There is a default task server, so if you are not doing anything serious you can just use the functions below. It’s almost always better to use call-with-task-server or the with-task-server form instead if you really need one.

procedure
( task-server? v)→boolean?
v:any/c

Predicate identifying a task server.

procedure
( call-with-task-server proc)→any
proc:(-> any )

Call specified procedure proc with new current-task-server .

parameter
( current-task-server )→task-server?
(current-task-server task-server)→void?
task-server:task-server?

Parameter identifying default task server for the procedures below.

procedure
( run-tasks [task-server])→void?
task-server:task-server? =(current-task-server )

Enter the main loop, waiting for and executing defined tasks. To terminate the loop use schedule-stop-task .

procedure
( schedule-stop-task [task-server])→void?
task-server:task-server? =(current-task-server )

Schedule task that will stop the task server at some close time or immediately if there are no other tasks scheduled.

procedure
( schedule-task proc[task-server])→void?
proc:(-> any )
task-server:task-server? =(current-task-server )

Schedule specified procedure proc to be executed soon.

procedure
( schedule-delayed-task proc
secs
[ task-server]) → void?
proc:(-> any )
secs:real?
task-server:task-server? =(current-task-server )

Schedule specified procedure proc to be executed after at least specified number of seconds, defined by spec.

procedure
( schedule-recurring-task proc
secs
[ task-server]) → void?
proc:(-> any )
secs:real?
task-server:task-server? =(current-task-server )

Schedule specified procedure proc to be executed periodically, with specified secs interval, starting soon after the call.

procedure
( schedule-event-task procevt[task-server])→void?
proc:procedure?
evt:evt?
task-server:task-server=(current-task-server )

Schedule specified procedure proc to be executed when specified event source evt becomes ready for synchronization. Synchronization result will form proc arguments.

procedure
( schedule-recurring-event-task proc
evt
[ task-server]) → void?
proc:procedure?
evt:evt?
task-server:task-server=(current-task-server )

Schedule specified procedure proc to be execute every time specified event source evt becomes ready for synchronization. Synchronization result will form proc arguments.

2Syntactic Forms🔗 i

syntax
( with-task-server body...)

Shortcut for (call-with-task-server (λ ()body... )).

syntax
( stop-task )

Shortcut for (schedule-stop-task ).

syntax
( task body...)

Shortcut for (schedule-task (λ ()body... )).

syntax
( recurring-task delaybody...)

Shortcut for (schedule-recurring-task (λ ()body... )delay).

syntax
( delayed-task delaybody...)

Shortcut for (schedule-delayed-task (λ ()body... )delay).

syntax
( event-task (evt. args)body...)

Shortcut for (schedule-event-task (λ argsbody... )evt).

syntax
( recurring-event-task (evt. args)body...)

Shortcut for (schedule-recurring-event-task (λ argsbody... )evt).

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