNOTATE_UNPROTECTED_READ(suspend_count_) != 0 && GetState() != Thread::kRunnable; |
| 644 | } |
| 645 | |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 646 | void Thread::WaitUntilSuspended() { |
| 647 | // TODO: dalvik dropped the waiting thread's priority after a while. |
| 648 | // TODO: dalvik timed out and aborted. |
| 649 | useconds_t delay = 0; |
| 650 | while (GetState() == Thread::kRunnable) { |
| 651 | useconds_t new_delay = delay * 2; |
| 652 | CHECK_GE(new_delay, delay); |
| 653 | delay = new_delay; |
| 654 | if (delay == 0) { |
| 655 | sched_yield(); |
| 656 | delay = 10000; |
| 657 | } else { |
| 658 | usleep(delay); |
| 659 | } |
| 660 | } |
| 661 | } |
| 662 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 663 | void Thread::ThreadExitCallback(void* arg) { |
| 664 | Thread* self = reinterpret_cast<Thread*>(arg); |
| 665 | LOG(FATAL) << "Native thread exited without calling DetachCurrentThread: " << *self; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 666 | } |
| 667 | |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 668 | void Thread::Startup() { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 669 | // Allocate a TLS slot. |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 670 | CHECK_PTHREAD_CALL(pthread_key_create, (&Thread::pthread_key_self_, Thread::ThreadExitCallback), "self key"); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 671 | |
| 672 | // Double-check the TLS slot allocation. |
| 673 | if (pthread_getspecific(pthread_key_self_) != NULL) { |
Elliott Hughes | be759c6 | 2011-09-08 19:38:21 -0700 | [diff] [blame] | 674 | LOG(FATAL) << "newly-created pthread TLS slot is not NULL"; |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 675 | } |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 676 | } |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 677 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 678 | // TODO: make more accessible? |
| 679 | Class* FindPrimitiveClassOrDie(ClassLinker* class_linker, char descriptor) { |
| 680 | Class* c = class_linker->FindPrimitiveClass(descriptor); |
| 681 | CHECK(c != NULL) << descriptor; |
| 682 | return c; |
| 683 | } |
| 684 | |
| 685 | // TODO: make more accessible? |
| 686 | Class* FindClassOrDie(ClassLinker* class_linker, const char* descriptor) { |
| 687 | Class* c = class_linker->FindSystemClass(descriptor); |
| 688 | CHECK(c != NULL) << descriptor; |
| 689 | return c; |
| 690 | } |
| 691 | |
| 692 | // TODO: make more accessible? |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 693 | Field* FindFieldOrDie(Class* c, const char* name, const char* descriptor) { |
| 694 | Field* f = c->FindDeclaredInstanceField(name, descriptor); |
| 695 | CHECK(f != NULL) << PrettyClass(c) << " " << name << " " << descriptor; |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 696 | return f; |
| 697 | } |
| 698 | |
| 699 | // TODO: make more accessible? |
| 700 | Method* FindMethodOrDie(Class* c, const char* name, const char* signature) { |
| 701 | Method* m = c->FindVirtualMethod(name, signature); |
| 702 | CHECK(m != NULL) << PrettyClass(c) << " " << name << " " << signature; |
| 703 | return m; |
| 704 | } |
| 705 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 706 | void Thread::FinishStartup() { |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 707 | CHECK(Runtime::Current()->IsStarted()); |
Brian Carlstrom | b82b687 | 2011-10-26 17:18:07 -0700 | [diff] [blame] | 708 | Thread* self = Thread::Current(); |
| 709 | |
| 710 | // Need to be kRunnable for FindClass |
| 711 | ScopedThreadStateChange tsc(self, Thread::kRunnable); |
| 712 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 713 | // Now the ClassLinker is ready, we can find the various Class*, Field*, and Method*s we need. |
| 714 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 715 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 716 | Class* Thread_class = FindClassOrDie(class_linker, "Ljava/lang/Thread;"); |
| 717 | Class* ThreadGroup_class = FindClassOrDie(class_linker, "Ljava/lang/ThreadGroup;"); |
| 718 | Class* UncaughtExceptionHandler_class = FindClassOrDie(class_linker, "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
| 719 | gThreadLock = FindClassOrDie(class_linker, "Ljava/lang/ThreadLock;"); |
| 720 | gThrowable = FindClassOrDie(class_linker, "Ljava/lang/Throwable;"); |
| 721 | |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 722 | gThread_daemon = FindFieldOrDie(Thread_class, "daemon", "Z"); |
| 723 | gThread_group = FindFieldOrDie(Thread_class, "group", "Ljava/lang/ThreadGroup;"); |
| 724 | gThread_lock = FindFieldOrDie(Thread_class, "lock", "Ljava/lang/ThreadLock;"); |
| 725 | gThread_name = FindFieldOrDie(Thread_class, "name", "Ljava/lang/String;"); |
| 726 | gThread_priority = FindFieldOrDie(Thread_class, "priority", "I"); |
| 727 | gThread_uncaughtHandler = FindFieldOrDie(Thread_class, "uncaughtHandler", "Ljava/lang/Thread$UncaughtExceptionHandler;"); |
| 728 | gThread_vmData = FindFieldOrDie(Thread_class, "vmData", "I"); |
| 729 | gThreadGroup_name = FindFieldOrDie(ThreadGroup_class, "name", "Ljava/lang/String;"); |
| 730 | gThreadLock_thread = FindFieldOrDie(gThreadLock, "thread", "Ljava/lang/Thread;"); |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 731 | |
| 732 | gThread_run = FindMethodOrDie(Thread_class, "run", "()V"); |
| 733 | gThreadGroup_removeThread = FindMethodOrDie(ThreadGroup_class, "removeThread", "(Ljava/lang/Thread;)V"); |
| 734 | gUncaughtExceptionHandler_uncaughtException = FindMethodOrDie(UncaughtExceptionHandler_class, |
| 735 | "uncaughtException", "(Ljava/lang/Thread;Ljava/lang/Throwable;)V"); |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 736 | |
| 737 | // Finish attaching the main thread. |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 738 | Thread::Current()->CreatePeer("main", false); |
Jesse Wilson | 9a6bae8 | 2011-11-14 14:57:30 -0500 | [diff] [blame] | 739 | |
| 740 | InitBoxingMethods(); |
| 741 | class_linker->RunRootClinits(); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 742 | } |
| 743 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 744 | void Thread::Shutdown() { |
Elliott Hughes | 8d768a9 | 2011-09-14 16:35:25 -0700 | [diff] [blame] | 745 | CHECK_PTHREAD_CALL(pthread_key_delete, (Thread::pthread_key_self_), "self key"); |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 746 | } |
| 747 | |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 748 | uint32_t Thread::LockOwnerFromThreadLock(Object* thread_lock) { |
| 749 | if (thread_lock == NULL || thread_lock->GetClass() != gThreadLock) { |
| 750 | return ThreadList::kInvalidId; |
| 751 | } |
| 752 | Object* managed_thread = gThreadLock_thread->GetObject(thread_lock); |
| 753 | if (managed_thread == NULL) { |
| 754 | return ThreadList::kInvalidId; |
| 755 | } |
| 756 | uintptr_t vmData = static_cast<uintptr_t>(gThread_vmData->GetInt(managed_thread)); |
| 757 | Thread* thread = reinterpret_cast<Thread*>(vmData); |
| 758 | if (thread == NULL) { |
| 759 | return ThreadList::kInvalidId; |
| 760 | } |
| 761 | return thread->GetThinLockId(); |
| 762 | } |
| 763 | |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 764 | Thread::Thread() |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 765 | : thin_lock_id_(0), |
| 766 | tid_(0), |
| 767 | peer_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 768 | top_of_managed_stack_(), |
| 769 | top_of_managed_stack_pc_(0), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 770 | wait_mutex_(new Mutex("Thread wait mutex")), |
| 771 | wait_cond_(new ConditionVariable("Thread wait condition variable")), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 772 | wait_monitor_(NULL), |
| 773 | interrupted_(false), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 774 | wait_next_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 775 | monitor_enter_object_(NULL), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 776 | card_table_(0), |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 777 | stack_end_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 778 | native_to_managed_record_(NULL), |
| 779 | top_sirt_(NULL), |
| 780 | jni_env_(NULL), |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 781 | state_(Thread::kNative), |
Elliott Hughes | dc33ad5 | 2011-09-16 19:46:51 -0700 | [diff] [blame] | 782 | self_(NULL), |
| 783 | runtime_(NULL), |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 784 | exception_(NULL), |
| 785 | suspend_count_(0), |
Elliott Hughes | 234ab15 | 2011-10-26 14:02:26 -0700 | [diff] [blame] | 786 | debug_suspend_count_(0), |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 787 | class_loader_override_(NULL), |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 788 | long_jump_context_(NULL), |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 789 | throwing_OutOfMemoryError_(false), |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 790 | pre_allocated_OutOfMemoryError_(NULL), |
| 791 | debug_invoke_req_(new DebugInvokeReq) { |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 792 | CHECK_EQ((sizeof(Thread) % 4), 0U) << sizeof(Thread); |
Elliott Hughes | dcc2474 | 2011-09-07 14:02:44 -0700 | [diff] [blame] | 793 | } |
| 794 | |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 795 | void MonitorExitVisitor(const Object* object, void*) { |
| 796 | Object* entered_monitor = const_cast<Object*>(object); |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 797 | entered_monitor->MonitorExit(Thread::Current()); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 798 | } |
| 799 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 800 | Thread::~Thread() { |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 801 | // On thread detach, all monitors entered with JNI MonitorEnter are automatically exited. |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 802 | if (jni_env_ != NULL) { |
| 803 | jni_env_->monitors.VisitRoots(MonitorExitVisitor, NULL); |
| 804 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 805 | |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 806 | if (peer_ != NULL) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 807 | |
| 808 | // this.vmData = 0; |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 809 | SetVmData(peer_, NULL); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 810 | |
Elliott Hughes | 872d4ec | 2011-10-21 17:07:15 -0700 | [diff] [blame] | 811 | Dbg::PostThreadDeath(this); |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 812 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 813 | // Thread.join() is implemented as an Object.wait() on the Thread.lock |
| 814 | // object. Signal anyone who is waiting. |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 815 | Thread* self = Thread::Current(); |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 816 | Object* lock = gThread_lock->GetObject(peer_); |
| 817 | // (This conditional is only needed for tests, where Thread.lock won't have been set.) |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 818 | if (lock != NULL) { |
| 819 | lock->MonitorEnter(self); |
| 820 | lock->NotifyAll(); |
| 821 | lock->MonitorExit(self); |
| 822 | } |
| 823 | } |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 824 | |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 825 | delete jni_env_; |
Elliott Hughes | 02b48d1 | 2011-09-07 17:15:51 -0700 | [diff] [blame] | 826 | jni_env_ = NULL; |
| 827 | |
| 828 | SetState(Thread::kTerminated); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 829 | |
| 830 | delete wait_cond_; |
| 831 | delete wait_mutex_; |
| 832 | |
| 833 | delete long_jump_context_; |
Elliott Hughes | 475fc23 | 2011-10-25 15:00:35 -0700 | [diff] [blame] | 834 | |
| 835 | delete debug_invoke_req_; |
Elliott Hughes | c1674ed | 2011-08-25 18:09:09 -0700 | [diff] [blame] | 836 | } |
| 837 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 838 | void Thread::HandleUncaughtExceptions() { |
| 839 | if (!IsExceptionPending()) { |
| 840 | return; |
| 841 | } |
| 842 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 843 | // Get and clear the exception. |
| 844 | Object* exception = GetException(); |
| 845 | ClearException(); |
| 846 | |
| 847 | // If the thread has its own handler, use that. |
| 848 | Object* handler = gThread_uncaughtHandler->GetObject(peer_); |
| 849 | if (handler == NULL) { |
| 850 | // Otherwise use the thread group's default handler. |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 851 | handler = GetThreadGroup(); |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 852 | } |
| 853 | |
| 854 | // Call the handler. |
| 855 | Method* m = handler->GetClass()->FindVirtualMethodForVirtualOrInterface(gUncaughtExceptionHandler_uncaughtException); |
| 856 | Object* args[2]; |
| 857 | args[0] = peer_; |
| 858 | args[1] = exception; |
| 859 | m->Invoke(this, handler, reinterpret_cast<byte*>(&args), NULL); |
| 860 | |
| 861 | // If the handler threw, clear that exception too. |
| 862 | ClearException(); |
| 863 | } |
| 864 | |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 865 | Object* Thread::GetThreadGroup() const { |
| 866 | return gThread_group->GetObject(peer_); |
| 867 | } |
| 868 | |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 869 | void Thread::RemoveFromThreadGroup() { |
| 870 | // this.group.removeThread(this); |
| 871 | // group can be null if we're in the compiler or a test. |
Elliott Hughes | a215526 | 2011-11-16 16:26:58 -0800 | [diff] [blame] | 872 | Object* group = GetThreadGroup(); |
Brian Carlstrom | 4514d3c | 2011-10-21 17:01:31 -0700 | [diff] [blame] | 873 | if (group != NULL) { |
| 874 | Method* m = group->GetClass()->FindVirtualMethodForVirtualOrInterface(gThreadGroup_removeThread); |
| 875 | Object* args = peer_; |
| 876 | m->Invoke(this, group, reinterpret_cast<byte*>(&args), NULL); |
| 877 | } |
| 878 | } |
| 879 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 880 | size_t Thread::NumSirtReferences() { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 881 | size_t count = 0; |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 882 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 883 | count += cur->NumberOfReferences(); |
| 884 | } |
| 885 | return count; |
| 886 | } |
| 887 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 888 | bool Thread::SirtContains(jobject obj) { |
| 889 | Object** sirt_entry = reinterpret_cast<Object**>(obj); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 890 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
| 891 | if (cur->Contains(sirt_entry)) { |
Ian Rogers | a8cd9f4 | 2011-08-19 16:43:41 -0700 | [diff] [blame] | 892 | return true; |
| 893 | } |
| 894 | } |
| 895 | return false; |
| 896 | } |
| 897 | |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 898 | void Thread::SirtVisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 899 | for (StackIndirectReferenceTable* cur = top_sirt_; cur; cur = cur->GetLink()) { |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 900 | size_t num_refs = cur->NumberOfReferences(); |
| 901 | for (size_t j = 0; j < num_refs; j++) { |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 902 | Object* object = cur->GetReference(j); |
Brian Carlstrom | 5e73f9c | 2011-10-11 11:28:12 -0700 | [diff] [blame] | 903 | if (object != NULL) { |
| 904 | visitor(object, arg); |
| 905 | } |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 906 | } |
| 907 | } |
| 908 | } |
| 909 | |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 910 | Object* Thread::DecodeJObject(jobject obj) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 911 | DCHECK(CanAccessDirectReferences()); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 912 | if (obj == NULL) { |
| 913 | return NULL; |
| 914 | } |
| 915 | IndirectRef ref = reinterpret_cast<IndirectRef>(obj); |
| 916 | IndirectRefKind kind = GetIndirectRefKind(ref); |
| 917 | Object* result; |
| 918 | switch (kind) { |
| 919 | case kLocal: |
| 920 | { |
Elliott Hughes | 69f5bc6 | 2011-08-24 09:26:14 -0700 | [diff] [blame] | 921 | IndirectReferenceTable& locals = jni_env_->locals; |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 922 | result = const_cast<Object*>(locals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 923 | break; |
| 924 | } |
| 925 | case kGlobal: |
| 926 | { |
| 927 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 928 | IndirectReferenceTable& globals = vm->globals; |
| 929 | MutexLock mu(vm->globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 930 | result = const_cast<Object*>(globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 931 | break; |
| 932 | } |
| 933 | case kWeakGlobal: |
| 934 | { |
| 935 | JavaVMExt* vm = Runtime::Current()->GetJavaVM(); |
| 936 | IndirectReferenceTable& weak_globals = vm->weak_globals; |
| 937 | MutexLock mu(vm->weak_globals_lock); |
Elliott Hughes | cf4c6c4 | 2011-09-01 15:16:42 -0700 | [diff] [blame] | 938 | result = const_cast<Object*>(weak_globals.Get(ref)); |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 939 | if (result == kClearedJniWeakGlobal) { |
| 940 | // This is a special case where it's okay to return NULL. |
| 941 | return NULL; |
| 942 | } |
| 943 | break; |
| 944 | } |
| 945 | case kSirtOrInvalid: |
| 946 | default: |
| 947 | // TODO: make stack indirect reference table lookup more efficient |
| 948 | // Check if this is a local reference in the SIRT |
| 949 | if (SirtContains(obj)) { |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 950 | result = *reinterpret_cast<Object**>(obj); // Read from SIRT |
Elliott Hughes | c5bfa8f | 2011-08-30 14:32:49 -0700 | [diff] [blame] | 951 | } else if (jni_env_->work_around_app_jni_bugs) { |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 952 | // Assume an invalid local reference is actually a direct pointer. |
| 953 | result = reinterpret_cast<Object*>(obj); |
| 954 | } else { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 955 | result = kInvalidIndirectRefObject; |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 956 | } |
| 957 | } |
| 958 | |
| 959 | if (result == NULL) { |
Elliott Hughes | a250199 | 2011-08-26 19:39:54 -0700 | [diff] [blame] | 960 | LOG(ERROR) << "JNI ERROR (app bug): use of deleted " << kind << ": " << obj; |
| 961 | JniAbort(NULL); |
| 962 | } else { |
| 963 | if (result != kInvalidIndirectRefObject) { |
| 964 | Heap::VerifyObject(result); |
| 965 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 966 | } |
Ian Rogers | 408f79a | 2011-08-23 18:22:33 -0700 | [diff] [blame] | 967 | return result; |
| 968 | } |
| 969 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 970 | class CountStackDepthVisitor : public Thread::StackVisitor { |
| 971 | public: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 972 | CountStackDepthVisitor() : depth_(0), skip_depth_(0), skipping_(true) {} |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 973 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 974 | virtual void VisitFrame(const Frame& frame, uintptr_t pc) { |
| 975 | // We want to skip frames up to and including the exception's constructor. |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 976 | // Note we also skip the frame if it doesn't have a method (namely the callee |
| 977 | // save frame) |
Brian Carlstrom | 25c3325 | 2011-09-18 15:58:35 -0700 | [diff] [blame] | 978 | DCHECK(gThrowable != NULL); |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 979 | if (skipping_ && frame.HasMethod() && !gThrowable->IsAssignableFrom(frame.GetMethod()->GetDeclaringClass())) { |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 980 | skipping_ = false; |
| 981 | } |
| 982 | if (!skipping_) { |
| 983 | ++depth_; |
| 984 | } else { |
| 985 | ++skip_depth_; |
| 986 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 987 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 988 | |
| 989 | int GetDepth() const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 990 | return depth_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 991 | } |
| 992 | |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 993 | int GetSkipDepth() const { |
| 994 | return skip_depth_; |
| 995 | } |
| 996 | |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 997 | private: |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 998 | uint32_t depth_; |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 999 | uint32_t skip_depth_; |
| 1000 | bool skipping_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1001 | }; |
| 1002 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1003 | class BuildInternalStackTraceVisitor : public Thread::StackVisitor { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1004 | public: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1005 | explicit BuildInternalStackTraceVisitor(int depth, int skip_depth, ScopedJniThreadState& ts) |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1006 | : skip_depth_(skip_depth), count_(0), pc_trace_(NULL), method_trace_(NULL), local_ref_(NULL) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1007 | // Allocate method trace with an extra slot that will hold the PC trace |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1008 | method_trace_ = Runtime::Current()->GetClassLinker()->AllocObjectArray<Object>(depth + 1); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1009 | if (method_trace_ == NULL) { |
| 1010 | return; |
| 1011 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1012 | // Register a local reference as IntArray::Alloc may trigger GC |
| 1013 | local_ref_ = AddLocalReference<jobject>(ts.Env(), method_trace_); |
| 1014 | pc_trace_ = IntArray::Alloc(depth); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1015 | if (pc_trace_ == NULL) { |
| 1016 | return; |
| 1017 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1018 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1019 | // Re-read after potential GC |
| 1020 | method_trace = Decode<ObjectArray<Object>*>(ts.Env(), local_ref_); |
| 1021 | #endif |
| 1022 | // Save PC trace in last element of method trace, also places it into the |
| 1023 | // object graph. |
| 1024 | method_trace_->Set(depth, pc_trace_); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1025 | } |
| 1026 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1027 | virtual ~BuildInternalStackTraceVisitor() {} |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1028 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1029 | virtual void VisitFrame(const Frame& frame, uintptr_t pc) { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1030 | if (method_trace_ == NULL || pc_trace_ == NULL) { |
| 1031 | return; // We're probably trying to fillInStackTrace for an OutOfMemoryError. |
| 1032 | } |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1033 | if (skip_depth_ > 0) { |
| 1034 | skip_depth_--; |
| 1035 | return; |
| 1036 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1037 | method_trace_->Set(count_, frame.GetMethod()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1038 | pc_trace_->Set(count_, pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1039 | ++count_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1040 | } |
| 1041 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1042 | jobject GetInternalStackTrace() const { |
| 1043 | return local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | private: |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1047 | // How many more frames to skip. |
| 1048 | int32_t skip_depth_; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1049 | // Current position down stack trace |
| 1050 | uint32_t count_; |
| 1051 | // Array of return PC values |
| 1052 | IntArray* pc_trace_; |
| 1053 | // An array of the methods on the stack, the last entry is a reference to the |
| 1054 | // PC trace |
| 1055 | ObjectArray<Object>* method_trace_; |
| 1056 | // Local indirect reference table entry for method trace |
| 1057 | jobject local_ref_; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1058 | }; |
| 1059 | |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1060 | // TODO: remove this. |
| 1061 | uintptr_t ManglePc(uintptr_t pc) { |
| 1062 | // Move the PC back 2 bytes as a call will frequently terminate the |
| 1063 | // decoding of a particular instruction and we want to make sure we |
| 1064 | // get the Dex PC of the instruction with the call and not the |
| 1065 | // instruction following. |
| 1066 | if (pc > 0) { pc -= 2; } |
| 1067 | return pc; |
| 1068 | } |
| 1069 | |
| 1070 | // TODO: remove this. |
| 1071 | uintptr_t DemanglePc(uintptr_t pc) { |
| 1072 | // Revert mangling for the case where we need the PC to return to the upcall |
| 1073 | return pc + 2; |
| 1074 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1075 | |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1076 | void Thread::PushSirt(StackIndirectReferenceTable* sirt) { |
| 1077 | sirt->SetLink(top_sirt_); |
| 1078 | top_sirt_ = sirt; |
| 1079 | } |
| 1080 | |
| 1081 | StackIndirectReferenceTable* Thread::PopSirt() { |
| 1082 | CHECK(top_sirt_ != NULL); |
| 1083 | StackIndirectReferenceTable* sirt = top_sirt_; |
| 1084 | top_sirt_ = top_sirt_->GetLink(); |
| 1085 | return sirt; |
| 1086 | } |
| 1087 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1088 | void Thread::WalkStack(StackVisitor* visitor) const { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1089 | Frame frame = GetTopOfStack(); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1090 | uintptr_t pc = ManglePc(top_of_managed_stack_pc_); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1091 | // TODO: enable this CHECK after native_to_managed_record_ is initialized during startup. |
| 1092 | // CHECK(native_to_managed_record_ != NULL); |
| 1093 | NativeToManagedRecord* record = native_to_managed_record_; |
| 1094 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1095 | while (frame.GetSP() != 0) { |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1096 | for ( ; frame.GetMethod() != 0; frame.Next()) { |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 1097 | // DCHECK(frame.GetMethod()->IsWithinCode(pc)); // TODO: restore IsWithinCode |
Shih-wei Liao | 3ddac99 | 2011-10-07 00:48:09 -0700 | [diff] [blame] | 1098 | visitor->VisitFrame(frame, pc); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1099 | pc = ManglePc(frame.GetReturnPC()); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1100 | } |
| 1101 | if (record == NULL) { |
| 1102 | break; |
| 1103 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1104 | // last_tos should return Frame instead of sp? |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1105 | frame.SetSP(reinterpret_cast<Method**>(record->last_top_of_managed_stack_)); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1106 | pc = ManglePc(record->last_top_of_managed_stack_pc_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1107 | record = record->link_; |
| 1108 | } |
| 1109 | } |
| 1110 | |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1111 | void Thread::WalkStackUntilUpCall(StackVisitor* visitor, bool include_upcall) const { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1112 | Frame frame = GetTopOfStack(); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1113 | uintptr_t pc = ManglePc(top_of_managed_stack_pc_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1114 | |
| 1115 | if (frame.GetSP() != 0) { |
| 1116 | for ( ; frame.GetMethod() != 0; frame.Next()) { |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 1117 | // DCHECK(frame.GetMethod()->IsWithinCode(pc)); // TODO: restore IsWithinCode |
Shih-wei Liao | 3ddac99 | 2011-10-07 00:48:09 -0700 | [diff] [blame] | 1118 | visitor->VisitFrame(frame, pc); |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1119 | pc = ManglePc(frame.GetReturnPC()); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1120 | } |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1121 | if (include_upcall) { |
| 1122 | visitor->VisitFrame(frame, pc); |
| 1123 | } |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1124 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1125 | } |
| 1126 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1127 | jobject Thread::CreateInternalStackTrace(JNIEnv* env) const { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1128 | // Compute depth of stack |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1129 | CountStackDepthVisitor count_visitor; |
| 1130 | WalkStack(&count_visitor); |
| 1131 | int32_t depth = count_visitor.GetDepth(); |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1132 | int32_t skip_depth = count_visitor.GetSkipDepth(); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 1133 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1134 | // Transition into runnable state to work on Object*/Array* |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1135 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1136 | |
| 1137 | // Build internal stack trace |
Elliott Hughes | 29f2742 | 2011-09-18 16:02:18 -0700 | [diff] [blame] | 1138 | BuildInternalStackTraceVisitor build_trace_visitor(depth, skip_depth, ts); |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1139 | WalkStack(&build_trace_visitor); |
Shih-wei Liao | 4417536 | 2011-08-28 16:59:17 -0700 | [diff] [blame] | 1140 | |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1141 | return build_trace_visitor.GetInternalStackTrace(); |
| 1142 | } |
| 1143 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1144 | jobjectArray Thread::InternalStackTraceToStackTraceElementArray(JNIEnv* env, jobject internal, |
| 1145 | jobjectArray output_array, int* stack_depth) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1146 | // Transition into runnable state to work on Object*/Array* |
| 1147 | ScopedJniThreadState ts(env); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1148 | // Decode the internal stack trace into the depth, method trace and PC trace |
| 1149 | ObjectArray<Object>* method_trace = |
| 1150 | down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
Ian Rogers | 9074b99 | 2011-10-26 17:41:55 -0700 | [diff] [blame] | 1151 | int32_t depth = method_trace->GetLength() - 1; |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1152 | IntArray* pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1153 | |
| 1154 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1155 | |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1156 | jobjectArray result; |
| 1157 | ObjectArray<StackTraceElement>* java_traces; |
| 1158 | if (output_array != NULL) { |
| 1159 | // Reuse the array we were given. |
| 1160 | result = output_array; |
| 1161 | java_traces = reinterpret_cast<ObjectArray<StackTraceElement>*>(Decode<Array*>(env, |
| 1162 | output_array)); |
| 1163 | // ...adjusting the number of frames we'll write to not exceed the array length. |
| 1164 | depth = std::min(depth, java_traces->GetLength()); |
| 1165 | } else { |
| 1166 | // Create java_trace array and place in local reference table |
| 1167 | java_traces = class_linker->AllocStackTraceElementArray(depth); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1168 | if (java_traces == NULL) { |
| 1169 | return NULL; |
| 1170 | } |
Elliott Hughes | 01158d7 | 2011-09-19 19:47:10 -0700 | [diff] [blame] | 1171 | result = AddLocalReference<jobjectArray>(ts.Env(), java_traces); |
| 1172 | } |
| 1173 | |
| 1174 | if (stack_depth != NULL) { |
| 1175 | *stack_depth = depth; |
| 1176 | } |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1177 | |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1178 | MethodHelper mh; |
Shih-wei Liao | 9b576b4 | 2011-08-29 01:45:07 -0700 | [diff] [blame] | 1179 | for (int32_t i = 0; i < depth; ++i) { |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1180 | // Prepare parameters for StackTraceElement(String cls, String method, String file, int line) |
| 1181 | Method* method = down_cast<Method*>(method_trace->Get(i)); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1182 | mh.ChangeMethod(method); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1183 | uint32_t native_pc = pc_trace->Get(i); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1184 | int32_t line_number = mh.GetLineNumFromNativePC(native_pc); |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1185 | // Allocate element, potentially triggering GC |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1186 | // TODO: reuse class_name_object via Class::name_? |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1187 | std::string class_name(PrettyDescriptor(mh.GetDeclaringClassDescriptor())); |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1188 | SirtRef<String> class_name_object(String::AllocFromModifiedUtf8(class_name.c_str())); |
| 1189 | if (class_name_object.get() == NULL) { |
| 1190 | return NULL; |
| 1191 | } |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1192 | SirtRef<String> method_name_object(String::AllocFromModifiedUtf8(mh.GetName())); |
| 1193 | if (method_name_object.get() == NULL) { |
| 1194 | return NULL; |
| 1195 | } |
| 1196 | SirtRef<String> |
| 1197 | source_name_object(String::AllocFromModifiedUtf8(mh.GetDeclaringClassSourceFile())); |
| 1198 | if (source_name_object.get() == NULL) { |
| 1199 | return NULL; |
| 1200 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1201 | StackTraceElement* obj = StackTraceElement::Alloc(class_name_object.get(), |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1202 | method_name_object.get(), |
| 1203 | source_name_object.get(), |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1204 | line_number); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1205 | if (obj == NULL) { |
| 1206 | return NULL; |
| 1207 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1208 | #ifdef MOVING_GARBAGE_COLLECTOR |
| 1209 | // Re-read after potential GC |
| 1210 | java_traces = Decode<ObjectArray<Object>*>(ts.Env(), result); |
| 1211 | method_trace = down_cast<ObjectArray<Object>*>(Decode<Object*>(ts.Env(), internal)); |
| 1212 | pc_trace = down_cast<IntArray*>(method_trace->Get(depth)); |
| 1213 | #endif |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1214 | java_traces->Set(i, obj); |
| 1215 | } |
Ian Rogers | aaa2080 | 2011-09-11 21:47:37 -0700 | [diff] [blame] | 1216 | return result; |
Shih-wei Liao | 55df06b | 2011-08-26 14:39:27 -0700 | [diff] [blame] | 1217 | } |
| 1218 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1219 | void Thread::ThrowNewExceptionF(const char* exception_class_descriptor, const char* fmt, ...) { |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1220 | va_list args; |
| 1221 | va_start(args, fmt); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1222 | ThrowNewExceptionV(exception_class_descriptor, fmt, args); |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1223 | va_end(args); |
Elliott Hughes | 4a2b417 | 2011-09-20 17:08:25 -0700 | [diff] [blame] | 1224 | } |
| 1225 | |
| 1226 | void Thread::ThrowNewExceptionV(const char* exception_class_descriptor, const char* fmt, va_list ap) { |
| 1227 | std::string msg; |
| 1228 | StringAppendV(&msg, fmt, ap); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1229 | ThrowNewException(exception_class_descriptor, msg.c_str()); |
| 1230 | } |
Elliott Hughes | 37f7a40 | 2011-08-22 18:56:01 -0700 | [diff] [blame] | 1231 | |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 1232 | void Thread::ThrowNewException(const char* exception_class_descriptor, const char* msg) { |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1233 | // Convert "Ljava/lang/Exception;" into JNI-style "java/lang/Exception". |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1234 | CHECK_EQ('L', exception_class_descriptor[0]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1235 | std::string descriptor(exception_class_descriptor + 1); |
Ian Rogers | 0cfe1fb | 2011-08-26 03:29:44 -0700 | [diff] [blame] | 1236 | CHECK_EQ(';', descriptor[descriptor.length() - 1]); |
Elliott Hughes | e5b0dc8 | 2011-08-23 09:59:02 -0700 | [diff] [blame] | 1237 | descriptor.erase(descriptor.length() - 1); |
| 1238 | |
| 1239 | JNIEnv* env = GetJniEnv(); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1240 | ScopedLocalRef<jclass> exception_class(env, env->FindClass(descriptor.c_str())); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1241 | if (exception_class.get() == NULL) { |
| 1242 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI FindClass failed: " |
| 1243 | << PrettyTypeOf(GetException()); |
| 1244 | CHECK(IsExceptionPending()); |
| 1245 | return; |
| 1246 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1247 | int rc = env->ThrowNew(exception_class.get(), msg); |
Elliott Hughes | 3064683 | 2011-10-13 16:59:46 -0700 | [diff] [blame] | 1248 | if (rc != JNI_OK) { |
| 1249 | LOG(ERROR) << "Couldn't throw new " << descriptor << " because JNI ThrowNew failed: " |
| 1250 | << PrettyTypeOf(GetException()); |
| 1251 | CHECK(IsExceptionPending()); |
| 1252 | return; |
| 1253 | } |
Elliott Hughes | a5b897e | 2011-08-16 11:33:06 -0700 | [diff] [blame] | 1254 | } |
| 1255 | |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1256 | void Thread::ThrowOutOfMemoryError(Class* c, size_t byte_count) { |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1257 | std::string msg(StringPrintf("Failed to allocate a %zd-byte %s", byte_count, |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1258 | PrettyDescriptor(c).c_str())); |
Elliott Hughes | 2ced6a5 | 2011-10-16 18:44:48 -0700 | [diff] [blame] | 1259 | ThrowOutOfMemoryError(msg.c_str()); |
| 1260 | } |
| 1261 | |
| 1262 | void Thread::ThrowOutOfMemoryError(const char* msg) { |
| 1263 | LOG(ERROR) << StringPrintf("Throwing OutOfMemoryError \"%s\"%s", |
| 1264 | msg, (throwing_OutOfMemoryError_ ? " (recursive case)" : "")); |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1265 | if (!throwing_OutOfMemoryError_) { |
| 1266 | throwing_OutOfMemoryError_ = true; |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1267 | ThrowNewException("Ljava/lang/OutOfMemoryError;", NULL); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1268 | } else { |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1269 | SetException(pre_allocated_OutOfMemoryError_); |
Elliott Hughes | 418dfe7 | 2011-10-06 18:56:27 -0700 | [diff] [blame] | 1270 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1271 | throwing_OutOfMemoryError_ = false; |
Elliott Hughes | 79082e3 | 2011-08-25 12:07:32 -0700 | [diff] [blame] | 1272 | } |
| 1273 | |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1274 | |
Elliott Hughes | 498508c | 2011-10-17 14:58:22 -0700 | [diff] [blame] | 1275 | Thread* Thread::CurrentFromGdb() { |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1276 | return Thread::Current(); |
| 1277 | } |
| 1278 | |
| 1279 | void Thread::DumpFromGdb() const { |
Brian Carlstrom | 6b4ef02 | 2011-10-23 14:59:04 -0700 | [diff] [blame] | 1280 | std::ostringstream ss; |
| 1281 | Dump(ss); |
| 1282 | std::string str = ss.str(); |
| 1283 | // log to stderr for debugging command line processes |
| 1284 | std::cerr << str; |
| 1285 | #ifdef HAVE_ANDROID_OS |
| 1286 | // log to logcat for debugging frameworks processes |
| 1287 | LOG(INFO) << str; |
| 1288 | #endif |
Elliott Hughes | accd83d | 2011-10-17 14:25:58 -0700 | [diff] [blame] | 1289 | } |
| 1290 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1291 | class CatchBlockStackVisitor : public Thread::StackVisitor { |
| 1292 | public: |
| 1293 | CatchBlockStackVisitor(Class* to_find, Context* ljc) |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1294 | : found_(false), to_find_(to_find), long_jump_context_(ljc), native_method_count_(0) { |
| 1295 | #ifndef NDEBUG |
| 1296 | handler_pc_ = 0xEBADC0DE; |
| 1297 | handler_frame_.SetSP(reinterpret_cast<Method**>(0xEBADF00D)); |
| 1298 | #endif |
| 1299 | } |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1300 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1301 | virtual void VisitFrame(const Frame& fr, uintptr_t pc) { |
| 1302 | if (!found_) { |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1303 | Method* method = fr.GetMethod(); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1304 | if (method == NULL) { |
| 1305 | // This is the upcall, we remember the frame and last_pc so that we may |
| 1306 | // long jump to them |
Elliott Hughes | a43cb5e | 2011-10-07 11:37:59 -0700 | [diff] [blame] | 1307 | handler_pc_ = DemanglePc(pc); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1308 | handler_frame_ = fr; |
| 1309 | return; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1310 | } |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1311 | uint32_t dex_pc = DexFile::kDexNoIndex; |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 1312 | if (method->IsCalleeSaveMethod()) { |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 1313 | // ignore callee save method |
| 1314 | } else if (method->IsNative()) { |
| 1315 | native_method_count_++; |
| 1316 | } else { |
Ian Rogers | 9086572 | 2011-09-19 11:11:44 -0700 | [diff] [blame] | 1317 | dex_pc = method->ToDexPC(pc); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1318 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1319 | if (dex_pc != DexFile::kDexNoIndex) { |
| 1320 | uint32_t found_dex_pc = method->FindCatchBlock(to_find_, dex_pc); |
| 1321 | if (found_dex_pc != DexFile::kDexNoIndex) { |
| 1322 | found_ = true; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1323 | handler_pc_ = method->ToNativePC(found_dex_pc); |
| 1324 | handler_frame_ = fr; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1325 | } |
| 1326 | } |
| 1327 | if (!found_) { |
| 1328 | // Caller may be handler, fill in callee saves in context |
| 1329 | long_jump_context_->FillCalleeSaves(fr); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1330 | } |
| 1331 | } |
| 1332 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1333 | |
| 1334 | // Did we find a catch block yet? |
| 1335 | bool found_; |
| 1336 | // The type of the exception catch block to find |
| 1337 | Class* to_find_; |
| 1338 | // Frame with found handler or last frame if no handler found |
| 1339 | Frame handler_frame_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1340 | // PC to branch to for the handler |
| 1341 | uintptr_t handler_pc_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1342 | // Context that will be the target of the long jump |
| 1343 | Context* long_jump_context_; |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1344 | // Number of native methods passed in crawl (equates to number of SIRTs to pop) |
| 1345 | uint32_t native_method_count_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1346 | }; |
| 1347 | |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1348 | void Thread::DeliverException() { |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1349 | const bool kDebugExceptionDelivery = false; |
| 1350 | Throwable *exception = GetException(); // Get exception from thread |
Ian Rogers | ff1ed47 | 2011-09-20 13:46:24 -0700 | [diff] [blame] | 1351 | CHECK(exception != NULL); |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1352 | // Don't leave exception visible while we try to find the handler, which may cause class |
| 1353 | // resolution |
| 1354 | ClearException(); |
| 1355 | if (kDebugExceptionDelivery) { |
| 1356 | DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception) << std::endl); |
| 1357 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1358 | |
| 1359 | Context* long_jump_context = GetLongJumpContext(); |
| 1360 | CatchBlockStackVisitor catch_finder(exception->GetClass(), long_jump_context); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1361 | WalkStackUntilUpCall(&catch_finder, true); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1362 | |
Ian Rogers | 28ad40d | 2011-10-27 15:19:26 -0700 | [diff] [blame] | 1363 | if (kDebugExceptionDelivery) { |
| 1364 | Method* handler_method = catch_finder.handler_frame_.GetMethod(); |
| 1365 | if (handler_method == NULL) { |
| 1366 | LOG(INFO) << "Handler is upcall"; |
| 1367 | } else { |
| 1368 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1369 | const DexFile& dex_file = |
| 1370 | class_linker->FindDexFile(handler_method->GetDeclaringClass()->GetDexCache()); |
| 1371 | int line_number = dex_file.GetLineNumFromPC(handler_method, |
| 1372 | handler_method->ToDexPC(catch_finder.handler_pc_)); |
| 1373 | LOG(INFO) << "Handler: " << PrettyMethod(handler_method) |
| 1374 | << " (line: " << line_number << ")"; |
| 1375 | } |
| 1376 | } |
| 1377 | SetException(exception); |
Ian Rogers | 67375ac | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1378 | long_jump_context->SetSP(reinterpret_cast<intptr_t>(catch_finder.handler_frame_.GetSP())); |
| 1379 | long_jump_context->SetPC(catch_finder.handler_pc_); |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1380 | long_jump_context->DoLongJump(); |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1381 | } |
| 1382 | |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1383 | Context* Thread::GetLongJumpContext() { |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1384 | Context* result = long_jump_context_; |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1385 | if (result == NULL) { |
| 1386 | result = Context::Create(); |
Elliott Hughes | 85d1545 | 2011-09-16 17:33:01 -0700 | [diff] [blame] | 1387 | long_jump_context_ = result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1388 | } |
Ian Rogers | bdb0391 | 2011-09-14 00:55:44 -0700 | [diff] [blame] | 1389 | return result; |
Shih-wei Liao | 1a18c8c | 2011-08-14 17:47:36 -0700 | [diff] [blame] | 1390 | } |
| 1391 | |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1392 | const Method* Thread::GetCurrentMethod() const { |
| 1393 | Method* m = top_of_managed_stack_.GetMethod(); |
| 1394 | // We use JNI internally for exception throwing, so it's possible to arrive |
| 1395 | // here via a "FromCode" function, in which case there's a synthetic |
| 1396 | // callee-save method at the top of the stack. These shouldn't be user-visible, |
| 1397 | // so if we find one, skip it and return the compiled method underneath. |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1398 | if (m != NULL && m->IsCalleeSaveMethod()) { |
Elliott Hughes | 9fd66f5 | 2011-10-16 12:13:26 -0700 | [diff] [blame] | 1399 | Frame f = top_of_managed_stack_; |
| 1400 | f.Next(); |
| 1401 | m = f.GetMethod(); |
| 1402 | } |
| 1403 | return m; |
| 1404 | } |
| 1405 | |
jeffhao | 33dc771 | 2011-11-09 17:54:24 -0800 | [diff] [blame] | 1406 | uint32_t Thread::GetCurrentReturnPc() const { |
| 1407 | if (top_of_managed_stack_.GetMethod() == NULL) { |
| 1408 | return 0; |
| 1409 | } |
| 1410 | return ManglePc(top_of_managed_stack_.GetReturnPC()); |
| 1411 | } |
| 1412 | |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1413 | bool Thread::HoldsLock(Object* object) { |
| 1414 | if (object == NULL) { |
| 1415 | return false; |
| 1416 | } |
Brian Carlstrom | 24a3c2e | 2011-10-17 18:07:52 -0700 | [diff] [blame] | 1417 | return object->GetThinLockId() == thin_lock_id_; |
Elliott Hughes | 5f79133 | 2011-09-15 17:45:30 -0700 | [diff] [blame] | 1418 | } |
| 1419 | |
Elliott Hughes | 038a806 | 2011-09-18 14:12:41 -0700 | [diff] [blame] | 1420 | bool Thread::IsDaemon() { |
| 1421 | return gThread_daemon->GetBoolean(peer_); |
| 1422 | } |
| 1423 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1424 | class ReferenceMapVisitor : public Thread::StackVisitor { |
| 1425 | public: |
| 1426 | ReferenceMapVisitor(Context* context, Heap::RootVisitor* root_visitor, void* arg) : |
| 1427 | context_(context), root_visitor_(root_visitor), arg_(arg) { |
| 1428 | } |
| 1429 | |
| 1430 | void VisitFrame(const Frame& frame, uintptr_t pc) { |
| 1431 | Method* m = frame.GetMethod(); |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1432 | if (false) { |
| 1433 | LOG(INFO) << "Visiting stack roots in " << PrettyMethod(m, false) |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1434 | << StringPrintf("@ PC:%04x", m->ToDexPC(pc)); |
| 1435 | |
Brian Carlstrom | 6a4be3a | 2011-10-20 16:34:03 -0700 | [diff] [blame] | 1436 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1437 | // Process register map (which native and callee save methods don't have) |
Ian Rogers | 3891c77 | 2011-12-06 15:38:28 -0800 | [diff] [blame^] | 1438 | if (!m->IsNative() && !m->IsCalleeSaveMethod() && !m->IsProxyMethod()) { |
Ian Rogers | d81871c | 2011-10-03 13:57:23 -0700 | [diff] [blame] | 1439 | verifier::PcToReferenceMap map(m); |
| 1440 | const uint8_t* reg_bitmap = map.FindBitMap(m->ToDexPC(pc)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1441 | CHECK(reg_bitmap != NULL); |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1442 | const VmapTable vmap_table(m->GetVmapTableRaw()); |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1443 | const art::DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem(); |
| 1444 | DCHECK(code_item != NULL); // can't be NULL or how would we compile its instructions? |
| 1445 | uint32_t core_spills = m->GetCoreSpillMask(); |
| 1446 | uint32_t fp_spills = m->GetFpSpillMask(); |
| 1447 | size_t frame_size = m->GetFrameSizeInBytes(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1448 | // For all dex registers in the bitmap |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1449 | size_t num_regs = std::min(map.RegWidth() * 8, |
| 1450 | static_cast<size_t>(code_item->registers_size_)); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1451 | for (size_t reg = 0; reg < num_regs; ++reg) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1452 | // Does this register hold a reference? |
| 1453 | if (TestBitmap(reg, reg_bitmap)) { |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1454 | uint32_t vmap_offset; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1455 | Object* ref; |
Elliott Hughes | 68fdbd0 | 2011-11-29 19:22:47 -0800 | [diff] [blame] | 1456 | if (vmap_table.IsInContext(reg, vmap_offset)) { |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1457 | // Compute the register we need to load from the context |
| 1458 | uint32_t spill_mask = m->GetCoreSpillMask(); |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1459 | CHECK_LT(vmap_offset, static_cast<uint32_t>(__builtin_popcount(spill_mask))); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1460 | uint32_t matches = 0; |
| 1461 | uint32_t spill_shifts = 0; |
| 1462 | while (matches != (vmap_offset + 1)) { |
Brian Carlstrom | 0dd7dda | 2011-10-25 15:47:53 -0700 | [diff] [blame] | 1463 | DCHECK_NE(spill_mask, 0u); |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1464 | matches += spill_mask & 1; // Add 1 if the low bit is set |
| 1465 | spill_mask >>= 1; |
| 1466 | spill_shifts++; |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1467 | } |
Ian Rogers | f57c47c | 2011-10-06 00:06:17 -0700 | [diff] [blame] | 1468 | spill_shifts--; // wind back one as we want the last match |
| 1469 | ref = reinterpret_cast<Object*>(context_->GetGPR(spill_shifts)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1470 | } else { |
Ian Rogers | 6d4d9fc | 2011-11-30 16:24:48 -0800 | [diff] [blame] | 1471 | ref = reinterpret_cast<Object*>(frame.GetVReg(code_item, core_spills, fp_spills, |
| 1472 | frame_size, reg)); |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1473 | } |
Shih-wei Liao | 4f894e3 | 2011-09-27 21:33:19 -0700 | [diff] [blame] | 1474 | if (ref != NULL) { |
| 1475 | root_visitor_(ref, arg_); |
| 1476 | } |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1477 | } |
| 1478 | } |
| 1479 | } |
| 1480 | context_->FillCalleeSaves(frame); |
| 1481 | } |
| 1482 | |
| 1483 | private: |
| 1484 | bool TestBitmap(int reg, const uint8_t* reg_vector) { |
| 1485 | return ((reg_vector[reg / 8] >> (reg % 8)) & 0x01) != 0; |
| 1486 | } |
| 1487 | |
| 1488 | // Context used to build up picture of callee saves |
| 1489 | Context* context_; |
| 1490 | // Call-back when we visit a root |
| 1491 | Heap::RootVisitor* root_visitor_; |
| 1492 | // Argument to call-back |
| 1493 | void* arg_; |
| 1494 | }; |
| 1495 | |
| 1496 | void Thread::VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
Elliott Hughes | d369bb7 | 2011-09-12 14:41:14 -0700 | [diff] [blame] | 1497 | if (exception_ != NULL) { |
| 1498 | visitor(exception_, arg); |
| 1499 | } |
| 1500 | if (peer_ != NULL) { |
| 1501 | visitor(peer_, arg); |
| 1502 | } |
Elliott Hughes | 726079d | 2011-10-07 18:43:44 -0700 | [diff] [blame] | 1503 | if (pre_allocated_OutOfMemoryError_ != NULL) { |
| 1504 | visitor(pre_allocated_OutOfMemoryError_, arg); |
| 1505 | } |
Brian Carlstrom | 40381fb | 2011-10-19 14:13:40 -0700 | [diff] [blame] | 1506 | if (class_loader_override_ != NULL) { |
| 1507 | visitor(class_loader_override_, arg); |
| 1508 | } |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1509 | jni_env_->locals.VisitRoots(visitor, arg); |
| 1510 | jni_env_->monitors.VisitRoots(visitor, arg); |
Shih-wei Liao | 8dfc9d5 | 2011-09-28 18:06:15 -0700 | [diff] [blame] | 1511 | |
| 1512 | SirtVisitRoots(visitor, arg); |
| 1513 | |
Ian Rogers | d6b1f61 | 2011-09-27 13:38:14 -0700 | [diff] [blame] | 1514 | // Cheat and steal the long jump context. Assume that we are not doing a GC during exception |
| 1515 | // delivery. |
| 1516 | Context* context = GetLongJumpContext(); |
| 1517 | // Visit roots on this thread's stack |
| 1518 | ReferenceMapVisitor mapper(context, visitor, arg); |
| 1519 | WalkStack(&mapper); |
Elliott Hughes | 410c0c8 | 2011-09-01 17:58:25 -0700 | [diff] [blame] | 1520 | } |
| 1521 | |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1522 | static const char* kStateNames[] = { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1523 | "Terminated", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1524 | "Runnable", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1525 | "TimedWaiting", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1526 | "Blocked", |
| 1527 | "Waiting", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1528 | "Initializing", |
| 1529 | "Starting", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1530 | "Native", |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1531 | "VmWait", |
| 1532 | "Suspended", |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1533 | }; |
| 1534 | std::ostream& operator<<(std::ostream& os, const Thread::State& state) { |
Elliott Hughes | 8e4aac5 | 2011-09-26 17:03:36 -0700 | [diff] [blame] | 1535 | int32_t int_state = static_cast<int32_t>(state); |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1536 | if (state >= Thread::kTerminated && state <= Thread::kSuspended) { |
| 1537 | os << kStateNames[int_state]; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1538 | } else { |
Elliott Hughes | 93e74e8 | 2011-09-13 11:07:03 -0700 | [diff] [blame] | 1539 | os << "State[" << int_state << "]"; |
Ian Rogers | b033c75 | 2011-07-20 12:22:35 -0700 | [diff] [blame] | 1540 | } |
| 1541 | return os; |
| 1542 | } |
| 1543 | |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 1544 | std::ostream& operator<<(std::ostream& os, const Thread& thread) { |
Elliott Hughes | 47179f7 | 2011-10-27 16:44:39 -0700 | [diff] [blame] | 1545 | os << "Thread["; |
| 1546 | if (thread.GetThinLockId() != 0) { |
| 1547 | // If we're in kStarting, we won't have a thin lock id or tid yet. |
| 1548 | os << thread.GetThinLockId() |
| 1549 | << ",tid=" << thread.GetTid() << ','; |
| 1550 | } |
| 1551 | os << thread.GetState() |
| 1552 | << ",Thread*=" << &thread |
| 1553 | << ",Object*=" << thread.GetPeer() |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 1554 | << "]"; |
Elliott Hughes | 330304d | 2011-08-12 14:28:05 -0700 | [diff] [blame] | 1555 | return os; |
| 1556 | } |
| 1557 | |
Elliott Hughes | 8daa092 | 2011-09-11 13:46:25 -0700 | [diff] [blame] | 1558 | } // namespace art |