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Desktop Gold doesn't provide dial-up internet connectivity and can only be used if you already have a broadband internet connection. If you're having trouble getting online, check to see if the issue is with your internet connection.Our help article, Troubleshooting a Broadband Connection, provides some useful troubleshooting tips. If you are ...
With large numbers of processors, adding a random exponential backoff delay before re-checking the lock performs even better than TTAS. [4] [5] A few multi-core processors have a "power-conscious spin-lock" instruction that puts a processor to sleep, then wakes it up on the next cycle after the lock is freed.
A simple example is when Process 1 has obtained an exclusive lock on Resource A, and Process 2 has obtained an exclusive lock on Resource B. If Process 1 then tries to lock Resource B, it will have to wait for Process 2 to release it. But if Process 2 then tries to lock Resource A, both processes will wait forever for each other.
In many cases programs may appear to be hung, but are making slow progress, and waiting a few minutes will allow the task to complete. Modern operating systems provide a mechanism for terminating hung processes, for instance, with the Unix kill command, or through a graphical means such as the Task Manager's "end task" button in Windows (select the particular process in the list and press "end ...
The secondary device is a computer running a desktop operating system, which serves as a companion for the primary device. Desktop messaging clients on secondary devices do not function independently, as they are reliant on the mobile phone maintaining an active network connection for login authentication and syncing messages.
In the 1980s and early 1990s, IBM Personal Computers and some PC compatibles included a tubular pin tumbler lock on the computer's casing, performing a security function that varied by manufacturer. In some instances, the lock would prevent the case from being opened to inhibit the theft or modification of internal components.
File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time, and preventing reading of the file while it's being modified or deleted.
Generally, locks are advisory locks, where each thread cooperates by acquiring the lock before accessing the corresponding data. Some systems also implement mandatory locks, where attempting unauthorized access to a locked resource will force an exception in the entity attempting to make the access. The simplest type of lock is a binary ...