/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net 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/assert.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/log/backtrace.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.internal.h"
#include "libc/runtime/symbols.internal.h"
#include "libc/sysv/consts/clone.h"
#include "libc/testlib/testlib.h"
#include "libc/time/time.h"

volatile int x;

int thread(void *arg) {
  return (x = 42);
}

TEST(clone, test) {
  if (!IsLinux() && !IsNetbsd() && !IsWindows()) return;
  char *stack;
  long double t;
  int tid, ptid, ctid, tls, ws;
  t = nowl();
  stack = gc(malloc(FRAMESIZE));
  EXPECT_NE(-1, (tid = clone(thread, stack + FRAMESIZE,
                             CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
                             0, &ptid, &tls, &ctid)));
  while ((nowl() - t) < 1 && !x) asm("pause");
  ASSERT_EQ(42, x);
}