Chapter 2 - Providers
This chapter describes providers, software entities that offer data-oriented services, and introduces the main types of providers. It also discusses the use of general provider functions, which you can use with any provider regardless of its type. You use these functions to
Later chapters in this book describe each type of provider in detail. Although the functions you use to open providers are general provider functions, they are included in the chapter describing individual providers. This chapter describes only the function you use to close a provider because you use the same function for all types of providers.
- open and close providers
- set a provider's mode of operation
- cancel synchronous processing
- issue a command directly to a Streams module underlying a provider
Before you read this chapter, you should read the chapter "Introduction to Open Transport" in this book. After reading this chapter, you can either read the chapter describing the provider whose services you are interested in. In order to use the functions described in this chapter, you must first use the
OTInitOpenTransportfunction to initialize Open Transport. This function is described in the chapter "Configuration Management" in this book.
Chapter Contents
- About Providers
- Provider Functions
- Modes of Operation
- Provider Events
- Using Providers
- Controlling a Provider's Modes of Operation
- Specifying How Provider Functions Execute
- Setting a Provider's Blocking Status
- Setting a Provider's Send-Acknowledgment Status
- Sending and Receiving Data
- Using Notifier Functions to Handle Provider Events
- Transferring a Provider's Ownership
- Closing a Provider
- Providers Reference
- Constants and Data Types
- Event Codes
- The TNetbuf Structure
- Functions
- Opening and Closing Providers
- Controlling a Provider's Mode of Operation
- Installing and Removing a Notifier Function
- Sending Module-Specific Commands
- Application-Defined Functions