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* Remove the 'realname' attribute on all modules and cc/cpu/os info files.lloyd2009-10-295-13/+0
| | | | | Pretty much useless and unused, except for listing the module names in build.h and the short versions totally suffice for that.
* The get_tm function was duplicated. Move single version to timer.{h,cpp}lloyd2009-09-172-1/+17
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* Split up util.h into 3 fileslloyd2009-09-174-3/+5
| | | | | | | - rounding.h (round_up, round_down) - workfactor.h (dl_work_factor) - timer.h (system_time) And update all users of the previous util.h
* Add support for Dragonfly BSD (a fork of FreeBSD).lloyd2009-07-252-0/+2
| | | | Contributed by Patrick Georgi
* Add a script that reads the output of print_deps.py and rewriteslloyd2009-07-151-0/+4
| | | | | | the info.txt files with the right module dependencies. Apply it across the codebase.
* Minor hackery to deal with win32 library dependencieslloyd2009-07-021-1/+1
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* Thomas Moschny passed along a request from the Fedora packagers which camelloyd2009-03-3010-58/+78
| | | | | | | | | | | | | | | up during the Fedora submission review, that each source file include some text about the license. One handy Perl script later and each file now has the line Distributed under the terms of the Botan license after the copyright notices. While I was in there modifying every file anyway, I also stripped out the remainder of the block comments (lots of astericks before and after the text); this is stylistic thing I picked up when I was first learning C++ but in retrospect it is not a good style as the structure makes it harder to modify comments (with the result that comments become fewer, shorter and are less likely to be updated, which are not good things).
* Check in a branch with a major redesign on how entropy polling is performed.lloyd2009-01-272-16/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Combine the fast and slow polls, into a single poll() operation. Instead of being given a buffer to write output into, the EntropySource is passed an Entropy_Accumulator. This handles the RLE encoding that xor_into_buf used to do. It also contains a cached I/O buffer so entropy sources do not individually need to allocate memory for that with each poll. When data is added to the accumulator, the source specifies an estimate of the number of bits of entropy per byte, as a double. This is tracked in the accumulator. Once the estimated entropy hits a target (set by the constructor), the accumulator's member function predicate polling_goal_achieved flips to true. This signals to the PRNG that it can stop performing polling on sources, also polls that take a long time periodically check this flag and return immediately. The Win32 and BeOS entropy sources have been updated, but blindly; testing is needed. The test_es example program has been modified: now it polls twice and outputs the XOR of the two collected results. That helps show if the output is consistent across polls (not a good thing). I have noticed on the Unix entropy source, occasionally there are many 0x00 bytes in the output, which is not optimal. This also needs to be investigated. The RLE is not actually RLE anymore. It works well for non-random inputs (ASCII text, etc), but I noticed that when /dev/random output was fed into it, the output buffer would end up being RR01RR01RR01 where RR is a random byte and 00 is the byte count. The buffer sizing also needs to be examined carefully. It might be useful to choose a prime number for the size to XOR stuff into, to help ensure an even distribution of entropy across the entire buffer space. Or: feed it all into a hash function? This change should (perhaps with further modifications) help WRT the concerns Zack W raised about the RNG on the monotone-dev list.
* Add Doxygen comment for Timer::clock. Fix @return in benchmark.h and x509_ca.hlloyd2008-11-251-0/+4
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* Avoid a potential 32-bit overflow in Timer::combine_timers by promotinglloyd2008-11-211-2/+4
| | | | to 64 bit values before doing multiplication.
* Make Timer a pure virtual interface and add a new subclass ANSI_Clock_Timerlloyd2008-11-212-31/+40
| | | | | which uses the ANSI/ISO clock function (previously this had been the Timer::clock default implementation).
* Add an implementation of name() to Timer. This allows it to belloyd2008-11-121-0/+2
| | | | | | | | | instantiated directly, which seemd a useful thing since a Timer ref must be passed to the benchmark system. However I think due to the low resolution of clock() the results were highly variable. Using gettimeofday or clock_gettime (Unix_Timer, POSIX_Timer) proved more consistent and in sync with what the existing benchmarks show, so use one of those if possible.
* Mention an idea for wall clock sync in Hardware_Timerlloyd2008-11-111-0/+6
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* Move utils/{timer,mutex} to toplevellloyd2008-11-1115-0/+442