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"""This module provides mechanisms to use signal handlers in Python.
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Functions:
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alarm() -- cause SIGALRM after a specified time [Unix only]
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setitimer() -- cause a signal (described below) after a specified
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float time and the timer may restart then [Unix only]
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getitimer() -- get current value of timer [Unix only]
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signal() -- set the action for a given signal
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getsignal() -- get the signal action for a given signal
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pause() -- wait until a signal arrives [Unix only]
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default_int_handler() -- default SIGINT handler
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signal constants:
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SIG_DFL -- used to refer to the system default handler
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SIG_IGN -- used to ignore the signal
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NSIG -- number of defined signals
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SIGINT, SIGTERM, etc. -- signal numbers
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itimer constants:
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ITIMER_REAL -- decrements in real time, and delivers SIGALRM upon
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expiration
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ITIMER_VIRTUAL -- decrements only when the process is executing,
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and delivers SIGVTALRM upon expiration
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ITIMER_PROF -- decrements both when the process is executing and
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when the system is executing on behalf of the process.
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Coupled with ITIMER_VIRTUAL, this timer is usually
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used to profile the time spent by the application
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in user and kernel space. SIGPROF is delivered upon
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expiration.
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*** IMPORTANT NOTICE ***
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A signal handler function is called with two arguments:
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the first is the signal number, the second is the interrupted stack frame."""
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CTRL_BREAK_EVENT=1
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CTRL_C_EVENT=0
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NSIG=23
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SIGABRT=22
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SIGBREAK=21
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SIGFPE=8
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SIGILL=4
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SIGINT=2
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SIGSEGV=11
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SIGTERM=15
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SIG_DFL=0
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SIG_IGN=1
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def signal(signalnum, handler) :
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pass
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