Adding Time Hooks for measuring semantics performance

Author: theo25

bin/llvm-kompile-clang

@@ -263,6 +263,7 @@ if $link; then
     "$LIBDIR"/libcollect.a
     "$LIBDIR"/libmeta.a
     "$LIBDIR"/libjson.a
+    "$LIBDIR"/libtimer.a
   )
 
   components=(

include/runtime/timer.h

@@ -0,0 +1,24 @@
+#ifndef TIMER_H
+#define TIMER_H
+
+#include <chrono>
+
+// Macro to register a new timer.
+// Timers are implemented using the std::chrono::high_resolution_clock.
+// The unit should be one of the duration types provided in std::chrono,
+// e.g. seconds, microseconds, etc.
+#define REGISTER_TIMER(name, unit) \
+  static std::chrono::high_resolution_clock::time_point name ## _clock_start; \
+  static std::chrono::high_resolution_clock::time_point name ## _clock_stop; \
+  void name ## _timer_start() { \
+    name ## _clock_start = std::chrono::high_resolution_clock::now(); \
+  } \
+  void name ## _timer_stop() { \
+    name ## _clock_stop = std::chrono::high_resolution_clock::now(); \
+  } \
+  uint64_t name ## _timer_measurement() { \
+    return std::chrono::duration_cast<std::chrono::unit>( \
+       name ## _clock_stop -  name ## _clock_start).count(); \
+  }
+
+#endif // TIMER_H

runtime/CMakeLists.txt

@@ -19,3 +19,4 @@ add_subdirectory(lto)
 add_subdirectory(meta)
 add_subdirectory(strings)
 add_subdirectory(util)
+add_subdirectory(timer)

runtime/timer/CMakeLists.txt

@@ -0,0 +1,8 @@
+add_library( timer STATIC
+  timer.cpp
+)
+
+install(
+  TARGETS timer
+  ARCHIVE DESTINATION lib/kllvm
+)

runtime/timer/timer.cpp

@@ -0,0 +1,26 @@
+#include "runtime/header.h"
+#include "runtime/timer.h"
+
+#include <fstream>
+
+REGISTER_TIMER(hook, nanoseconds);
+
+extern "C" {
+
+block *hook_TIMER_timerStart(void) {
+  hook_timer_start();
+
+  return dot_k();
+}
+
+block *hook_TIMER_timerStop(void) {
+  hook_timer_stop();
+
+  std::ofstream times_file;
+  times_file.open("hook_times.txt", std::ios_base::app);
+  times_file << hook_timer_measurement() << std::endl;
+
+  return dot_k();
+}
+
+}