DerivedMeasurments processors now return DerviedMetrics rather than
measurments. The notion of an InstrumentChannel doesn't really make
sense in the context of DerivedMeasurments, which are not directly
measured on the target. Since Measurement's require a channel, a simpler
DerviedMetric is added that only requires a name and a type.
Adds `DerivedMeasurements` which are designed to perform post processing on
a provided MeasurementCsv.
Currently only a `DerivedEnergyMeasurements` class has been added which
has 2 purposes:
- Calculate energy from power results if not present using recorded timestamps,
falling back to a provided sample rate
- Calculate cumulative energy and average power from a specified MeasurementCSV
file.
This commit adds a gem5 simulation platform. The platform is responsible for starting the gem5 simulation.
Changes to be committed:
modified: devlib/__init__.py
modified: devlib/platform/__init__.py
new file: devlib/platform/gem5.py
This is the first in a series of commits to allow for the use of gem5 as a target in devlib.
The interaction with the gem5 simulation is done by the Gem5Connection, a type of TelnetConnection.
There are two types of Gem5Connections (Linux and Android) as they differ slightly in the implementation
of some methods. Other types of connections have only been changed to make them uniform (e.g. arguments for init method)
Changes to be committed:
modified: devlib/__init__.py
modified: devlib/host.py
modified: devlib/utils/android.py
modified: devlib/utils/ssh.py
Perviously, a parameter passed into SshConnection controlled whether the
connection was established over SSH or Telnet. Now, there is a separate
class for Telnet connections.
Now that connection classes can be passed as arguments on Target
instatiation, they are part of the user-facing API and are marked as
such by exporting them in the main __init__.py
