Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.
The critical directive identifies a construct that restricts execution of the associated structured block to a single thread at a time. The syntax of the critical directive is as follows:
#pragma omp critical [(name)] new-linestructured-block
An optional name may be used to identify the critical region. Identifiers used to identify a critical region have external linkage and are in a name space which is separate from the name spaces used by labels, tags, members, and ordinary identifiers.
A thread waits at the beginning of a critical region until no other thread is executing a critical region (anywhere in the program) with the same name. All unnamed critical directives map to the same unspecified name.