- Fixed build failures on Windows. The timespec struct is not supported by older versions of Visual Studio. I changed the internal representation inside of the *_timespec_timepoint classes to a boost::intmax_t representing the number of nanoseconds since the epoch.
- Fixed some functions that wouldn't execute at all if they were provided a negative time duration or an absolute time that was in the past. From what I understand, they should instead execute once and then return immediately.
- Moved pthread/timespec.hpp to detail/timespec.hpp.
- Deleted detail/internal_clock.hpp and moved the seven relevant lines into detail/timespec.hpp. This keeps all of the internal clock declarations in one place.
- Renamed thread_detail::internal_clock_t to detail::internal_chrono_clock to be consistent with and yet clearly differentiated from detail::internal_timespec_clock.
- Removed "using namespace chrono" to eliminate ambiguious namespace resolution when referencing detail::internal_chrono_clock.
- Re-enabled a few tests on Windows that had previously been disabled. I want to see whether or not they still need to be disabled.
* Added a constructor to timespec_duration, real_timespec_timepoint, and mono_timespec_timepoint that takes an intmax_t representing the number of nanoseconds in the timespec.
* Added a getNs() function to timespec_duration, real_timespec_timepoint, and mono_timespec_timepoint that returns an intmax_t representing the number of nanoseconds in the timespec.
* Added a timespec_milliseconds() function that takes an integer representing milliseconds and returns a timespec_duration.
* Removed some unnecessary BOOST_SYMBOL_VISIBLE declarations.
* Removed the unnecessary d100 variable declarations.
* Deleted a couple of unnecessary calls to internal_clock_t::now() in v2/thread.hpp.
* Deleted the hidden::sleep_until() functions, which are no longer being used.
* Deleted the condition_variable::do_wait_for() function, which is no longer being used.
* Deleted the sleep_mutex and sleep_condition variables in pthread/thread_data.hpp, which are no longer being used.
* Fixed the interruption-point versions of sleep_for/sleep_until() to always use condition variables.
* Fixed the no-interruption-point versions of sleep_for/sleep_until() to use pthread_delay_np or nanosleep whenever possible.
* Updated hidden::sleep_for() to always use a condition variable.
* Updated no_interruption_point::hidden::sleep_for() to use pthread_delay_np or nanosleep whenever possible.
