mirror of
https://github.com/jart/cosmopolitan.git
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b5f743cdc3
We now build a separate APE binary for each test so they can run in parallel. We've got 148 tests running fast and stable so far.
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Python 3 │
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│ https://docs.python.org/3/license.html │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/sigbits.h"
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#include "third_party/python/Include/pydebug.h"
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#include "third_party/python/Include/pylifecycle.h"
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#include "third_party/python/pyconfig.h"
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/* clang-format off */
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PyOS_sighandler_t
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PyOS_getsig(int sig)
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{
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#ifdef HAVE_SIGACTION
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struct sigaction context;
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if (sigaction(sig, NULL, &context) == -1)
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return SIG_ERR;
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return context.sa_handler;
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#else
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PyOS_sighandler_t handler;
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/* Special signal handling for the secure CRT in Visual Studio 2005 */
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#if defined(_MSC_VER) && _MSC_VER >= 1400
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switch (sig) {
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/* Only these signals are valid */
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case SIGINT:
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case SIGILL:
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case SIGFPE:
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case SIGSEGV:
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case SIGTERM:
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case SIGBREAK:
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case SIGABRT:
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break;
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/* Don't call signal() with other values or it will assert */
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default:
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return SIG_ERR;
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}
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#endif /* _MSC_VER && _MSC_VER >= 1400 */
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handler = signal(sig, SIG_IGN);
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if (handler != SIG_ERR)
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signal(sig, handler);
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return handler;
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#endif
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}
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/*
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* All of the code in this function must only use async-signal-safe functions,
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* listed at `man 7 signal` or
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* http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html.
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*/
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PyOS_sighandler_t
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PyOS_setsig(int sig, PyOS_sighandler_t handler)
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{
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#ifdef HAVE_SIGACTION
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/* Some code in Modules/signalmodule.c depends on sigaction() being
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* used here if HAVE_SIGACTION is defined. Fix that if this code
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* changes to invalidate that assumption.
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*/
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struct sigaction context, ocontext;
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context.sa_handler = handler;
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sigemptyset(&context.sa_mask);
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context.sa_flags = 0;
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if (sigaction(sig, &context, &ocontext) == -1)
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return SIG_ERR;
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return ocontext.sa_handler;
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#else
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PyOS_sighandler_t oldhandler;
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oldhandler = signal(sig, handler);
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#ifdef HAVE_SIGINTERRUPT
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siginterrupt(sig, 1);
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#endif
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return oldhandler;
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#endif
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}
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