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authorSebastian Thiel <byronimo@gmail.com>2010-06-06 18:13:21 +0200
committerSebastian Thiel <byronimo@gmail.com>2010-06-06 18:13:21 +0200
commitb3cde0ee162b8f0cb67da981311c8f9c16050a62 (patch)
tree537615b8d7cfd059b2d7938a1929d9e3199fb374 /lib/git/async/util.py
parentec28ad575ce1d7bb6a616ffc404f32bbb1af67b2 (diff)
downloadgitpython-b3cde0ee162b8f0cb67da981311c8f9c16050a62.tar.gz
First step of testing the pool - tasks have been separated into a new module including own tests, their design improved to prepare them for some specifics that would be needed for multiprocessing support
Diffstat (limited to 'lib/git/async/util.py')
-rw-r--r--lib/git/async/util.py24
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/git/async/util.py b/lib/git/async/util.py
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+++ b/lib/git/async/util.py
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+"""Module with utilities related to async operations"""
+
+import sys
+import os
+
+def cpu_count():
+ """:return:number of CPUs in the system
+ :note: inspired by multiprocessing"""
+ num = 0
+ try:
+ if sys.platform == 'win32':
+ num = int(os.environ['NUMBER_OF_PROCESSORS'])
+ elif 'bsd' in sys.platform or sys.platform == 'darwin':
+ num = int(os.popen('sysctl -n hw.ncpu').read())
+ else:
+ num = os.sysconf('SC_NPROCESSORS_ONLN')
+ except (ValueError, KeyError, OSError, AttributeError):
+ pass
+ # END exception handling
+
+ if num == 0:
+ raise NotImplementedError('cannot determine number of cpus')
+
+ return num