---

part1/runner.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+
+import datetime
+import os
+import shlex
+import subprocess
+
+GCOV_SRC_DIR = "/home/test/sqlite3-src/build"
+GCDA_FILES = [
+  "/home/test/sqlite3-src/build/sqlite3-shell.gcda",
+  "/home/test/sqlite3-src/build/sqlite3-sqlite3.gcda",
+  "/home/test/sqlite3-src/build/lemon.gcda",
+  "/home/test/sqlite3-src/build/mkkeywordhash.gcda",
+]
+
+_TIMEOUT = 5
+
+
+def _build_args(binary: str, flag: str) -> list[str]:
+  if not flag:
+    return [binary]
+  return [binary] + shlex.split(flag)
+
+
+def run_sql(binary: str, sql: str, flag: str):
+  result = subprocess.run(
+    _build_args(binary, flag),
+    input=sql,
+    capture_output=True,
+    text=True,
+    encoding='latin-1',
+    errors='replace',
+    timeout=_TIMEOUT,
+  )
+  return result.stdout.strip(), result.stderr.strip(), result.returncode
+
+
+def run_sql_parallel(binary_a: str, binary_b: str, sql: str, flag: str):
+  args_a = _build_args(binary_a, flag)
+  args_b = _build_args(binary_b, flag)
+
+  pa = subprocess.Popen(
+    args_a,
+    stdin=subprocess.PIPE,
+    stdout=subprocess.PIPE,
+    stderr=subprocess.PIPE,
+    text=True,
+    encoding='latin-1',
+    errors='replace',
+  )
+  pb = subprocess.Popen(
+    args_b,
+    stdin=subprocess.PIPE,
+    stdout=subprocess.PIPE,
+    stderr=subprocess.PIPE,
+    text=True,
+    encoding='latin-1',
+    errors='replace',
+  )
+
+  try:
+    a_out, a_err = pa.communicate(input=sql, timeout=_TIMEOUT)
+  except subprocess.TimeoutExpired:
+    pa.kill()
+    pa.wait()
+    pb.kill()
+    pb.wait()
+    raise
+  except Exception:
+    pa.kill()
+    pa.wait()
+    pb.kill()
+    pb.wait()
+    raise
+
+  try:
+    b_out, b_err = pb.communicate(input=sql, timeout=_TIMEOUT)
+  except subprocess.TimeoutExpired:
+    pb.kill()
+    pb.wait()
+    raise
+
+  return (a_out.strip(), a_err.strip(), pa.returncode, b_out.strip(),
+          b_err.strip(), pb.returncode)
+
+
+def reset_coverage():
+  for gcda in GCDA_FILES:
+    if os.path.exists(gcda):
+      os.remove(gcda)
+
+  print(f'{datetime.datetime.now()}: [INFO] All existing .gcda files have been deleted.')
+
+
+def collect_coverage(output_path: str):
+  result = subprocess.run([
+    "gcovr",
+    "--root",
+    GCOV_SRC_DIR,
+    "--json-pretty",
+    "--output",
+    output_path,
+    "--gcov-ignore-errors=source_not_found",
+    "--gcov-ignore-parse-errors",
+  ],
+                          capture_output=True,
+                          text=True,
+                          cwd=GCOV_SRC_DIR)
+
+  if result.returncode != 0:
+    print(f'{datetime.datetime.now()}: [ERROR] gcovr failed_\n{result.stderr}')