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# Copyright 2018 ARM Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from collections import namedtuple
from wa.framework.exception import ConfigError
from wa.framework.target.runtime_config import (SysfileValuesRuntimeConfig,
HotplugRuntimeConfig,
CpufreqRuntimeConfig,
CpuidleRuntimeConfig,
AndroidRuntimeConfig)
from wa.utils.types import obj_dict, caseless_string
class RuntimeParameterManager(object):
runtime_config_cls = [
# order matters
SysfileValuesRuntimeConfig,
HotplugRuntimeConfig,
CpufreqRuntimeConfig,
CpuidleRuntimeConfig,
AndroidRuntimeConfig,
]
def __init__(self, target):
self.target = target
self.runtime_configs = [cls(self.target) for cls in self.runtime_config_cls]
self.runtime_params = {}
runtime_parameter = namedtuple('RuntimeParameter', 'cfg_point, rt_config')
for cfg in self.runtime_configs:
for param in cfg.supported_parameters:
if param.name in self.runtime_params:
msg = 'Duplicate runtime parameter name "{}": in both {} and {}'
raise RuntimeError(msg.format(param.name,
self.runtime_params[param.name].rt_config.name,
cfg.name))
self.runtime_params[param.name] = runtime_parameter(param, cfg)
# Uses corresponding config point to merge parameters
def merge_runtime_parameters(self, parameters):
merged_params = obj_dict()
for source in parameters:
for name, value in parameters[source].items():
cp = self.get_cfg_point(name)
cp.set_value(merged_params, value)
return dict(merged_params)
# Validates runtime_parameters against each other
def validate_runtime_parameters(self, parameters):
self.clear_runtime_parameters()
self.set_runtime_parameters(parameters)
for cfg in self.runtime_configs:
cfg.validate_parameters()
# Writes the given parameters to the device.
def commit_runtime_parameters(self, parameters):
self.clear_runtime_parameters()
self.set_runtime_parameters(parameters)
for cfg in self.runtime_configs:
cfg.commit()
# Stores a set of parameters performing isolated validation when appropriate
def set_runtime_parameters(self, parameters):
for name, value in parameters.items():
cfg = self.get_config_for_name(name)
if cfg is None:
msg = 'Unsupported runtime parameter: "{}"'
raise ConfigError(msg.format(name))
cfg.set_runtime_parameter(name, value)
def clear_runtime_parameters(self):
for cfg in self.runtime_configs:
cfg.clear()
cfg.set_defaults()
def get_config_for_name(self, name):
name = caseless_string(name)
for k, v in self.runtime_params.items():
if name == k:
return v.rt_config
return None
def get_cfg_point(self, name):
name = caseless_string(name)
for k, v in self.runtime_params.items():
if name == k or name in v.cfg_point.aliases:
return v.cfg_point
raise ConfigError('Unknown runtime parameter: {}'.format(name))
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