diff options
| -rw-r--r-- | Doc/library/time.rst | 35 | ||||
| -rw-r--r-- | Doc/whatsnew/3.7.rst | 14 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2017-11-01-03-28-24.bpo-31917.DYQL0g.rst | 2 | ||||
| -rw-r--r-- | Modules/timemodule.c | 9 |
4 files changed, 60 insertions, 0 deletions
diff --git a/Doc/library/time.rst b/Doc/library/time.rst index c5d1e83..253df73 100644 --- a/Doc/library/time.rst +++ b/Doc/library/time.rst @@ -663,6 +663,21 @@ Clock ID Constants These constants are used as parameters for :func:`clock_getres` and :func:`clock_gettime`. +.. data:: CLOCK_BOOTTIME + + Identical to :data:`CLOCK_MONOTONIC`, except it also includes any time that + the system is suspended. + + This allows applications to get a suspend-aware monotonic clock without + having to deal with the complications of :data:`CLOCK_REALTIME`, which may + have discontinuities if the time is changed using ``settimeofday()`` or + similar. + + Availability: Linux 2.6.39 or later. + + .. versionadded:: 3.7 + + .. data:: CLOCK_HIGHRES The Solaris OS has a ``CLOCK_HIGHRES`` timer that attempts to use an optimal @@ -703,6 +718,15 @@ These constants are used as parameters for :func:`clock_getres` and .. versionadded:: 3.3 +.. data:: CLOCK_PROF + + High-resolution per-process timer from the CPU. + + Availability: FreeBSD 3 or later, NetBSD 7 or later, OpenBSD. + + .. versionadded:: 3.7 + + .. data:: CLOCK_THREAD_CPUTIME_ID Thread-specific CPU-time clock. @@ -712,6 +736,17 @@ These constants are used as parameters for :func:`clock_getres` and .. versionadded:: 3.3 +.. data:: CLOCK_UPTIME + + Time whose absolute value is the time the system has been running and not + suspended, providing accurate uptime measurement, both absolute and + interval. + + Availability: FreeBSD 7 or later, OpenBSD 5.5 or later. + + .. versionadded:: 3.7 + + The following constant is the only parameter that can be sent to :func:`clock_settime`. diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst index d3c3c1f..d5836d5 100644 --- a/Doc/whatsnew/3.7.rst +++ b/Doc/whatsnew/3.7.rst @@ -310,6 +310,20 @@ string expression pattern for braced placeholders and non-braced placeholders separately. (Contributed by Barry Warsaw in :issue:`1198569`.) +time +---- + +Add new clock identifiers: + +* :data:`time.CLOCK_BOOTTIME` (Linux): Identical to + :data:`time.CLOCK_MONOTONIC`, except it also includes any time that the + system is suspended. +* :data:`time.CLOCK_PROF` (FreeBSD, NetBSD and OpenBSD): High-resolution + per-process timer from the CPU. +* :data:`time.CLOCK_UPTIME` (FreeBSD, OpenBSD): Time whose absolute value is + the time the system has been running and not suspended, providing accurate + uptime measurement, both absolute and interval. + unittest.mock ------------- diff --git a/Misc/NEWS.d/next/Library/2017-11-01-03-28-24.bpo-31917.DYQL0g.rst b/Misc/NEWS.d/next/Library/2017-11-01-03-28-24.bpo-31917.DYQL0g.rst new file mode 100644 index 0000000..dbfe92a --- /dev/null +++ b/Misc/NEWS.d/next/Library/2017-11-01-03-28-24.bpo-31917.DYQL0g.rst @@ -0,0 +1,2 @@ +Add 3 new clock identifiers: :data:`time.CLOCK_BOOTTIME`, +:data:`time.CLOCK_PROF` and :data:`time.CLOCK_UPTIME`. diff --git a/Modules/timemodule.c b/Modules/timemodule.c index b5e168f..347c828 100644 --- a/Modules/timemodule.c +++ b/Modules/timemodule.c @@ -1389,6 +1389,15 @@ PyInit_time(void) #ifdef CLOCK_THREAD_CPUTIME_ID PyModule_AddIntMacro(m, CLOCK_THREAD_CPUTIME_ID); #endif +#ifdef CLOCK_PROF + PyModule_AddIntMacro(m, CLOCK_PROF); +#endif +#ifdef CLOCK_BOOTTIME + PyModule_AddIntMacro(m, CLOCK_BOOTTIME); +#endif +#ifdef CLOCK_UPTIME + PyModule_AddIntMacro(m, CLOCK_UPTIME); +#endif if (!initialized) { if (PyStructSequence_InitType2(&StructTimeType, |