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Cygwin: implement extensible clock interface

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- Drop hires_[nm]s clocks, rename hires.h to clock.h.

- Implement clk_t class as an extensible clock class in new file clock.cc.

- Introduce get_clock(clock_id) returning a pointer to the clk_t instance
  for clock_id.  Provide the following methods along the lines of the former
  hires classes:

	void		clk_t::nsecs (struct timespec *);
	ULONGLONG	clk_t::nsecs ();
	LONGLONG	clk_t::usecs ();
	LONGLONG	clk_t::msecs ();
	void 		clk_t::resolution (struct timespec *);

- Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW, CLOCK_MONOTONIC_COARSE
  and CLOCK_BOOTTIME clocks.

- Allow clock_nanosleep, pthread_condattr_setclock and timer_create to use
  all new clocks (both clocks should be usable with a small tweak, though).

- Bump DLL major version to 2.12.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2018-11-27 13:47:02 +01:00
parent f4d6ef2d41
commit c05df02725
20 changed files with 541 additions and 297 deletions
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10
winsup/cygwin/include/cygwin/version.h
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@ -10,8 +10,8 @@ details. */
the Cygwin shared library". This version is used to track important
changes to the DLL and is mainly informative in nature. */
#define CYGWIN_VERSION_DLL_MAJOR 2011
#define CYGWIN_VERSION_DLL_MINOR 3
#define CYGWIN_VERSION_DLL_MAJOR 2012
#define CYGWIN_VERSION_DLL_MINOR 0
/* Major numbers before CYGWIN_VERSION_DLL_EPOCH are incompatible. */
@ -498,13 +498,15 @@ details. */
327: Export pthread_tryjoin_np, pthread_timedjoin_np.
328: Export aio_cancel, aio_error, aio_fsync, aio_read, aio_return,
aio_suspend, aio_write, lio_listio.
329: Export sched_getcpu..
329: Export sched_getcpu.
330: Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW, CLOCK_MONOTONIC_COARSE,
CLOCK_BOOTTIME.
Note that we forgot to bump the api for ualarm, strtoll, strtoull,
sigaltstack, sethostname. */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 329
#define CYGWIN_VERSION_API_MINOR 330
/* There is also a compatibity version number associated with the shared memory
regions. It is incremented when incompatible changes are made to the shared