Don't leak the file descriptors of companion ptys (#93)

Author: caizixian

docs/src/changelog.md

@@ -12,6 +12,11 @@
 
 ### Security
 
+## [`v0.3.4` (2022-10-13)](https://github.com/anupli/running-ng/releases/tag/v0.3.4)
+### Fixed
+#### Commands
+- `runbms`: fix the file descriptor leak when running benchmarks with companion programs.
+
 ## [`v0.3.3` (2022-10-12)](https://github.com/anupli/running-ng/releases/tag/v0.3.3)
 ### Changed
 #### Commands

src/running/__version__.py

@@ -1,2 +1,2 @@
-VERSION = (0, 3, 3)
+VERSION = (0, 3, 4)
 __VERSION__ = '.'.join(map(str, VERSION))

src/running/benchmark.py

@@ -137,6 +137,7 @@ def run(self, runtime: Runtime, cwd: Path = None) -> Tuple[bytes, bytes, Subproc
                     if exitcode != 0:
                         raise subprocess.SubprocessError(
                             "Exit code {} for the companion process".format(exitcode))
+                    os.close(fd)
             return stdout, companion_out, subprocess_exit