Mercurial > gnulib
annotate tests/test-getrusage.c @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Tue, 19 Mar 2013 09:08:47 -0700 |
| parents | e542fd46ad6f |
| children | 344018b6e5d7 |
| rev | line source |
|---|---|
| 16778 | 1 /* Test of getting resource utilization. |
|
17249
e542fd46ad6f
maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
parents:
16778
diff
changeset
|
2 Copyright (C) 2012-2013 Free Software Foundation, Inc. |
| 16778 | 3 |
| 4 This program is free software: you can redistribute it and/or modify | |
| 5 it under the terms of the GNU General Public License as published by | |
| 6 the Free Software Foundation; either version 3 of the License, or | |
| 7 (at your option) any later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 16 | |
| 17 /* Written by Bruno Haible <bruno@clisp.org>, 2012. */ | |
| 18 | |
| 19 #include <config.h> | |
| 20 | |
| 21 #include <sys/resource.h> | |
| 22 | |
| 23 #include "signature.h" | |
| 24 SIGNATURE_CHECK (getrusage, int, (int, struct rusage *)); | |
| 25 | |
| 26 #include <sys/time.h> | |
| 27 | |
| 28 #include "macros.h" | |
| 29 | |
| 30 volatile unsigned int counter; | |
| 31 | |
| 32 int | |
| 33 main (void) | |
| 34 { | |
| 35 struct rusage before; | |
| 36 struct rusage after; | |
| 37 int ret; | |
| 38 | |
| 39 ret = getrusage (RUSAGE_SELF, &before); | |
| 40 ASSERT (ret == 0); | |
| 41 | |
| 42 /* Busy-loop for one second. */ | |
| 43 { | |
| 44 struct timeval t0; | |
| 45 ASSERT (gettimeofday (&t0, NULL) == 0); | |
| 46 | |
| 47 for (;;) | |
| 48 { | |
| 49 struct timeval t; | |
| 50 int i; | |
| 51 | |
| 52 for (i = 0; i < 1000000; i++) | |
| 53 counter++; | |
| 54 | |
| 55 ASSERT (gettimeofday (&t, NULL) == 0); | |
| 56 if (t.tv_sec - t0.tv_sec > 1 | |
| 57 || (t.tv_sec - t0.tv_sec == 1 && t.tv_usec >= t0.tv_usec)) | |
| 58 break; | |
| 59 } | |
| 60 } | |
| 61 | |
| 62 ret = getrusage (RUSAGE_SELF, &after); | |
| 63 ASSERT (ret == 0); | |
| 64 | |
| 65 ASSERT (after.ru_utime.tv_sec >= before.ru_utime.tv_sec); | |
| 66 ASSERT (after.ru_stime.tv_sec >= before.ru_stime.tv_sec); | |
| 67 { | |
| 68 /* Compute time spent during busy-looping (in usec). */ | |
| 69 unsigned int spent_utime = | |
| 70 (after.ru_utime.tv_sec > before.ru_utime.tv_sec | |
| 71 ? (after.ru_utime.tv_sec - before.ru_utime.tv_sec - 1) * 1000000U | |
| 72 + after.ru_utime.tv_usec + (1000000U - before.ru_utime.tv_usec) | |
| 73 : after.ru_utime.tv_usec - before.ru_utime.tv_usec); | |
| 74 unsigned int spent_stime = | |
| 75 (after.ru_stime.tv_sec > before.ru_stime.tv_sec | |
| 76 ? (after.ru_stime.tv_sec - before.ru_stime.tv_sec - 1) * 1000000U | |
| 77 + after.ru_stime.tv_usec + (1000000U - before.ru_stime.tv_usec) | |
| 78 : after.ru_stime.tv_usec - before.ru_stime.tv_usec); | |
| 79 | |
| 80 ASSERT (spent_utime + spent_stime <= 2 * 1000000U); | |
| 81 /* Assume that the load during this busy-looping was less than 100. */ | |
| 82 ASSERT (spent_utime + spent_stime > 10000U); | |
| 83 } | |
| 84 | |
| 85 return 0; | |
| 86 } |