Module: Bulldogger::Probe::Registry

Defined in:
lib/bulldogger/probe/registry.rb

Overview

Tracks which target labels currently have a live probe session, process-wide. Two concurrent sessions on the same method would each build their own TracePoint and double-count every call; the contract requires that be caught at start, by name, not discovered later as doubled statistics.

Class Method Summary collapse

Class Method Details

.release(labels) ⇒ Object 



26
27
28
 
# File 'lib/bulldogger/probe/registry.rb', line 26

def release(labels)
  @mutex.synchronize { labels.each { |label| @active.delete(label) } }
end

.reserve!(labels) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
 
# File 'lib/bulldogger/probe/registry.rb', line 15

def reserve!(labels)
  @mutex.synchronize do
    conflict = labels.find { |label| @active[label] }
    if conflict
      raise ArgumentError, "bulldogger: probe target #{conflict.inspect} is already being probed"
    end

    labels.each { |label| @active[label] = true }
  end
end