diff options
Diffstat (limited to 'sphinx/cmdline.py')
| -rw-r--r-- | sphinx/cmdline.py | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/sphinx/cmdline.py b/sphinx/cmdline.py index 11f1861d8..590aa8b0a 100644 --- a/sphinx/cmdline.py +++ b/sphinx/cmdline.py @@ -11,6 +11,7 @@ from __future__ import print_function import argparse +import multiprocessing import sys import traceback from os import path @@ -83,6 +84,19 @@ def handle_exception(app, args, exception, stderr=sys.stderr): file=stderr) +def jobs_argument(value): + # type (int, str) -> int + """ + Special type to handle 'auto' flags passed to 'sphinx-build' via -j flag. Can + be expanded to handle other special scaling requests, such as setting job count + to (cpu_count / 2) + """ + if value == 'auto': + return multiprocessing.cpu_count() + else: + return value + + def get_parser(): # type: () -> argparse.ArgumentParser parser = argparse.ArgumentParser( @@ -129,10 +143,9 @@ files can be built by specifying individual filenames. group.add_argument('-d', metavar='PATH', dest='doctreedir', help='path for the cached environment and doctree ' 'files (default: OUTPUTDIR/.doctrees)') - group.add_argument('-j', metavar='N', default=1, type=int, dest='jobs', + group.add_argument('-j', metavar='N', default=1, type=jobs_argument, dest='jobs', help='build in parallel with N processes where ' - 'possible') - + 'possible (special value "auto" will set N to number of CPUs') group = parser.add_argument_group('build configuration options') group.add_argument('-c', metavar='PATH', dest='confdir', help='path where configuration file (conf.py) is ' |