Florian Forster [Fri, 24 Sep 2010 09:52:52 +0000 (11:52 +0200)]
curl_json plugin: Restore struct when handling error.
Florian Forster [Wed, 15 Sep 2010 15:21:40 +0000 (17:21 +0200)]
src/collectd.h: Do not include <sensors/sensors.h> here.
Aurelien Reynaud [Sat, 19 Jun 2010 18:03:52 +0000 (20:03 +0200)]
Fix errno thread-safety under AIX
Unlike Linux or Solaris, errno under AIX is not thread-safe by
default.
This patch sets _THREAD_SAFE_ERRNO when AIX is detected in order to
force the thread-safe implementation of errno. Without this, calls
like stat() in the rrdtool plugin fail with errno incorrectly set,
leading to the inability to create previously absent rrd files.
Maybe _THREAD_SAFE should be set instead, to prevent other possible
threads-related problems, but this is enough to scratch my current
itch...
Here is the relevant part of /usr/include/errno.h on AIX:
#if defined(_THREAD_SAFE) || defined(_THREAD_SAFE_ERRNO)
/*
* Per thread errno is provided by the threads provider. Both the extern
* int
* and the per thread value must be maintained by the threads library.
*/
extern int *_Errno( void );
#define errno (*_Errno())
#else
extern int errno;
#endif /* _THREAD_SAFE || _THREAD_SAFE_ERRNO */
Signed-off-by: Aurelien Reynaud <collectd@wattapower.net>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Florian Forster [Sun, 5 Sep 2010 08:12:02 +0000 (10:12 +0200)]
collection3: Add graph for "ps_disk_octets".
Florian Forster [Sun, 5 Sep 2010 07:42:40 +0000 (09:42 +0200)]
notify_email plugin: Check for "session == NULL" and return gracefully.
I don't know how libesmtp handles NULL pointers and I don't want to take
my chances.
Florian Forster [Sun, 5 Sep 2010 07:36:55 +0000 (09:36 +0200)]
notify_email plugin: Serialize all accesses to libesmtp using a mutex.
Jerome Oufella [Wed, 1 Sep 2010 18:35:58 +0000 (14:35 -0400)]
collection3: fix multiple hosts selection issue
When selecting multiple hosts in collection3's hosts list, and with some
plugins only (the ones that use a specific resource name such as memory
or tcpconns), the resulting graph list will be limited to one single
graph (instead of one per host).
This patch addresses this issue by modifying the name of the hash key
in the group_files_by_plugin_instance function, making it less prone
to name collisions by prefixing it by the host name.
Comments and enhancements will be welcome.
Signed-off-by: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Florian Forster [Wed, 1 Sep 2010 18:36:40 +0000 (20:36 +0200)]
network plugin: Use the complain mechanism to inform the user about ignored signatures.
Sebastian Harl [Mon, 23 Aug 2010 17:02:06 +0000 (19:02 +0200)]
src/utils_tail: Remove newline characters at the end of a line.
The tool is supposed to work line-based, so a) the newline character is
implicit and b) imho, does not belong to the string which is then further
processed.
Also, this allows '$' to match the end of a line when applying a regex to the
line, no matter if the REG_NEWLINE flag has been used when compiling the regex
or not.
Sebastian Harl [Mon, 23 Aug 2010 16:56:02 +0000 (18:56 +0200)]
utils_match: Let '^' and '$' affect lines rather than the full string.
The regcomp() flag REG_NEWLINE is required for that, even though regex(7)
might make people think otherwise.
Florian Forster [Fri, 20 Aug 2010 06:22:00 +0000 (08:22 +0200)]
src/collectd.conf.in: Move "TimeToLive" before the "Server" and "Listen" statements.
Thanks to Renaud Chaput for pointing this out!
Florian Forster [Thu, 19 Aug 2010 13:00:26 +0000 (15:00 +0200)]
src/utils_heap.c: Fix calculation of the parent's index.
This resulted in the "upwards" reheap function to return prematurely,
leaving the heap condition violated.
Florian Forster [Tue, 17 Aug 2010 16:52:36 +0000 (18:52 +0200)]
src/plugin.c: Improve an info message.
Based on a patch by Sebastian, which didn't use the handy "FORMAT_VL"
macro.
Florian Forster [Tue, 17 Aug 2010 06:07:35 +0000 (08:07 +0200)]
collectd.conf(5): Document he "Derive*" and "AbsoluteSet" DSTypes of the tail plugin.
Florian Forster [Tue, 17 Aug 2010 06:05:38 +0000 (08:05 +0200)]
src/utils_match.c: Use strtoull(3) for counter and absolute data sources.
Florian Forster [Mon, 16 Aug 2010 08:32:27 +0000 (10:32 +0200)]
src/utils_match.h: Fix a bug preventing derive values from being handled correctly.
Due to the bit-wise check, the value for derive (0x30) matches the check
for gauge (0x10), too. This commit fixes the behavior by assigning other
numeric values to the defines.
Florian Forster [Fri, 13 Aug 2010 21:15:48 +0000 (23:15 +0200)]
src/configfile.c: Continue parsing config files if stat'ing one file fails.
Florian Forster [Sun, 8 Aug 2010 08:59:15 +0000 (10:59 +0200)]
curl json: Fix checking the response code.
Florian Forster [Wed, 4 Aug 2010 12:40:04 +0000 (14:40 +0200)]
curl_json plugin: Use a more descriptive define as return value.
Sebastian Harl [Wed, 28 Jul 2010 20:42:48 +0000 (22:42 +0200)]
collectd-perl(5): Mention that "Globals" should be enabled.
Sebastian Harl [Wed, 28 Jul 2010 20:42:23 +0000 (22:42 +0200)]
collectd.conf(5): Documents LoadPlugin's "Globals" option.
Florian Forster [Tue, 13 Jul 2010 11:58:34 +0000 (13:58 +0200)]
curl_json plugin: Use the "number" callback of libyajl.
The "integer" callback only works with "long"s, which are 32bit on
x86 and other 32bit architectures. The "number" callback gets the raw
string for us to parse ourselves – honoring the data source type in the
process.
The "integer" and "double" callbacks have been removed, since they are not
used if the "number" callback is present.
Florian Forster [Fri, 9 Jul 2010 09:47:07 +0000 (11:47 +0200)]
ChangeLog: Fix the release date for 4.9.3.
Florian Forster [Fri, 9 Jul 2010 09:39:08 +0000 (11:39 +0200)]
Bumped version to 4.9.3; Updated ChangeLog.
Florian Forster [Tue, 6 Jul 2010 11:00:32 +0000 (13:00 +0200)]
src/plugin.c: Check "read_loop" when returning from "pthread_cond_timedwait".
Otherwise it may take up to $Interval seconds until all read threads
shut down. This bug was introduced in version 4.8.4 (commit
dbe1a7d).
Florian Forster [Mon, 28 Jun 2010 15:52:19 +0000 (17:52 +0200)]
Remove usage of obsoleted XSI extensions wrt. the "test" command.
Alexander Wuerstlein [Mon, 28 Jun 2010 07:57:02 +0000 (09:57 +0200)]
Fix usage of Solaris /usr/bin/echo
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Florian Forster [Mon, 28 Jun 2010 08:01:39 +0000 (10:01 +0200)]
df plugin: Remove the complaint code again.
Calls to the plugin are delayed when an error is returned anyway, so it's
better to have an error message in addition to the "has failed, will suspend"
message generated in src/plugin.c.
Florian Forster [Mon, 28 Jun 2010 07:25:58 +0000 (09:25 +0200)]
df plugin: Report an error if "cu_mount_getlist" fails.
Florian Forster [Thu, 24 Jun 2010 14:08:43 +0000 (16:08 +0200)]
collection3: df_complex graph: Add "reserved" space.
Florian Forster [Thu, 24 Jun 2010 14:05:53 +0000 (16:05 +0200)]
collection3: Add Windows data sources to the "memory" graph.
Florian Forster [Thu, 24 Jun 2010 14:05:21 +0000 (16:05 +0200)]
collection3: Add graphs for "bitrate", "signal_power", "signal_quality", and "snr".
Florian Forster [Wed, 16 Jun 2010 13:36:44 +0000 (15:36 +0200)]
bindings/java/Makefile.am: Fix rebuilding of Java plugins.
Florian Forster [Sun, 13 Jun 2010 13:50:48 +0000 (15:50 +0200)]
bind plugin: Fix building with --enable-standards.
Florian Forster [Wed, 9 Jun 2010 08:38:55 +0000 (10:38 +0200)]
Merge remote branch 'tokkee/sh/collectd-4.9' into collectd-4.9
Florian Forster [Wed, 9 Jun 2010 08:38:11 +0000 (10:38 +0200)]
contrib/GenericJMX.conf: Use the "jmx_memory" type.
Timur Kirilichev [Fri, 7 May 2010 02:31:26 +0000 (06:31 +0400)]
collectd2html.pl: Further improvements to the XHTML support.
Signed-off-by: Sebastian Harl <sh@tokkee.org>
Max Henkel [Thu, 8 Apr 2010 10:06:29 +0000 (12:06 +0200)]
collectd2html.pl: Produce XHTML output.
… as requested in Debian bug #575029.
Signed-off-by: Sebastian Harl <tokkee@debian.org>
Yuri D'Elia [Fri, 18 Dec 2009 11:33:31 +0000 (12:33 +0100)]
collectd2html: Fixed recursive mode.
Also, improved default settings to match the collectd4 series.
Signed-off-by: Sebastian Harl <tokkee@debian.org>
Luke Heberling [Sun, 30 Aug 2009 19:41:13 +0000 (12:41 -0700)]
powerdns plugin: Fixed communication when talking to pdns 2.9.22.
powerdns version 2.9.22 (and above) require a newline at the end of
commands sent to the server.
Signed-off-by: Sebastian Harl <tokkee@debian.org>
Aurelien Reynaud [Wed, 12 May 2010 09:55:05 +0000 (11:55 +0200)]
snmp.c: compilation fixes for AIX
The C and C++ standards allows the character type char to be signed or
unsigned, depending on the platform and compiler. Most systems,
including x86 GNU/Linux and Microsoft Windows, use signed char, but
those based on PowerPC and ARM processors typically use unsigned char.
This patch fixes a "comparison is always true" warning on AIX (powerpc)
which leads the compilation to abort because of the -Werror flag.
Being unsigned by default, a char is always >0.
Signed-off-by: Aurelien Reynaud <collectd@wattapower.net>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Aurelien Reynaud [Wed, 12 May 2010 09:55:04 +0000 (11:55 +0200)]
processes.c: fix uninitialized variables warnings
Signed-off-by: Aurelien Reynaud <collectd@wattapower.net>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Johan Van den Brande [Wed, 19 May 2010 10:23:23 +0000 (12:23 +0200)]
Bugfix for libcollectdclient lcc_putval.
Hello,
I'm using collectd to monitor system and process parameters of our code under
test running on a cluster. The test processes communicate to collectd via the
unixsock plugin, but there was a small error in the client library which I had
to fix first.
The wire format of the putval command is missing a space behind the closing
double quote of the identifier. As I said, it is a small fix, but nevertheless
I attached the patch for client.c. The bug is present in 4.6 (that is the
version I'm using in production), but I fixed it against 4.10.0.
Cheers,
Johan
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Florian Forster [Wed, 19 May 2010 10:14:46 +0000 (12:14 +0200)]
snmp plugin: csnmp_value_list_to_value: Include the OID in the log message.
Florian Forster [Wed, 19 May 2010 09:47:45 +0000 (11:47 +0200)]
snmp plugin: Don't print a warning if the ASN type is "ASN_NULL".
Thanks to "Flyinvap" for pointing this out.
Florian Forster [Wed, 19 May 2010 08:47:58 +0000 (10:47 +0200)]
Merge remote branch 'origin/collectd-4.9' into collectd-4.9
Max Henkel [Tue, 4 May 2010 21:39:18 +0000 (23:39 +0200)]
configure.in: htonll check depends on linker
Fixing a cross-compile issue by depending only on a linker check.
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Sven Trenkel [Sat, 15 May 2010 20:36:25 +0000 (22:36 +0200)]
python: Fixed some memory leaks in the write and notification callbacks.
Thanks to Volkmar Uhlig for the hint.
Sven Trenkel [Mon, 3 May 2010 13:01:56 +0000 (15:01 +0200)]
python: Fixed a crash if the plugin was loaded but not configured.
Florian Forster [Sat, 1 May 2010 09:00:22 +0000 (11:00 +0200)]
Merge branch 'collectd-4.8' into collectd-4.9
Thorsten von Eicken [Sat, 1 May 2010 08:03:15 +0000 (10:03 +0200)]
rrdcached.c needs to include rrd.h
Florian Forster [Sat, 1 May 2010 07:53:12 +0000 (09:53 +0200)]
Build system: Check for "strtok_r" availability with "-Wall -Werror" when using GCC.
Previously, the check was done without "-Werror" which resulted in a
warning and success. When the daemon was later built with "-Werror" set,
that warning would result in an error and abort the build.
Thanks to Aurélien Reynaud for reporting the problem.
Florian Forster [Sat, 1 May 2010 07:35:01 +0000 (09:35 +0200)]
Merge branch 'collectd-4.8' into collectd-4.9
Florian Forster [Thu, 29 Apr 2010 07:57:18 +0000 (09:57 +0200)]
configure.in: Put conditionals around <inttypes.h>, too, for consistency's sake.
Aurélien Reynaud [Thu, 29 Apr 2010 07:39:48 +0000 (09:39 +0200)]
Solaris 8 fixes: Check for <stdint.h> before inclusion.
Aurélien Reynaud [Thu, 29 Apr 2010 07:37:57 +0000 (09:37 +0200)]
Solaris 8 fixes: Fall back to putenv(3).
Florian Forster [Sun, 25 Apr 2010 13:32:50 +0000 (15:32 +0200)]
collectd-nagios.c: Output performance data with the "%f" format string.
Apparently the parser used by nagios is dumb as bread. Thanks to Lao Wai
for pointing this out. For more information, see:
<http://nagiosplug.sourceforge.net/developer-guidelines.html#AEN201>
Florian Forster [Thu, 22 Apr 2010 09:28:19 +0000 (11:28 +0200)]
Bumped version to 4.9.2; Updated ChangeLog.
Florian Forster [Thu, 22 Apr 2010 09:14:25 +0000 (11:14 +0200)]
Merge branch 'collectd-4.8' into collectd-4.9
Conflicts:
ChangeLog
Florian Forster [Thu, 22 Apr 2010 09:06:16 +0000 (11:06 +0200)]
Bumped version to 4.8.5; Updated ChangeLog.
Florian Forster [Wed, 21 Apr 2010 17:04:01 +0000 (19:04 +0200)]
Merge branch 'collectd-4.8' into collectd-4.9
Conflicts:
ChangeLog
Florian Forster [Wed, 21 Apr 2010 14:23:46 +0000 (16:23 +0200)]
src/plugin.c: plugin_log: Append newline to message …
… even when no log-plugin was loaded.
Florian Forster [Wed, 21 Apr 2010 14:19:53 +0000 (16:19 +0200)]
network plugin: Don't access values in an already freed array.
Florian Forster [Mon, 19 Apr 2010 11:05:15 +0000 (13:05 +0200)]
contrib/exec-nagios.px: Whitespace and POD fixes.
Florian Forster [Wed, 7 Apr 2010 10:55:03 +0000 (12:55 +0200)]
Bumped version to 4.8.2; Updated ChangeLog.
Florian Forster [Wed, 7 Apr 2010 09:55:15 +0000 (11:55 +0200)]
Merge branch 'collectd-4.8' into collectd-4.9
Florian Forster [Wed, 7 Apr 2010 09:53:32 +0000 (11:53 +0200)]
network plugin: Fix a severe memory leak.
A couple of bytes were leaked with every encrypted packet received.
Florian Forster [Wed, 7 Apr 2010 09:41:41 +0000 (11:41 +0200)]
rrdtool plugin: Correctly free the cache when shutting down.
Florian Forster [Mon, 5 Apr 2010 14:32:45 +0000 (16:32 +0200)]
network plugin: Be more strict when checking the return value of "setsockopt".
Florian Forster [Mon, 5 Apr 2010 12:09:39 +0000 (14:09 +0200)]
README: Fix a typo.
Florian Forster [Wed, 31 Mar 2010 13:16:32 +0000 (15:16 +0200)]
Merge commit 'tokkee/sh/collectd-4.8' into collectd-4.8
Florian Forster [Wed, 31 Mar 2010 07:06:13 +0000 (09:06 +0200)]
collectd.conf.in: Change the basename of the Perl plugin to "Collectd::Plugins".
Florian Forster [Wed, 31 Mar 2010 07:01:05 +0000 (09:01 +0200)]
collectd-perl(5): Fix the synopsis.
I think this is a left-over from a switch from "Collectd::Plugin" to
"Collectd::Plugins". Thanks to Denis Yagofarov for reporting the bug and
Michael Shigorin for relaying it to me.
Sebastian Harl [Fri, 26 Mar 2010 12:11:50 +0000 (13:11 +0100)]
configure, src/Makefile: Check for nanosleep() in libposix4 as well.
On, e.g., Solaris 2.6, nanosleep() is only available from that library.
Thanks to Vincent McIntyre for reporting this and providing an initial patch.
Florian Forster [Thu, 25 Mar 2010 07:09:57 +0000 (08:09 +0100)]
README: Fix typo.
Florian Forster [Thu, 25 Mar 2010 06:57:58 +0000 (07:57 +0100)]
README: Fix typo.
Florian Forster [Wed, 24 Mar 2010 15:37:53 +0000 (16:37 +0100)]
snmp plugin: Fix a format string.
Florian Forster [Mon, 22 Mar 2010 18:22:02 +0000 (19:22 +0100)]
openvpn plugin: Fix a copy'n'paste error in the "new naming schema".
Florian Forster [Mon, 22 Mar 2010 18:20:25 +0000 (19:20 +0100)]
collectd.conf(5): Document the "ImprovedNamingSchema" option of the OpenVPN plugin.
Florian Forster [Wed, 17 Mar 2010 18:12:53 +0000 (19:12 +0100)]
netapp plugin: Fix a syntax error in an error message.
Thanks to facade from IRC for the hint.
Florian Forster [Mon, 15 Mar 2010 21:40:45 +0000 (22:40 +0100)]
Merge branch 'collectd-4.8' into collectd-4.9
Conflicts:
src/exec.c
Florian Forster [Mon, 15 Mar 2010 21:03:14 +0000 (22:03 +0100)]
Exec plugin: Update copyright header.
Florian Forster [Wed, 3 Mar 2010 14:44:11 +0000 (15:44 +0100)]
configfile: cf_read_dir: Don't abort reading a directory when reading one file fails.
Clément Stenac [Sat, 27 Feb 2010 20:22:47 +0000 (21:22 +0100)]
Processes plugin: Fix a minor typo.
Florian Forster [Tue, 9 Mar 2010 17:51:08 +0000 (18:51 +0100)]
Exec plugin: Add a missing folding marker.
Florian Forster [Tue, 9 Mar 2010 17:50:55 +0000 (18:50 +0100)]
Exec plugin: Set the "noreturn" attribute on the "exec_child" function.
Florian Forster [Tue, 9 Mar 2010 17:50:32 +0000 (18:50 +0100)]
Exec plugin: Reset the "PL_RUNNING" if "fork_child()" fails.
Jan Engelhardt [Tue, 16 Feb 2010 20:16:47 +0000 (21:16 +0100)]
libiptc: avoid strict-aliasing warnings
libiptc: avoid strict-aliasing warnings
In file included from libiptc/libip4tc.c:117:0:
libiptc/libiptc.c: In function ‘__iptcc_p_del_policy’:
libiptc/libiptc.c:826:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules
libiptc/libiptc.c: In function ‘iptc_get_target’:
libiptc/libiptc.c:1650:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules
libiptc/libip4tc.c: In function ‘dump_entry’:
libiptc/libip4tc.c:157:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules
CC libiptc/libip6tc.lo
In file included from libiptc/libip6tc.c:112:0:
libiptc/libiptc.c: In function ‘__iptcc_p_del_policy’:
libiptc/libiptc.c:826:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules
libiptc/libiptc.c: In function ‘ip6tc_get_target’:
libiptc/libiptc.c:1650:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules
libiptc/libip6tc.c: In function ‘dump_entry’:
libiptc/libip6tc.c:188:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Rebased for collectd/src/owniptc: Alan Pevec <apevec@gmail.com>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>
Florian Forster [Tue, 9 Mar 2010 15:55:20 +0000 (16:55 +0100)]
Merge remote branch 'origin/collectd-4.8' into collectd-4.8
Manuel Sanmartin (no email) [Tue, 9 Mar 2010 15:12:51 +0000 (16:12 +0100)]
configure.in: Check for "htonll".
The first patch adds support to check if the htonl and htonll functions
(which are used in AIX port) are available in configure. Until now the
AIX port used these functions without perform any existence test.
Signed-off-by: Florian Forster <octo@leeloo.lan.home.verplant.org>
Manuel Sanmartin (no email) [Tue, 9 Mar 2010 14:40:00 +0000 (15:40 +0100)]
memcached plugin: Add hack for AIX compatibility.
The second one port memcached plugin to AIX. Since AIX don't have
MSG_DONTWAIT flag support, we use MSG_NONBLOCK... and we hope to work
fine ever :)
Signed-off-by: Florian Forster <octo@leeloo.lan.home.verplant.org>
Florian Forster [Wed, 3 Mar 2010 13:01:30 +0000 (14:01 +0100)]
oracle plugin: Fix semantics of OCIAttrGet.
Apparently it returns success if it could fetch the parameter value and
doesn't interpret the value itself. So returning NULL when querying for
OCI_ATTR_SERVER_STATUS does not result in an error. Handle this as a
lost connection.
Thanks to Sven for pointing this out :)
Sebastian Harl [Thu, 25 Feb 2010 23:31:51 +0000 (00:31 +0100)]
.mailmap: Added Rodolphe Quiedeville <rquiedeville@bearstech.com>.
His name was mis-spelled in one commit as Rodolphe Quiedeville*l*.
Florian Forster [Thu, 25 Feb 2010 22:55:25 +0000 (23:55 +0100)]
Merge branch 'collectd-4.8' into collectd-4.9
Conflicts:
src/ping.c
Stu Hood [Thu, 25 Feb 2010 21:40:53 +0000 (22:40 +0100)]
contrib/redhat/collectd.spec: Updated for version 4.9.
I've attached a patch for the RPM specfile to allow it to build collectd 4.9.0,
including Java support.
Florian Forster [Thu, 11 Feb 2010 13:03:38 +0000 (14:03 +0100)]
debian/: Removed ancient Debian package files.
You might want to look at git://git.tokkee.org/pkg-collectd.git instead.
Florian Forster [Wed, 10 Feb 2010 14:24:23 +0000 (15:24 +0100)]
configure.in: Fix three small typos.
Amit Gupta [Wed, 10 Feb 2010 13:37:36 +0000 (14:37 +0100)]
Build system: Put Java class files into a .jar file.
Hi,
I was wondering why the java plugin api class files are published under
share/collectd/java. Ideally, a java-plugin.jar file containing all the class
files should get published rather than the individual class files.
Additionally, the jar files IMO should get published to the lib directory where
the so files are sitting rather than the share directory.
Same holds true for jmx class files as well (probably jmx.jar?).
I could work on this if everyone is okay with it.
Regards
Amit
Florian Forster [Wed, 10 Feb 2010 13:01:37 +0000 (14:01 +0100)]
src/utils_cmd_listval.c: Fix a memory leak.
Thanks to Peter Warasin for figuring this out. His "garbage collector" patch
may replace this solution in future versions of collectd.
Michael Stapelberg [Sat, 6 Feb 2010 15:10:33 +0000 (16:10 +0100)]
Bugfix: correctly handle spurious wakeups in pthread_cond_timedwait
This fixes problems storing data in rrd files on NetBSD 5.0 with more
than one CPU.
Signed-off-by: Florian Forster <octo@huhu.verplant.org>