This tutorial explains what a lock is in multithreading, shows an example of how to implement a lock, and discusses topics like reentrance, and when to unlock a lock etc.
Also in profiling a program that runs very slowly I see the #1 hotspot is com.mysql.jdbc.util.ReadAheadInputStream.fill(int), where in 29000 invocations elapsed time in this method is over 76 seconds. I disagree with your assertion about Java and multithreading. There is this little thing ...
were fixed earlier (e.g. Merlin), so perhaps there was a regression in Hopper? ###@##.### 2002-12-19 Since the nature of the bugs with MediaTracker is usually some kind of multithreading issue, it's possible that the bug surfaced because of some timing changes due to vm or ...
Best way to release memory in multithreading application (Getting OutOfMemory Exception) Best way to stop a thread. Best way to stop a windows service with an error condition in a spawned thread? Best way to UPDATE multiple rows in oracle database better formatting of date/timestamp for creat...
Also ports types used in tests and based onAbstractQueueSynchronizer: java.util.concurrent.CountDownLatch java.util.CyclicBarrier Additional changes: Movedconcurrent.atomictest sources to correct directory Added missingLockSupportTestfor already implementedLockSupport ...
There are two extremes in multithreading. One is to make each thread execute different code–they all have differentthread functions(MPMD–Multiple Programs Multiple Data, or even MPSD–Multiple Programs Single Data). This approach doesn’t scale very well with the number of cores–after all ther...
in the lock request and processing the priority queue for the shared resource requested in the lock request; at the first primary node, generate a first global lock state in response to the first local lock state, wherein the first global lock state comprises a holdable lock mode that is ...