Commit Graph

60 Commits

Author SHA1 Message Date
Victor Stinner
9ae47dfbd9 pytime: add _PyTime_Round() helper to factorize code 2015-09-09 22:28:58 +02:00
Victor Stinner
ce6aa749b4 Make _PyTime_RoundHalfEven() private again 2015-09-09 22:28:09 +02:00
Victor Stinner
7667f58151 Issue #23517: fromtimestamp() and utcfromtimestamp() methods of
datetime.datetime now round microseconds to nearest with ties going to nearest
even integer (ROUND_HALF_EVEN), as round(float), instead of rounding towards
-Infinity (ROUND_FLOOR).

pytime API: replace _PyTime_ROUND_HALF_UP with _PyTime_ROUND_HALF_EVEN. Fix
also _PyTime_Divide() for negative numbers.

_PyTime_AsTimeval_impl() now reuses _PyTime_Divide() instead of reimplementing
rounding modes.
2015-09-09 01:02:23 +02:00
Victor Stinner
adfefa527a Issue #23517: Fix implementation of the ROUND_HALF_UP rounding mode in
datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp().
microseconds sign should be kept before rounding.
2015-09-04 23:57:25 +02:00
Victor Stinner
5786aef382 Don't abuse volatile keyword in pytime.c
Only use it on the most important number. This change fixes also a compiler
warning on modf().
2015-09-03 16:33:16 +02:00
Victor Stinner
29ee6745af Enhance _PyTime_AsTimespec()
Ensure that the tv_nsec field is set, even if the function fails
with an overflow.
2015-09-03 16:25:45 +02:00
Victor Stinner
5a682c9ca5 Merge 3.5 (monotonic) 2015-09-03 00:15:23 +02:00
Victor Stinner
5ad5821d09 oops, rename pymonotonic_new() to pymonotonic()
I was not supposed to commit the function with the name pymonotonic_new(). I
forgot to rename it.
2015-09-03 00:14:58 +02:00
Victor Stinner
c3c616c3d1 Issue #24707: Remove assertion in monotonic clock
Don't check anymore at runtime that the monotonic clock doesn't go backward.
Yes, it happens. It occurs sometimes each month on a Debian buildbot slave
running in a VM.

The problem is that Python cannot do anything useful if a monotonic clock goes
backward. It was decided in the PEP 418 to not fix the system, but only expose
the clock provided by the OS.
2015-09-03 00:13:46 +02:00
Victor Stinner
2ec558739e Issue #23517: datetime.timedelta constructor now rounds microseconds to nearest
with ties going away from zero (ROUND_HALF_UP), as Python 2 and Python older
than 3.3, instead of rounding to nearest with ties going to nearest even
integer (ROUND_HALF_EVEN).
2015-09-02 19:16:07 +02:00
Victor Stinner
24b822e21e Issue #23517: Try to fix test_time on "x86 Ubuntu Shared 3.x" buildbot 2015-09-02 11:58:56 +02:00
Victor Stinner
67edcc905d Issue #23517: Fix _PyTime_ObjectToDenominator()
* initialize numerator on overflow error ensure that numerator is smaller than
* denominator.
2015-09-02 10:37:46 +02:00
Victor Stinner
744742320f Issue #23517: Add "half up" rounding mode to the _PyTime API 2015-09-02 01:43:56 +02:00
Victor Stinner
bbdda21a7a Move assertion inside _PyTime_ObjectToTimeval()
Change also _PyTime_FromSeconds() assertion to ensure that the _PyTime_t type
is used.
2015-09-02 00:50:43 +02:00
Victor Stinner
53e137c8dd Refactor pytime.c
Move code to convert double timestamp to subfunctions.
2015-09-02 00:49:16 +02:00
Victor Stinner
13019fdef3 Issue #22117: Add a new _PyTime_FromSeconds() function
Fix also _Py_InitializeEx_Private(): initialize time before initializing
import, import_init() uses the _PyTime API (for thread locks).
2015-04-03 13:10:54 +02:00
Victor Stinner
62d1c70eff Issue #22117, issue #23485: Fix _PyTime_AsMilliseconds() and
_PyTime_AsMicroseconds() rounding.

Add also unit tests.
2015-04-01 17:47:07 +02:00
Victor Stinner
fa09beb150 Issue #23485: Add _PyTime_FromMillisecondsObject() function 2015-03-30 21:36:10 +02:00
Victor Stinner
45cff0c0e6 Issue #22117: Try to fix rounding in conversion from Python double to _PyTime_t
using the C volatile keyword.
2015-03-30 10:22:16 +02:00
Victor Stinner
a695f83f0d Issue #22117: Remove _PyTime_ROUND_DOWN and _PyTime_ROUND_UP rounding methods
Use _PyTime_ROUND_FLOOR and _PyTime_ROUND_CEILING instead.
2015-03-30 03:57:14 +02:00
Victor Stinner
bcdd777d3c Issue #22117: Add _PyTime_ROUND_CEILING rounding method for timestamps
Add also more tests for ROUNd_FLOOR.
2015-03-30 03:52:49 +02:00
Victor Stinner
edddf991d9 Issue #22117: Add assertions to _PyTime_AsTimeval() and _PyTime_AsTimespec() to
check that microseconds and nanoseconds fits into the specified range.
2015-03-30 02:54:57 +02:00
Victor Stinner
ea9c0dd2c2 Issue #22117: Fix usage of _PyTime_AsTimeval()
Add _PyTime_AsTimeval_noraise() function. Call it when it's not possible (or
not useful) to raise a Python exception on overflow.
2015-03-30 02:51:13 +02:00
Victor Stinner
f81f0f9c63 Issue #22117: Fix rounding and implement _PyTime_ROUND_FLOOR in:
- _PyTime_ObjectToTime_t()
- _PyTime_ObjectToTimespec()
- _PyTime_ObjectToTimeval()
2015-03-30 00:44:06 +02:00
Victor Stinner
1bd18ba9a7 Issue #22117: Cleanup pytime.c/.h 2015-03-30 00:25:38 +02:00
Victor Stinner
09e5cf28ae Issue #22117: Use the _PyTime_t API in _datetime.datetime() constructor
* Remove _PyTime_gettimeofday()
* Add _PyTime_GetSystemClock()
2015-03-30 00:09:18 +02:00
Victor Stinner
cb0c60258b Issue #22117: Fix _PyTime_GetMonotonicClock() and
_PyTime_GetSystemClockWithInfo() to not raise an exception and return 0 on
error (it should never occur)
2015-03-28 05:24:19 +01:00
Victor Stinner
02937aab13 Issue #22117: Add the new _PyTime_ROUND_FLOOR rounding method for the datetime
module. time.clock_settime() now uses this rounding method instead of
_PyTime_ROUND_DOWN to handle correctly dates before 1970.
2015-03-28 05:02:39 +01:00
Victor Stinner
b3b4544070 Issue #22117: Use the _PyTime_t API for time.clock_settime()
Remove also the now unused _PyTime_AddDouble() function.
2015-03-28 04:09:41 +01:00
Victor Stinner
c337838af7 Issue #22117: Use the new _PyTime_t API in the select module 2015-03-28 05:07:51 +01:00
Victor Stinner
f5faad2bf0 Issue #22117: The thread module uses the new _PyTime_t timestamp API
Add also a new _PyTime_AsMicroseconds() function.

threading.TIMEOUT_MAX is now be smaller: only 292 years instead of 292,271
years on 64-bit system for example. Sorry, your threads will hang a *little
bit* shorter. Call me if you want to ensure that your locks wait longer, I can
share some tricks with you.
2015-03-28 03:52:05 +01:00
Victor Stinner
95e9cef6f0 Issue #22117: Write unit tests for _PyTime_AsTimeval()
* _PyTime_AsTimeval() now ensures that tv_usec is always positive
* _PyTime_AsTimespec() now ensures that tv_nsec is always positive
* _PyTime_AsTimeval() now returns an integer on overflow instead of raising an
  exception
2015-03-28 01:26:47 +01:00
Victor Stinner
34dc0f46ae Issue #22117: The signal modules uses the new _PyTime_t API
* Add _PyTime_AsTimespec()
* Add unit tests for _PyTime_AsTimespec()
2015-03-27 18:19:03 +01:00
Victor Stinner
a47b881d86 Issue #22117: time.time() now uses the new _PyTime_t API
* Add _PyTime_GetSystemClockWithInfo()
2015-03-27 18:16:17 +01:00
Victor Stinner
4bfb460d88 Issue #22117: time.monotonic() now uses the new _PyTime_t API
* Add _PyTime_FromNanoseconds()
* Add _PyTime_AsSecondsDouble()
* Add unit tests for _PyTime_AsSecondsDouble()
2015-03-27 22:27:24 +01:00
Victor Stinner
992c43fec9 Issue #22117: Fix rounding in _PyTime_FromSecondsObject()
* Rename _PyTime_FromObject() to _PyTime_FromSecondsObject()
* Add _PyTime_AsNanosecondsObject() and _testcapi.pytime_fromsecondsobject()
* Add unit tests
2015-03-27 17:12:45 +01:00
Victor Stinner
eb352295fd Issue #23451, #22117: Python 3.5 now requires Windows Vista or newer, so
GetTickCount64() is now always available.
2015-03-27 14:12:08 +01:00
Victor Stinner
cb29f0177c Issue #22117: Add a new Python timestamp format _PyTime_t to pytime.h
In practice, _PyTime_t is a number of nanoseconds. Its C type is a 64-bit
signed number. It's integer value is in the range [-2^63; 2^63-1]. In seconds,
the range is around [-292 years; +292 years]. In term of Epoch timestamp
(1970-01-01), it can store a date between 1677-09-21 and 2262-04-11.

The API has a resolution of 1 nanosecond and use integer number. With a
resolution on 1 nanosecond, 64-bit IEEE 754 floating point numbers loose
precision after 194 days. It's not the case with this API. The drawback is
overflow for values outside [-2^63; 2^63-1], but these values are unlikely for
most Python modules, except of the datetime module.

New functions:

- _PyTime_GetMonotonicClock()
- _PyTime_FromObject()
- _PyTime_AsMilliseconds()
- _PyTime_AsTimeval()

This change uses these new functions in time.sleep() to avoid rounding issues.

The new API will be extended step by step, and the old API will be removed step
by step. Currently, some code is duplicated just to be able to move
incrementally, instead of pushing a large change at once.
2015-03-27 13:31:18 +01:00
Victor Stinner
580ef1345a Cleanup pytime.c: add XXX_TO_YYY constants (ex: SEC_TO_US) 2015-03-20 01:55:04 +01:00
Victor Stinner
9a8089b32a Issue #23646: Enhance precision of time.sleep() and socket timeout when
interrupted by a signal

Add a new _PyTime_AddDouble() function and remove _PyTime_ADD_SECONDS() macro.
The _PyTime_ADD_SECONDS only supported an integer number of seconds, the
_PyTime_AddDouble() has subsecond resolution.
2015-03-20 01:42:20 +01:00
Steve Dower
3e96f324dc Issue #23451: Update pyconfig.h for Windows to require Vista headers and remove unnecessary version checks. 2015-03-02 08:01:10 -08:00
Victor Stinner
5789cfbb56 Issue #22043: Fix pymonotonic(), use tv_usec=-1 as a marker to skip
the monotonic test
2014-09-03 09:43:48 +02:00
Victor Stinner
ae58649721 Issue #22043: time.monotonic() is now always available
threading.Lock.acquire(), threading.RLock.acquire() and socket operations now
use a monotonic clock, instead of the system clock, when a timeout is used.
2014-09-02 23:18:25 +02:00
Victor Stinner
9bb758cee7 Issue #22043: Fix _PyTime_gettimeofday() if HAVE_GETTIMEOFDAY
Ensure also that the tv_usec field is consistent: in range [0; 999999].
2014-09-02 23:01:40 +02:00
Victor Stinner
0011124dc2 Issue #22043: _PyTime_Init() now checks if the system clock works.
Other changes:

* The whole _PyTime API is private (not defined if Py_LIMITED_API is set)
* _PyTime_gettimeofday_info() also returns -1 on error
* Simplify PyTime_gettimeofday(): only use clock_gettime(CLOCK_REALTIME) or
  gettimeofday() on UNIX. Don't fallback to ftime() or time() anymore.
2014-08-29 16:31:59 +02:00
Victor Stinner
7efb83393c Issue #22287: On UNIX, _PyTime_gettimeofday() now uses
clock_gettime(CLOCK_REALTIME) if available. As a side effect, Python now
depends on the librt library on Solaris and on Linux (only with glibc older
than 2.17).
2014-08-29 15:41:08 +02:00
Victor Stinner
3c1b379ebd Issue #20320: select.select() and select.kqueue.control() now round the timeout
aways from zero, instead of rounding towards zero.

It should make test_asyncio more reliable, especially test_timeout_rounding() test.
2014-02-17 00:02:43 +01:00
Victor Stinner
2b89fdf7eb PEP 418: Rename adjusted attribute to adjustable in time.get_clock_info() result
Fix also its value on Windows and Linux according to its documentation:
"adjustable" indicates if the clock *can be* adjusted, not if it is or was
adjusted.

In most cases, it is not possible to indicate if a clock is or was adjusted.
2012-06-12 22:46:37 +02:00
Larry Hastings
76ad59b7e8 Issue #14127: Add ns= parameter to utime, futimes, and lutimes.
Removed futimens as it is now redundant.
Changed shutil.copystat to use st_atime_ns and st_mtime_ns from os.stat
and ns= parameter to utime--it once again preserves exact metadata on Linux!
2012-05-03 00:30:07 -07:00
Benjamin Peterson
49a69e4d48 strip is_ prefixes on clock_info fields 2012-05-01 09:38:34 -04:00