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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH PORT_SEND 3C "Oct 24, 2007" .SH NAME port_send, port_sendn \- send a user-defined event to a port or list of ports .SH SYNOPSIS .LP .nf #include \fBint\fR \fBport_send\fR(\fBint\fR \fIport\fR, \fBint\fR \fIevents\fR, \fBvoid *\fR\fIuser\fR); .fi .LP .nf \fBint\fR \fBport_sendn\fR(\fBint\fR \fIports\fR[], \fBint\fR \fIerrors\fR[], \fBuint_t\fR \fInent\fR, \fBint\fR \fIevents\fR, \fBvoid *\fR\fIuser\fR); .fi .SH DESCRIPTION .sp .LP The \fBport_send()\fR function submits a user-defined event to a specified port. The \fIport\fR argument is a file descriptor that represents a port. The sent event has its \fBportev_events\fR member set to the value specified in the \fIevents\fR parameter and its \fBportev_user\fR member set to the value specified in the \fIuser\fR parameter. The \fBportev_object\fR member of an event sent with \fBport_send()\fR is unspecified. .sp .LP The \fBport_sendn()\fR function submits a user-defined event to multiple ports. The \fIports\fR argument is an array of file descriptors that represents ports (see \fBport_create\fR(3C)). The \fInent\fR argument specifies the number of file descriptors in the \fIports\fR[] array. An event is submitted to each specified port. Each event has its \fBportev_events\fR member set to the value specified in the \fIevents\fR parameter and its \fBportev_user\fR member set to the value specified in the \fIuser\fR parameter. The \fBportev_object\fR member of \fIevents\fR sent with \fBport_sendn()\fR is unspecified. .sp .LP A port that is in alert mode can be sent an event, but that event will not be retrievable until the port has resumed normal operation. See \fBport_alert\fR(3C). .SH RETURN VALUES .sp .LP Upon successful completion, the \fBport_send()\fR function returns 0. Otherwise, it returns \(mi1 and sets \fBerrno\fR to indicate the error. .sp .LP The \fBport_sendn()\fR function returns the number of successfully submitted events. A non-negative return value less than the \fInent\fR argument indicates that at least one error occurred. In this case, each element of the \fIerrors\fR[] array is filled in. An element of the \fIerrors\fR[] array is set to 0 if the event was successfully sent to the corresponding port in the \fIports\fR[] array, or is set to indicate the error if the event was not successfully sent. If an error occurs, the \fBport_sendn()\fR function returns \(mi1 and sets \fBerrno\fR to indicate the error. .SH ERRORS .sp .LP The \fBport_send()\fR and \fBport_sendn()\fR functions will fail if: .sp .ne 2 .na \fB\fBEAGAIN\fR\fR .ad .RS 10n The maximum number of events per port is exceeded. The maximum allowable number of events per port is the minimum value of the \fBprocess.max-port-events\fR resource control at the time \fBport_create\fR(3C) was used to create the port. .RE .sp .ne 2 .na \fB\fBEBADF\fR\fR .ad .RS 10n The port file descriptor is not valid. .RE .sp .ne 2 .na \fB\fBEBADFD\fR\fR .ad .RS 10n The \fIport\fR argument is not an event port file descriptor. .RE .sp .ne 2 .na \fB\fBENOMEM\fR\fR .ad .RS 10n There is not enough memory available to satisfy the request. .RE .sp .LP The \fBport_sendn()\fR function will fail if: .sp .ne 2 .na \fB\fBEFAULT\fR\fR .ad .RS 10n The \fIports\fR[] pointer or \fIerrors\fR[] pointer is not reasonable. .RE .sp .ne 2 .na \fB\fBEINVAL\fR\fR .ad .RS 10n The value of the \fInent\fR argument is 0. .RE .SH EXAMPLES .LP \fBExample 1 \fRUse \fBport_send()\fR to send a user event (PORT_SOURCE_USER) to a port. .sp .LP The following example uses \fBport_send()\fR to send a user event (\fBPORT_SOURCE_USER\fR) to a port and \fBport_get()\fR to retrieve it. The \fBportev_user\fR and \fBportev_events\fR members of the \fBport_event_t\fR structure are the same as the corresponding user and events arguments of the \fBport_send()\fR function. .sp .in +2 .nf #include int myport; port_event_t pe; struct timespec timeout; int ret; void *user; myport = port_create(); if (myport) { /* port creation failed ... */ ... return(...); } \&... events = 0x01; /* own event definition(s) */ user = ; ret = port_send(myport, events, user); if (ret == -1) { /* error detected ... */ ... close(myport); return (...); } /* * The following code could also be executed from another thread or * process. */ timeout.tv_sec = 1; /* user defined */ timeout.tv_nsec = 0; ret = port_get(myport, &pe, &timeout); if (ret == -1) { /* * error detected : * - EINTR or ETIME : log error code and try again ... * - Other kind of errors : may have to close the port ... */ return(...); } /* * After port_get() returns successfully, the port_event_t * structure will be filled with: * pe.portev_source = PORT_SOURCE_USER * pe.portev_events = 0x01 * pe.portev_object = unspecified * pe.portev_user = */ \&... close(myport); .fi .in -2 .SH USAGE .sp .LP See \fBsetrctl\fR(2) and \fBrctladm\fR(8) for information on using resource controls. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .sp .TS box; c | c l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Architecture all _ Interface Stability Committed _ MT-Level Async-Signal-Safe .TE .SH SEE ALSO .sp .LP .BR setrctl (2), .BR port_alert (3C), .BR port_associate (3C), .BR port_create (3C), .BR port_get (3C), .BR attributes (7), .BR rctladm (8)