This repository was archived by the owner on Apr 12, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2
Expand file tree
/
Copy pathpytime.h
More file actions
246 lines (197 loc) · 8.72 KB
/
Copy pathpytime.h
File metadata and controls
246 lines (197 loc) · 8.72 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
#ifndef Py_LIMITED_API
#ifndef Py_PYTIME_H
#define Py_PYTIME_H
#include "pyconfig.h" /* include for defines */
#include "object.h"
/**************************************************************************
Symbols and macros to supply platform-independent interfaces to time related
functions and constants
**************************************************************************/
#ifdef __cplusplus
extern "C" {
#endif
/* _PyTime_t: Python timestamp with subsecond precision. It can be used to
store a duration, and so indirectly a date (related to another date, like
UNIX epoch). */
typedef int64_t _PyTime_t;
#define _PyTime_MIN PY_LLONG_MIN
#define _PyTime_MAX PY_LLONG_MAX
typedef enum {
/* Round towards minus infinity (-inf).
For example, used to read a clock. */
_PyTime_ROUND_FLOOR=0,
/* Round towards infinity (+inf).
For example, used for timeout to wait "at least" N seconds. */
_PyTime_ROUND_CEILING=1,
/* Round to nearest with ties going to nearest even integer.
For example, used to round from a Python float. */
_PyTime_ROUND_HALF_EVEN=2,
/* Round away from zero
For example, used for timeout. _PyTime_ROUND_CEILING rounds
-1e-9 to 0 milliseconds which causes bpo-31786 issue.
_PyTime_ROUND_UP rounds -1e-9 to -1 millisecond which keeps
the timeout sign as expected. select.poll(timeout) must block
for negative values." */
_PyTime_ROUND_UP=3,
/* _PyTime_ROUND_TIMEOUT (an alias for _PyTime_ROUND_UP) should be
used for timeouts. */
_PyTime_ROUND_TIMEOUT = _PyTime_ROUND_UP
} _PyTime_round_t;
/* Convert a time_t to a PyLong. */
PyAPI_FUNC(PyObject *) _PyLong_FromTime_t(
time_t sec);
/* Convert a PyLong to a time_t. */
PyAPI_FUNC(time_t) _PyLong_AsTime_t(
PyObject *obj);
/* Convert a number of seconds, int or float, to time_t. */
PyAPI_FUNC(int) _PyTime_ObjectToTime_t(
PyObject *obj,
time_t *sec,
_PyTime_round_t);
/* Convert a number of seconds, int or float, to a timeval structure.
usec is in the range [0; 999999] and rounded towards zero.
For example, -1.2 is converted to (-2, 800000). */
PyAPI_FUNC(int) _PyTime_ObjectToTimeval(
PyObject *obj,
time_t *sec,
long *usec,
_PyTime_round_t);
/* Convert a number of seconds, int or float, to a timespec structure.
nsec is in the range [0; 999999999] and rounded towards zero.
For example, -1.2 is converted to (-2, 800000000). */
PyAPI_FUNC(int) _PyTime_ObjectToTimespec(
PyObject *obj,
time_t *sec,
long *nsec,
_PyTime_round_t);
/* Create a timestamp from a number of seconds. */
PyAPI_FUNC(_PyTime_t) _PyTime_FromSeconds(int seconds);
/* Macro to create a timestamp from a number of seconds, no integer overflow.
Only use the macro for small values, prefer _PyTime_FromSeconds(). */
#define _PYTIME_FROMSECONDS(seconds) \
((_PyTime_t)(seconds) * (1000 * 1000 * 1000))
/* Create a timestamp from a number of nanoseconds. */
PyAPI_FUNC(_PyTime_t) _PyTime_FromNanoseconds(_PyTime_t ns);
/* Create a timestamp from nanoseconds (Python int). */
PyAPI_FUNC(int) _PyTime_FromNanosecondsObject(_PyTime_t *t,
PyObject *obj);
/* Convert a number of seconds (Python float or int) to a timetamp.
Raise an exception and return -1 on error, return 0 on success. */
PyAPI_FUNC(int) _PyTime_FromSecondsObject(_PyTime_t *t,
PyObject *obj,
_PyTime_round_t round);
/* Convert a number of milliseconds (Python float or int, 10^-3) to a timetamp.
Raise an exception and return -1 on error, return 0 on success. */
PyAPI_FUNC(int) _PyTime_FromMillisecondsObject(_PyTime_t *t,
PyObject *obj,
_PyTime_round_t round);
/* Convert a timestamp to a number of seconds as a C double. */
PyAPI_FUNC(double) _PyTime_AsSecondsDouble(_PyTime_t t);
/* Convert timestamp to a number of milliseconds (10^-3 seconds). */
PyAPI_FUNC(_PyTime_t) _PyTime_AsMilliseconds(_PyTime_t t,
_PyTime_round_t round);
/* Convert timestamp to a number of microseconds (10^-6 seconds). */
PyAPI_FUNC(_PyTime_t) _PyTime_AsMicroseconds(_PyTime_t t,
_PyTime_round_t round);
/* Convert timestamp to a number of nanoseconds (10^-9 seconds) as a Python int
object. */
PyAPI_FUNC(PyObject *) _PyTime_AsNanosecondsObject(_PyTime_t t);
/* Create a timestamp from a timeval structure.
Raise an exception and return -1 on overflow, return 0 on success. */
PyAPI_FUNC(int) _PyTime_FromTimeval(_PyTime_t *tp, struct timeval *tv);
/* Convert a timestamp to a timeval structure (microsecond resolution).
tv_usec is always positive.
Raise an exception and return -1 if the conversion overflowed,
return 0 on success. */
PyAPI_FUNC(int) _PyTime_AsTimeval(_PyTime_t t,
struct timeval *tv,
_PyTime_round_t round);
/* Similar to _PyTime_AsTimeval(), but don't raise an exception on error. */
PyAPI_FUNC(int) _PyTime_AsTimeval_noraise(_PyTime_t t,
struct timeval *tv,
_PyTime_round_t round);
/* Convert a timestamp to a number of seconds (secs) and microseconds (us).
us is always positive. This function is similar to _PyTime_AsTimeval()
except that secs is always a time_t type, whereas the timeval structure
uses a C long for tv_sec on Windows.
Raise an exception and return -1 if the conversion overflowed,
return 0 on success. */
PyAPI_FUNC(int) _PyTime_AsTimevalTime_t(
_PyTime_t t,
time_t *secs,
int *us,
_PyTime_round_t round);
#if defined(HAVE_CLOCK_GETTIME) || defined(HAVE_KQUEUE)
/* Create a timestamp from a timespec structure.
Raise an exception and return -1 on overflow, return 0 on success. */
PyAPI_FUNC(int) _PyTime_FromTimespec(_PyTime_t *tp, struct timespec *ts);
/* Convert a timestamp to a timespec structure (nanosecond resolution).
tv_nsec is always positive.
Raise an exception and return -1 on error, return 0 on success. */
PyAPI_FUNC(int) _PyTime_AsTimespec(_PyTime_t t, struct timespec *ts);
#endif
/* Compute ticks * mul / div.
The caller must ensure that ((div - 1) * mul) cannot overflow. */
PyAPI_FUNC(_PyTime_t) _PyTime_MulDiv(_PyTime_t ticks,
_PyTime_t mul,
_PyTime_t div);
/* Get the current time from the system clock.
The function cannot fail. _PyTime_Init() ensures that the system clock
works. */
PyAPI_FUNC(_PyTime_t) _PyTime_GetSystemClock(void);
/* Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
The clock is not affected by system clock updates. The reference point of
the returned value is undefined, so that only the difference between the
results of consecutive calls is valid.
The function cannot fail. _PyTime_Init() ensures that a monotonic clock
is available and works. */
PyAPI_FUNC(_PyTime_t) _PyTime_GetMonotonicClock(void);
/* Structure used by time.get_clock_info() */
typedef struct {
const char *implementation;
int monotonic;
int adjustable;
double resolution;
} _Py_clock_info_t;
/* Get the current time from the system clock.
* Fill clock information if info is not NULL.
* Raise an exception and return -1 on error, return 0 on success.
*/
PyAPI_FUNC(int) _PyTime_GetSystemClockWithInfo(
_PyTime_t *t,
_Py_clock_info_t *info);
/* Get the time of a monotonic clock, i.e. a clock that cannot go backwards.
The clock is not affected by system clock updates. The reference point of
the returned value is undefined, so that only the difference between the
results of consecutive calls is valid.
Fill info (if set) with information of the function used to get the time.
Return 0 on success, raise an exception and return -1 on error. */
PyAPI_FUNC(int) _PyTime_GetMonotonicClockWithInfo(
_PyTime_t *t,
_Py_clock_info_t *info);
/* Initialize time.
Return 0 on success, raise an exception and return -1 on error. */
PyAPI_FUNC(int) _PyTime_Init(void);
/* Converts a timestamp to the Gregorian time, using the local time zone.
Return 0 on success, raise an exception and return -1 on error. */
PyAPI_FUNC(int) _PyTime_localtime(time_t t, struct tm *tm);
/* Converts a timestamp to the Gregorian time, assuming UTC.
Return 0 on success, raise an exception and return -1 on error. */
PyAPI_FUNC(int) _PyTime_gmtime(time_t t, struct tm *tm);
/* Get the performance counter: clock with the highest available resolution to
measure a short duration.
The function cannot fail. _PyTime_Init() ensures that the system clock
works. */
PyAPI_FUNC(_PyTime_t) _PyTime_GetPerfCounter(void);
/* Get the performance counter: clock with the highest available resolution to
measure a short duration.
Fill info (if set) with information of the function used to get the time.
Return 0 on success, raise an exception and return -1 on error. */
PyAPI_FUNC(int) _PyTime_GetPerfCounterWithInfo(
_PyTime_t *t,
_Py_clock_info_t *info);
#ifdef __cplusplus
}
#endif
#endif /* Py_PYTIME_H */
#endif /* Py_LIMITED_API */