In the above code, the getInstance() method is not thread-safe. Multiple threads can access it at the same time. For the first few threads when the instance variable is not initialized, multiple threads can enter the if loop and create multiple instances. It will break our singleton impleme...
We can slightly improve the thread-safe implementation of the Counter class by exploiting another object as a monitor lock, instead of this. 我们可以通过将另一个对象用作监视器锁而不是 this ,来稍微改善 Counter 类的线程安全实现。(那么这个对象和this有和不同呢) Not only does this provide coordin...
Simple Singleton Pattern: (Lazy Initialization + ThreadSafe with synchronized block) This implementation uses the same double-checkedlockingmechanism as in the previous implementation. The addedlogging statementshelp demonstrate when the instance is being created and returned. packagecom.crunchify.tutorials; ...
I would agree that this would a bit too extreme for someone who is starting to learn java. But for someone a bit experienced who will understand what is happening and need a bit more speed, the second implementation is definitely the way to go. Moreover, most of the time when doing ...
MPJ Express is a thread-safe Java messaging library that provides a full implementation of the mpiJava 1.2 API specification. This specification defines a MPI-like bindings for the Java language. We have implemented two communication devices as part of our library, the first, called niodev is ...
Implementation that proves that instance variables are not thread safe ... Implementing A Thread-safe Queue Jul 10, 2014 I have situation where a user can request java server to send a value to an embedded device, and if the device is asleep, that value needs to be stored in a queue un...
一文读懂JAVA并发容器类ConcurrentHashMap 推理ConcurrentHashMap的实现1.8 ① JDK的描述 If a thread-safe implementation is not needed, it is recommended to...If a thread-safe highly-concurrent implementation is desired, then it is recommended to use ConcurrentHashMap 67930 Snort 基础8 /usr/bin/instal...
SafeQueue This class is a multi-producer, multi-consumer queue. It offers both blocking and non-blocking consuming as well, while producing is always blocking. The capacity is dynamically adjusted. The implementation is based onstd::queue, and the thread safety is achieved usingstd::mutexandstd...
A Novel Asynchronous Software Cache Implementation for the Cell-BE Processor In this work we propose an implementation of a highly efficient and thread-safe software cache for a single cluster of the ST STHORM many-core accelerator. The main novelty introduced by this work i...J. Balart, M....
We can revisit this for 3.13 if it turns out to be an issue in practice.Post 3.13 we would like to change the underlying lock to be a PyMutex and replace the implementation with something like:static PyObject * lock_PyThread_release_lock(lockobject *self, PyObject *Py_UNUSED(ignored))...