Mercurial > hg > python-clock

annotate clock.pyx @ 0:1c0396a8fff4 default tip

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author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Fri, 03 Jul 2015 21:00:16 +0200
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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1 from libc.errno cimport *
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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2 from libc.stdio cimport snprintf
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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3
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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4 cdef extern from "time.h":
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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5 ctypedef long time_t
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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6 cdef struct _timespec "timespec":
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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7 time_t tv_sec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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8 long tv_nsec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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9 cdef enum:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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10 CLOCK_MONOTONIC
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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11 CLOCK_REALTIME
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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12 cdef enum:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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13 TIMER_ABSTIME
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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14 int clock_gettime(int id, _timespec *tp) nogil
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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15 int clock_nanosleep(int id, int flags,
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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16 _timespec *request,
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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17 _timespec *remain) nogil
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18
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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19
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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20 cdef class timespec:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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21 cdef _timespec t
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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22
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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23 def __init__(self, long sec=0, long nsec=0):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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24 self.t.tv_sec = sec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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25 self.t.tv_nsec = nsec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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26
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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27 property sec:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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28 def __get__(self):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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29 return self.t.tv_sec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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30 def __set__(self, long v):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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31 self.t.tv_sec = v
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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32
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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33 property nsec:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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34 def __get__(self):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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35 return self.t.tv_nsec
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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36 def __set__(self, long v):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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37 self.t.tv_nsec = v
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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38 while self.t.tv_nsec >= 1000000000:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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39 self.t.tv_sec += 1
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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40 self.t.tv_nsec -= 1000000000
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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41
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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42 def __add__(self, long v):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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43 self.sec += v
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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44 return self
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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45
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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46 def __float__(self):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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47 return self.t.tv_sec + self.t.tv_nsec * 1e-9
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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48
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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49 def __repr__(self):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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50 cdef char[64] s
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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51 snprintf(s, 64, "{ sec=%ld nsec=%ld }", self.t.tv_sec, self.t.tv_nsec)
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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52 return s
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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53
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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54
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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55 def gettime(clockid=CLOCK_REALTIME):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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56 t = timespec()
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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57 clock_gettime(clockid, &t.t)
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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58 return t
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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59
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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60
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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61 def nanosleep(timespec request, int clockid=CLOCK_REALTIME, bint absolute=False):
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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62 cdef _timespec remain
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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63 cdef int flags = 0
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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64 cdef int r
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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65 cdef _timespec *t = &request.t
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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66
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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67 if absolute:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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68 flags = flags | TIMER_ABSTIME
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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69
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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70 with nogil:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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71 while 1:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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72 r = clock_nanosleep(clockid, flags, t, &remain)
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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73 if r == EINTR:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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74 if not absolute:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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75 t = &remain
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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76 continue
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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77 break
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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78
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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79 if r != 0:
Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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80 raise ValueError