artiq/artiq/coredevice/cache.py

46 lines
1.5 KiB
Python

from artiq.language.core import *
from artiq.language.types import *
@syscall(flags={"nounwind", "nowrite"})
def cache_get(key: TStr) -> TList(TInt32):
raise NotImplementedError("syscall not simulated")
@syscall(flags={"nowrite"})
def cache_put(key: TStr, value: TList(TInt32)) -> TNone:
raise NotImplementedError("syscall not simulated")
class CoreCache:
"""Core device cache access"""
def __init__(self, dmgr, core_device="core"):
self.core = dmgr.get(core_device)
@kernel
def get(self, key):
"""Extract a value from the core device cache.
After a value is extracted, it cannot be replaced with another value using
:meth:`put` until all kernel functions finish executing; attempting
to replace it will result in a :class:`artiq.coredevice.exceptions.CacheError`.
If the cache does not contain any value associated with ``key``, an empty list
is returned.
The value is not copied, so mutating it will change what's stored in the cache.
:param str key: cache key
:return: a list of 32-bit integers
"""
return cache_get(key)
@kernel
def put(self, key, value):
"""Put a value into the core device cache. The value will persist until reboot.
To remove a value from the cache, call :meth:`put` with an empty list.
:param str key: cache key
:param list value: a list of 32-bit integers
"""
cache_put(key, value)