SickGear/lib/hachoir_core/memory.py
echel0n 0d9fbc1ad7 Welcome to our SickBeard-TVRage Edition ...
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer.

Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer.

Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk!

Enjoy!
2014-03-09 22:39:12 -07:00

99 lines
2.4 KiB
Python

import gc
#---- Default implementation when resource is missing ----------------------
PAGE_SIZE = 4096
def getMemoryLimit():
"""
Get current memory limit in bytes.
Return None on error.
"""
return None
def setMemoryLimit(max_mem):
"""
Set memory limit in bytes.
Use value 'None' to disable memory limit.
Return True if limit is set, False on error.
"""
return False
def getMemorySize():
"""
Read currenet process memory size: size of available virtual memory.
This value is NOT the real memory usage.
This function only works on Linux (use /proc/self/statm file).
"""
try:
statm = open('/proc/self/statm').readline().split()
except IOError:
return None
return int(statm[0]) * PAGE_SIZE
def clearCaches():
"""
Try to clear all caches: call gc.collect() (Python garbage collector).
"""
gc.collect()
#import re; re.purge()
try:
#---- 'resource' implementation ---------------------------------------------
from resource import getpagesize, getrlimit, setrlimit, RLIMIT_AS
PAGE_SIZE = getpagesize()
def getMemoryLimit():
try:
limit = getrlimit(RLIMIT_AS)[0]
if 0 < limit:
limit *= PAGE_SIZE
return limit
except ValueError:
return None
def setMemoryLimit(max_mem):
if max_mem is None:
max_mem = -1
try:
setrlimit(RLIMIT_AS, (max_mem, -1))
return True
except ValueError:
return False
except ImportError:
pass
def limitedMemory(limit, func, *args, **kw):
"""
Limit memory grow when calling func(*args, **kw):
restrict memory grow to 'limit' bytes.
Use try/except MemoryError to catch the error.
"""
# First step: clear cache to gain memory
clearCaches()
# Get total program size
max_rss = getMemorySize()
if max_rss is not None:
# Get old limit and then set our new memory limit
old_limit = getMemoryLimit()
limit = max_rss + limit
limited = setMemoryLimit(limit)
else:
limited = False
try:
# Call function
return func(*args, **kw)
finally:
# and unset our memory limit
if limited:
setMemoryLimit(old_limit)
# After calling the function: clear all caches
clearCaches()