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Always wrap the log on worker process startup.

Detect such wraps in libvarnishapi



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4914 d4fa192b-c00b-0410-8231-f00ffab90ce4

Handle shmlog in 32bit byte aligned words, that saves wear and tear
on cpu write combining and makes things a bit faster.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4913 d4fa192b-c00b-0410-8231-f00ffab90ce4

with inline assembler.

I cannot possibly express the magnitude of this particular POSIX FAIL!


git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4912 d4fa192b-c00b-0410-8231-f00ffab90ce4

applicable and can be implemented more efficiently this way.

The new syntax is an expansion of the old, which allows
"class.ident.name" or just "name" patterns to be specified.

A pattern which starts with '^' excludes the matching fields,
otherwise the pattern includes them.

If the first pattern is an exclude pattern, all fields start
out included, and vice versa.

Notice that "class" and "ident" fields always must have their
trailing '.' even if they are empty.

Each subcomponent can have a '*' suffix, which will ("glob") match
anything.

Multiple "-f" arguments can be given, they will be concatenated.

All patterns will be tested sequentially, and the last one that
matches determines the result.

Example:

	-f "SMA..sma_nreq,^SMA.ba*." -f "shm_*"

This will return:
	SMA.storage_0.sma_nreq
	shm_records
	shm_writes
	...

but not:
	SMA.storage_0.sma_nobj
	SMA.bar.sma_nreq
	sms_nreq
	...




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is faster, more handy and easier to extend in the future.



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restarted.



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Rewrite -1 and -x handing to use new VSL_IterStat() support.



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dynamically allocated such.



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(It should be readily possible to access the shmlog using just libvarnishapi,
but for some of or more advanced support programs, we will use the smart
stuff in libvarnish to improve code quality)



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