/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│ │ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │ ╞══════════════════════════════════════════════════════════════════════════════╡ │ Copyright 2022 Justine Alexandra Roberts Tunney │ │ │ │ Permission to use, copy, modify, and/or distribute this software for │ │ any purpose with or without fee is hereby granted, provided that the │ │ above copyright notice and this permission notice appear in all copies. │ │ │ │ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │ │ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │ │ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │ │ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │ │ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │ │ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │ │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │ │ PERFORMANCE OF THIS SOFTWARE. │ ╚─────────────────────────────────────────────────────────────────────────────*/ #include "libc/calls/blockcancel.internal.h" #include "libc/calls/cp.internal.h" #include "libc/intrin/describebacktrace.h" #include "libc/intrin/kprintf.h" #include "libc/nexgen32e/stackframe.h" #include "libc/runtime/internal.h" #include "libc/runtime/runtime.h" #include "libc/thread/posixthread.internal.h" #include "libc/thread/tls.h" #ifdef MODE_DBG int begin_cancelation_point(void) { int state = 0; if (__tls_enabled) { struct PosixThread *pt; if ((pt = _pthread_self())) { state = pt->pt_flags & PT_INCANCEL; pt->pt_flags |= PT_INCANCEL; } } return state; } void end_cancelation_point(int state) { if (__tls_enabled) { struct PosixThread *pt; if ((pt = _pthread_self())) { pt->pt_flags &= ~PT_INCANCEL; pt->pt_flags |= state; } } } void report_cancelation_point(int sysv_ordinal, int xnu_ordinal) { char bt[160]; struct StackFrame *bp = __builtin_frame_address(0); kprintf("error: report_cancelation_point(%#x, %#x) %s\n", sysv_ordinal, xnu_ordinal, _DescribeBacktrace(bt, bp)); __builtin_trap(); } #endif /* MODE_DBG */