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Merged revisions 61846-61847 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk ........ r61846 | martin.v.loewis | 2008-03-24 13:57:53 +0100 (Mo, 24 Mär 2008) | 2 lines Install 2to3 script. ........ r61847 | martin.v.loewis | 2008-03-24 14:31:16 +0100 (Mo, 24 Mär 2008) | 2 lines Patch #2240: Implement signal.setitimer and signal.getitimer. ........
This commit is contained in:
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@ -39,12 +39,13 @@ rules for working with signals and their handlers:
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* Some care must be taken if both signals and threads are used in the same
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* Some care must be taken if both signals and threads are used in the same
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program. The fundamental thing to remember in using signals and threads
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program. The fundamental thing to remember in using signals and threads
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simultaneously is: always perform :func:`signal` operations in the main thread
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simultaneously is: always perform :func:`signal` operations in the main thread
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of execution. Any thread can perform an :func:`alarm`, :func:`getsignal`, or
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of execution. Any thread can perform an :func:`alarm`, :func:`getsignal`,
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:func:`pause`; only the main thread can set a new signal handler, and the main
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:func:`pause`, :func:`setitimer` or :func:`getitimer`; only the main thread
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thread will be the only one to receive signals (this is enforced by the Python
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can set a new signal handler, and the main thread will be the only one to
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:mod:`signal` module, even if the underlying thread implementation supports
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receive signals (this is enforced by the Python :mod:`signal` module, even
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sending signals to individual threads). This means that signals can't be used
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if the underlying thread implementation supports sending signals to
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as a means of inter-thread communication. Use locks instead.
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individual threads). This means that signals can't be used as a means of
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inter-thread communication. Use locks instead.
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The variables defined in the :mod:`signal` module are:
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The variables defined in the :mod:`signal` module are:
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@ -78,6 +79,36 @@ The variables defined in the :mod:`signal` module are:
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One more than the number of the highest signal number.
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One more than the number of the highest signal number.
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.. data:: ITIMER_REAL
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Decrements interval timer in real time, and delivers SIGALRM upon expiration.
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.. data:: ITIMER_VIRTUAL
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Decrements interval timer only when the process is executing, and delivers
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SIGVTALRM upon expiration.
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.. data:: ITIMER_PROF
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Decrements interval timer both when the process executes and when the
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system is executing on behalf of the process. Coupled with ITIMER_VIRTUAL,
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this timer is usually used to profile the time spent by the application
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in user and kernel space. SIGPROF is delivered upon expiration.
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The :mod:`signal` module defines one exception:
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.. exception:: ItimerError
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Raised to signal an error from the underlying :func:`setitimer` or
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:func:`getitimer` implementation. Expect this error if an invalid
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interval timer or a negative time is passed to :func:`setitimer`.
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This error is a subtype of :exc:`IOError`.
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The :mod:`signal` module defines the following functions:
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The :mod:`signal` module defines the following functions:
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@ -110,6 +141,29 @@ The :mod:`signal` module defines the following functions:
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:manpage:`signal(2)`.)
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:manpage:`signal(2)`.)
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.. function:: setitimer(which, seconds[, interval])
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Sets given itimer (one of :const:`signal.ITIMER_REAL`,
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:const:`signal.ITIMER_VIRTUAL` or :const:`signal.ITIMER_PROF`) especified
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by *which* to fire after *seconds* (float is accepted, different from
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:func:`alarm`) and after that every *interval* seconds. The interval
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timer specified by *which* can be cleared by setting seconds to zero.
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The old values are returned as a tuple: (delay, interval).
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Attempting to pass an invalid interval timer will cause a
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:exc:`ItimerError`.
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.. versionadded:: 2.6
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.. function:: getitimer(which)
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Returns current value of a given itimer especified by *which*.
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.. versionadded:: 2.6
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.. function:: set_wakeup_fd(fd)
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.. function:: set_wakeup_fd(fd)
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Set the wakeup fd to *fd*. When a signal is received, a ``'\0'`` byte is
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Set the wakeup fd to *fd*. When a signal is received, a ``'\0'`` byte is
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@ -124,7 +178,6 @@ The :mod:`signal` module defines the following functions:
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exception to be raised.
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exception to be raised.
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.. function:: siginterrupt(signalnum, flag)
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.. function:: siginterrupt(signalnum, flag)
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Change system call restart behaviour: if *flag* is :const:`False`, system calls
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Change system call restart behaviour: if *flag* is :const:`False`, system calls
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@ -258,9 +258,93 @@ def test_siginterrupt_off(self):
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i=self.readpipe_interrupted(lambda: signal.siginterrupt(self.signum, 0))
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i=self.readpipe_interrupted(lambda: signal.siginterrupt(self.signum, 0))
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self.assertEquals(i, False)
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self.assertEquals(i, False)
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class ItimerTest(unittest.TestCase):
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def setUp(self):
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self.hndl_called = False
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self.hndl_count = 0
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self.itimer = None
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def tearDown(self):
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if self.itimer is not None: # test_itimer_exc doesn't change this attr
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# just ensure that itimer is stopped
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signal.setitimer(self.itimer, 0)
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def sig_alrm(self, *args):
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self.hndl_called = True
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if test_support.verbose:
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print("SIGALRM handler invoked", args)
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def sig_vtalrm(self, *args):
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self.hndl_called = True
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if self.hndl_count > 3:
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# it shouldn't be here, because it should have been disabled.
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raise signal.ItimerError("setitimer didn't disable ITIMER_VIRTUAL "
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"timer.")
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elif self.hndl_count == 3:
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# disable ITIMER_VIRTUAL, this function shouldn't be called anymore
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signal.setitimer(signal.ITIMER_VIRTUAL, 0)
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if test_support.verbose:
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print("last SIGVTALRM handler call")
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self.hndl_count += 1
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if test_support.verbose:
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print("SIGVTALRM handler invoked", args)
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def sig_prof(self, *args):
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self.hndl_called = True
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signal.setitimer(signal.ITIMER_PROF, 0)
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if test_support.verbose:
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print("SIGPROF handler invoked", args)
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def test_itimer_exc(self):
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# XXX I'm assuming -1 is an invalid itimer, but maybe some platform
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# defines it ?
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self.assertRaises(signal.ItimerError, signal.setitimer, -1, 0)
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# negative time
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self.assertRaises(signal.ItimerError, signal.setitimer,
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signal.ITIMER_REAL, -1)
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def test_itimer_real(self):
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self.itimer = signal.ITIMER_REAL
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signal.signal(signal.SIGALRM, self.sig_alrm)
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signal.setitimer(self.itimer, 1.0)
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if test_support.verbose:
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print("\ncall pause()...")
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signal.pause()
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self.assertEqual(self.hndl_called, True)
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def test_itimer_virtual(self):
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self.itimer = signal.ITIMER_VIRTUAL
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signal.signal(signal.SIGVTALRM, self.sig_vtalrm)
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signal.setitimer(self.itimer, 0.3, 0.2)
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for i in range(100000000):
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if signal.getitimer(self.itimer) == (0.0, 0.0):
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break # sig_vtalrm handler stopped this itimer
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# virtual itimer should be (0.0, 0.0) now
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self.assertEquals(signal.getitimer(self.itimer), (0.0, 0.0))
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# and the handler should have been called
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self.assertEquals(self.hndl_called, True)
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def test_itimer_prof(self):
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self.itimer = signal.ITIMER_PROF
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signal.signal(signal.SIGPROF, self.sig_prof)
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signal.setitimer(self.itimer, 0.2)
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for i in range(100000000):
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if signal.getitimer(self.itimer) == (0.0, 0.0):
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break # sig_prof handler stopped this itimer
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self.assertEqual(self.hndl_called, True)
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def test_main():
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def test_main():
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test_support.run_unittest(BasicSignalTests, InterProcessSignalTests,
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test_support.run_unittest(BasicSignalTests, InterProcessSignalTests,
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WakeupSignalTests, SiginterruptTest)
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WakeupSignalTests, SiginterruptTest, ItimerTest)
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if __name__ == "__main__":
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if __name__ == "__main__":
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@ -531,6 +531,7 @@ Fran
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Zach Pincus
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Zach Pincus
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Michael Piotrowski
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Michael Piotrowski
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Antoine Pitrou
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Antoine Pitrou
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Guilherme Polo
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Michael Pomraning
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Michael Pomraning
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Iustin Pop
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Iustin Pop
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John Popplewell
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John Popplewell
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@ -13,6 +13,7 @@
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#include <signal.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#ifndef SIG_ERR
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#ifndef SIG_ERR
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#define SIG_ERR ((PyOS_sighandler_t)(-1))
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#define SIG_ERR ((PyOS_sighandler_t)(-1))
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@ -93,6 +94,49 @@ static PyObject *IntHandler;
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static PyOS_sighandler_t old_siginthandler = SIG_DFL;
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static PyOS_sighandler_t old_siginthandler = SIG_DFL;
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#ifdef HAVE_GETITIMER
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static PyObject *ItimerError;
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/* auxiliary functions for setitimer/getitimer */
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static void
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timeval_from_double(double d, struct timeval *tv)
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{
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tv->tv_sec = floor(d);
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tv->tv_usec = fmod(d, 1.0) * 1000000.0;
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}
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static inline double
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double_from_timeval(struct timeval *tv)
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{
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return tv->tv_sec + (double)(tv->tv_usec / 1000000.0);
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}
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static PyObject *
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itimer_retval(struct itimerval *iv)
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{
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PyObject *r, *v;
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r = PyTuple_New(2);
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if (r == NULL)
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return NULL;
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if(!(v = PyFloat_FromDouble(double_from_timeval(&iv->it_value)))) {
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Py_DECREF(r);
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return NULL;
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}
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PyTuple_SET_ITEM(r, 0, v);
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if(!(v = PyFloat_FromDouble(double_from_timeval(&iv->it_interval)))) {
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Py_DECREF(r);
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return NULL;
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}
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PyTuple_SET_ITEM(r, 1, v);
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return r;
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}
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#endif
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static PyObject *
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static PyObject *
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signal_default_int_handler(PyObject *self, PyObject *args)
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signal_default_int_handler(PyObject *self, PyObject *args)
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@ -347,10 +391,76 @@ PySignal_SetWakeupFd(int fd)
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}
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}
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#ifdef HAVE_SETITIMER
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static PyObject *
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signal_setitimer(PyObject *self, PyObject *args)
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{
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double first;
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double interval = 0;
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int which;
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struct itimerval new, old;
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if(!PyArg_ParseTuple(args, "id|d:setitimer", &which, &first, &interval))
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return NULL;
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timeval_from_double(first, &new.it_value);
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timeval_from_double(interval, &new.it_interval);
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/* Let OS check "which" value */
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if (setitimer(which, &new, &old) != 0) {
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PyErr_SetFromErrno(ItimerError);
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return NULL;
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}
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return itimer_retval(&old);
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}
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PyDoc_STRVAR(setitimer_doc,
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"setitimer(which, seconds[, interval])\n\
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\n\
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Sets given itimer (one of ITIMER_REAL, ITIMER_VIRTUAL\n\
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or ITIMER_PROF) to fire after value seconds and after\n\
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that every interval seconds.\n\
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The itimer can be cleared by setting seconds to zero.\n\
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\n\
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Returns old values as a tuple: (delay, interval).");
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#endif
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#ifdef HAVE_GETITIMER
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static PyObject *
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signal_getitimer(PyObject *self, PyObject *args)
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{
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int which;
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struct itimerval old;
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if (!PyArg_ParseTuple(args, "i:getitimer", &which))
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return NULL;
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if (getitimer(which, &old) != 0) {
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PyErr_SetFromErrno(ItimerError);
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return NULL;
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}
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return itimer_retval(&old);
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}
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PyDoc_STRVAR(getitimer_doc,
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"getitimer(which)\n\
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\n\
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Returns current value of given itimer.");
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#endif
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/* List of functions defined in the module */
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/* List of functions defined in the module */
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static PyMethodDef signal_methods[] = {
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static PyMethodDef signal_methods[] = {
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#ifdef HAVE_ALARM
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#ifdef HAVE_ALARM
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{"alarm", signal_alarm, METH_VARARGS, alarm_doc},
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{"alarm", signal_alarm, METH_VARARGS, alarm_doc},
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#endif
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#ifdef HAVE_SETITIMER
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{"setitimer", signal_setitimer, METH_VARARGS, setitimer_doc},
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#endif
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#ifdef HAVE_GETITIMER
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{"getitimer", signal_getitimer, METH_VARARGS, getitimer_doc},
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#endif
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#endif
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{"signal", signal_signal, METH_VARARGS, signal_doc},
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{"signal", signal_signal, METH_VARARGS, signal_doc},
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{"getsignal", signal_getsignal, METH_VARARGS, getsignal_doc},
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{"getsignal", signal_getsignal, METH_VARARGS, getsignal_doc},
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@ -374,19 +484,32 @@ PyDoc_STRVAR(module_doc,
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Functions:\n\
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Functions:\n\
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\n\
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\n\
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alarm() -- cause SIGALRM after a specified time [Unix only]\n\
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alarm() -- cause SIGALRM after a specified time [Unix only]\n\
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setitimer() -- cause a signal (described below) after a specified\n\
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float time and the timer may restart then [Unix only]\n\
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getitimer() -- get current value of timer [Unix only]\n\
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signal() -- set the action for a given signal\n\
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signal() -- set the action for a given signal\n\
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getsignal() -- get the signal action for a given signal\n\
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getsignal() -- get the signal action for a given signal\n\
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pause() -- wait until a signal arrives [Unix only]\n\
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pause() -- wait until a signal arrives [Unix only]\n\
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default_int_handler() -- default SIGINT handler\n\
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default_int_handler() -- default SIGINT handler\n\
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\n\
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\n\
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Constants:\n\
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signal constants:\n\
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\n\
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SIG_DFL -- used to refer to the system default handler\n\
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SIG_DFL -- used to refer to the system default handler\n\
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SIG_IGN -- used to ignore the signal\n\
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SIG_IGN -- used to ignore the signal\n\
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NSIG -- number of defined signals\n\
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NSIG -- number of defined signals\n\
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\n\
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SIGINT, SIGTERM, etc. -- signal numbers\n\
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SIGINT, SIGTERM, etc. -- signal numbers\n\
|
||||||
\n\
|
\n\
|
||||||
|
itimer constants:\n\
|
||||||
|
ITIMER_REAL -- decrements in real time, and delivers SIGALRM upon\n\
|
||||||
|
expiration\n\
|
||||||
|
ITIMER_VIRTUAL -- decrements only when the process is executing,\n\
|
||||||
|
and delivers SIGVTALRM upon expiration\n\
|
||||||
|
ITIMER_PROF -- decrements both when the process is executing and\n\
|
||||||
|
when the system is executing on behalf of the process.\n\
|
||||||
|
Coupled with ITIMER_VIRTUAL, this timer is usually\n\
|
||||||
|
used to profile the time spent by the application\n\
|
||||||
|
in user and kernel space. SIGPROF is delivered upon\n\
|
||||||
|
expiration.\n\
|
||||||
|
\n\n\
|
||||||
*** IMPORTANT NOTICE ***\n\
|
*** IMPORTANT NOTICE ***\n\
|
||||||
A signal handler function is called with two arguments:\n\
|
A signal handler function is called with two arguments:\n\
|
||||||
the first is the signal number, the second is the interrupted stack frame.");
|
the first is the signal number, the second is the interrupted stack frame.");
|
||||||
|
@ -639,6 +762,29 @@ initsignal(void)
|
||||||
PyDict_SetItemString(d, "SIGINFO", x);
|
PyDict_SetItemString(d, "SIGINFO", x);
|
||||||
Py_XDECREF(x);
|
Py_XDECREF(x);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
#ifdef ITIMER_REAL
|
||||||
|
x = PyLong_FromLong(ITIMER_REAL);
|
||||||
|
PyDict_SetItemString(d, "ITIMER_REAL", x);
|
||||||
|
Py_DECREF(x);
|
||||||
|
#endif
|
||||||
|
#ifdef ITIMER_VIRTUAL
|
||||||
|
x = PyLong_FromLong(ITIMER_VIRTUAL);
|
||||||
|
PyDict_SetItemString(d, "ITIMER_VIRTUAL", x);
|
||||||
|
Py_DECREF(x);
|
||||||
|
#endif
|
||||||
|
#ifdef ITIMER_PROF
|
||||||
|
x = PyLong_FromLong(ITIMER_PROF);
|
||||||
|
PyDict_SetItemString(d, "ITIMER_PROF", x);
|
||||||
|
Py_DECREF(x);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined (HAVE_SETITIMER) || defined (HAVE_GETITIMER)
|
||||||
|
ItimerError = PyErr_NewException("signal.ItimerError",
|
||||||
|
PyExc_IOError, NULL);
|
||||||
|
PyDict_SetItemString(d, "ItimerError", ItimerError);
|
||||||
|
#endif
|
||||||
|
|
||||||
if (!PyErr_Occurred())
|
if (!PyErr_Occurred())
|
||||||
return;
|
return;
|
||||||
|
|
||||||
|
|
5
Tools/scripts/2to3
Executable file
5
Tools/scripts/2to3
Executable file
|
@ -0,0 +1,5 @@
|
||||||
|
#!/usr/bin/env python
|
||||||
|
from lib2to3 import refactor
|
||||||
|
import sys
|
||||||
|
|
||||||
|
sys.exit(refactor.main())
|
8
configure
vendored
8
configure
vendored
|
@ -1,5 +1,5 @@
|
||||||
#! /bin/sh
|
#! /bin/sh
|
||||||
# From configure.in Revision: 61306 .
|
# From configure.in Revision: 61728 .
|
||||||
# Guess values for system-dependent variables and create Makefiles.
|
# Guess values for system-dependent variables and create Makefiles.
|
||||||
# Generated by GNU Autoconf 2.61 for python 3.0.
|
# Generated by GNU Autoconf 2.61 for python 3.0.
|
||||||
#
|
#
|
||||||
|
@ -15719,8 +15719,10 @@ echo "${ECHO_T}MACHDEP_OBJS" >&6; }
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
for ac_func in alarm bind_textdomain_codeset chown clock confstr \
|
|
||||||
ctermid execv fchmod fchown fork fpathconf ftime ftruncate \
|
|
||||||
|
for ac_func in alarm setitimer getitimer bind_textdomain_codeset chown \
|
||||||
|
clock confstr ctermid execv fchmod fchown fork fpathconf ftime ftruncate \
|
||||||
gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
|
gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
|
||||||
getpriority getpwent getspnam getspent getsid getwd \
|
getpriority getpwent getspnam getspent getsid getwd \
|
||||||
kill killpg lchmod lchown lstat mkfifo mknod mktime \
|
kill killpg lchmod lchown lstat mkfifo mknod mktime \
|
||||||
|
|
|
@ -2274,8 +2274,8 @@ fi
|
||||||
AC_MSG_RESULT(MACHDEP_OBJS)
|
AC_MSG_RESULT(MACHDEP_OBJS)
|
||||||
|
|
||||||
# checks for library functions
|
# checks for library functions
|
||||||
AC_CHECK_FUNCS(alarm bind_textdomain_codeset chown clock confstr \
|
AC_CHECK_FUNCS(alarm setitimer getitimer bind_textdomain_codeset chown \
|
||||||
ctermid execv fchmod fchown fork fpathconf ftime ftruncate \
|
clock confstr ctermid execv fchmod fchown fork fpathconf ftime ftruncate \
|
||||||
gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
|
gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
|
||||||
getpriority getpwent getspnam getspent getsid getwd \
|
getpriority getpwent getspnam getspent getsid getwd \
|
||||||
kill killpg lchmod lchown lstat mkfifo mknod mktime \
|
kill killpg lchmod lchown lstat mkfifo mknod mktime \
|
||||||
|
|
|
@ -240,6 +240,9 @@
|
||||||
/* Define this if you have the 6-arg version of gethostbyname_r(). */
|
/* Define this if you have the 6-arg version of gethostbyname_r(). */
|
||||||
#undef HAVE_GETHOSTBYNAME_R_6_ARG
|
#undef HAVE_GETHOSTBYNAME_R_6_ARG
|
||||||
|
|
||||||
|
/* Define to 1 if you have the `getitimer' function. */
|
||||||
|
#undef HAVE_GETITIMER
|
||||||
|
|
||||||
/* Define to 1 if you have the `getloadavg' function. */
|
/* Define to 1 if you have the `getloadavg' function. */
|
||||||
#undef HAVE_GETLOADAVG
|
#undef HAVE_GETLOADAVG
|
||||||
|
|
||||||
|
@ -501,6 +504,9 @@
|
||||||
/* Define if you have the 'setgroups' function. */
|
/* Define if you have the 'setgroups' function. */
|
||||||
#undef HAVE_SETGROUPS
|
#undef HAVE_SETGROUPS
|
||||||
|
|
||||||
|
/* Define to 1 if you have the `setitimer' function. */
|
||||||
|
#undef HAVE_SETITIMER
|
||||||
|
|
||||||
/* Define to 1 if you have the `setlocale' function. */
|
/* Define to 1 if you have the `setlocale' function. */
|
||||||
#undef HAVE_SETLOCALE
|
#undef HAVE_SETLOCALE
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue