HP aC++/HP C A.06.28 Programmer's Guide Integrity servers (769150-001, March 2014)

where [clause1, clause2, ...] indicates that the clauses are optional. There can be zero
or more clauses.
clause may be one of the following:
• if (scalar-expression))
• untied
• default (shared | none)
• private (list)
• firstprivate (list)
• shared (list)
The TASK directive defines an explicit task.
OMP TASKWAIT Pragma
#pragma omp taskwait new-line
The TASKWAIT directive specifies a wait on the completion of child tasks generated since the
beginning of the current task.
Because the TASKWAIT construct does not have a C language statement as part of its syntax, there
are some restrictions on its placement within a program. The TASKWAIT directive may be placed
only at a point where a base language statement is allowed. The TASKWAIT directive may not be
used in place of the statement following an if, while, do, switch, or label.
OMP THREADPRIVATE Pragma
#pragma omp threadprivate (list)
where (list) is a comma-separated list of variables that do not have an incomplete type.
The threadprivate directive makes the named file-scope, namescope-scope, or static
block-scope variables private to a thread.
OpenMP Clauses
Clauses on directives may be repeated as needed, subject to the restrictions listed in the description
of each clause. The order in which clauses appear in directives is not significant. If variable-list
appears in a clause, it must specify only variables. The following is the list of clauses in OpenMP
directives:
private
private(list)
The private clause declares the variables in the list to be private to each thread in a team. A
new object with automatic storage duration is allocated within the associated structured block
for each thread in the stream.
firstprivate
firstprivate(list)
The firstprivate clause provides a superset of the functionality provided by the private
clause. Variables specified in the list have private clause semantics described earlier. The new
private object is initialized, as if there is an implied declaration inside the structured block and the
initializer is the value of the original object.
lastprivate
lastprivate(list)
114 Pragma Directives and Attributes