Under the covers
QNX SDP8.0Writing a Resource ManagerDeveloper
Despite the fact that you'll be using a resource manager API that hides many details from you, it's still important to understand what's going on under the covers. For example, your resource manager is a server that contains a MsgReceive() loop, and clients send you messages using MsgSend*(). This means that you must reply either to your clients in a timely fashion, or leave your clients blocked but save the rcvid for use in a later reply.
To help you understand, we'll discuss the events that occur under the covers for both the client and the resource manager.
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