stan::math::ad_tape_observer Class Reference

Detailed Description

TBB observer object which is a callback hook called whenever the TBB scheduler adds a new thread to the TBB managed threadpool.

This hook ensures that each worker thread has an initialized AD tape ready for use.

Refer to https://software.intel.com/content/www/us/en/develop/documentation/tbb-documentation/top/intel-threading-building-blocks-developer-reference/task-scheduler/taskschedulerobserver.html for details on the observer concept.

Definition at line 27 of file init_chainablestack.hpp.

#include <init_chainablestack.hpp>

Inheritance diagram for stan::math::ad_tape_observer:

Public Member Functions
	ad_tape_observer ()
	~ad_tape_observer ()
void	on_scheduler_entry (bool worker)
void	on_scheduler_exit (bool worker)

Private Types
using	stack_ptr = std::unique_ptr< ChainableStack >
using	ad_map = std::unordered_map< std::thread::id, stack_ptr >

Private Attributes
ad_map	thread_tape_map_
std::mutex	thread_tape_map_mutex_

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The documentation for this class was generated from the following file:

• stan/math/rev/core/init_chainablestack.hpp