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118 lines
2.8 KiB
118 lines
2.8 KiB
# distutils: language = c++
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# cython: language_level = 3
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from libcpp cimport bool
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from libcpp.string cimport string
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from common.params_pxd cimport Params as c_Params, ParamKeyType as c_ParamKeyType
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import os
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import threading
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from common.basedir import BASEDIR
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cdef class ParamKeyType:
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PERSISTENT = c_ParamKeyType.PERSISTENT
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CLEAR_ON_MANAGER_START = c_ParamKeyType.CLEAR_ON_MANAGER_START
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CLEAR_ON_PANDA_DISCONNECT = c_ParamKeyType.CLEAR_ON_PANDA_DISCONNECT
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CLEAR_ON_IGNITION_ON = c_ParamKeyType.CLEAR_ON_IGNITION_ON
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CLEAR_ON_IGNITION_OFF = c_ParamKeyType.CLEAR_ON_IGNITION_OFF
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ALL = c_ParamKeyType.ALL
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def ensure_bytes(v):
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if isinstance(v, str):
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return v.encode()
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else:
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return v
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class UnknownKeyName(Exception):
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pass
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cdef class Params:
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cdef c_Params* p
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def __cinit__(self, d=None, bool persistent_params=False):
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cdef string path
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if d is None:
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with nogil:
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self.p = new c_Params(persistent_params)
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else:
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path = <string>d.encode()
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with nogil:
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self.p = new c_Params(path)
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def __dealloc__(self):
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del self.p
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def clear_all(self, tx_type=None):
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if tx_type is None:
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tx_type = ParamKeyType.ALL
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self.p.clearAll(tx_type)
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def check_key(self, key):
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key = ensure_bytes(key)
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if not self.p.checkKey(key):
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raise UnknownKeyName(key)
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return key
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def get(self, key, bool block=False, encoding=None):
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cdef string k = self.check_key(key)
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cdef string val
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with nogil:
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val = self.p.get(k, block)
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if val == b"":
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if block:
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# If we got no value while running in blocked mode
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# it means we got an interrupt while waiting
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raise KeyboardInterrupt
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else:
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return None
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if encoding is not None:
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return val.decode(encoding)
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else:
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return val
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def get_bool(self, key):
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cdef string k = self.check_key(key)
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cdef bool r
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with nogil:
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r = self.p.getBool(k)
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return r
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def put(self, key, dat):
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"""
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Warning: This function blocks until the param is written to disk!
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In very rare cases this can take over a second, and your code will hang.
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Use the put_nonblocking helper function in time sensitive code, but
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in general try to avoid writing params as much as possible.
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"""
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cdef string k = self.check_key(key)
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cdef string dat_bytes = ensure_bytes(dat)
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with nogil:
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self.p.put(k, dat_bytes)
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def put_bool(self, key, bool val):
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cdef string k = self.check_key(key)
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with nogil:
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self.p.putBool(k, val)
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def delete(self, key):
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cdef string k = self.check_key(key)
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with nogil:
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self.p.remove(k)
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def put_nonblocking(key, val, d=None):
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def f(key, val):
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params = Params(d)
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cdef string k = ensure_bytes(key)
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params.put(k, val)
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t = threading.Thread(target=f, args=(key, val))
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t.start()
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return t
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