Mercurial > hg > octave-kai > gnulib-hg
annotate lib/sleep.c @ 17463:203c036eb0c6
bootstrap: support checksum utils without a --status option
* build-aux/bootstrap: Only look for sha1sum if updating po files.
Add sha1 to the list of supported checksum utils since it's now
supported through adjustments below.
(update_po_files): Remove the use of --status
in a way that will suppress all error messages, but since this is
only used to minimize updates, it shouldn't cause an issue.
Exit early if there is a problem updating the po file checksums.
(find_tool): Remove the check for --version support as this
is optional as per commit 86186b17. Don't even check for the
presence of the command as if that is needed, it's supported
through configuring prerequisites in bootstrap.conf.
Prompt that when a tool isn't found, one can define an environment
variable to add to the hardcoded search list.
| author | Pádraig Brady <P@draigBrady.com> |
|---|---|
| date | Thu, 08 Aug 2013 11:08:49 +0100 (2013-08-08) |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
| 8786 | 1 /* Pausing execution of the current thread. |
|
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maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
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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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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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Bruno Haible <bruno@clisp.org>
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7 the Free Software Foundation; either version 3 of the License, or |
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Bruno Haible <bruno@clisp.org>
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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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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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sleep, nanosleep: Work around Linux 2.6.9 nanosleep bug.
Bruno Haible <bruno@clisp.org>
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53 garbage answer. Similarly, Linux 2.6.9 with glibc 2.3.4 has a too |
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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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Bruno Haible <bruno@clisp.org>
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59 verify (UINT_MAX / 24 / 24 / 60 / 60); |
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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 |