| Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/xnanosleep.c |
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| 1 | /* xnanosleep.c -- a more convenient interface to nanosleep | - | ||||||||||||
| 2 | - | |||||||||||||
| 3 | Copyright (C) 2002-2007, 2009-2018 Free Software Foundation, Inc. | - | ||||||||||||
| 4 | - | |||||||||||||
| 5 | This program is free software: you can redistribute it and/or modify | - | ||||||||||||
| 6 | it under the terms of the GNU General Public License as published by | - | ||||||||||||
| 7 | the Free Software Foundation; either version 3 of the License, or | - | ||||||||||||
| 8 | (at your option) any later version. | - | ||||||||||||
| 9 | - | |||||||||||||
| 10 | This program is distributed in the hope that it will be useful, | - | ||||||||||||
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | - | ||||||||||||
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | - | ||||||||||||
| 13 | GNU General Public License for more details. | - | ||||||||||||
| 14 | - | |||||||||||||
| 15 | You should have received a copy of the GNU General Public License | - | ||||||||||||
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | - | ||||||||||||
| 17 | - | |||||||||||||
| 18 | /* Mostly written (for sleep.c) by Paul Eggert. | - | ||||||||||||
| 19 | Factored out (creating this file) by Jim Meyering. */ | - | ||||||||||||
| 20 | - | |||||||||||||
| 21 | #include <config.h> | - | ||||||||||||
| 22 | - | |||||||||||||
| 23 | #include "xnanosleep.h" | - | ||||||||||||
| 24 | - | |||||||||||||
| 25 | #include <timespec.h> | - | ||||||||||||
| 26 | - | |||||||||||||
| 27 | #include <errno.h> | - | ||||||||||||
| 28 | #include <time.h> | - | ||||||||||||
| 29 | - | |||||||||||||
| 30 | /* Sleep until the time (call it WAKE_UP_TIME) specified as | - | ||||||||||||
| 31 | SECONDS seconds after the time this function is called. | - | ||||||||||||
| 32 | SECONDS must be non-negative. If SECONDS is so large that | - | ||||||||||||
| 33 | it is not representable as a 'struct timespec', then use | - | ||||||||||||
| 34 | the maximum value for that interval. Return -1 on failure | - | ||||||||||||
| 35 | (setting errno), 0 on success. */ | - | ||||||||||||
| 36 | - | |||||||||||||
| 37 | int | - | ||||||||||||
| 38 | xnanosleep (double seconds) | - | ||||||||||||
| 39 | { | - | ||||||||||||
| 40 | struct timespec ts_sleep = dtotimespec (seconds); | - | ||||||||||||
| 41 | - | |||||||||||||
| 42 | for (;;) | - | ||||||||||||
| 43 | { | - | ||||||||||||
| 44 | /* Linux-2.6.8.1's nanosleep returns -1, but doesn't set errno | - | ||||||||||||
| 45 | when resumed after being suspended. Earlier versions would | - | ||||||||||||
| 46 | set errno to EINTR. nanosleep from linux-2.6.10, as well as | - | ||||||||||||
| 47 | implementations by (all?) other vendors, doesn't return -1 | - | ||||||||||||
| 48 | in that case; either it continues sleeping (if time remains) | - | ||||||||||||
| 49 | or it returns zero (if the wake-up time has passed). */ | - | ||||||||||||
| 50 | errno = 0; | - | ||||||||||||
| 51 | if (nanosleep (&ts_sleep, NULL) == 0)
| 0-408 | ||||||||||||
| 52 | break; executed 408 times by 2 tests: break;Executed by:
| 408 | ||||||||||||
| 53 | if (errno != EINTR && errno != 0)
| 0 | ||||||||||||
| 54 | return -1; never executed: return -1; | 0 | ||||||||||||
| 55 | } never executed: end of block | 0 | ||||||||||||
| 56 | - | |||||||||||||
| 57 | return 0; executed 408 times by 2 tests: return 0;Executed by:
| 408 | ||||||||||||
| 58 | } | - | ||||||||||||
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