glibc/sysdeps/mach/hurd/getpid.c

/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <unistd.h>
#include <hurd.h>

/* Get the process ID of the calling process.  */
pid_t
__getpid (void)
{
  /* Assumes atomic word fetch and store, so doesn't lock _hurd_pid_lock.  */
  return _hurd_pid;
}
libc_hidden_def (__getpid)
weak_alias (__getpid, getpid)
libc_hidden_weak (getpid)