procmgr_event_trigger(), procmgr_event_trigger_updateable()

Trigger a system-wide event

Synopsis:

#include <sys/procmgr.h>

int procmgr_event_trigger( const unsigned flags );

int procmgr_event_trigger_updateable( const unsigned flags,
                                      const int value );

Arguments:

flags
A bitwise OR of the types of event that you want to trigger:
  • PROCMGR_EVENT_CONFSTR (privileged)
  • PROCMGR_EVENT_CONTIG_ALLOC_FAIL (privileged)
  • PROCMGR_EVENT_DAEMON_DEATH (privileged)
  • PROCMGR_EVENT_PATHSPACE
  • PROCMGR_EVENT_SYNC
  • PROCMGR_EVENT_SYSCONF (privileged)
  • PROCMGR_EVENT_TOD

For descriptions of the events, see "Event types" in the entry for procmgr_event_notify_add().

Note: In order to trigger a privileged event, your process must have the PROCMGR_AID_EVENT ability enabled. For more information, see procmgr_ability().
value
(procmgr_event_trigger_updateable() only) The value that you want to assign to sigev_value in the notification event (see below).

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The procmgr_event_trigger() and procmgr_event_trigger_updateable() functions trigger a system-wide event. The event is sent to all processes that requested (via procmgr_event_notify_add() or procmgr_event_notify()) to be notified of the event identified by flags. Each registered process provides a sigevent structure that specifies how it should be notified of the event.

(QNX Neutrino 6.6 or later) The procmgr_event_trigger_updateable() function lets you specify sigev_value for the processes that set SIGEV_FLAG_UPDATEABLE when they registered for notification. For more information about setting this flag, see "Hidden bits" in the entry for sigevent; for details about the extra information, see procmgr_event_notify_add().

Returns:

-1 on error; any other value indicates success.

Examples:

#include <sys/procmgr.h>

int main ( void )
{   
   procmgr_event_trigger( PROCMGR_EVENT_SYNC );
}

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes