Feat: run multiple benchmarking cycles

Implementierung/lib/helper.h

@@ -38,13 +38,14 @@ enum argumentParseResult parseArguments(int argc, char** argv,
 /**
  * @brief Run an md2_hash_func with benchmark timing
  *
+ * @param cycles the number of cycles to execute
  * @param func the function to run
  * @param len the lenght of buf
  * @param buf the data to hash
  * @param out the target array for the hash
  * @return double
  */
-double run_benchmark(md2_hash_func func, size_t len, uint8_t* buf,
-                     uint8_t* out);
+double run_benchmark(unsigned cycles, md2_hash_func func, size_t len,
+                     uint8_t* buf, uint8_t* out);
 
 #endif  // HELPER_H

Implementierung/src/helper.c

@@ -93,10 +93,12 @@ double current_time(void) {
   return t.tv_sec + t.tv_nsec * 1e-9;
 }
 
-double run_benchmark(md2_hash_func func, size_t len, uint8_t *buf,
-                     uint8_t *out) {
+double run_benchmark(unsigned cycles, md2_hash_func func, size_t len,
+                     uint8_t *buf, uint8_t *out) {
   double start = current_time();
-  func(len, buf, out);
+  for (; cycles > 0; cycles--) {
+    func(len, buf, out);
+  }
   double end = current_time();
 
   return end - start;

Implementierung/src/main.c

@@ -8,7 +8,7 @@
 static bool runTest(const char* message, const char* expectedHash) {
   uint8_t out[16];
   double duration =
-      run_benchmark(md2_hash, strlen(message), (uint8_t*)message, out);
+      run_benchmark(1, md2_hash, strlen(message), (uint8_t*)message, out);
 
   char hash[32];
   md2_encode_hash(out, hash);
@@ -86,13 +86,17 @@ int main(int argc, char** argv) {
   printf("\n");
 
   uint8_t out[16];
-  double duration = run_benchmark(md2_hash, len, data, out);
-
-  printf("Hash: ");
   char hash[32];
+  if (c.doBenchmark) {
+    double duration =
+        run_benchmark(c.benchmarkingCycles, md2_hash, len, data, out);
+    printf("Running %d cycles took %f seconds\n", c.benchmarkingCycles,
+           duration);
+  } else {
+    md2_hash(len, data, out);
+  }
   md2_encode_hash(out, hash);
-
-  printf("%s, took: %f\n", hash, duration);
+  printf("Hash: %s\n", hash);
 
   free(data);