Base time API upon std::chrono

This should not change the behaviour of KLEE and mimics the old API.

- functions moved from util into time namespace
- uses time points and time spans instead of double
- CLI arguments now have the form "3h5min8us"

Changed command line parameters:
- batch-time (double to string)
- istats-write-interval (double to string)
- max-instruction-time (double to string)
- max-solver-time (double to string)
- max-time (double to string)
- min-query-time-to-log (double to string)
- seed-time (double to string)
- stats-write-interval (double to string)
- uncovered-update-interval (double to string)
- added: log-timed-out-queries (replaces negative max-solver-time)

1 files changed, 7 insertions, 4 deletions

diff --git a/lib/Core/Executor.h b/lib/Core/Executor.h
index 3643c3f4..180c9140 100644
--- a/lib/Core/Executor.h
+++ b/lib/Core/Executor.h
@@ -20,6 +20,7 @@
 #include "klee/Internal/Module/Cell.h"
 #include "klee/Internal/Module/KInstruction.h"
 #include "klee/Internal/Module/KModule.h"
+#include "klee/Internal/System/Time.h"
 #include "klee/util/ArrayCache.h"
 #include "llvm/Support/raw_ostream.h"
 
@@ -216,7 +217,10 @@ private:
 
   /// The maximum time to allow for a single core solver query.
   /// (e.g. for a single STP query)
-  double coreSolverTimeout;
+  time::Span coreSolverTimeout;
+
+  /// Maximum time to allow for a single instruction.
+  time::Span maxInstructionTime;
 
   /// Assumes ownership of the created array objects
   ArrayCache arrayCache;
@@ -461,11 +465,10 @@ private:
   ///
   /// \param timer The timer object to run on firings.
   /// \param rate The approximate delay (in seconds) between firings.
-  void addTimer(Timer *timer, double rate);
+  void addTimer(Timer *timer, time::Span rate);
 
   void initTimers();
-  void processTimers(ExecutionState *current,
-                     double maxInstTime);
+  void processTimers(ExecutionState *current, time::Span maxInstTime);
   void checkMemoryUsage();
   void printDebugInstructions(ExecutionState &state);
   void doDumpStates();