benchmark function improvements

tests/bench.c

@@ -59,6 +59,11 @@ void bench_print_summary(bench *b) {
     printf("%.2f i/sec\n", bench_iteration_speed(b) );
 }
 
+/**
+ * Combine multiple benchmark result into one measure entry.
+ *
+ * bench_append_csv("benchmark.csv", 3, &b1, &b2)
+ */
 void bench_append_csv(char *filename, int countOfB, ...) {
     FILE *fp = fopen(filename, "a+");
     if(!fp) {

tests/bench.h

@@ -14,7 +14,6 @@
 #define SEC_IN_MIN 60
 #define NUL  '\0'
 
-
 typedef struct {
     long N; // N for each run
     long R; // runs
@@ -41,6 +40,7 @@ void bench_append_csv(char *filename, int countOfB, ...);
 
 #define BENCHMARK(B) \
         bench B; B.N = 5000000; B.R = 3; \
+        printf("Benchmarking " #B "...\n"); \
         bench_start(&B); \
         for (int _r = 0; _r < B.R ; _r++ ) { \
             for (int _i = 0; _i < B.N ; _i++ ) {
@@ -52,10 +52,8 @@ void bench_append_csv(char *filename, int countOfB, ...);
 
 #define BENCHMARK_SUMMARY(B) bench_print_summary(&B);
 
-#define BENCHMARK_RECORD_CSV(B,filename) \
-    FILE *fp = fopen(filename, "a+"); \
-    fprintf(fp, "%ld,%.2f\n", unixtime(), (B.N * B.R) / (B.end - B.start)); \
-    fclose(fp);
+#define BENCHMARK_RECORD_CSV(filename, countOfB, ...) \
+    bench_append_csv(filename, countOfB, __VA_ARGS__)
 
 
 #endif /* !BENCH_H */

tests/check_tree.c

@@ -717,13 +717,12 @@ r3_tree_insert_path(n, "/garply/grault/corge",  NULL);
     ck_assert_int_eq( *((int*) m->data), 999 );
 
 
-    printf("Benchmarking...\n");
     BENCHMARK(string_dispatch)
     r3_tree_matchl(n , "/qux/bar/corge", strlen("/qux/bar/corge"), NULL);
     END_BENCHMARK(string_dispatch)
-
     BENCHMARK_SUMMARY(string_dispatch);
-    BENCHMARK_RECORD_CSV(string_dispatch, "bench_str.csv")
+
+    BENCHMARK_RECORD_CSV("bench_str.csv", 1, &string_dispatch);
 }
 END_TEST