The scheduler Reference Manual

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The scheduler Reference Manual

This is the scheduler Reference Manual, generated automatically by Declt version 4.0 beta 2 "William Riker" on Wed Jun 15 05:46:36 2022 GMT+0.

Table of Contents


1 Introduction

Common Lisp Scheduler

Module is designed for regular tasks which need to be performed on specific date or on regular basis. For now main component client is reporting module, but it may be used for scheduling calculation refresh, regular cleanups and similar.

Specifying a task

Task should be added in a format similar to the one used in cron tables. There are a few note-worthy differences. Each entry is composed of six fields separated by space:

MINUTE HOUR DAY-OF-MONTH MONTH DAY-OF-WEEK SEXPRESSION

To specify multiple values for one field, the following operators are available. In the order of precedence,

Examples:

# make report every fifteen minutes (perhaps at :07, :22, :37, :52)
H/15 * * * * (ie-reports:make-report "foo" "bar" "zzzur")

# refresh data every ten minutes in the first half of every hour (three times, perhaps at :04, :14, :24)
H(0-29)/10 * * * * (grc:refresh-data)

# once every two hours at 45 minutes past the hour starting at 9:45 AM and finishing at 3:45 PM every weekday.
45 9-16/2 * * 1-5 (grc:restart)

# once in every two hours slot between 9 AM and 5 PM every weekday (perhaps at 10:38 AM, 12:38 PM, 2:38 PM, 4:38 PM)
H H(9-16)/2 * * 1-5 (grc:restart)

# once a day on the 1st and 15th of every month except December
H H 1,15 1-11 * nil

Specifying a task with a function

For convenience it is possible to specify a task as a cons of the time spec (a string time specification and a function with no arguments). Such tasks will be harder to serialize, however they should be fine for systems that doesn't require serialization.

> (scheduler:create-scheduler-task *scheduler*
   (cons "* * * * *" (lambda () (print :minute))))

Using scheduler

Using scheduler is fairly simple. First user has to create a scheduler instance of desired class[^1]. Then add some tasks to it. The last task is to stop the scheduler in the first or in the second minute (depends on whenever we have started it on even or odd minute).

> (defvar *scheduler* (make-instance 'scheduler:in-memory-scheduler))
> (scheduler:create-scheduler-task *scheduler* "@reboot (print :reboot)")
> (scheduler:create-scheduler-task *scheduler* "@shutdown (print :shutdown)")
> (scheduler:create-scheduler-task *scheduler* "* * * * * (print :minute)")
> (scheduler:create-scheduler-task *scheduler* "*/2 * * * * (scheduler:stop-scheduler *scheduler*)")

Important note regarding the last task. It assumes, that start-scheduler is run in the same package as *scheduler* is defined. Listing tasks is also very easy. Same goes for starting the scheduler loop:

> (scheduler:list-scheduler-tasks *scheduler*)
(#<SCHEDULER-IMPLEMENTATION::SCHEDULER-TASK {10035E67C3}>
 #<SCHEDULER-IMPLEMENTATION::SCHEDULER-TASK {10035E16F3}>
 #<SCHEDULER-IMPLEMENTATION::SCHEDULER-TASK {1003501F03}>
 #<SCHEDULER-IMPLEMENTATION::SCHEDULER-TASK {10034FF883}>)
> (scheduler:start-scheduler *scheduler*)
;; Starting scheduler.
;; :REBOOT
;; :MINUTE
;; :SHUTDOWN
;; Exiting scheduler
:STOPPED

Since we have started scheduler in the same thread we should see output in the same console we have started it. If it were started in a separate thread *standard-output* would be bound to wherever *inferior-lisp* output is.

Remember, to add package prefixes to commands. Also keep in mind, that we have no means in the cron specification to set a second of occurance (this may be done with update-scheduler-task) and by default seconds are assigned to a random value between 0-59 (to distribute tasks on the timeline a little).

Now let us update the task which stops the scheduler so it ends in 5 minutes from now:

> (let ((task (find "(scheduler:stop-scheduler *scheduler*)"
                    (scheduler:list-scheduler-tasks *scheduler*)
                    :key #'scheduler:command :test #'equal)))
    (scheduler:update-scheduler-task
     *scheduler* task
     :start-at (local-time:timestamp+ (local-time:now) 5 :minute)))
#<SCHEDULER-IMPLEMENTATION::SCHEDULER-TASK {10032FD393}>
> (scheduler:start-scheduler *scheduler*)
;; Starting scheduler.
;; :REBOOT
;; :MINUTE
;; :MINUTE
;; :MINUTE
;; :MINUTE
;; :SHUTDOWN
;; Exiting scheduler.
:STOPPED

This illustrates a capability of the scheduler to postpone the first occurance of the event. After shutdown is triggered, next occurance is recomputed from the stored time specification.

Another interesting aspect of having next occurance precomputed is a capability of running tasks, which was missed (i.e computer was down, or scheduler wasn't running). If the scheduler encounters task with its activation time set in the past it will start it at some point in the future[^2].

Note, that the missing task will be performed only once even if more calls were missed. With our scheduler, if we have waited at least two minutes after last invocation and start the scheduler once more it stopped immedietely after start:

> (scheduler:start-scheduler *scheduler*)
;; Starting scheduler.
;; ; missed (scheduler:stop-scheduler *scheduler*) is called
;; :MINUTE ; <- another missed task, we go through full loop iteration before exit
;; :REBOOT ; <- "ordinary" reboot task
;; :SHUTDOWN ; <- "ordinary" shutdown task
;; Exiting scheduler.
:STOPPED

In this case scheduler loop will exit immedietely. It is an important clue, that it is unwise to schedule stop-scheduler call in scheduler, but rather call this function asynchronously.

Extending Scheduler

This is extensible software. Scheduler is arranged around a simple protocol based on CRUD(L) principle. Reference implementation in-memory-scheduler is provided for conveniance and testing.

More advanced backends may be written by subclassing scheduler class for task storage. Optionally scheduler-task may be subclassed to extend tasks.

Each scheduler must have implemented the following methods: create-scheduler-task, read-scheduler-task, update-scheduler-task, delete-scheduler-task and list-scheduler-tasks. Methods implementation should be fairly straightforward.

Each task must obey the protocol based on the following methods: last-occurance, next-occurance, time-specs and command. Methods create-scheduler-task and update-scheduler-task must be aware of the scheduler-task implementation to be able to manipulate its internal structure.

last-occurance and next-occurance should be set on update-scheduler-task invocation according to key parameters last-run and start-at (when present). Format of these dates is an instance of local-time:timestamp and that's what these methods should return.

time-spec is a property list, which stores occurance time specification. It may be a symbol indicating some supported event, like :reboot and :shootdown or a property list.

Property list must have keys :minute :hour :day-of-month :month day-of-week, which values are lists with integer values when task should be repeated, or a keyword :every. For example:

(list :minute (30)
      :hour (1)
      :day-of-month (7 14)
      :month :every
      :day-of-week :every)

Command is a string, which will be read and evaluated each time the task is executed.

Reference manual

SCHEDULER:SCHEDULER                                              [class]

Abstract class from which each driver has to inherit. Thread-safety of
CRUDL operations is implemented in :AROUND methods. Class should not
have direct instances.
SCHEDULER:IN-MEMORY-SCHEDULER                                   [class]
base-class: SCHEDULER

Reference implementation of a scheduler. Data is kept in a
memory. Class may be instationalized.
SCHEDULER:SCHEDULER-TASK                                         [class]
readers: TIME-SPECS, COMMAND, LAST-OCCURANCE, NEXT-OCCURANCE

Class representing a single task. All scheduler entries added by
CREATE-SCHEDUELR-TASK should be instances of this class.
SCHEDULER:CREATE-SCHEDULER-TASK                       [generic function]
args: SCHEDULER CRON-ENTRY

Creates and returns scheduler task instance of class SCHEDULER-TASK.
SCHEDULER:READ-SCHEDULER-TASK                         [generic function]
args: SCHEDULER TASK

Look for a task in scheduler entries. Programmer may specialize second
argument on other types like UUID.
SCHEDULER:UPDATE-SCHEDULER-TASK                      [generic function]
args: SCHEDULER TASK &key CRON-ENTRY START-AT &allow-other-keys

Updates TASK. CRON-ENTRY contains TIME-SPECS and command as described
earlier in this document. START-AT is LOCAL-TIME:TIMESTAMP instance
used to set a date of the first task invocation.

If a key argument is not supplied then slot is not updated. Remember,
that you shouldn't use direct slot write, because scheduler driver may
store data in a database or in a file. Always update tasks with this
function.
SCHEDULER:DELETE-SCHEDULER-TASK                      [generic function]
args: SCHEDULER TASK

Removes task from the scheduler so it is not invoked when it's next
occurance time comes.
SCHEDULER:LIST-SCHEDULER-TASKS                       [generic function]
args: SCHEDULER

Returns a list of all tasks associated with the scheduler. List
elements are instances of class SCHEDULER-TASK.
SCHEDULER:START-SCHEDULER                                    [function]
args: SCHEDULER

Starts scheduler in a loop. Function blocks until STOP-SCHEDULER is
called, so it may be wise to start it in another thread. All tasks are
evaluated in the package this function is invoked in. NB: if function
is started with

  (bt:make-thread (lambda () (scheduler:start-scheduler *s*)))
  
the package is CL-USER because that is how BORDEAUX-THREADS is
implemented.

If scheduler loop encounters task which was missed (it was meant to be
started in the past) it will schedule this tasks by itself in the near
future (when exactly is not specified). After each task activation
next activation date is recomputed automatically and updated with
UPDATE-SCHEDULER-TASK.
SCHEDULER:STOP-SCHEDULER                                     [function]
args: SCHEDULER

Stops scheduler. Scheduler main function should stop after finishing
currently pending task loop iteration.

[^1]: Currently only reference scheduler is implemented called in-memory-scheduler. It should be fairly usable for scheduling tasks in running software, but for persistance it may be necessary to write a new backend.

[^2]: In this case - immedietely, but it is not specifed to allow task distribution to balance the load after


2 Systems

The main system appears first, followed by any subsystem dependency.


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2.1 scheduler

Extensible task scheduler.

Author

Daniel Kochmański <daniel@turtleware.eu>

License

BSD-2-Clause

Dependencies
  • alexandria (system).
  • bordeaux-threads (system).
  • split-sequence (system).
  • local-time (system).
  • optima (system).
  • optima.ppcre (system).
Source

scheduler.asd.

Child Components

3 Files

Files are sorted by type and then listed depth-first from the systems components trees.


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3.1 Lisp


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3.1.1 scheduler/scheduler.asd

Source

scheduler.asd.

Parent Component

scheduler (system).

ASDF Systems

scheduler.


3.1.2 scheduler/scheduler.lisp

Source

scheduler.asd.

Parent Component

scheduler (system).

Packages
Public Interface
Internals

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3.2 Static


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3.2.1 scheduler/README.md

Source

scheduler.asd.

Parent Component

scheduler (system).


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3.2.2 scheduler/LICENSE

Source

scheduler.asd.

Parent Component

scheduler (system).


4 Packages

Packages are listed by definition order.


4.1 scheduler

Source

scheduler.lisp.

Public Interface

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4.2 scheduler-implementation

Source

scheduler.lisp.

Use List
  • alexandria.
  • common-lisp.
Public Interface
Internals

5 Definitions

Definitions are sorted by export status, category, package, and then by lexicographic order.


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5.1 Public Interface


5.1.1 Ordinary functions

Function: start-scheduler (scheduler)
Package

scheduler.

Source

scheduler.lisp.

Function: stop-scheduler (scheduler)
Package

scheduler.

Source

scheduler.lisp.


5.1.2 Generic functions

Generic Function: create-scheduler-task (scheduler time-entry &key start-after &allow-other-keys)
Package

scheduler.

Source

scheduler.lisp.

Methods
Method: create-scheduler-task ((scheduler in-memory-scheduler) (task task) &key &allow-other-keys)
Method: create-scheduler-task :around ((scheduler scheduler) entry &key &allow-other-keys)
Method: create-scheduler-task (scheduler (cron-entry string) &key start-after &allow-other-keys)
Method: create-scheduler-task (scheduler (cron-entry-and-lambda cons) &key start-after &allow-other-keys)
Generic Function: delete-scheduler-task (scheduler task)
Package

scheduler.

Source

scheduler.lisp.

Methods
Method: delete-scheduler-task ((scheduler in-memory-scheduler) (task task))
Method: delete-scheduler-task :around ((scheduler scheduler) task)
Generic Function: execute-task (task)
Package

scheduler-implementation.

Methods
Method: execute-task ((task lambda-task))
Source

scheduler.lisp.

Method: execute-task ((task task))
Source

scheduler.lisp.

Generic Function: list-scheduler-tasks (scheduler)

Lists all tasks registered with the scheduler.

Package

scheduler.

Source

scheduler.lisp.

Methods
Reader Method: list-scheduler-tasks ((in-memory-scheduler in-memory-scheduler))

automatically generated reader method

Target Slot

tasks.

Method: list-scheduler-tasks :around ((scheduler scheduler))
Generic Writer: (setf list-scheduler-tasks) (object)
Package

scheduler.

Methods
Writer Method: (setf list-scheduler-tasks) ((in-memory-scheduler in-memory-scheduler))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

tasks.

Generic Function: parse-entry (entry)

Parses entry to return two values: the time spec and command.

Package

scheduler-implementation.

Source

scheduler.lisp.

Methods
Method: parse-entry ((entry cron-entry))
Generic Function: read-scheduler-task (scheduler task)
Package

scheduler.

Source

scheduler.lisp.

Methods
Method: read-scheduler-task ((scheduler in-memory-scheduler) (task task))
Method: read-scheduler-task :around ((scheduler scheduler) task)
Generic Reader: task-command (object)
Package

scheduler-implementation.

Methods
Reader Method: task-command ((task task))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

command.

Generic Writer: (setf task-command) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf task-command) ((task task))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

command.

Generic Reader: task-last-execution (object)
Package

scheduler-implementation.

Methods
Reader Method: task-last-execution ((task task))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

last-execution.

Generic Writer: (setf task-last-execution) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf task-last-execution) ((task task))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

last-execution.

Generic Reader: task-next-execution (object)
Package

scheduler-implementation.

Methods
Reader Method: task-next-execution ((task task))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

next-execution.

Generic Writer: (setf task-next-execution) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf task-next-execution) ((task task))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

next-execution.

Generic Reader: task-source-entry (object)
Package

scheduler-implementation.

Methods
Reader Method: task-source-entry ((task task))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

source-entry.

Generic Writer: (setf task-source-entry) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf task-source-entry) ((task task))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

source-entry.

Generic Reader: task-time-specs (object)
Package

scheduler-implementation.

Methods
Reader Method: task-time-specs ((task task))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

time-specs.

Generic Writer: (setf task-time-specs) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf task-time-specs) ((task task))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

time-specs.

Generic Function: update-scheduler-task (scheduler task &key cron-entry start-at last-run &allow-other-keys)
Package

scheduler.

Source

scheduler.lisp.

Methods
Method: update-scheduler-task ((scheduler in-memory-scheduler) (task task) &key cron-entry last-run start-at)
Method: update-scheduler-task :around ((scheduler scheduler) task &key)

5.1.3 Standalone methods

Method: initialize-instance :after ((task task) &key time-specs start-after)
Source

scheduler.lisp.

Method: initialize-instance :after ((task lambda-task) &key)
Source

scheduler.lisp.


5.1.4 Classes

Class: cron-entry
Package

scheduler-implementation.

Source

scheduler.lisp.

Direct superclasses

scheduler-entry.

Direct methods
Direct slots
Slot: string
Package

common-lisp.

Initargs

:string

Readers

cron-entry-string.

Writers

This slot is read-only.

Class: in-memory-scheduler
Package

scheduler.

Source

scheduler.lisp.

Direct superclasses

scheduler.

Direct methods
Direct slots
Slot: tasks
Package

scheduler-implementation.

Readers

list-scheduler-tasks.

Writers

(setf list-scheduler-tasks).

Class: scheduler

Thread-safe abstract scheduler class.

Package

scheduler.

Source

scheduler.lisp.

Direct subclasses

in-memory-scheduler.

Direct methods
Direct slots
Slot: %state
Package

scheduler-implementation.

Initform

:stopped

Readers

scheduler-state.

Writers

(setf scheduler-state).

Slot: %lock
Package

scheduler-implementation.

Initform

(bordeaux-threads:make-recursive-lock "scheduler lock")

Readers

scheduler-lock.

Writers

(setf scheduler-lock).

Class: scheduler-entry
Package

scheduler-implementation.

Source

scheduler.lisp.

Direct subclasses

cron-entry.

Class: task
Package

scheduler-implementation.

Source

scheduler.lisp.

Direct subclasses

lambda-task.

Direct methods
Direct slots
Slot: time-specs
Initargs

:time-specs

Readers

task-time-specs.

Writers

(setf task-time-specs).

Slot: command
Initargs

:command

Readers

task-command.

Writers

(setf task-command).

Slot: last-execution
Initargs

:last-execution

Readers

task-last-execution.

Writers

(setf task-last-execution).

Slot: next-execution
Initargs

:next-execution

Readers

task-next-execution.

Writers

(setf task-next-execution).

Slot: source-entry
Initargs

:source-entry

Readers

task-source-entry.

Writers

(setf task-source-entry).


5.2 Internals


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5.2.1 Macros

Macro: ^if (test if-true if-false)
Package

scheduler-implementation.

Source

scheduler.lisp.

Macro: db (lambda-list expression &body body)
Package

scheduler-implementation.

Source

scheduler.lisp.

Macro: mvb (lambda-list expression &body body)
Package

scheduler-implementation.

Source

scheduler.lisp.

Macro: ss (&rest args)
Package

scheduler-implementation.

Source

scheduler.lisp.


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5.2.2 Ordinary functions

Function: %parse-cron-time-1/no-step (spec range)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: %parse-cron-time-1/step (spec range step)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: compute-next-occurance (spec &optional time)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: parse-cron-entry (spec)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: parse-cron-spec (line)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: parse-cron-time-1 (spec range)
Package

scheduler-implementation.

Source

scheduler.lisp.

Function: seed-random-state (seed)

Returns a new random state seeded with ‘object’.

Package

scheduler-implementation.

Source

scheduler.lisp.


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5.2.3 Generic functions

Generic Reader: cron-entry-string (object)
Package

scheduler-implementation.

Methods
Reader Method: cron-entry-string ((cron-entry cron-entry))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

string.

Generic Reader: scheduler-lock (object)
Package

scheduler-implementation.

Methods
Reader Method: scheduler-lock ((scheduler scheduler))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

%lock.

Generic Writer: (setf scheduler-lock) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf scheduler-lock) ((scheduler scheduler))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

%lock.

Generic Reader: scheduler-state (object)
Package

scheduler-implementation.

Methods
Reader Method: scheduler-state ((scheduler scheduler))

automatically generated reader method

Source

scheduler.lisp.

Target Slot

%state.

Generic Writer: (setf scheduler-state) (object)
Package

scheduler-implementation.

Methods
Writer Method: (setf scheduler-state) ((scheduler scheduler))

automatically generated writer method

Source

scheduler.lisp.

Target Slot

%state.


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5.2.4 Classes

Class: lambda-task
Package

scheduler-implementation.

Source

scheduler.lisp.

Direct superclasses

task.

Direct methods

Appendix A Indexes


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A.1 Concepts


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A.2 Functions

Jump to:   %   (   ^  
C   D   E   F   G   I   L   M   P   R   S   T   U  
Index Entry  Section

%
%parse-cron-time-1/no-step: Private ordinary functions
%parse-cron-time-1/step: Private ordinary functions

(
(setf list-scheduler-tasks): Public generic functions
(setf list-scheduler-tasks): Public generic functions
(setf scheduler-lock): Private generic functions
(setf scheduler-lock): Private generic functions
(setf scheduler-state): Private generic functions
(setf scheduler-state): Private generic functions
(setf task-command): Public generic functions
(setf task-command): Public generic functions
(setf task-last-execution): Public generic functions
(setf task-last-execution): Public generic functions
(setf task-next-execution): Public generic functions
(setf task-next-execution): Public generic functions
(setf task-source-entry): Public generic functions
(setf task-source-entry): Public generic functions
(setf task-time-specs): Public generic functions
(setf task-time-specs): Public generic functions

^
^if: Private macros

C
compute-next-occurance: Private ordinary functions
create-scheduler-task: Public generic functions
create-scheduler-task: Public generic functions
create-scheduler-task: Public generic functions
create-scheduler-task: Public generic functions
create-scheduler-task: Public generic functions
cron-entry-string: Private generic functions
cron-entry-string: Private generic functions

D
db: Private macros
delete-scheduler-task: Public generic functions
delete-scheduler-task: Public generic functions
delete-scheduler-task: Public generic functions

E
execute-task: Public generic functions
execute-task: Public generic functions
execute-task: Public generic functions

F
Function, %parse-cron-time-1/no-step: Private ordinary functions
Function, %parse-cron-time-1/step: Private ordinary functions
Function, compute-next-occurance: Private ordinary functions
Function, parse-cron-entry: Private ordinary functions
Function, parse-cron-spec: Private ordinary functions
Function, parse-cron-time-1: Private ordinary functions
Function, seed-random-state: Private ordinary functions
Function, start-scheduler: Public ordinary functions
Function, stop-scheduler: Public ordinary functions

G
Generic Function, (setf list-scheduler-tasks): Public generic functions
Generic Function, (setf scheduler-lock): Private generic functions
Generic Function, (setf scheduler-state): Private generic functions
Generic Function, (setf task-command): Public generic functions
Generic Function, (setf task-last-execution): Public generic functions
Generic Function, (setf task-next-execution): Public generic functions
Generic Function, (setf task-source-entry): Public generic functions
Generic Function, (setf task-time-specs): Public generic functions
Generic Function, create-scheduler-task: Public generic functions
Generic Function, cron-entry-string: Private generic functions
Generic Function, delete-scheduler-task: Public generic functions
Generic Function, execute-task: Public generic functions
Generic Function, list-scheduler-tasks: Public generic functions
Generic Function, parse-entry: Public generic functions
Generic Function, read-scheduler-task: Public generic functions
Generic Function, scheduler-lock: Private generic functions
Generic Function, scheduler-state: Private generic functions
Generic Function, task-command: Public generic functions
Generic Function, task-last-execution: Public generic functions
Generic Function, task-next-execution: Public generic functions
Generic Function, task-source-entry: Public generic functions
Generic Function, task-time-specs: Public generic functions
Generic Function, update-scheduler-task: Public generic functions

I
initialize-instance: Public standalone methods
initialize-instance: Public standalone methods

L
list-scheduler-tasks: Public generic functions
list-scheduler-tasks: Public generic functions
list-scheduler-tasks: Public generic functions

M
Macro, db: Private macros
Macro, mvb: Private macros
Macro, ss: Private macros
Macro, ^if: Private macros
Method, (setf list-scheduler-tasks): Public generic functions
Method, (setf scheduler-lock): Private generic functions
Method, (setf scheduler-state): Private generic functions
Method, (setf task-command): Public generic functions
Method, (setf task-last-execution): Public generic functions
Method, (setf task-next-execution): Public generic functions
Method, (setf task-source-entry): Public generic functions
Method, (setf task-time-specs): Public generic functions
Method, create-scheduler-task: Public generic functions
Method, create-scheduler-task: Public generic functions
Method, create-scheduler-task: Public generic functions
Method, create-scheduler-task: Public generic functions
Method, cron-entry-string: Private generic functions
Method, delete-scheduler-task: Public generic functions
Method, delete-scheduler-task: Public generic functions
Method, execute-task: Public generic functions
Method, execute-task: Public generic functions
Method, initialize-instance: Public standalone methods
Method, initialize-instance: Public standalone methods
Method, list-scheduler-tasks: Public generic functions
Method, list-scheduler-tasks: Public generic functions
Method, parse-entry: Public generic functions
Method, read-scheduler-task: Public generic functions
Method, read-scheduler-task: Public generic functions
Method, scheduler-lock: Private generic functions
Method, scheduler-state: Private generic functions
Method, task-command: Public generic functions
Method, task-last-execution: Public generic functions
Method, task-next-execution: Public generic functions
Method, task-source-entry: Public generic functions
Method, task-time-specs: Public generic functions
Method, update-scheduler-task: Public generic functions
Method, update-scheduler-task: Public generic functions
mvb: Private macros

P
parse-cron-entry: Private ordinary functions
parse-cron-spec: Private ordinary functions
parse-cron-time-1: Private ordinary functions
parse-entry: Public generic functions
parse-entry: Public generic functions

R
read-scheduler-task: Public generic functions
read-scheduler-task: Public generic functions
read-scheduler-task: Public generic functions

S
scheduler-lock: Private generic functions
scheduler-lock: Private generic functions
scheduler-state: Private generic functions
scheduler-state: Private generic functions
seed-random-state: Private ordinary functions
ss: Private macros
start-scheduler: Public ordinary functions
stop-scheduler: Public ordinary functions

T
task-command: Public generic functions
task-command: Public generic functions
task-last-execution: Public generic functions
task-last-execution: Public generic functions
task-next-execution: Public generic functions
task-next-execution: Public generic functions
task-source-entry: Public generic functions
task-source-entry: Public generic functions
task-time-specs: Public generic functions
task-time-specs: Public generic functions

U
update-scheduler-task: Public generic functions
update-scheduler-task: Public generic functions
update-scheduler-task: Public generic functions

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