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VSTa manual pages  - MSG_PORT (2)

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msg_port - create a server port

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Synopsis
Description

#include <sys/msg.h>
int msg_port(port_name pn, port_name *pnp);

The msg_port() system service creates a new server port. The pn parameter provides a system-wide name for the port, and is passed to msg_connect() in clients wishing to connect to this server port. It is an error to use a pn value already in use on the system. If zero, a value is picked by the kernel. pnp, if non-NULL, will be assigned the port name assigned to the new port.