diff options
Diffstat (limited to 'libc/unistd/time.c')
-rw-r--r-- | libc/unistd/time.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libc/unistd/time.c b/libc/unistd/time.c new file mode 100644 index 0000000..13d7366 --- /dev/null +++ b/libc/unistd/time.c @@ -0,0 +1,62 @@ +/* $OpenBSD: time.c,v 1.5 2005/08/08 08:05:34 espie Exp $ */ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <time.h> + +time_t +time(time_t *t) +{ + struct timeval tt; + + if (gettimeofday(&tt, (struct timezone *)0) < 0) + return (-1); + if (t) + *t = (time_t)tt.tv_sec; + return (tt.tv_sec); +} + + +clock_t +clock(void) +{ + struct timespec tm; + static int clock_inited; + static clock_t clock_start; + clock_t now; + + clock_gettime( CLOCK_MONOTONIC, &tm); + now = tm.tv_sec * CLOCKS_PER_SEC + (tm.tv_nsec * (CLOCKS_PER_SEC/1e9)); + + if (!clock_inited) { + clock_start = now; + clock_inited = 1; + } + return now - clock_start; +} |