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import pstats
import sys
from pathlib import Path
from subprocess import run, PIPE, DEVNULL
from pyinstrument import Profiler as PyProfiler
from cProfile import Profile as cProfiler
class Profiler:
def __init__(self, prof_type, output_directory, benchmark_name):
self._prof = PyProfiler() if prof_type == "py" else cProfiler()
self._prof_type = prof_type
self._root_frame = None
self._state = None
self._output_directory = output_directory
self._benchmark_name = benchmark_name
def __enter__(self):
self._prof.__enter__()
self._state = "in"
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self._prof.__exit__(exc_type, exc_val, exc_tb)
if self._prof_type == "py":
self._root_frame = self._prof.last_session.root_frame()
self._state = "out"
self.output()
self.save()
def save(self):
if self._state != "out":
raise ValueError
if self._output_directory is None or self._benchmark_name is None:
return
git_commit = (
run(
["git", "rev-parse", "--short", "HEAD"],
stdout=PIPE,
stderr=DEVNULL,
check=False,
)
.stdout.strip()
.decode()
)
git_dirty = (
run(
["git", "diff", "--quiet"], stdout=DEVNULL, stderr=DEVNULL, check=False
).returncode
!= 0
)
version = git_commit + ("-dirty" if git_dirty else "")
output_path = Path(self._output_directory) / (self._benchmark_name + ".csv")
with output_path.open("a") as f:
f.write(
f"{version},{'.'.join(map(str, sys.version_info[:3]))},{self.get_time()}\n"
)
def output(self):
if self._state != "out":
raise ValueError
if self._prof_type == "py":
print(self._prof.output_text(unicode=True, color=True))
else:
self._prof.print_stats("cumtime")
def get_time(self) -> float:
if self._state != "out":
raise ValueError
if self._prof_type == "py":
return self._root_frame.time # type: ignore
else:
return pstats.Stats(self._prof).total_tt # type: ignore
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