From 20921d5a47e2b0336a03cf881cdd857201177607 Mon Sep 17 00:00:00 2001
From: Mitya Selivanov <automainint@guattari.tech>
Date: Tue, 26 Sep 2023 02:23:23 +0200
Subject: profiler

---
 source/saw/_exe.c     |  1 +
 source/saw/main.c     | 29 ++---------------------------
 source/saw/profiler.c | 30 ++++++++++++++++++++++++++++++
 source/saw/profiler.h |  8 ++++++++
 4 files changed, 41 insertions(+), 27 deletions(-)
 create mode 100644 source/saw/profiler.c
 create mode 100644 source/saw/profiler.h

diff --git a/source/saw/_exe.c b/source/saw/_exe.c
index 721afb9..7b6c1f7 100644
--- a/source/saw/_exe.c
+++ b/source/saw/_exe.c
@@ -1,2 +1,3 @@
 #include "_lib.c"
 #include "main.c"
+#include "profiler.c"
diff --git a/source/saw/main.c b/source/saw/main.c
index 89e899e..298eb2a 100644
--- a/source/saw/main.c
+++ b/source/saw/main.c
@@ -3,6 +3,8 @@
 //  - Custom OpenGL loader.
 //
 
+#include "profiler.h"
+
 #include "../kit/math.h"
 #include "../kit/time.h"
 
@@ -34,8 +36,6 @@ enum {
 static struct NVGcontext *saw_nvg;
 static ma_device          saw_ma;
 
-static i64 saw_time = 0;
-
 static i32 saw_mouse_x       = 0;
 static i32 saw_mouse_y       = 0;
 static i8  saw_lbutton_click = 0;
@@ -57,21 +57,6 @@ static i8  saw_pianoroll_turned_off[PIANOROLL_SIZE] = { 0 };
 #  pragma GCC            optimize("O3")
 #endif
 
-static i64 time_(void) {
-  struct timespec t;
-  timespec_get(&t, TIME_UTC);
-  return ((i64) t.tv_sec) * 1000 + ((i64) t.tv_nsec) / 1000000;
-}
-
-static void time_frame_(char const *s) {
-  i64 t = time_();
-  if (saw_time == 0)
-    printf("%-20s %lld\n", s, t);
-  else
-    printf("%-20s+%lld\n", s, t - saw_time);
-  saw_time = t;
-}
-
 static f64 saw_envelope(f64 t, f64 attack, f64 decay, f64 sustain,
                         f64 duration, f64 release) {
   //  FIXME
@@ -129,8 +114,6 @@ static void saw_audio(ma_device *device, void *void_out_,
 #endif
 
 static void saw_init(void) {
-  time_frame_("saw_init");
-
   sapp_set_window_title("saw");
 
 #ifdef SOKOL_GLCORE33
@@ -139,8 +122,6 @@ static void saw_init(void) {
   saw_nvg = nvgCreateGLES3(NVG_ANTIALIAS | NVG_STENCIL_STROKES);
 #endif
 
-  time_frame_("  ma device config");
-
   ma_device_config config = ma_device_config_init(
       ma_device_type_playback);
 
@@ -150,17 +131,12 @@ static void saw_init(void) {
   config.dataCallback      = saw_audio;
   config.pUserData         = NULL;
 
-  time_frame_("  ma device init");
-
   if (ma_device_init(NULL, &config, &saw_ma) != MA_SUCCESS) {
     printf("ma_device_init failed.\n");
     return;
   }
 
-  time_frame_("  ma start");
   ma_device_start(&saw_ma);
-
-  time_frame_("  done");
 }
 
 static void saw_frame(void) {
@@ -293,7 +269,6 @@ char const *__lsan_default_suppressions() {
 }
 
 sapp_desc sokol_main(int argc, char **argv) {
-  time_frame_("sokol_main");
   return (sapp_desc) {
     .width      = 1280,
     .height     = 720,
diff --git a/source/saw/profiler.c b/source/saw/profiler.c
new file mode 100644
index 0000000..14e6b41
--- /dev/null
+++ b/source/saw/profiler.c
@@ -0,0 +1,30 @@
+#include "../kit/time.h"
+
+#include <stdio.h>
+
+long long profiler_time_;
+
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wunused-function"
+#  pragma GCC diagnostic ignored "-Wunknown-pragmas"
+#  pragma GCC            push_options
+#  pragma GCC            optimize("O3")
+#endif
+
+void profile_frame(char const *s) {
+  struct timespec ts;
+  timespec_get(&ts, TIME_UTC);
+  long long t = ((long long) ts.tv_sec) * 1000 +
+                ((long long) ts.tv_nsec) / 1000000;
+  if (profiler_time_ == 0)
+    printf("%s\n", s);
+  else
+    printf("%-19s+%lld\n", s, t - profiler_time_);
+  profiler_time_ = t;
+}
+
+#ifdef __GNUC__
+#  pragma GCC            pop_options
+#  pragma GCC diagnostic pop
+#endif
diff --git a/source/saw/profiler.h b/source/saw/profiler.h
new file mode 100644
index 0000000..a4e0f9f
--- /dev/null
+++ b/source/saw/profiler.h
@@ -0,0 +1,8 @@
+#ifndef SAW_PROFILER_H
+#define SAW_PROFILER_H
+
+extern long long profiler_time_;
+
+void profile_frame(char const *s);
+
+#endif
-- 
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