2 child task A task is a child task of its generating task region.A child task region is not part of its generating task region. 3 sibling tasks Tasks that are child tasks of the same task region descendent task A task that is the child task of a task region or of one of its descendent task regions. task completion Task completion occurs when the end of the structured block associated with the construct that generated the task is reached. COMMENT:Completion of the initial task occurs at program exit. task scheduling point A point during the execution of the current task region at which it can be 10 suspended to be resumed later,or the point of task completion,after which the 11 executing thread may switch to a different task region. 12 COMMENT:For a list of task scheduling points,see Section 2.11.3 on page 118 13 task switching The act of a thread switching from the execution of one task to another task. 格 tied task A task that,when its task region is suspended,can be resumed only by the same thread that suspended it.That is,the task is tied to that thread 1 untied task A task that,when its task region is suspended,can be resumed by any thread in 17 the team.That is,the task is not tied to any thread. undeferred task A task for which execution is not deferred with respect to its generating task 19 region.That is,its generating task region is suspended until execution of the 20 undeferred task is completed. 23 included task A task for which encountering thread. 站 merged task A task whose data emvironment,inclusive of ICVs,is the same as that of its generating task region 26 final task A task that forces all of its child tasks to become final and included tasks. 789 task dependence An orde ring relati on bet een two sibling tasks 39 dependent task A task that because of a task dependence cannot be executed until its predecessor tasks have completed. 32 predecessor task A task that must complete before its dependent tasks can be executed. task synchronization 33 construct A taskwait,taskgroup,or a barrier construc Chapter 1 Introduction 9Chapter 1 Introduction 9 child task A task is a child task of its generating task region. A child task region is not part of its generating task region. sibling tasks Tasks that are child tasks of the same task region. descendent task A task that is the child task of a task region or of one of its descendent task regions. task completion Task completion occurs when the end of the structured block associated with the construct that generated the task is reached. COMMENT: Completion of the initial task occurs at program exit. task scheduling point A point during the execution of the current task region at which it can be suspended to be resumed later; or the point of task completion, after which the executing thread may switch to a different task region. COMMENT: For a list of task scheduling points, see Section 2.11.3 on page 118. task switching The act of a thread switching from the execution of one task to another task. tied task A task that, when its task region is suspended, can be resumed only by the same thread that suspended it. That is, the task is tied to that thread. untied task A task that, when its task region is suspended, can be resumed by any thread in the team. That is, the task is not tied to any thread. undeferred task A task for which execution is not deferred with respect to its generating task region. That is, its generating task region is suspended until execution of the undeferred task is completed. included task A task for which execution is sequentially included in the generating task region. That is, an included task is undeferred and executed immediately by the encountering thread. merged task A task whose data environment, inclusive of ICVs, is the same as that of its generating task region. final task A task that forces all of its child tasks to become final and included tasks. task dependence An ordering relation between two sibling tasks: the dependent task and a previously generated predecessor task. The task dependence is fulfilled when the predecessor task has completed. dependent task A task that because of a task dependence cannot be executed until its predecessor tasks have completed. predecessor task A task that must complete before its dependent tasks can be executed. task synchronization construct A taskwait, taskgroup, or a barrier construct. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33