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Fix CPU detection on OS X

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This commit is contained in:
Kovid Goyal 2009-06-10 10:56:02 -07:00
parent 2953e8c95b
commit b89e0ce508
1 changed files with 10 additions and 1 deletions
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11
src/calibre/__init__.py
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@ -277,7 +277,16 @@ class StreamReadWrapper(object):
def detect_ncpus():
"""Detects the number of effective CPUs in the system"""
return multiprocessing.cpu_count()
ans = -1
try:
ans = multiprocessing.cpu_count()
except:
from PyQt4.Qt import QThread
ans = QThread.idealThreadCount()
if ans < 1:
ans = 1
return ans
def launch(path_or_url):
if os.path.exists(path_or_url):