HPlogo Resource Management Programmer's Guide: HP 3000 MPE/iX Computer Systems > Chapter 1 Introduction

Managing Shared Resources with RINs

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Chapter 2 describes how you can use RINs to manage a specific resource shared by a set of jobs or processes, so that no two jobs or processes can use the resource at the same time. This chapter discusses the following system commands and intrinsics:

  • :GETRIN command

  • :FREERIN command

  • LOCKGLORIN intrinsic

  • UNLOCKGLORIN intrinsic

  • GETLOCRIN intrinsic

  • LOCKLOCRIN intrinsic

  • UNLOCKLOCRIN intrinsic

  • LOCRINOWNER intrinsic

  • FREELOCRIN intrinsic

Appendix A contains a program illustrating the use of the LOCKGLORIN and UNLOCKGLORIN intrinsics to guarantee exclusive access to selected records in a data file.

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