Microbenchmarks

1 files changed, 91 insertions, 0 deletions

diff --git a/source/kit_test/bench.h b/source/kit_test/bench.h
new file mode 100644
index 0000000..131d89d
--- /dev/null
+++ b/source/kit_test/bench.h
@@ -0,0 +1,91 @@
+#ifndef KIT_BENCH_BENCH_H
+#define KIT_BENCH_BENCH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "test.h"
+#include <stdint.h>
+
+#ifndef KIT_BENCH_FILE
+#  define KIT_BENCH_FILE kit_bench
+#endif
+
+#ifndef KIT_BENCHS_SIZE_LIMIT
+#  define KIT_BENCHS_SIZE_LIMIT 0x1000
+#endif
+
+#ifndef KIT_BENCH_REPEATS
+#  define KIT_BENCH_REPEATS 400
+#endif
+
+typedef void (*kit_bench_begin_fn)(int bench_index);
+typedef void (*kit_bench_end_fn)(int bench_index);
+typedef void (*kit_bench_run_fn)(
+    int kit_bench_index_, kit_bench_begin_fn kit_bench_begin_fn_,
+    kit_bench_end_fn kit_bench_end_fn_);
+
+typedef struct {
+  char const      *bench_name;
+  char const      *bench_file;
+  kit_bench_run_fn bench_fn;
+  int64_t          sec[KIT_BENCH_REPEATS];
+  int32_t          nsec[KIT_BENCH_REPEATS];
+  int64_t          duration_nsec[KIT_BENCH_REPEATS];
+  int              repeats;
+  int              signal;
+} kit_benchmark_t;
+
+typedef struct {
+  int             size;
+  kit_benchmark_t benchs[KIT_BENCHS_SIZE_LIMIT];
+} kit_benchs_list_t;
+
+extern kit_benchs_list_t kit_benchs_list;
+
+void kit_bench_register(char const *name, char const *file,
+                        kit_bench_run_fn fn);
+
+#define KIT_BENCHMARK(name)                                          \
+  static void KIT_TEST_CONCAT3_(kit_bench_run_, __LINE__,            \
+                                KIT_BENCH_FILE)(                     \
+      int, kit_bench_begin_fn, kit_bench_end_fn);                    \
+  KIT_TEST_ON_START_(                                                \
+      KIT_TEST_CONCAT3_(kit_benchmark_, __LINE__, KIT_BENCH_FILE)) { \
+    kit_bench_register(name, __FILE__,                               \
+                       KIT_TEST_CONCAT3_(kit_bench_run_, __LINE__,   \
+                                         KIT_BENCH_FILE));           \
+  }                                                                  \
+  static void KIT_TEST_CONCAT3_(kit_bench_run_, __LINE__,            \
+                                KIT_BENCH_FILE)(                     \
+      int kit_bench_index_, kit_bench_begin_fn kit_bench_begin_fn_,  \
+      kit_bench_end_fn kit_bench_end_fn_)
+
+#define KIT_BENCHMARK_BEGIN                                          \
+  for (int kit_bench_repeat_ = 0;                                    \
+       kit_bench_repeat_ < KIT_BENCH_REPEATS; kit_bench_repeat_++) { \
+    kit_bench_begin_fn_(kit_bench_index_);                           \
+    {
+
+#define KIT_BENCHMARK_END              \
+  }                                    \
+  kit_bench_end_fn_(kit_bench_index_); \
+  }
+
+int kit_run_benchmarks(int argc, char **argv);
+
+#ifndef KIT_DISABLE_SHORT_NAMES
+#  define BENCHMARK KIT_BENCHMARK
+#  define BENCHMARK_BEGIN KIT_BENCHMARK_BEGIN
+#  define BENCHMARK_END KIT_BENCHMARK_END
+
+#  define bench_register kit_bench_register
+#  define run_benchmarks kit_run_benchmarks
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif