src/python-systemd/pyutil.c

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

/***
  This file is part of systemd.

  Copyright 2013 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <Python.h>
#include "pyutil.h"

void cleanup_Py_DECREFp(PyObject **p) {
        if (!*p)
                return;

        Py_DECREF(*p);
}

PyObject* absolute_timeout(uint64_t t) {
    if (t == (uint64_t) -1)
        return PyLong_FromLong(-1);
    else {
        struct timespec ts;
        uint64_t n;
        int msec;

        clock_gettime(CLOCK_MONOTONIC, &ts);
        n = (uint64_t) ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
        msec = t > n ? (int) ((t - n + 999) / 1000) : 0;

        return PyLong_FromLong(msec);
    }
}