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[3.9] bpo-41498: Fix build on platforms without sigset_t (GH-29770) (GH-29774)

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Co-authored-by: Christian Heimes <christian@python.org>
This commit is contained in:
Christian Heimes 2021-11-25 14:02:54 +02:00 • committed by GitHub
parent 151c9bf649
commit 71b414750e
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 35 additions and 18 deletions
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4
Misc/NEWS.d/next/Build/2021-11-25-09-15-04.bpo-41498.qAk5eo.rst Normal file
View file

@ -0,0 +1,4 @@
Python now compiles on platforms without ``sigset_t``. Several functions
in :mod:`signal` are not available when ``sigset_t`` is missing.
Based on patch by Roman Yurchak for pyodide.

26
Modules/clinic/signalmodule.c.h generated
View file

@ -363,7 +363,7 @@ exit:
#endif /* defined(HAVE_GETITIMER) */
#if defined(PYPTHREAD_SIGMASK)
#if defined(HAVE_SIGSET_T) && defined(PYPTHREAD_SIGMASK)
PyDoc_STRVAR(signal_pthread_sigmask__doc__,
"pthread_sigmask($module, how, mask, /)\n"
@ -405,9 +405,9 @@ exit:
return return_value;
}
#endif /* defined(PYPTHREAD_SIGMASK) */
#endif /* defined(HAVE_SIGSET_T) && defined(PYPTHREAD_SIGMASK) */
#if defined(HAVE_SIGPENDING)
#if defined(HAVE_SIGSET_T) && defined(HAVE_SIGPENDING)
PyDoc_STRVAR(signal_sigpending__doc__,
"sigpending($module, /)\n"
@ -430,9 +430,9 @@ signal_sigpending(PyObject *module, PyObject *Py_UNUSED(ignored))
return signal_sigpending_impl(module);
}
#endif /* defined(HAVE_SIGPENDING) */
#endif /* defined(HAVE_SIGSET_T) && defined(HAVE_SIGPENDING) */
#if defined(HAVE_SIGWAIT)
#if defined(HAVE_SIGSET_T) && defined(HAVE_SIGWAIT)
PyDoc_STRVAR(signal_sigwait__doc__,
"sigwait($module, sigset, /)\n"
@ -465,9 +465,9 @@ exit:
return return_value;
}
#endif /* defined(HAVE_SIGWAIT) */
#endif /* defined(HAVE_SIGSET_T) && defined(HAVE_SIGWAIT) */
#if (defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS))
#if ((defined(HAVE_SIGFILLSET) && defined(HAVE_SIGSET_T)) || defined(MS_WINDOWS))
PyDoc_STRVAR(signal_valid_signals__doc__,
"valid_signals($module, /)\n"
@ -490,9 +490,9 @@ signal_valid_signals(PyObject *module, PyObject *Py_UNUSED(ignored))
return signal_valid_signals_impl(module);
}
#endif /* (defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS)) */
#endif /* ((defined(HAVE_SIGFILLSET) && defined(HAVE_SIGSET_T)) || defined(MS_WINDOWS)) */
#if defined(HAVE_SIGWAITINFO)
#if defined(HAVE_SIGSET_T) && defined(HAVE_SIGWAITINFO)
PyDoc_STRVAR(signal_sigwaitinfo__doc__,
"sigwaitinfo($module, sigset, /)\n"
@ -523,9 +523,9 @@ exit:
return return_value;
}
#endif /* defined(HAVE_SIGWAITINFO) */
#endif /* defined(HAVE_SIGSET_T) && defined(HAVE_SIGWAITINFO) */
#if defined(HAVE_SIGTIMEDWAIT)
#if defined(HAVE_SIGSET_T) && defined(HAVE_SIGTIMEDWAIT)
PyDoc_STRVAR(signal_sigtimedwait__doc__,
"sigtimedwait($module, sigset, timeout, /)\n"
@ -562,7 +562,7 @@ exit:
return return_value;
}
#endif /* defined(HAVE_SIGTIMEDWAIT) */
#endif /* defined(HAVE_SIGSET_T) && defined(HAVE_SIGTIMEDWAIT) */
#if defined(HAVE_PTHREAD_KILL)
@ -732,4 +732,4 @@ exit:
#ifndef SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
#define SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF
#endif /* !defined(SIGNAL_PIDFD_SEND_SIGNAL_METHODDEF) */
/*[clinic end generated code: output=b41b4b6bd9ad4da2 input=a9049054013a1b77]*/
/*[clinic end generated code: output=3c8b80f14df17563 input=a9049054013a1b77]*/

8
Modules/posixmodule.c
View file

@ -5882,6 +5882,7 @@ parse_posix_spawn_flags(PyObject *module, const char *func_name, PyObject *setpg
}
#ifdef HAVE_SIGSET_T
if (setsigmask) {
sigset_t set;
if (!_Py_Sigset_Converter(setsigmask, &set)) {
@ -5907,6 +5908,13 @@ parse_posix_spawn_flags(PyObject *module, const char *func_name, PyObject *setpg
}
all_flags |= POSIX_SPAWN_SETSIGDEF;
}
#else
if (setsigmask || setsigdef) {
PyErr_SetString(PyExc_NotImplementedError,
"sigset is not supported on this platform");
goto fail;
}
#endif
if (scheduler) {
#ifdef POSIX_SPAWN_SETSCHEDULER

2
Modules/posixmodule.h
View file

@ -23,9 +23,7 @@ PyAPI_FUNC(int) _Py_Gid_Converter(PyObject *, gid_t *);
# define HAVE_SIGSET_T
#endif
#ifdef HAVE_SIGSET_T
PyAPI_FUNC(int) _Py_Sigset_Converter(PyObject *, void *);
#endif /* HAVE_SIGSET_T */
#endif /* Py_LIMITED_API */
#ifdef __cplusplus

13
Modules/signalmodule.c
View file

@ -68,6 +68,8 @@ module signal
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=b0301a3bde5fe9d3]*/
#ifdef HAVE_SETSIG_T
/*[python input]
class sigset_t_converter(CConverter):
@ -76,6 +78,7 @@ class sigset_t_converter(CConverter):
[python start generated code]*/
/*[python end generated code: output=da39a3ee5e6b4b0d input=b5689d14466b6823]*/
#endif
/*
NOTES ON THE INTERACTION BETWEEN SIGNALS AND THREADS
@ -880,6 +883,7 @@ signal_getitimer_impl(PyObject *module, int which)
#endif
#ifdef HAVE_SIGSET_T
#if defined(PYPTHREAD_SIGMASK) || defined(HAVE_SIGPENDING)
static PyObject*
sigset_to_set(sigset_t mask)
@ -1011,9 +1015,9 @@ signal_sigwait_impl(PyObject *module, sigset_t sigset)
}
#endif /* #ifdef HAVE_SIGWAIT */
#endif /* #ifdef HAVE_SIGSET_T */
#if defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS)
#if (defined(HAVE_SIGFILLSET) && defined(HAVE_SIGSET_T)) || defined(MS_WINDOWS)
/*[clinic input]
signal.valid_signals
@ -1051,7 +1055,8 @@ signal_valid_signals_impl(PyObject *module)
#endif
}
#endif /* #if defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS) */
#endif /* #if (defined(HAVE_SIGFILLSET) && defined(HAVE_SIGSET_T)) || defined(MS_WINDOWS) */
#if defined(HAVE_SIGWAITINFO) || defined(HAVE_SIGTIMEDWAIT)
@ -1117,6 +1122,7 @@ fill_siginfo(siginfo_t *si)
}
#endif
#ifdef HAVE_SIGSET_T
#ifdef HAVE_SIGWAITINFO
/*[clinic input]
@ -1219,6 +1225,7 @@ signal_sigtimedwait_impl(PyObject *module, sigset_t sigset,
}
#endif /* #ifdef HAVE_SIGTIMEDWAIT */
#endif /* #ifdef HAVE_SIGSET_T */
#if defined(HAVE_PTHREAD_KILL)