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#/*##########################################################################
#
# The PyMca X-Ray Fluorescence Toolkit
#
# Copyright (c) 2004-2018 European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# 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.
#
#############################################################################*/
__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import sys
import os
import ctypes
import traceback
import logging
_logger = logging.getLogger(__name__)
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__()
def getPhysicalMemory():
#print("MemoryLoad: %d%%" % (stat.dwMemoryLoad))
#print("Physical memory = %d" % stat.ullTotalPhys)
#print(stat.ullAvailPhys)
stat = MEMORYSTATUSEX()
ctypes.windll.kernel32.GlobalMemoryStatusEx(ctypes.byref(stat))
return stat.ullTotalPhys
def getAvailablePhysicalMemory():
stat = MEMORYSTATUSEX()
ctypes.windll.kernel32.GlobalMemoryStatusEx(ctypes.byref(stat))
value = stat.ullAvailPhys
return value
def getAvailablePhysicalMemoryOrNone():
try:
value = getAvailablePhysicalMemory()
if value < 0:
# Value makes no sense.
# return None as requested in case of failure
print("WARNING: Returned physical memory does not make sense %d" % \
value)
return None
else:
return value
except:
return None
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))
name = "hw.memsize"
if hasattr(name, "encode"):
# Passing a string was returning 0 memory size under Python 3.5
name = name.encode()
libc.sysctlbyname(name, ctypes.byref(memsize), ctypes.byref(length), None, 0)
return memsize.value
else:
def getPhysicalMemory():
return None
def getPhysicalMemoryOrNone():
try:
value = getPhysicalMemory()
if value <= 0:
# Value makes no sense.
# return None as requested in case of failure
_logger.warning("WARNING: Returned physical memory does not make sense %d",
value)
return None
else:
return value
except:
return None
if __name__ == "__main__":
print("Physical memory = %d" % getPhysicalMemory())
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