Data API

The HPOM Data API provides a set of functions to set and get information in the form of HPOM data structures. Direct access to HPOM objects is not supported. This API is used for:

• HPOM Data Structures

  (See HPOM Data Structures for more information.)

Usage

To use the functions, include the header file opcapi.h in your application. Each routine returns an error/status code.

Prerequisites

The API functions can be issued by any user. For some attribute values a maximum length applies as noted with the appropriate attribute selector described in HPOM Data Structures.

Multithread Usage

All functions of the HPOM Data API are safe to be called by multithreaded applications, and are thread-safe for both POSIX Threads and DCE User Threads. They are neither async-cancel, async-signal, nor fork-safe, and cannot be safely called kernel threads.