projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 34 | #if defined(LIBC_SCCS) && !defined(lint) | |
| 35 | static char sccsid[] = "@(#)times.c 5.4 (Berkeley) 8/27/90"; | |
| 36 | #endif /* LIBC_SCCS and not lint */ | |
| 37 | ||
| 38 | #include <sys/param.h> | |
| 39 | #include <sys/time.h> | |
| 40 | #include <sys/times.h> | |
| 41 | #include <sys/resource.h> | |
| 42 | ||
| 43 | /* | |
| 44 | * Convert usec to clock ticks; could do (usec * CLK_TCK) / 1000000, | |
| 45 | * but this would overflow if we switch to nanosec. | |
| 46 | */ | |
| 47 | #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) | |
| 48 | ||
| 49 | clock_t | |
| 50 | times(tp) | |
| 51 | register struct tms *tp; | |
| 52 | { | |
| 53 | struct rusage ru; | |
| 54 | struct timeval t; | |
| 55 | ||
| 56 | if (getrusage(RUSAGE_SELF, &ru) < 0) | |
| 57 | return ((clock_t)-1); | |
| 58 | tp->tms_utime = CONVTCK(ru.ru_utime); | |
| 59 | tp->tms_stime = CONVTCK(ru.ru_stime); | |
| 60 | if (getrusage(RUSAGE_CHILDREN, &ru) < 0) | |
| 61 | return ((clock_t)-1); | |
| 62 | tp->tms_cutime = CONVTCK(ru.ru_utime); | |
| 63 | tp->tms_cstime = CONVTCK(ru.ru_stime); | |
| 64 | if (gettimeofday(&t, (struct timezone *)0)) | |
| 65 | return ((clock_t)-1); | |
| 66 | return ((clock_t)(CONVTCK(t))); | |
| 67 | } |