gio-GIOScheduler: GIOScheduler

In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description

I/O Scheduler

Methods and Functions

gIoSchedulerCancelAllJobs()
gIoSchedulerJobSendToMainloop(object, func, user.data = NULL)
gIoSchedulerJobSendToMainloopAsync(object, func, user.data = NULL)

Detailed Description

Schedules asynchronous I/O operations. GIOScheduler integrates into the main event loop (GMainLoop) and may use threads if they are available.

Each I/O operation has a priority, and the scheduler uses the priorities to determine the order in which operations are executed. They are not used to determine system-wide I/O scheduling. Priorities are integers, with lower numbers indicating higher priority. It is recommended to choose priorities between G_PRIORITY_LOW and G_PRIORITY_HIGH, with G_PRIORITY_DEFAULT as a default.

Structures

GIOSchedulerJob

Opaque class for definining and scheduling IO jobs.

User Functions

GIOSchedulerJobFunc(job, cancellable, user.data)

I/O Job function.

Note that depending on whether threads are available, the GIOScheduler may run jobs in separate threads or in an idle in the mainloop.

Long-running jobs should periodically check the cancellable to see if they have been cancelled.

job

a GIOSchedulerJob.

cancellable

optional GCancellable object, NULL to ignore.

user.data

the data to pass to callback function

Returns: [logical] TRUE if this function should be called again to complete the job, FALSE if the job is complete (or cancelled)

Author(s)

Derived by RGtkGen from GTK+ documentation

References

https://developer.gnome.org/gio/stable/gio-GIOScheduler.html

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.