|SYSEVENT_BIND_HANDLE(3SYSEVENT)||System Event Library Functions||SYSEVENT_BIND_HANDLE(3SYSEVENT)|
sysevent_bind_handle, sysevent_unbind_handle - bind or unbind subscriber handle
cc [flag...] file ... -lsysevent [library ...] #include <libsysevent.h> sysevent_handle_t *sysevent_bind_handle(void (*event_handler)
void sysevent_unbind_handle(sysevent_handle_t *sysevent_hdl);
The sysevent_bind_handle() function allocates memory associated with a subscription handle and binds it to the caller's event_handler. The event_handler is invoked during subsequent system event notifications once a subscription has been made with sysevent_subscribe_event(3SYSEVENT).
The system event is represented by the argument ev and is passed as an argument to the invoked event delivery function, event_handler.
Additional threads are created to service communication between syseventd(8) and the calling process and to run the event handler routine, event_handler.
The sysevent_unbind_handle() function deallocates memory and other resources associated with a subscription handle and deactivates all system event notifications for the calling process. All event notifications are guaranteed to stop upon return from sysevent_unbind_handle().
The sysevent_bind_handle() function returns a valid sysevent subscriber handle if the handle is successfully allocated. Otherwise, NULL is returned and errno is set to indicate the error.
The sysevent_unbind_handle() function returns no value.
The sysevent_bind_handle() function will fail if:
See attributes(7) for descriptions of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE|
Event notifications are revoked by syseventd when the bound process dies. Event notification is suspended if a signal is caught and handled by the event_handler thread. Event notification is also suspended when the calling process attempts to use fork(2) or fork1(2). Event notifications might be lost during suspension periods.
The libsysevent interfaces do not work at all in non-global zones.
|July 24, 2009||OmniOS|