Consolidate the non-canonical epoch timers, like cpuid and Win32's

QueryPerformanceCounter, into an entropy source hres_timer. Its
results, if any, do not count as contributing entropy to the poll.

Convert the other (monotonic/fixed epoch) timers to a single function
get_nanoseconds_clock(), living in time.h, which statically chooses
the 'best' timer type (clock_gettime, gettimeofday, std::clock, in
that order depending on what is available). Add feature test macros
for clock_gettime and gettimeofday.

Remove the Timer class and timer.h. Remove the Timer& argument to the
algorithm benchmark function.

1 files changed, 0 insertions, 25 deletions

diff --git a/src/benchmark/benchmark.h b/src/benchmark/benchmark.h
index 1b2730105..9c4e410f1 100644
--- a/src/benchmark/benchmark.h
+++ b/src/benchmark/benchmark.h
@@ -9,40 +9,16 @@
 #define BOTAN_RUNTIME_BENCHMARK_H__
 
 #include <botan/algo_factory.h>
-#include <botan/timer.h>
 #include <botan/rng.h>
 #include <map>
 #include <string>
 
-/**
-* Choose some sort of default timer implementation to use, since some
-* (like hardware tick counters and current Win32 timer) are not
-* reliable for benchmarking.
-*/
-#if defined(BOTAN_HAS_TIMER_POSIX)
-  #include <botan/tm_posix.h>
-#elif defined(BOTAN_HAS_TIMER_UNIX)
-  #include <botan/tm_unix.h>
-#endif
-
 namespace Botan {
 
-#if defined(BOTAN_HAS_TIMER_POSIX)
-  typedef POSIX_Timer Default_Benchmark_Timer;
-#elif defined(BOTAN_HAS_TIMER_UNIX)
-  typedef Unix_Timer Default_Benchmark_Timer;
-#else
-   /* I have not had good success using clock(), the results seem
-    * pretty bogus, but as a last resort it works.
-    */
-  typedef ANSI_Clock_Timer Default_Benchmark_Timer;
-#endif
-
 /**
 * Algorithm benchmark
 * @param name the name of the algorithm to test (cipher, hash, or MAC)
 * @param milliseconds total time for the benchmark to run
-* @param timer the timer to use
 * @param rng the rng to use to generate random inputs
 * @param af the algorithm factory used to create objects
 * @return results a map from provider to speed in mebibytes per second
@@ -50,7 +26,6 @@ namespace Botan {
 std::map<std::string, double>
 BOTAN_DLL algorithm_benchmark(const std::string& name,
                               u32bit milliseconds,
-                              Timer& timer,
                               RandomNumberGenerator& rng,
                               Algorithm_Factory& af);