Module: Datadog::Profiling::Ext::NativePthread

Extended by:
FFI::Library
Defined in:
lib/ddtrace/profiling/ext/cthread.rb

Overview

Enables interfacing with pthread via FFI

Class Method Summary collapse

Class Method Details

.get_clock_id(thread, pthread_id) ⇒ Object 



28
29
30
31
32
33
34
 
# File 'lib/ddtrace/profiling/ext/cthread.rb', line 28

def self.get_clock_id(thread, pthread_id)
  return unless ::Thread.current == thread && pthread_id

  clock = CClockId.new
  clock[:value] = 0
  pthread_getcpuclockid(pthread_id, clock).zero? ? clock[:value] : nil
end

.get_pthread_thread_id(thread) ⇒ Object

NOTE: Only returns thread ID for thread that evaluates this call.

a.k.a. evaluating `get_pthread_thread_id(thread_a)` from within
`thread_b` will return `thread_b`'s thread ID, not `thread_a`'s.



22
23
24
25
26
 
# File 'lib/ddtrace/profiling/ext/cthread.rb', line 22

def self.get_pthread_thread_id(thread)
  return unless ::Thread.current == thread

  pthread_self
end