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language/core: support cycles_to_time and time_to_cycles outside of kernel

This commit is contained in:
Sebastien Bourdeauducq 2014-10-12 22:59:19 +08:00
parent 77967f6ef1
commit 4361c7cb49
1 changed files with 18 additions and 6 deletions
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24
artiq/language/core.py
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@ -4,6 +4,8 @@ from collections import namedtuple as _namedtuple
from copy import copy as _copy from copy import copy as _copy
from functools import wraps as _wraps from functools import wraps as _wraps
from artiq.language import units as _units
class int64(int): class int64(int):
"""64-bit integers for static compilation. """64-bit integers for static compilation.
@ -232,8 +234,6 @@ class _DummyTimeManager:
take_time = _not_implemented take_time = _not_implemented
get_time = _not_implemented get_time = _not_implemented
set_time = _not_implemented set_time = _not_implemented
time_to_cycles = _not_implemented
cycles_to_time = _not_implemented
_time_manager = _DummyTimeManager() _time_manager = _DummyTimeManager()
@ -323,18 +323,30 @@ def at(time):
_time_manager.set_time(time) _time_manager.set_time(time)
def time_to_cycles(time): def time_to_cycles(time, core=None):
"""Converts time to the corresponding number of RTIO cycles. """Converts time to the corresponding number of RTIO cycles.
:param time: Time (in seconds) to convert.
:param core: Core device for which to perform the conversion. Specify only
when running in the interpreter (not in kernel).
""" """
return _time_manager.time_to_cycles(time) if core is None:
raise ValueError("Core device must be specified for time conversion")
return int64(time.amount//core.runtime_env.ref_period)
def cycles_to_time(cycles): def cycles_to_time(cycles, core=None):
"""Converts RTIO cycles to the corresponding time. """Converts RTIO cycles to the corresponding time.
:param time: Cycle count to convert.
:param core: Core device for which to perform the conversion. Specify only
when running in the interpreter (not in kernel).
""" """
return _time_manager.cycles_to_time(cycles) if core is None:
raise ValueError("Core device must be specified for time conversion")
return cycles*core.runtime_env.ref_period*_units.s
def syscall(*args): def syscall(*args):