Isolate more stuff in hash_slinger.h.

Remove hash_slinger from cache.h, include in .c's as necessary.

Save a malloc per objhead by putting a few fields into the objhead
for the hash_slingers to use.

Preinitialize the refcount when we precreate the objhead.

Move the hash-string allocation into HSH_Copy(), no point in
duplication of mandatory step.




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Thanks to perbu for suggested documentation
Fixes 355


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storage_file prints the maximum storage size, make malloc do the same,
for consistency.


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Fixed compiling on Linux with -Werror set. Added mising prototypes, removed an unused function and added the ATTRIBUTE_UNUSED to the attribute list for the rb_wrap() macro which generated unused functions.


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in a source-file.

(All the work is done by vcc generated code now)



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gracefully with large number of objects.

Previously we kept all objects in a single array which resultined
in increasingly infrequent but increasingly demanding calls to
calloc(3) with the consequent massive memory copies.  We also did
not release memory again if unused.

Now we stripe the array into rows of 64k objects each.

This number is a compromise between space wastage, max 1MB on a
64bit machine, and the desire to not add and delete rows all the
time.  With 64k objects in a row, even on a very busy server would
only add a new row every 5...10 seconds during ramp up.

Delete unused rows, but keep a hysteresis of an entire empty row
to avoid silly add-delete-add-delete-add-delete behaviour at row
boundaries.

Streamline some of the functions a bit.

Fixes #210




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now that this is no longer possible.



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	set obj.ttl = 0s
means that the object is not hit again by actually using "-1" instead.

This works around the rounding error which otherwise causes the object
to be inside TTL for up to one second - epsilon.



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Fixes #365



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There is no NULL value for pthread_t and you have to call a function
to compare them.



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instead of increasingly unwieldy macros.

Amongst other things, this will make it much easier to do lock
profiling, contest statistics, asserts etc.

This commit is largely mechanically generated and should not result in
any changed functionality.

Locks retain the "mtx" monicker, as a reminder that they are mutexes.

No performance impact expected.


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Fixes #368


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Change the .tcl script corresponding to r3364, fixes build failure


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This will be skipped on platforms where srandom(1) does not result
in the same deterministic sequence of random numbers as on FreeBSD
and Linux.



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srandom(1) and stops the test if we do not get the same sequence
as we expect.

The Open Group does not define which deterministic sequence srandom(1)
should result in, on that it be deterministic, but I have high hopes
in the general sanity and expect that UNIX people across the board
have realized that for portability the same sequence should be
returned on all platforms.

At the very least FreeBSD and Linux/GLIBC, as seen on projects.linpro.no,
agree.



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This is a lot less useful than it could have been, as the Open Group
only mandates that:

	Like rand(), random() shall produce by default a sequence
	of numbers that can be duplicated by calling srandom() with
	1 as the seed.

But crucially leaves out *which* sequence of numbers.



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file.

Unfortunately the thread support in FlexeLint is not quite up to our
standards of creative locking.



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Fixes #362


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The VCL man page documented the capturing parentheses as using $N
rather than \N which is actually used.

Fixes #359


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Move the || true bit of invoking tclsh to the Makefile, since
missing would otherwise not pass the file name to tclsh.

Thanks to des for spotting this.


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Drop the consistency check for health-changes, at the cost of a
slight bias[1] for hosts before, or after, then one that changed health,
according to how its health changed.

Count all failures to pick against the retry count.

Fixes #361


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- Removed the requirement for kernel => 2.6.0. All supported
  platforms meets this, and it generates strange errors in EPEL



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find them.



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