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#!/usr/bin/env python3
"""
Generate a driver/library benchmark based on DFA/PTA traces.
Usage:
PYTHONPATH=lib bin/generate-dfa-benchmark.py [options] <pta/dfa definition> [output.cc]
generate-dfa-benchmarks reads in a DFA definition and generates runs
(i.e., all words accepted by the DFA up to a configurable length). Each symbol
corresponds to a function call. If arguments are specified in the DFA
definition, each symbol corresponds to a function call with a specific set of
arguments (so all argument combinations are present in the generated runs).
Options:
--depth=<depth> (default: 3)
Maximum number of function calls per run
--instance=<name>
Override the name of the class instance used for benchmarking
--sleep=<ms> (default: 0)
How long to sleep between function calls.
"""
import getopt
import json
import re
import sys
import io
import yaml
from automata import PTA
from harness import OnboardTimerHarness
opt = {}
if __name__ == '__main__':
try:
optspec = (
'depth= '
'instance= '
'sleep= '
)
raw_opts, args = getopt.getopt(sys.argv[1:], "", optspec.split(' '))
for option, parameter in raw_opts:
optname = re.sub(r'^--', '', option)
opt[optname] = parameter
if 'depth' in opt:
opt['depth'] = int(opt['depth'])
else:
opt['depth'] = 3
if 'sleep' in opt:
opt['sleep'] = int(opt['sleep'])
except getopt.GetoptError as err:
print(err)
sys.exit(2)
modelfile = args[0]
with open(modelfile, 'r') as f:
if '.json' in modelfile:
pta = PTA.from_json(json.load(f))
else:
pta = PTA.from_yaml(yaml.safe_load(f))
harness = OnboardTimerHarness('GPIO::p1_0')
outbuf = io.StringIO()
outbuf.write('#include "arch.h"\n')
if 'includes' in pta.codegen:
for include in pta.codegen['includes']:
outbuf.write('#include "{}"\n'.format(include))
outbuf.write(harness.global_code())
outbuf.write('void loop(void)\n')
outbuf.write('{\n')
outbuf.write(harness.start_benchmark())
class_prefix = ''
if 'instance' in opt:
class_prefix = '{}.'.format(opt['instance'])
elif 'intance' in pta.codegen:
class_prefix = '{}.'.format(pta.codegen['instance'])
for run in pta.dfs(opt['depth'], with_arguments = True):
outbuf.write(harness.start_run())
for transition, arguments in run:
outbuf.write('// {} -> {}\n'.format(transition.origin.name, transition.destination.name))
if transition.is_interrupt:
outbuf.write('// wait for {} interrupt\n'.format(transition.name))
transition_code = '// TODO add startTransition / stopTransition calls to interrupt routine'
else:
transition_code = '{}{}({});'.format(class_prefix, transition.name, ', '.join(map(str, arguments)))
outbuf.write(harness.pass_transition(pta.get_transition_id(transition), transition_code))
if 'sleep' in opt:
outbuf.write('arch.delay_ms({:d});\n'.format(opt['sleep']))
outbuf.write(harness.stop_run())
outbuf.write('\n')
outbuf.write(harness.stop_benchmark())
outbuf.write('}\n')
outbuf.write('int main(void)\n')
outbuf.write('{\n')
for driver in ('arch', 'gpio', 'kout'):
outbuf.write('{}.setup();\n'.format(driver))
if 'setup' in pta.codegen:
for call in pta.codegen['setup']:
outbuf.write(call)
outbuf.write('arch.idle_loop();\n')
outbuf.write('return 0;\n')
outbuf.write('}\n')
if len(args) > 1:
with open(args[1], 'w') as f:
f.write(outbuf.getvalue())
else:
print(outbuf.getvalue())
sys.exit(0)
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