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#
# Copyright (C) 2012 V. Armando Sole - ESRF
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
__license__ = "MIT"
import sys
import os
import ctypes
import traceback
def loadCLibrary(name="libc.so"):
try:
libc = ctypes.CDLL(name)
except OSError:
text = traceback.format_exc()
if "invalid ELF header" in text:
library = text.split(": ")
if len(library) > 1:
libraryFile = library[1]
if os.path.exists(libraryFile):
# to read some line
f = open(libraryFile, 'r')
for i in range(10):
line = f.readline()
if name in line:
f.close()
lineSplit = line.split(name)
libraryFile = lineSplit[0].split()[-1] +\
name+\
lineSplit[1].split()[0]
break
libraryFile = line[line.index(libraryFile):].split()[0]
libc = ctypes.CDLL(libraryFile)
else:
raise
return libc
if sys.platform == 'win32':
class MEMORYSTATUSEX(ctypes.Structure):
_fields_ = [
("dwLength", ctypes.c_ulong),
("dwMemoryLoad", ctypes.c_ulong),
("ullTotalPhys", ctypes.c_ulonglong),
("ullAvailPhys", ctypes.c_ulonglong),
("ullTotalPageFile", ctypes.c_ulonglong),
("ullAvailPageFile", ctypes.c_ulonglong),
("ullTotalVirtual", ctypes.c_ulonglong),
("ullAvailVirtual", ctypes.c_ulonglong),
("sullAvailExtendedVirtual", ctypes.c_ulonglong),
]
def __init__(self):
# have to initialize this to the size of MEMORYSTATUSEX
self.dwLength = ctypes.sizeof(self)
super(MEMORYSTATUSEX, self).__init__()
#print("MemoryLoad: %d%%" % (stat.dwMemoryLoad))
#print("Physical memory = %d" % stat.ullTotalPhys)
#print(stat.ullAvailPhys)
def getPhysicalMemory():
stat = MEMORYSTATUSEX()
ctypes.windll.kernel32.GlobalMemoryStatusEx(ctypes.byref(stat))
return stat.ullTotalPhys
elif sys.platform.startswith('linux'):
def getPhysicalMemory():
return os.sysconf('SC_PAGESIZE') * os.sysconf('SC_PHYS_PAGES')
elif sys.platform == 'darwin':
def getPhysicalMemory():
libc = loadCLibrary("libc.dylib")
memsize = ctypes.c_uint64(0)
length = ctypes.c_size_t(ctypes.sizeof(memsize))
libc.sysctlbyname("hw.memsize", ctypes.byref(memsize), ctypes.byref(length), None, 0)
return memsize.value
else:
def getPhysicalMemory():
return None
def getPhysicalMemoryOrNone():
try:
return getPhysicalMemory()
except:
return None
if __name__ == "__main__":
print("Physical memory = %d" % getPhysicalMemory())
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