diff options
| -rw-r--r-- | buildstream/utils.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/buildstream/utils.py b/buildstream/utils.py index 844153706..a4e161ed4 100644 --- a/buildstream/utils.py +++ b/buildstream/utils.py @@ -23,6 +23,8 @@ Utilities import calendar import errno +import functools +import gc import hashlib import os import re @@ -1280,3 +1282,32 @@ def _search_upward_for_files(directory, filenames): # i.e. we've reached the root of the filesystem return None, None directory = parent_dir + + +# _with_gc_disabled() +# +# Decorate a function to disable the garbage collector across its execution. +# +# In general, disabling the garbage collector should be considered to be an +# extreme action. Only use this in carefully selected subsets of the code +# where we generally create a lot more objects than we throw away. For example +# in loading the stream. +# +# Args: +# func (callable): The callable to disable the GC for +# +# Returns: +# (callable): The decorated callable +# +def _with_gc_disabled(func): + @functools.wraps(func) + def _gc_disabled(*args, **kwargs): + try: + gc.disable() + return func(*args, **kwargs) + finally: + gc.enable() + # Clean up to ensure we don't grow any more, freeing up room to be + # used by other objects during the course of running BuildStream. + gc.collect() + return _gc_disabled |