def virtual_memory():
total, free, buffers, shared, _, _ = cext.linux_sysinfo()
cached = active = inactive = None
f = open('/proc/meminfo', 'rb')
CACHED, ACTIVE, INACTIVE = b("Cached:"), b("Active:"), b("Inactive:")
try:
for line in f:
if line.startswith(CACHED):
cached = int(line.split()[1]) * 1024
elif line.startswith(ACTIVE):
active = int(line.split()[1]) * 1024
elif line.startswith(INACTIVE):
inactive = int(line.split()[1]) * 1024
if (cached is not None
and active is not None
and inactive is not None):
break
else:
# we might get here when dealing with exotic Linux flavors, see:
# http://code.google.com/p/psutil/issues/detail?id=313
msg = "'cached', 'active' and 'inactive' memory stats couldn't " \
"be determined and were set to 0"
warnings.warn(msg, RuntimeWarning)
cached = active = inactive = 0
finally:
f.close()
avail = free + buffers + cached
used = total - free
percent = usage_percent((total - avail), total, _round=1)
return svmem(total, avail, percent, used, free,
active, inactive, buffers, cached)
def threads(self):
thread_ids = os.listdir("/proc/%s/task" % self.pid)
thread_ids.sort()
retlist = []
hit_enoent = False
for thread_id in thread_ids:
try:
f = open("/proc/%s/task/%s/stat" % (self.pid, thread_id), 'rb')
except EnvironmentError:
err = sys.exc_info()[1]
if err.errno == errno.ENOENT:
# no such file or directory; it means thread
# disappeared on us
hit_enoent = True
continue
raise
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.find(b(')')) + 2:]
values = st.split(b(' '))
utime = float(values[11]) / CLOCK_TICKS
stime = float(values[12]) / CLOCK_TICKS
ntuple = _common.pthread(int(thread_id), utime, stime)
retlist.append(ntuple)
if hit_enoent:
# raise NSP if the process disappeared on us
os.stat('/proc/%s' % self.pid)
return retlist
def virtual_memory():
total, free, buffers, shared, _, _ = cext.linux_sysinfo()
cached = active = inactive = None
f = open('/proc/meminfo', 'rb')
CACHED, ACTIVE, INACTIVE = b("Cached:"), b("Active:"), b("Inactive:")
try:
for line in f:
if line.startswith(CACHED):
cached = int(line.split()[1]) * 1024
elif line.startswith(ACTIVE):
active = int(line.split()[1]) * 1024
elif line.startswith(INACTIVE):
inactive = int(line.split()[1]) * 1024
if (cached is not None and active is not None
and inactive is not None):
break
else:
# we might get here when dealing with exotic Linux flavors, see:
# https://github.com/giampaolo/psutil/issues/313
msg = "'cached', 'active' and 'inactive' memory stats couldn't " \
"be determined and were set to 0"
warnings.warn(msg, RuntimeWarning)
cached = active = inactive = 0
finally:
f.close()
avail = free + buffers + cached
used = total - free
percent = usage_percent((total - avail), total, _round=1)
return svmem(total, avail, percent, used, free, active, inactive, buffers,
cached)
def swap_memory():
_, _, _, _, total, free = cext.linux_sysinfo()
used = total - free
percent = usage_percent(used, total, _round=1)
# get pgin/pgouts
f = open("/proc/vmstat", "rb")
SIN, SOUT = b('pswpin'), b('pswpout')
sin = sout = None
try:
for line in f:
# values are expressed in 4 kilo bytes, we want bytes instead
if line.startswith(SIN):
sin = int(line.split(b(' '))[1]) * 4 * 1024
elif line.startswith(SOUT):
sout = int(line.split(b(' '))[1]) * 4 * 1024
if sin is not None and sout is not None:
break
else:
# we might get here when dealing with exotic Linux flavors, see:
# https://github.com/giampaolo/psutil/issues/313
msg = "'sin' and 'sout' swap memory stats couldn't " \
"be determined and were set to 0"
warnings.warn(msg, RuntimeWarning)
sin = sout = 0
finally:
f.close()
return _common.sswap(total, used, free, percent, sin, sout)
def threads(self):
thread_ids = os.listdir("/proc/%s/task" % self.pid)
thread_ids.sort()
retlist = []
hit_enoent = False
for thread_id in thread_ids:
try:
f = open("/proc/%s/task/%s/stat" % (self.pid, thread_id), 'rb')
except EnvironmentError:
err = sys.exc_info()[1]
if err.errno == errno.ENOENT:
# no such file or directory; it means thread
# disappeared on us
hit_enoent = True
continue
raise
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.find(b(')')) + 2:]
values = st.split(b(' '))
utime = float(values[11]) / CLOCK_TICKS
stime = float(values[12]) / CLOCK_TICKS
ntuple = _common.pthread(int(thread_id), utime, stime)
retlist.append(ntuple)
if hit_enoent:
# raise NSP if the process disappeared on us
os.stat('/proc/%s' % self.pid)
return retlist
def swap_memory():
_, _, _, _, total, free = cext.linux_sysinfo()
used = total - free
percent = usage_percent(used, total, _round=1)
# get pgin/pgouts
f = open("/proc/vmstat", "rb")
SIN, SOUT = b('pswpin'), b('pswpout')
sin = sout = None
try:
for line in f:
# values are expressed in 4 kilo bytes, we want bytes instead
if line.startswith(SIN):
sin = int(line.split(b(' '))[1]) * 4 * 1024
elif line.startswith(SOUT):
sout = int(line.split(b(' '))[1]) * 4 * 1024
if sin is not None and sout is not None:
break
else:
# we might get here when dealing with exotic Linux flavors, see:
# http://code.google.com/p/psutil/issues/detail?id=313
msg = "'sin' and 'sout' swap memory stats couldn't " \
"be determined and were set to 0"
warnings.warn(msg, RuntimeWarning)
sin = sout = 0
finally:
f.close()
return _common.sswap(total, used, free, percent, sin, sout)
def cpu_times(self):
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.find(b(')')) + 2:]
values = st.split(b(' '))
utime = float(values[11]) / CLOCK_TICKS
stime = float(values[12]) / CLOCK_TICKS
return _common.pcputimes(utime, stime)
def cpu_times(self):
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.find(b(')')) + 2:]
values = st.split(b(' '))
utime = float(values[11]) / CLOCK_TICKS
stime = float(values[12]) / CLOCK_TICKS
return _common.pcputimes(utime, stime)
def create_time(self):
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.rfind(b(')')) + 2:]
values = st.split(b(' '))
# According to documentation, starttime is in field 21 and the
# unit is jiffies (clock ticks).
# We first divide it for clock ticks and then add uptime returning
# seconds since the epoch, in UTC.
# Also use cached value if available.
bt = BOOT_TIME or boot_time()
return (float(values[19]) / CLOCK_TICKS) + bt
def create_time(self):
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
st = f.read().strip()
finally:
f.close()
# ignore the first two values ("pid (exe)")
st = st[st.rfind(b(')')) + 2:]
values = st.split(b(' '))
# According to documentation, starttime is in field 21 and the
# unit is jiffies (clock ticks).
# We first divide it for clock ticks and then add uptime returning
# seconds since the epoch, in UTC.
# Also use cached value if available.
bt = BOOT_TIME or boot_time()
return (float(values[19]) / CLOCK_TICKS) + bt
def num_threads(self):
f = open("/proc/%s/status" % self.pid, "rb")
try:
THREADS = b("Threads:")
for line in f:
if line.startswith(THREADS):
return int(line.split()[1])
raise NotImplementedError("line not found")
finally:
f.close()
def num_ctx_switches(self):
vol = unvol = None
f = open("/proc/%s/status" % self.pid, "rb")
VOLUNTARY = b("voluntary_ctxt_switches")
NON_VOLUNTARY = b("nonvoluntary_ctxt_switches")
try:
for line in f:
if line.startswith(VOLUNTARY):
vol = int(line.split()[1])
elif line.startswith(NON_VOLUNTARY):
unvol = int(line.split()[1])
if vol is not None and unvol is not None:
return _common.pctxsw(vol, unvol)
raise NotImplementedError(
"'voluntary_ctxt_switches' and 'nonvoluntary_ctxt_switches'"
"fields were not found in /proc/%s/status; the kernel is "
"probably older than 2.6.23" % self.pid)
finally:
f.close()
def num_threads(self):
f = open("/proc/%s/status" % self.pid, "rb")
try:
THREADS = b("Threads:")
for line in f:
if line.startswith(THREADS):
return int(line.split()[1])
raise NotImplementedError("line not found")
finally:
f.close()
def num_ctx_switches(self):
vol = unvol = None
f = open("/proc/%s/status" % self.pid, "rb")
VOLUNTARY = b("voluntary_ctxt_switches")
NON_VOLUNTARY = b("nonvoluntary_ctxt_switches")
try:
for line in f:
if line.startswith(VOLUNTARY):
vol = int(line.split()[1])
elif line.startswith(NON_VOLUNTARY):
unvol = int(line.split()[1])
if vol is not None and unvol is not None:
return _common.pctxsw(vol, unvol)
raise NotImplementedError(
"'voluntary_ctxt_switches' and 'nonvoluntary_ctxt_switches'"
"fields were not found in /proc/%s/status; the kernel is "
"probably older than 2.6.23" % self.pid)
finally:
f.close()
def ppid(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
PPID = b("PPid:")
for line in f:
if line.startswith(PPID):
# PPid: nnnn
return int(line.split()[1])
raise NotImplementedError("line not found")
finally:
f.close()
def gids(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
GID = b('Gid:')
for line in f:
if line.startswith(GID):
_, real, effective, saved, fs = line.split()
return _common.pgids(int(real), int(effective), int(saved))
raise NotImplementedError("line not found")
finally:
f.close()
def gids(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
GID = b('Gid:')
for line in f:
if line.startswith(GID):
_, real, effective, saved, fs = line.split()
return _common.pgids(int(real), int(effective), int(saved))
raise NotImplementedError("line not found")
finally:
f.close()
def ppid(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
PPID = b("PPid:")
for line in f:
if line.startswith(PPID):
# PPid: nnnn
return int(line.split()[1])
raise NotImplementedError("line not found")
finally:
f.close()
def terminal(self):
tmap = _psposix._get_terminal_map()
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
tty_nr = int(f.read().split(b(' '))[6])
finally:
f.close()
try:
return tmap[tty_nr]
except KeyError:
return None
def terminal(self):
tmap = _psposix._get_terminal_map()
f = open("/proc/%s/stat" % self.pid, 'rb')
try:
tty_nr = int(f.read().split(b(' '))[6])
finally:
f.close()
try:
return tmap[tty_nr]
except KeyError:
return None
def status(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
STATE = b("State:")
for line in f:
if line.startswith(STATE):
letter = line.split()[1]
if PY3:
letter = letter.decode()
# XXX is '?' legit? (we're not supposed to return
# it anyway)
return PROC_STATUSES.get(letter, '?')
finally:
f.close()
def boot_time():
"""Return the system boot time expressed in seconds since the epoch."""
global BOOT_TIME
f = open('/proc/stat', 'rb')
try:
BTIME = b('btime')
for line in f:
if line.startswith(BTIME):
ret = float(line.strip().split()[1])
BOOT_TIME = ret
return ret
raise RuntimeError("line 'btime' not found")
finally:
f.close()
def io_counters(self):
fname = "/proc/%s/io" % self.pid
f = open(fname, 'rb')
SYSCR, SYSCW = b("syscr"), b("syscw")
READ_BYTES, WRITE_BYTES = b("read_bytes"), b("write_bytes")
try:
rcount = wcount = rbytes = wbytes = None
for line in f:
if rcount is None and line.startswith(SYSCR):
rcount = int(line.split()[1])
elif wcount is None and line.startswith(SYSCW):
wcount = int(line.split()[1])
elif rbytes is None and line.startswith(READ_BYTES):
rbytes = int(line.split()[1])
elif wbytes is None and line.startswith(WRITE_BYTES):
wbytes = int(line.split()[1])
for x in (rcount, wcount, rbytes, wbytes):
if x is None:
raise NotImplementedError(
"couldn't read all necessary info from %r" % fname)
return _common.pio(rcount, wcount, rbytes, wbytes)
finally:
f.close()
def io_counters(self):
fname = "/proc/%s/io" % self.pid
f = open(fname, 'rb')
SYSCR, SYSCW = b("syscr"), b("syscw")
READ_BYTES, WRITE_BYTES = b("read_bytes"), b("write_bytes")
try:
rcount = wcount = rbytes = wbytes = None
for line in f:
if rcount is None and line.startswith(SYSCR):
rcount = int(line.split()[1])
elif wcount is None and line.startswith(SYSCW):
wcount = int(line.split()[1])
elif rbytes is None and line.startswith(READ_BYTES):
rbytes = int(line.split()[1])
elif wbytes is None and line.startswith(WRITE_BYTES):
wbytes = int(line.split()[1])
for x in (rcount, wcount, rbytes, wbytes):
if x is None:
raise NotImplementedError(
"couldn't read all necessary info from %r" % fname)
return _common.pio(rcount, wcount, rbytes, wbytes)
finally:
f.close()
def status(self):
f = open("/proc/%s/status" % self.pid, 'rb')
try:
STATE = b("State:")
for line in f:
if line.startswith(STATE):
letter = line.split()[1]
if PY3:
letter = letter.decode()
# XXX is '?' legit? (we're not supposed to return
# it anyway)
return PROC_STATUSES.get(letter, '?')
finally:
f.close()
def boot_time():
"""Return the system boot time expressed in seconds since the epoch."""
global BOOT_TIME
f = open('/proc/stat', 'rb')
try:
BTIME = b('btime')
for line in f:
if line.startswith(BTIME):
ret = float(line.strip().split()[1])
BOOT_TIME = ret
return ret
raise RuntimeError("line 'btime' not found")
finally:
f.close()
def cpu_count_physical():
"""Return the number of physical CPUs in the system."""
f = open('/proc/cpuinfo', 'rb')
try:
lines = f.readlines()
finally:
f.close()
found = set()
PHYSICAL_ID = b('physical id')
for line in lines:
if line.lower().startswith(PHYSICAL_ID):
found.add(line.strip())
if found:
return len(found)
else:
return None # mimic os.cpu_count()
def cpu_count_physical():
"""Return the number of physical CPUs in the system."""
f = open('/proc/cpuinfo', 'rb')
try:
lines = f.readlines()
finally:
f.close()
found = set()
PHYSICAL_ID = b('physical id')
for line in lines:
if line.lower().startswith(PHYSICAL_ID):
found.add(line.strip())
if found:
return len(found)
else:
return None # mimic os.cpu_count()
def per_cpu_times():
"""Return a list of namedtuple representing the CPU times
for every CPU available on the system.
"""
cpus = []
f = open('/proc/stat', 'rb')
try:
# get rid of the first line which refers to system wide CPU stats
f.readline()
CPU = b('cpu')
for line in f:
if line.startswith(CPU):
values = line.split()
fields = values[1:len(scputimes._fields) + 1]
fields = [float(x) / CLOCK_TICKS for x in fields]
entry = scputimes(*fields)
cpus.append(entry)
return cpus
finally:
f.close()
def per_cpu_times():
"""Return a list of namedtuple representing the CPU times
for every CPU available on the system.
"""
cpus = []
f = open('/proc/stat', 'rb')
try:
# get rid of the first line which refers to system wide CPU stats
f.readline()
CPU = b('cpu')
for line in f:
if line.startswith(CPU):
values = line.split()
fields = values[1:len(scputimes._fields) + 1]
fields = [float(x) / CLOCK_TICKS for x in fields]
entry = scputimes(*fields)
cpus.append(entry)
return cpus
finally:
f.close()
def disk_partitions(all=False):
"""Return mounted disk partitions as a list of nameduples"""
phydevs = []
f = open("/proc/filesystems", "rb")
try:
NODEV = b("nodev")
for line in f:
if not line.startswith(NODEV):
phydevs.append(line.strip())
finally:
f.close()
retlist = []
partitions = cext.disk_partitions()
for partition in partitions:
device, mountpoint, fstype, opts = partition
if device == 'none':
device = ''
if not all:
if device == '' or fstype not in phydevs:
continue
ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
retlist.append(ntuple)
return retlist
def cpu_count_logical():
"""Return the number of logical CPUs in the system."""
try:
return os.sysconf("SC_NPROCESSORS_ONLN")
except ValueError:
# as a second fallback we try to parse /proc/cpuinfo
num = 0
f = open('/proc/cpuinfo', 'rb')
try:
lines = f.readlines()
finally:
f.close()
PROCESSOR = b('processor')
for line in lines:
if line.lower().startswith(PROCESSOR):
num += 1
# unknown format (e.g. amrel/sparc architectures), see:
# http://code.google.com/p/psutil/issues/detail?id=200
# try to parse /proc/stat as a last resort
if num == 0:
f = open('/proc/stat', 'rt')
try:
lines = f.readlines()
finally:
f.close()
search = re.compile('cpu\d')
for line in lines:
line = line.split(' ')[0]
if search.match(line):
num += 1
if num == 0:
# mimic os.cpu_count()
return None
return num
def cpu_count_logical():
"""Return the number of logical CPUs in the system."""
try:
return os.sysconf("SC_NPROCESSORS_ONLN")
except ValueError:
# as a second fallback we try to parse /proc/cpuinfo
num = 0
f = open('/proc/cpuinfo', 'rb')
try:
lines = f.readlines()
finally:
f.close()
PROCESSOR = b('processor')
for line in lines:
if line.lower().startswith(PROCESSOR):
num += 1
# unknown format (e.g. amrel/sparc architectures), see:
# https://github.com/giampaolo/psutil/issues/200
# try to parse /proc/stat as a last resort
if num == 0:
f = open('/proc/stat', 'rt')
try:
lines = f.readlines()
finally:
f.close()
search = re.compile('cpu\d')
for line in lines:
line = line.split(' ')[0]
if search.match(line):
num += 1
if num == 0:
# mimic os.cpu_count()
return None
return num
def disk_partitions(all=False):
"""Return mounted disk partitions as a list of nameduples"""
phydevs = []
f = open("/proc/filesystems", "rb")
try:
NODEV = b("nodev")
for line in f:
if not line.startswith(NODEV):
phydevs.append(line.strip())
finally:
f.close()
retlist = []
partitions = cext.disk_partitions()
for partition in partitions:
device, mountpoint, fstype, opts = partition
if device == 'none':
device = ''
if not all:
if device == '' or fstype not in phydevs:
continue
ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
retlist.append(ntuple)
return retlist
def pids():
"""Returns a list of PIDs currently running on the system."""
return [int(x) for x in os.listdir(b('/proc')) if x.isdigit()]
def pids():
"""Returns a list of PIDs currently running on the system."""
return [int(x) for x in os.listdir(b('/proc')) if x.isdigit()]