Conformance and Extension

	Note
	C++11 - Standard for Programming Language C++

]

Table 38.2. C++11 standard Conformance

Section	Description	Status	Comments	Ticket
30	Thread support library	Yes	-	-
30.1	General	-	-	-
30.2	Requirements	-	-	-
30.2.1	Template parameter names	-	-	-
30.2.2	Exceptions	Yes	-	-
30.2.3	Native handles	Yes	-	-
30.2.4	Timing specifications	Yes	-	-
30.2.5	Requirements for Lockable types	Yes	-	-
30.2.5.1	In general	-	-	-
30.2.5.2	BasicLockable requirements	Yes	-	-
30.2.5.3	Lockable requirements	yes	-	-
30.2.5.4	TimedLockable requirements	Yes	-	-
30.2.6	decay_copy	-	-	-
30.3	Threads	Yes	-	-
30.3.1	Class thread	Yes	-	-
30.3.1.1	Class thread::id	Yes	-	-
30.3.1.2	thread constructors	Partial	-	-
30.3.1.3	thread destructor	Yes	-	-
30.3.1.4	thread assignment	Yes	-	-
30.3.1.5	thread members	Yes	-	-
30.3.1.6	thread static members	Yes	-	-
30.3.1.7	thread specialized algorithms	Yes	-	-
30.3.2	Namespace this_thread	Yes	-	-
30.4	Mutual exclusion	Partial	-	-
30.4.1	Mutex requirements	Yes	-	-
30.4.1.1	In general	Yes	-	-
30.4.1.2	Mutex types	Yes	-	-
30.4.1.2.1	Class mutex	Yes	-	-
30.4.1.2.2	Class recursive_mutex	Yes	-	-
30.4.1.3	Timed mutex types	Yes	-	-
30.4.1.3.1	Class timed_mutex	Yes	-	-
30.4.1.3.1	Class recursive_timed_mutex	Yes	-	-
30.4.2	Locks	Yes	-	-
30.4.2.1	Class template lock_guard	Yes	-	-
30.4.2.2	Class template unique_lock	Yes	-	-
30.4.2.2.1	unique_lock constructors, destructor, and assignment	Yes	-	-
30.4.2.2.2	unique_lock locking	Yes	-	-
30.4.2.2.3	unique_lock modifiers	Yes	-	-
30.4.2.2.4	unique_lock observers	Yes	-	-
30.4.3	Generic locking algorithms	Partial	variadic	#6227
30.4.4	Call once	Yes	-	-
30.4.4.1	Struct once_flag	Yes	-	-
30.4.4.2	Function call_once	Yes	-	-
30.5	Condition variables	Yes	-	-
30.5.1	Class condition_variable	Yes	-	-
30.5.2	Class condition_variable_any	Yes	-	-
30.6	Futures	Yes	-	-
30.6.1	Overview	Partial	-	-
30.6.2	Error handling	Yes	-	-
30.6.3	Class future_error	-	-	-
30.6.4	Shared state	-	-	-
30.6.5	Class template promise	Yes	-	-
30.6.6	Class template future	Yes	-	-
30.6.7	Class template shared_future	Yes	-	-
30.6.8	Function template async	Yes	-	-
30.6.9	Class template packaged_task	Yes	-	-

Table 38.3. Extension

Section	Description	Comments
30.3.1.5.x	interrupt	-
30.3.2.x	Interruption	-
30.3.2.y	at_thread_exit	-
30.4.3.x	Generic locking algorithms begin/end	-

C++14 standard Thread library - accepted changes

	Note
	Working Draft, Standard for Programming Language C++

Table 38.4. [@http://isocpp.org/files/papers/N3659.html N3659 Shared locking in C++ revision 2] Conformance

Section	Description	Status	Comments
30.4.1.4	Shared Lockables Types	Yes	-
30.4.1.4.1	shared_mutex class	Yes	-
30.4.2.3	Class template shared_lock	Yes	-

C++14 TS Extensions for Concurrency V1

	Note
	N4107-Extensions for Concurrency

Table 38.5. Improvements to std::future<T> and related APIs]

Section	Description	Status	Comments
2.1	-	-	-
2.2	Class template future	Partial	-
2.2	then	Partial	without implicit unwrapping #10550 and blocking #10551
2.2	is_ready	Yes	-
2.3	Class template shared_future	Partial	-
2.3	then	Partial	Without implicit unwrapping #10550 and blocking #10551
2.3	is_ready	Yes	-
2.4	Function template when_all	Partial	interface not complete #10426 and blocking #10551
2.5	Function template when_any	Partial	interface not complete #10427 and blocking #10551
2.6	Function template when_any_back	No	#XXXX
2.7	Function template make_ready_future	Yes	-

C++1z TS Concurrency - On going proposals

C++ Latches and Barriers
C++ Concurrent Queues
Executors and Schedulers

C++ Latches and Barriers

	Note
	N3600 C++ Latches and Barriers

	Note
	N3817 C++ Latches and Barriers

Table 38.6. C++ Latches and Barriers Conformance

Section	Description	Status	Comments
X.1	Class latch	Partial	A new class latch has been added. The interface is a super set of the one of the proposal, taking some of the functions of the class barrier.
X.2	Class barrier	No	Even if Boost.Thread has a class boost:barrier it doesn't provides the same kind of services. There is an experimental completion_latch that could be used instead.

C++ Concurrent Queues

	Note
	N3533 C++ Concurrent Queues

Table 38.7. C++ Concurrent Queues Conformance

Section	Description	Status	Comments
X.1	Conceptual interface	Partial	The interface provided has some differences respect to this proposal. All the functions having a queue_op_status are not provided. No lock-free concrete classes
X.1.1	Basic Operations	Partial	-
X.1.1.1	push	yes	renamed push_back.
X.1.1.2	value_pop	no	renamed pull_front with two flavors.
X.1.2	Non-waiting operations	-	-
X.1.2.1	try_push	yes	renamed try_push_back
X.1.2.2	try_pop	yes	renamed try_pull_back
X.1.3	Non-blocking operations	-	-
X.1.3.1	nonblocking_push	Yes	renamed nonblocking_push_back
X.1.3.2	nonblocking_pop	Yes	renamed nonblocking_pull_front
X.1.4	Push-front operations	No	-
X.1.5	Closed queues	Partial	-
X.1.5.1	close	Yes	-
X.1.5.2	is_closed	Yes	renamed closed
X.1.5.3	wait_push	Yes	renamed wait_push_back
X.1.5.4	wait_pop	Yes	renamed wait_pull_front
X.1.5.5	wait_push_front	no	-
X.1.5.6	wait_pop_back	no	-
X.1.5.6	open	no	-
X.1.6	Empty and Full Queues	Yes	-
X.1.6.1	is_empty	Yes	-
X.1.6.2	is_full	Yes	Added capacity
X.1.7	Queue Names	No	Not considered a must for the time been.
X.1.8	Element Type Requirements	Yes?	-
X.1.9	Exception Handling	Yes?	-
X.1.10	Queue Ordering	Yes?	-
X.1.11	Lock-Free Implementations	No	waiting to stabilize the lock-based interface. Will use Boost.LockFree once it is Boost.Move aware.
X.2	Concrete queues	Partial	-
X.2.1	Locking Buffer Queue	Partial	classes sync_queue and a sync_bounded_queue.
X.2.1	Lock-Free Buffer Queue	No	waiting to stabilize the lock-based interface. Will use Boost.LockFree once it is Boost.Move aware.
X.3	Additional Conceptual Tools	No	-
X.3.1	Fronts and Backs	No	-
X.3.2	Streaming Iterators	No	-
X.3.3	Storage Iterators	No	-
X.3.4	Binary Interfaces	No	-
X.3.4	Managed Indirection	No	-

Executors and Schedulers

	Note
	N3785 Executors and Schedulers

Table 38.8. Executors and Schedulers

Section	Description	Status	Comments
V.1.1	Class `executor`	Yes	-
V.1.1	`add`	Yes	renamed with a function template `submit`
V.1.1	`num_of_pendin_closures`	No
V.1.2	Class sceduled_executor	No	-
V.1.2	`add_at`	No	renamed with a function template `scheduler::submit_at`
V.1.2	`add_after`	No	renamed with a function template `scheduler::submit_after`
V.2	Concrete executor classes	No	-
V.2.1	`thread_pool`	Yes	static version `basic_thread_pool`, dynamic one `execduler_adaptor<basic_thread_pool>`
V.2.2	`serial_executor`	yes	-
V.2.3	`loop_executor`	Yes	static version loop_scheduler, dynamic one `execduler_adaptor<loop_scheduler>`
V.2.4	`inline_executor`	Yes	static version `inline_executor`, dynamic one `execduler_adaptor<inline_executor>`
V.2.5	`thread_executor`	Yes	static version `thread_executor`, dynamic one `execduler_adaptor<thread_executor>`

	Note
	N3784-Improvements to `std::future<T> and Related APIs

Table 38.9. `async, future/shared_future::then`and Executors

Section	Description	Status	Comments
30.6.6	`future<T>::then`	Yes
30.6.7	`shared_future<T>::then`	Yes
30.6.8	`async`	Yes	-

	Note
	N4143-Executors and schedulers, revision 4

Table 38.10. Executors and Schedulers - revision 4

Section	Description	Status	Comments
VI.A	Executor Concept	Yes	`wrapper_type` renamed by `work` and `spawn by`submit `]] [[VI.A.1] [`thread_per_task_executor	Yes	renamed `thread_executor`
VI.A.2	`thread_pool_executor`	Yes	renamed `basic_thread_pool`
VI.A.3	`system_executor`	No	-
VI.A.4	`loop_executor`	Yes	-
VI.A.5	`serial_executor`	yes	-
VI.B	`executor_ref`	yes	-
VI.C	`executor`	yes	renamed `gen_executor_ref`
VI.D	Free Functions and Helper Objects	partial	-
VI.D	`make_package`	No	-
VI.D	`spawn_future`	No	`async(Ex&, ...)` is similar but returns a blocking future.
VI.D	`spawn`	No	-
VI.D	`task_wrapper`	No	renamed `resubmitter`
VI.D	`set_executor`	No	renamed `resubmit`
VI.D	`function_wrapper`	Partial	renamed `work`