Class NewRelic::Agent::Threading::BacktraceService
In: lib/new_relic/agent/threading/backtrace_service.rb
Parent: Object

Methods

adjust_polling_time   aggregate_backtraces   aggregate_global_backtrace   allowed_bucket?   buffer_backtrace_for_thread   effective_polling_period=   find_effective_polling_period   harvest   is_resque?   is_supported?   need_backtrace?   new   on_transaction_finished   poll   record_polling_time   record_skew   record_supportability_metrics   running?   sample_thread   should_buffer?   should_profile_agent_code?   start   stop   subscribe   subscribed?   unsubscribe   update_values_from_profiles   watching_for_transaction?  

Constants

ALL_TRANSACTIONS = "**ALL**".freeze
MAX_BUFFER_LENGTH = 500

Attributes

buffer  [R] 
effective_polling_period  [R] 
overhead_percent_threshold  [R] 
profile_agent_code  [RW] 
profiles  [R]  This method is expected to be called with @lock held.
worker_loop  [R] 
worker_thread  [RW] 

Public Class methods

is_resque?()

Because of Resque‘s forking, we don‘t poll thread backtraces for it. To accomplish that would require starting a new backtracing thread in each forked worker, and merging profiles across the pipe channel.

Public Instance methods

adjust_polling_time(now, poll_start)

If our overhead % exceeds the threshold, bump the next poll period relative to how much larger our overhead is than allowed

aggregate_backtraces(backtraces, name, start, duration, bucket, thread)

This method is expected to be called with @lock held.

aggregate_global_backtrace(backtrace, bucket, thread)

This method is expected to be called with @lock held.

buffer_backtrace_for_thread(thread, timestamp, backtrace, bucket)

This method is expected to be called with @lock held.

find_effective_polling_period()

This method is expected to be called with @lock held.

need_backtrace?(bucket)

This method is expected to be called with @lock held.

running?()

Public interface

sample_thread(thread)

This method is expected to be called with @lock held.

should_buffer?(bucket)

This method is expected to be called with @lock held.

should_profile_agent_code?()

This method is expected to be called with @lock held.

stop()

This method is expected to be called with @lock held

watching_for_transaction?()

This method is expected to be called with @lock held

[Validate]