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Dictionary of Thread TermsBase Address ControlAn eccentricity of Solaris which allows identification of where the thread will reside in physical memory.Call-Once FunctionsAn ability to limit execution of a particular function/routine only once. Subsequent calls will return without execution and error.CancellationKilling threads from within program.Condition VariablesDetached ThreadsFork All ThreadsA flag which forces all thread-creation calls to be forks with shared memory. Since Linux defines a fork() as a specific kind of clone() (thread), this is somewhat inherent. Other implementations have to redefine or encapsulate thread-creation calls in order to accomplish this.Fork Calling Thread OnlyForked ProcessA stand-alone task that shares nothing intrinsicly with other tasks. The only communication is has is through pipes, files and explicitly shared memory.Joinable ThreadsThe ability to merge threads into a single execution context(?).Kernel-space ThreadsThreads that are handled/scheduled by the kernel.MutexStands for Mutual Exclusion. A mutex can lock specific sections of memory using access flags.Mutex AttributesPer-thread Data Handling FunctionPer-thread Signal HandlingAbility to specify sharing signals. In other words, several threads can share a signal: if the signal is raised only one thread has to respond. This is different from unshared signals: each thread has its own signal table.Priority Inversion HandlingAs threads get I/O blocked, provide a temporary reprioritization of threads.Priority SchedulingProgrammatically identifying the order, priority, or next threads to execute.ProcessEssentially the same as a Task, having it's own private data and event regions. However, often "process" defines the whole running program which may have several threads and/or tasks. Also, "process" describes a supervising program.Processor-specific Thread AllocationThe ability to designate a specific thread to a specific processor. This is useful for processors that handle special things like interrupts or excelerators.Readers/Writer LockingIn Solaris, threads can have one writer and several readers at the same time.SemaphoresA pair of functions that lock datasets, p() and v() (lock and unlock, respectively)Shared/Private MutexesHaving separate spaces for mutexesSpecifying ConcurrencyThe ability to identify which threads will be multiprocessed.Stack Size ControlThe ability to limit, resize or check the thread's stack usage.SynchronizationTaskLike the Process, a Task has its own data and event regions, but a task often includes interaction with other parent, child or sister tasks. The task may have specific assignments to perform; whereas, the process may supervise.ThreadThe smallest context of execution (COE). Often it is created to share data directly with the parent.ThreadAs how Linux Torvalds defines it: a "context of execution". It basically is the minimum basic executable unit that contains shared code, data and stack. Thus it is simply a processor's context.Thread AttributesThread ID ComparisonThread SuspensionTemporarily halting execution of a thread. In Linux kernel-space threads, this can be accomplished using SIGSTOP and SIGCONT.User-space ThreadsThreads that are handled/scheduled within a single task by special libraries.[Previous Page][First Page][Dictionary][Email Author][Next Page]
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