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signal: add strsignal() (#6017)

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Co-authored-by: Vajrasky Kok <sky.kok@speaklikeaking.com>
This commit is contained in:
Antoine Pietri 2018-03-12 14:42:34 +01:00 • committed by Antoine Pitrou
parent 4484f9dca9
commit 5d2a27de62
5 changed files with 109 additions and 1 deletions
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61
Modules/signalmodule.c
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@ -504,6 +504,66 @@ signal_getsignal_impl(PyObject *module, int signalnum)
}
}
/*[clinic input]
signal.strsignal
signalnum: int
/
Return the system description of the given signal.
The return values can be such as "Interrupt", "Segmentation fault", etc.
Returns None if the signal is not recognized.
[clinic start generated code]*/
static PyObject *
signal_strsignal_impl(PyObject *module, int signalnum)
/*[clinic end generated code: output=44e12e1e3b666261 input=b77914b03f856c74]*/
{
char *res;
if (signalnum < 1 || signalnum >= NSIG) {
PyErr_SetString(PyExc_ValueError,
"signal number out of range");
return NULL;
}
#ifdef MS_WINDOWS
/* Custom redefinition of POSIX signals allowed on Windows */
switch (signalnum) {
case SIGINT:
res = "Interrupt";
break;
case SIGILL:
res = "Illegal instruction";
break;
case SIGABRT:
res = "Aborted";
break;
case SIGFPE:
res = "Floating point exception";
break;
case SIGSEGV:
res = "Segmentation fault";
break;
case SIGTERM:
res = "Terminated";
break;
default:
Py_RETURN_NONE;
}
#else
errno = 0;
res = strsignal(signalnum);
if (errno || res == NULL || strstr(res, "Unknown signal") != NULL)
Py_RETURN_NONE;
#endif
return Py_BuildValue("s", res);
}
#ifdef HAVE_SIGINTERRUPT
/*[clinic input]
@ -1152,6 +1212,7 @@ static PyMethodDef signal_methods[] = {
SIGNAL_SETITIMER_METHODDEF
SIGNAL_GETITIMER_METHODDEF
SIGNAL_SIGNAL_METHODDEF
SIGNAL_STRSIGNAL_METHODDEF
SIGNAL_GETSIGNAL_METHODDEF
{"set_wakeup_fd", (PyCFunction)signal_set_wakeup_fd, METH_VARARGS | METH_KEYWORDS, set_wakeup_fd_doc},
SIGNAL_SIGINTERRUPT_METHODDEF