/*-*- 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 2021 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/dce.h"
#include "libc/intrin/describebacktrace.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/strace.h"
#include "libc/runtime/runtime.h"

dontinstrument void __stracef(const char *fmt, ...) {
  va_list v;
  if (strace_enabled(0) <= 0)
    return;
  va_start(v, fmt);
  kvprintf(fmt, v);
  va_end(v);
}

#if IsModeDbg()
void report_cancellation_point(void) {
  kprintf("error: cancelable raw system call not annotated in wrapper\n"
          "choice #1 use BLOCK_CANCELATION / ALLOW_CANCELATION\n"
          "choice #2 use BEGIN_CANCELATION_POINT / END_CANCELATION_POINT\n"
          "backtrace: %s\n",
          DescribeBacktrace(__builtin_frame_address(0)));
  __builtin_trap();
}
#endif
