本文整理汇总了Python中signal.SIGPROF属性的典型用法代码示例。如果您正苦于以下问题:Python signal.SIGPROF属性的具体用法?Python signal.SIGPROF怎么用?Python signal.SIGPROF使用的例子?那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类signal
的用法示例。
在下文中一共展示了signal.SIGPROF属性的6个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: run
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def run(self, profiler):
weak_profiler = weakref.proxy(profiler)
handle = functools.partial(self.handle_signal, weak_profiler)
t = self.interval
with deferral() as defer:
prev_handle = signal.signal(signal.SIGPROF, handle)
if prev_handle == signal.SIG_DFL:
# sometimes the process receives SIGPROF although the sampler
# unsets the itimer. If the previous handler was SIG_DFL, the
# process will crash when received SIGPROF. To prevent this
# risk, it makes the process to ignore SIGPROF when it isn't
# running if the previous handler was SIG_DFL.
prev_handle = signal.SIG_IGN
defer(signal.signal, signal.SIGPROF, prev_handle)
prev_itimer = signal.setitimer(signal.ITIMER_PROF, t, t)
defer(signal.setitimer, signal.ITIMER_PROF, *prev_itimer)
yield
示例2: test_itimer_prof
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def test_itimer_prof(self):
self.itimer = signal.ITIMER_PROF
signal.signal(signal.SIGPROF, self.sig_prof)
signal.setitimer(self.itimer, 0.2, 0.2)
start_time = time.monotonic()
while time.monotonic() - start_time < 60.0:
# do some work
_ = pow(12345, 67890, 10000019)
if signal.getitimer(self.itimer) == (0.0, 0.0):
break # sig_prof handler stopped this itimer
else: # Issue 8424
self.skipTest("timeout: likely cause: machine too slow or load too "
"high")
# profiling itimer should be (0.0, 0.0) now
self.assertEqual(signal.getitimer(self.itimer), (0.0, 0.0))
# and the handler should have been called
self.assertEqual(self.hndl_called, True)
示例3: __init__
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def __init__(self, global_config):
self.global_config = global_config
self.ccmap = []
self.el = Timeout(self.GClector, 60, -1)
Signal(SIGHUP, self.discAll, SIGHUP)
Signal(SIGUSR2, self.toggleDebug, SIGUSR2)
Signal(SIGPROF, self.safeRestart, SIGPROF)
Signal(SIGTERM, self.safeStop, SIGTERM)
#gc.disable()
#gc.set_debug(gc.DEBUG_STATS)
#gc.set_threshold(0)
#print gc.collect()
示例4: test_itimer_sampler
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def test_itimer_sampler():
assert signal.getsignal(signal.SIGPROF) == signal.SIG_DFL
try:
_test_sampling_profiler(ItimerSampler(0.0001))
# no crash caused by SIGPROF.
assert signal.getsignal(signal.SIGPROF) == signal.SIG_IGN
for x in range(10):
os.kill(os.getpid(), signal.SIGPROF)
# respect custom handler.
handler = lambda *x: x
signal.signal(signal.SIGPROF, handler)
_test_sampling_profiler(ItimerSampler(0.0001))
assert signal.getsignal(signal.SIGPROF) == handler
finally:
signal.signal(signal.SIGPROF, signal.SIG_DFL)
示例5: __init__
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def __init__(self, global_config):
self.global_config = global_config
self.ccmap = []
self.el = Timeout(self.GClector, 60, -1)
Signal(SIGHUP, self.discAll, SIGHUP)
Signal(SIGUSR2, self.toggleDebug, SIGUSR2)
Signal(SIGPROF, self.safeRestart, SIGPROF)
#gc.disable()
#gc.set_debug(gc.DEBUG_STATS)
#gc.set_threshold(0)
#print gc.collect()
示例6: test_stress_delivery_dependent
# 需要导入模块: import signal [as 别名]
# 或者: from signal import SIGPROF [as 别名]
def test_stress_delivery_dependent(self):
"""
This test uses dependent signal handlers.
"""
N = self.decide_itimer_count()
sigs = []
def first_handler(signum, frame):
# 1e-6 is the minimum non-zero value for `setitimer()`.
# Choose a random delay so as to improve chances of
# triggering a race condition. Ideally the signal is received
# when inside critical signal-handling routines such as
# Py_MakePendingCalls().
signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5)
def second_handler(signum=None, frame=None):
sigs.append(signum)
# Here on Linux, SIGPROF > SIGALRM > SIGUSR1. By using both
# ascending and descending sequences (SIGUSR1 then SIGALRM,
# SIGPROF then SIGALRM), we maximize chances of hitting a bug.
self.setsig(signal.SIGPROF, first_handler)
self.setsig(signal.SIGUSR1, first_handler)
self.setsig(signal.SIGALRM, second_handler) # for ITIMER_REAL
expected_sigs = 0
deadline = time.monotonic() + 15.0
while expected_sigs < N:
os.kill(os.getpid(), signal.SIGPROF)
expected_sigs += 1
# Wait for handlers to run to avoid signal coalescing
while len(sigs) < expected_sigs and time.monotonic() < deadline:
time.sleep(1e-5)
os.kill(os.getpid(), signal.SIGUSR1)
expected_sigs += 1
while len(sigs) < expected_sigs and time.monotonic() < deadline:
time.sleep(1e-5)
# All ITIMER_REAL signals should have been delivered to the
# Python handler
self.assertEqual(len(sigs), N, "Some signals were lost")