condition variables造句

• A Hoare style monitor with two condition variables a and b.
• Thus all Objects are both recursive mutexes and condition variables.
• Thus each condition variable is associated with an assertion.
• Typical examples of opaque data types include threads or synchronization primitives like mutexes or condition variables.
• With conditions variable and changing, skiers should either call their area ahead or read published listings.
• In such a system, condition variables are not needed, but the assertions must be explicitly coded.
• The classic solution is to use two monitors, comprising two condition variables sharing one lock on the queue:
• Such timers are normally used to specify timeouts on I / O, waiting on condition variables and other rudimentary thread scheduling.
• A "'condition variable "'is basically a container of threads that are waiting for a certain condition.
• In computing, a "'futex "'( short for " fast userspace semaphores and POSIX mutexes or condition variables.
• In most types of monitors, these other threads may signal the condition variable to indicate that assertion is true in the current state.
• Having introduced the usage of condition variables, let's use it to revisit and solve the classic bounded producer / consumer problem.
• Spurious wakeups may sound strange, but on some multiprocessor systems, making condition wakeup completely predictable might substantially slow all condition variable operations.
• (When the condition variable can be queried as to the number of threads waiting on its queue, more sophisticated contracts can be given.
• A variant of this solution could use a single condition variable for both producers and consumers, perhaps named " queueFullOrEmptyCV " or " queueSizeChangedCV ".
• Conceptually a condition variable is a queue of threads, associated with a monitor, on which a thread may wait for some condition to become true.
• It is also common to provide a "'notify all "'operation that moves all threads waiting on a condition variable to the e queue.
• Rather than having explicit condition variables, each monitor ( i . e . object ) is equipped with a single wait queue in addition to its entrance queue.
• Finally, while RPC is primarily a synchronous protocol, it is used asynchronously in DART in conjunction with mutexes, condition variables, and other types of locks.
• The condition variable represents threads that are waiting for the queue to be non-full " and " ones waiting for it to be non-empty.