#HODLCOIN QT SYNC CODE#

The Producer and Consumer using Semaphores example shows a typical application of semaphores: synchronizing access to a circular buffer between a producer and a consumer. In contrast, a QMutex protects exactly one resource. QSemaphore is a generalization of QMutex that protects a certain number of identical resources. A QMutex forces multiple readers to take turns to read shared data, but a QReadWriteLock allows simultaneous reading, thus improving parallelism. When a piece of data is not being written to, it is safe for multiple threads to read from it simultaneously. QReadWriteLock is similar to QMutex, except that it distinguishes between 'read' and 'write' access. If a second thread tries to lock the mutex while it is already locked, the second thread will be put to sleep until the first thread completes its task and unlocks the mutex. A thread locks a mutex in order to gain access to a shared resource. QMutex is the basic class for enforcing mutual exclusion. Qt provides low-level primitives as well as high-level mechanisms for synchronizing threads. It is a common technique for protecting shared resources such as data. The principle of forcing threads to wait for one another is called mutual exclusion. For example, if two threads try to write to the same variable simultaneously, the result is undefined.

#HODLCOIN QT SYNC CODE#

While the purpose of threads is to allow code to run in parallel, there are times where threads must stop and wait for other threads.

Hodlcoin qt sync