Add a link to the section "No Spurious Wakeups" in the condition_variable
section.
Make a pass over "migrating fibers between threads," adding a link to the
whole new section on that same topic.
Now that rqueue_ is an STL-compatible container,
priority_scheduler::awakened() can use std::find_if() to search for a context
with a lower priority.
Now that rqueue_ is an intrusive_list, priority_scheduler::property_change()
need not search it: it can simply test with context::ready_is_linked(). Now
that it's a doubly-linked list, we can use context::ready_unlink() to unlink.
Now that method parameters have been renamed from 'f' to 'ctx', change all
references in comments accordingly.
Highlight predicate condition_variable::wait() method in condition_variable
front matter.
Rewrite the explanation of wait()'s Precondition.
Add a condition_variables subsection about no spurious condition_variable
wakeups. Remove "or spuriously" from wakeup conditions in wait*() methods.
First pass through "spurious wakeup" section in Rationale.
First pass through migration.qbk. Use lock_t throughout work_sharing.cpp,
instead of lock_t, lock_count and explicit std::unique_lock<std::mutex>
declarations. Unify treatment of main and dispatcher fibers.
Clarify thread-safety requirements on sched_algorithm::notify() and
suspend_until().
Clarify disable_interruption when rethrowing fiber_interrupted.
Consolidate future<T>::get(): returns T whether T is R, R& or void.
Mention nesting of disable_interruption (which matters) versus nesting of
restore_interruption (which doesn't). Mention that a disable_interruption
constructed within the scope of another disable_interruption is a no-op, both
itself and when passed to restore_interruption.
When packaged_task::operator()() stores a value or an exception, state "as if"
by promise::set_value() or set_exception(): the shared state is set ready.
Similarly for ~packaged_task() and ~promise() setting broken_promise.
Sprinkle links to the Allocator concept, std::allocator and
std::allocator_arg_t where referenced. Similarly for StackAllocator.
Add more cross-reference links where Fiber classes and methods are mentioned.
Also things like std::unique_lock and std::mutex.
Clarify error condition for value_pop() when channel is close()d.
Since fiber_specific_ptr::release() does not invoke cleanup, it should not
throw an exception raised during cleanup.
Document boost::fibers::scheduler::ready_queue_t and expand on the
context::ready_link(), ready_unlink() and ready_is_linked() methods.
Explain migrate() restrictions on is_main_context() and
is_dispatcher_context() context instances.
There's a blanket statement under 'Exceptions' that any exception not caught
by a running fiber will cause the program to terminate. fiber_interrupted is
an exception to this rule: that exception will terminate the fiber, but not
the whole program.
Explain that when a fiber running packaged_task is terminated by
fiber_interrupted, and another fiber calls future::get() on the future from
that packaged_task, fiber_interrupted will be rethrown regardless of
disable_interruption. This is implicit in existing material, but worth making
explicit.
Explicitly state that a thread's main fiber may call (e.g.) this_fiber::yield().
[un]bounded_channel::try_{push,pop}() are not interruption_points. Remove them
from the big list.
Semantics of operator<(fiber, fiber) depend solely on operator<(fiber::id,
fiber::id). Restating semantics of the latter function not needed.
Add a note clarifying the phrase "timeout-related exceptions."
Wrap the full descriptive text for both classes in a QuickBook template
parameterized with class name and appropriate substitutions for the (few)
differences between the two classes.
Note effect of BOOST_USE_SEGMENTED_STACKS if StackAllocator is not explicitly
passed.
Introduce function_heading_for QuickBook template to allow separate
descriptions of swap(fiber), swap(packaged_task) and swap(promise).
Document async() using C++14 std::result_of_t and std::decay_t, aligning with
std::async() documentation.
Rework when_any / when_all examples to use unbounded_channel throughout, since
we always close() the channel after the first value anyway. bounded_channel
doesn't really add much value here.
Make wait_first_outcome_impl() infer its channel pointer type. That way we can
reuse that function instead of coding a separate wait_all_until_error_impl(),
which differs only in using the nchannel facade instead of directly pushing to
unbounded_channel.
Explain use of std::bind() to bind a lambda.
Use a more nuanced discussion of promise lifetime in write_ec() example
function.
Use condition_variable::wait(lock, predicate) in a couple places in
work_sharing.cpp example.
