Mercurial > hg > octave-kai > gnulib-hg
annotate lib/sleep.c @ 17323:a56636d89038
secure_getenv: fix include typo
* lib/secure_getenv.c: Include config.h. Somehow I forgot!
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Thu, 07 Feb 2013 21:58:09 -0800 |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
| 8786 | 1 /* Pausing execution of the current thread. |
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e542fd46ad6f
maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
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16358
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2 Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc. |
| 8786 | 3 Written by Bruno Haible <bruno@clisp.org>, 2007. |
| 4 | |
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
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8786
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5 This program is free software: you can redistribute it and/or modify |
| 8786 | 6 it under the terms of the GNU General Public License as published by |
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
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8786
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changeset
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7 the Free Software Foundation; either version 3 of the License, or |
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bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8786
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changeset
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8 (at your option) any later version. |
| 8786 | 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 | |
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8786
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changeset
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 8786 | 17 |
| 18 #include <config.h> | |
| 19 | |
| 20 /* Specification. */ | |
| 21 #include <unistd.h> | |
| 22 | |
| 12326 | 23 #include <limits.h> |
| 24 | |
| 25 #include "verify.h" | |
| 26 | |
| 8786 | 27 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ |
| 28 | |
| 29 # define WIN32_LEAN_AND_MEAN /* avoid including junk */ | |
| 30 # include <windows.h> | |
| 31 | |
| 32 unsigned int | |
| 33 sleep (unsigned int seconds) | |
| 34 { | |
| 35 unsigned int remaining; | |
| 36 | |
| 37 /* Sleep for 1 second many times, because | |
| 16358 | 38 1. Sleep is not interruptible by Ctrl-C, |
| 8786 | 39 2. we want to avoid arithmetic overflow while multiplying with 1000. */ |
| 40 for (remaining = seconds; remaining > 0; remaining--) | |
| 41 Sleep (1000); | |
| 42 | |
| 43 return remaining; | |
| 44 } | |
| 45 | |
| 12326 | 46 #elif HAVE_SLEEP |
| 47 | |
| 48 # undef sleep | |
| 49 | |
| 50 /* Guarantee unlimited sleep and a reasonable return value. Cygwin | |
| 51 1.5.x rejects attempts to sleep more than 49.7 days (2**32 | |
| 52 milliseconds), but uses uninitialized memory which results in a | |
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13852
299859ce1b75
sleep, nanosleep: Work around Linux 2.6.9 nanosleep bug.
Bruno Haible <bruno@clisp.org>
parents:
12559
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53 garbage answer. Similarly, Linux 2.6.9 with glibc 2.3.4 has a too |
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299859ce1b75
sleep, nanosleep: Work around Linux 2.6.9 nanosleep bug.
Bruno Haible <bruno@clisp.org>
parents:
12559
diff
changeset
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54 small return value when asked to sleep more than 24.85 days. */ |
| 12326 | 55 unsigned int |
| 56 rpl_sleep (unsigned int seconds) | |
| 57 { | |
| 58 /* This requires int larger than 16 bits. */ | |
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13852
299859ce1b75
sleep, nanosleep: Work around Linux 2.6.9 nanosleep bug.
Bruno Haible <bruno@clisp.org>
parents:
12559
diff
changeset
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59 verify (UINT_MAX / 24 / 24 / 60 / 60); |
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299859ce1b75
sleep, nanosleep: Work around Linux 2.6.9 nanosleep bug.
Bruno Haible <bruno@clisp.org>
parents:
12559
diff
changeset
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60 const unsigned int limit = 24 * 24 * 60 * 60; |
| 12326 | 61 while (limit < seconds) |
| 62 { | |
| 63 unsigned int result; | |
| 64 seconds -= limit; | |
| 65 result = sleep (limit); | |
| 66 if (result) | |
| 67 return seconds + result; | |
| 68 } | |
| 69 return sleep (seconds); | |
| 70 } | |
| 71 | |
| 72 #else /* !HAVE_SLEEP */ | |
| 8786 | 73 |
| 74 #error "Please port gnulib sleep.c to your platform, possibly using usleep() or select(), then report this to bug-gnulib." | |
| 75 | |
| 76 #endif |