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27 Commits
Author SHA1 Message Date
Ondřej SurýandDiego Fronza e50abe8a70 Cleanup the isc_stats code 2019-12-04 19:39:57 -03:00
Diego Fronza 8680c367cd Fix tcp-higwater stats for some specific platforms 
The previous code had some errors that would be triggered on platforms
without stdatomics but with support for xadd assembly instruction.

The major error was combining two uint32_t values from the
multifield atomic structure using a logical AND '&&' instead of a
bitwise OR '|'.

Some preprocessor rules were redundant and thus were simplified,
regarding the definition of ISC_STATS_USEMULTIFIELDS macro.

Correctly changed rwlock type to read on isc_stats_get_counter.
 2019-12-04 19:39:56 -03:00
Ondřej Surý e8bf3c60f2 Avoid an extra atomic_load() call 2019-11-06 12:54:40 +01:00
Diego FronzaandOndřej Surý 4ad2ab54cd Added TCP high-water statistics variable 
This variable will report the maximum number of simultaneous tcp clients
that BIND has served while running.

It can be verified by running rndc status, then inspect "tcp high-water:
count", or by generating statistics file, rndc stats, then inspect the
line with "TCP connection high-water" text.

The tcp-highwater variable is atomically updated based on an existing
tcp-quota system handled in ns/client.c.

(cherry picked from commit 66fe8627de)
 2019-11-06 12:54:40 +01:00
Diego FronzaandOndřej Surý 5a9c5166ce Add functions for collecting high-water counters 
Add {isc,ns}_stats_{update_if_greater,get_counter}() functions that
are used to set and collect high-water type of statistics.

(cherry picked from commit a544e2e300)
 2019-11-06 12:35:33 +01:00
Ondřej Surý 4892b52156 Fix the stdatomic #ifdefs to work with older compilers 2018-12-21 09:29:47 +01:00
Ondřej Surý 9000f73ba3 Properly use ATOMIC_*_LOCK_FREE preprocessor constants 
The ATOMIC_*_LOCK_FREE can evalutate either 0, 1, or 2 which indicate the
lock-free property of the corresponding atomic types (both signed and unsigned).

	Value	Explanation
	-----	--------------------------------------
	  0	The atomic type is never lock-free
	  1	The atomic type is sometimes lock-free
	  2	The atomic type is always lock-free
	-----	--------------------------------------

(cherry picked from commit a5e7901eb9)
 2018-11-09 05:00:32 +07:00
Ondřej Surý b92a1791b3 Use isc/stdatomic.h to switch to __atomic builtins when compiling in C++ mode 2018-09-07 16:55:22 +02:00
Ondřej Surý aaa76dc654 Replace custom isc_u?intNN_t types with C99 u?intNN_t types 
(cherry picked from commit cb6a185c69)
(cherry picked from commit d61e6a3111)
 2018-08-10 15:20:57 +02:00
Ondřej Surý 188526f41c Remove $Id markers, Principal Author and Reviewed tags from the full source tree 
(cherry picked from commit 55a10b7acd)
 2018-05-11 14:25:15 +02:00
Evan Hunt 8b205089b7 update file headers to remove copyright years 2018-03-14 16:40:20 -07:00
Tinderbox User 8688e7005a update copyright notice / whitespace 2017-09-19 23:47:50 +00:00
Mukund Sivaraman 9905606390 Use C11's stdatomic.h instead of isc_atomic where available 
(cherry picked from commit 404c9b1c53)
 2017-09-19 15:49:21 +05:30
Mark Andrews 0c27b3fe77 4401. [misc] Change LICENSE to MPL 2.0. 2016-06-27 14:56:38 +10:00
Evan Hunt 821ff5e8fa [master] isc_atomic_storeq()/stats improvements 
4248.	[func]		Add an isc_atomic_storeq() function, use it in
			stats counters to improve performance.
			[RT #39972] [RT #39979]
 2015-10-28 22:19:18 -07:00
Tinderbox User 3d787a1213 update copyright notice / whitespace 2015-03-02 23:45:21 +00:00
Mukund Sivaraman 10dd5f62f2 Add support for Valgrind's helgrind tool (#38706) 
Also fix one locking issue that helgrind found: Maintain stats->lock
while stats->reference is used.
 2015-03-02 13:42:20 +05:30
Tinderbox User 431a83fb29 update copyright notice 2014-01-09 23:46:35 +00:00
Evan Hunt e851ea8260 [master] replace memcpy() with memmove(). 
3698.	[cleanup]	Replaced all uses of memcpy() with memmove().
			[RT #35120]
 2014-01-08 16:39:05 -08:00
Mark Andrews 2bdfb330af update copyrights 2013-12-05 15:04:53 +11:00
Mark Andrews c3c8823fed 3681. [port] Update the Windows build system to support feature 
selection and WIN64 builds.  This is a work in
                        progress. [RT #34160]
 2013-12-04 12:47:23 +11:00
Tinderbox User 633c5dc507 update copyright notice 2012-05-14 23:45:48 +00:00
Evan Hunt dd2a0a6d2d Merge statistics code (ATT SoW, rt24117) 
This includes the following changes:

3326.	[func]		Added task list statistics: task model, worker
			threads, quantum, tasks running, tasks ready.
			[RT #27678]

3325.	[func]		Report cache statistics: memory use, number of
			nodes, number of hash buckets, hit and miss counts.
			[RT #27056]

3324.	[test]		Add better tests for ADB stats [RT #27057]

3323.	[func]		Report the number of buckets the resolver is using.
			[RT #27020]

3322.	[func]		Monitor the number of active TCP and UDP dispatches.
			[RT #27055]

3321.	[func]		Monitor the number of recursive fetches and the
			number of open sockets, and report these values in
			the statistics channel. [RT #27054]

3320.	[func]		Added support for monitoring of recursing client
			count. [RT #27009]

3319.	[func]		Added support for monitoring of ADB entry count and
			hash size. [RT #27057]
 2012-05-14 10:06:05 -07:00
Tinderbox User 5fa46bc916 update copyright notice 2012-03-10 23:45:53 +00:00
Mark Andrews 28a8f5b0de set $Id$ 2012-03-08 00:21:15 +11:00
Automatic Updater 39a8abdb83 update copyright notice 2009-01-27 23:47:54 +00:00
Tatuya JINMEI 神明達哉 d9059b0c38 2537. [func] Added more statistics counters including those on socket 
I/O events and query RTT histograms.  [RT #18802]
 2009-01-27 22:30:00 +00:00