module Open_option : sig ... end
module Facility : sig ... end
Types of messages
module Level : sig ... end
val setlogmask : ?allowed_levels:Level.t list -> ?from_level:Level.t -> ?to_level:Level.t -> unit -> unit
All levels in allowed_levels
will be allowed, and additionally all ranging from from_level
to to_level
(inclusive).
Logging functions
val openlog : ?id:string -> ?options:Open_option.t list -> ?facility:Facility.t -> unit -> unit
openlog ~id ~options ~facility ()
opens a connection to the system logger (possibly delayed) using prefixed identifier id
, options
, and facility
.
WARNING: this function leaks the id
argument, if provided. There is no way around that if syslog is called in a multi-threaded environment! Therefore it shouldn't be called too often. What for, anyway?
Calling openlog
before syslog
is optional. If you forget, syslog will do it for you with the defaults.
val syslog : ?facility:Facility.t -> ?level:Level.t -> string -> unit
syslog ~facility ~level message
logs message
using syslog with facility
at level
.
val syslogf : ?facility:Facility.t -> ?level:Level.t -> ('a, unit, string, string, string, unit) CamlinternalFormatBasics.format6 -> 'a
syslog_printf
acts like syslog
, but allows printf
-style specification of the message.