Removed getting of some data we didn't really need or use. Updated page_stats to work with linux. Fixed tools.h to compile nicely :)
Added get_page_stats_diff() which returns the number of pages in/out etc since last time it was called, and the time difference since last time it was called. This makes it very easy for a host to know how many pages averaged over a period of time.
Finished page stats. It returns 2 things. One, number of pages swapped in and out, 2, the number of pageins and pageouts. As to if this is actually correct or not, im not 100% sure, but tests seem to imply it is. from: http://www.sun.com/sun-on-net/itworld/UIR960901perf.html ulong pgin; /* pageins */ ulong pgpgin; /* pages paged in */ ulong pgout; /* pageouts */ ulong pgpgout; /* pages paged out */ ulong swapin; /* swapins */ ulong pgswapin; /* pages swapped in */ ulong swapout; /* swapouts I am *not* using swapins and swapouts. I did this in the orginal libstatgrab, and it didn't work. Looking at it more closely, it always seems to have 0 in it, so my guess is its broke. :)
The new revesion of libstatgrab, which is a complete rewrite essentially. Firstly the data is now returned in structures rather than xml strings. The structures returned are all static, so what ever calls the library doesn't have to deal with the memory management of it. Secondly the general efficency of the code is now significantly faster. It no longer needs to fork a process, connect file descriptors and run ps, and then parse the output like it used to. Now it walks /proc and reads it into the correct data structures. This works without needing any special privilages, so it can still run as a normal mortal without needing any special group. (Freebsd will be an exception to this, but this commit only works with solaris, and that requires nothing special) Thridly it has more functionality than it used to. It not for instance is capable of showing network traffic stats, (although its not completely finished yet). It also in the near future be able to disk io stats as well. Several bug fixes have been aplied over the original version. For example the cpu_stats used to only reply the stats for the first processor. This now will report the total stats of all of them. Paging stats will also be fixed, but haven't been done yet.
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