constScopedFastNativeObjectAccess&soaa)REQUIRES_SHARED(Locks::mutator_lock_)->jobject{returnthread->CreateInternalStackTrace(soaa);};// GetThreadStack() 的逻辑是:暂停线程 -> 调用 fn 获取调用栈 -> 恢复线程jobjecttrace=GetThreadStack(soa,javaThread,fn...
1、互斥锁(Mutexes)概述 在计算机科学中,互斥是一种机制,通过互斥对象是在代码的关键部分期间,使得一次只允许一个线程访问共享资源,而在Java中被称为Lock。互斥机制通常依赖两类方法:获取和释放(有时称为lock和unlock)。操作系统内核保证,一旦一个线程成功地获得了锁,在第一个线程释放它之前,没有其他线程可以获得它...
Runtime* runtime =Runtime::Current();//Atomically start the birth of the thread ensuring the runtime isn't shutting down.boolthread_start_during_shutdown =false;//这段代码用来检测thread是否在runtime宕机时start的{ MutexLock mu(self,*Locks::runtime_shutdown_lock_);if(runtime->IsShuttingDow...
630] | held mutexes= "abort lock" "mutator lock"(shared held) 2020-09-16 12:19:17.125 14689-14890/com.sharkeeapp.browser A/rkeeapp.browse: runtime.cc:630] native: #00 pc 002fe4ef /apex/com.android.runtime/lib/libart.so (art::DumpNativeStack(std::__1::basic_ostream<char, std...
java_vm_ext.cc:470]|stack=0x7bbbb05000-0x7bbbb07000stackSize=1005KB2021-07-1616:30:1507-1616:30:15.8891181213163Fart:art/runtime/java_vm_ext.cc:470]|held mutexes="mutator lock"(shared held)2021-07-1616:30:1507-1616:30:15.8891181213163Fart:art/runtime/java_vm_ext.cc:470](no managed ...
waiting to lock <0x0c3a58ed> (a com.onesignal.LocationGMS$1) held by thread 12 at com.onesignal.OneSignal.onAppFocus (OneSignal.java:1160) at com.onesignal.ActivityLifecycleHandler.handleFocus (ActivityLifecycleHandler.java:120) at com.onesignal.ActivityLifecycleHandler.onActivityResumed (ActivityLi...
Self(), *Locks::thread_suspend_count_lock_); 484 if (result != nullptr && !result->IsSuspended()) { 485 Locks::thread_list_lock_->AssertHeld(soa.Self()); 486 } 487 } 488 return result; 489} 490 491Thread* Thread::FromManagedThread(const ScopedObjectAccessAlreadyRunnable& soa, 492...
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lockForShare 用于保证占有lock时table不会被drop.用于SELECT,后台的merge lockForAlter 用于保证占有lock时同时刻只会处理一个ALTER Query lockExclusively 用于保证占有lock时没有任何其他线程(如select,merge,alter)对表进行操作 两种锁:alter_lock 进行alter操作的时候必须要抢占的锁以保证任何时刻只有一个alter线程...
Locks::mutator_lock_->Dump(ss); ss<<"\n"; runtime->GetThreadList()->Dump(ss); LOG(FATAL)<<ss.str(); exit(0); }voidMutex::Dump(std::ostream& os)const{ os<< (recursive_ ?"recursive":"non-recursive")<<name_<<"level="<< static_cast<int>(level_)<<"rec="<<recursion_count...