INtime® 3.1 Software - tenAsys

INtime 3.1 Software
Ports
A port is the object which allows access to the features provided by an INtime service.
A process that uses a port object can send messages through the port to the INtime
service, or can receive messages through the port from the service. Other operations
possible on ports include:
• Attach a heap object to the port for use by the service to store received messages.
• Link ports to a sink port, allowing a single thread to service multiple ports.
Services
Heaps
An INtime service is an INtime real-time application (RTA) which provides access to
one or more interfaces. Each interface is associated with a service descriptor. The
interface generates events which are handled by the service. A process which uses a
service creates a port for access to that service. A service may support more than one
port and more than one user process may use a given port. A user process
communicates with the service by sending and receiving messages via the port.
A heap is an INtime memory object that manages the chunk of dynamic memory
allocated to it. A heap can be used by multiple processes that need to share large
amounts of information. For instance, a heap can be associated with a port. Data
placed in memory obtained from the heap by threads in one process (the thread using
a port to communicate with an INtime service) can be manipulated by threads in
another process (thread within the service accessing data passed through the port to
the service).
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