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137 lines (94 loc) · 2.95 KB
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Copy pathruntime.py
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137 lines (94 loc) · 2.95 KB
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import time
import sys
import resource
import re
import os
import signal
from functools import wraps
class runtime_info:
OS_LINUX = (sys.platform.startswith('linux'))
OS_DARWIN = (sys.platform == 'darwin')
OS_WIN = (sys.platform == 'win32')
PYTHON_2 = (sys.version_info.major == 2)
PYTHON_3 = (sys.version_info.major == 3)
GEVENT = False
try:
import gevent
if hasattr(gevent, '_threading'):
runtime_info.GEVENT = True
except ImportError:
pass
VmRSSRe = re.compile('VmRSS:\s+(\d+)\s+kB')
VmSizeRe = re.compile('VmSize:\s+(\d+)\s+kB')
def min_version(major, minor = 0):
return (sys.version_info.major == major and sys.version_info.minor >= minor)
def read_cpu_time():
rusage = resource.getrusage(resource.RUSAGE_SELF)
return int((rusage.ru_utime + rusage.ru_stime) * 1e9) # nanoseconds
def read_max_rss():
rusage = resource.getrusage(resource.RUSAGE_SELF)
if runtime_info.OS_DARWIN:
return int(rusage.ru_maxrss / 1000) # KB
else:
return rusage.ru_maxrss # KB
def read_current_rss():
pid = os.getpid()
output = None
try:
f = open('/proc/{0}/status'.format(os.getpid()))
output = f.read()
f.close()
except Exception:
return None
m = VmRSSRe.search(output)
if m:
return int(float(m.group(1)))
return None
def read_vm_size():
pid = os.getpid()
output = None
try:
f = open('/proc/{0}/status'.format(os.getpid()))
output = f.read()
f.close()
except Exception:
return None
m = VmSizeRe.search(output)
if m:
return int(float(m.group(1)))
return None
def patch(obj, func_name, before_func, after_func):
if not hasattr(obj, func_name):
return
target_func = getattr(obj, func_name)
# already patched
if hasattr(target_func, '__stackimpact_orig__'):
return
@wraps(target_func)
def wrapper(*args, **kwds):
if before_func:
before_func(*args, **kwds)
ret = target_func(*args, **kwds)
if after_func:
after_func(ret)
return ret
wrapper.__orig__ = target_func
setattr(obj, func_name, wrapper)
def unpatch(obj, func_name):
if not hasattr(obj, func_name):
return
wrapper = getattr(obj, func_name)
if not hasattr(wrapper, '__stackimpact_orig__'):
return
setattr(obj, func_name, getattr(wrapper, '__stackimpact_orig__'))
def register_signal(signal_number, handler_func, ignore_default = True):
prev_handler = None
def _handler(signum, frame):
skip_prev = handler_func(signum, frame)
if not skip_prev:
if callable(prev_handler):
prev_handler(signum, frame)
elif prev_handler == signal.SIG_DFL and not ignore_default:
signal.signal(signum, signal.SIG_DFL)
os.kill(os.getpid(), signum)
prev_handler = signal.signal(signal_number, _handler)