package trace

You can search for identifiers within the package.

in-package search v0.2.0

trace
- Trace
trace.core
- Trace_core
  - Collector
    
    S
  - Level
  - Meta_map
    
    KEY_IMPL
    
    Key
    
    M
trace.private.util
- Trace_private_util
trace.subscriber
- Trace_subscriber
  - Callbacks
    
    Dummy
    
    S
  - Subscriber

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Trace subscribers

type t =

| Sub : {
1. st : 'st;
2. callbacks : 'st Callbacks.t;
} -> t

A trace subscriber. It pairs a set of callbacks with the state they need (which can contain a file handle, a socket to write events to, config, etc.).

The design goal for this is that it should be possible to avoid allocations whenever the trace collector invokes the callbacks.

val dummy : t

Dummy subscriber that ignores every call.

val tee : t -> t -> t

tee s1 s2 is a subscriber that forwards every call to s1 and s2 both.

val tee_l : t list -> t

Tee multiple subscribers, ie return a subscriber that forwards to all the subscribers in subs.