twn_util_c.h: profile_list_stats() for average summary, without spam in console

src/twn_loop.c

@@ -788,6 +788,8 @@ int enter_loop(int argc, char **argv) {
         main_loop();
     }
 
+    profile_list_stats();
+
     /* loop is over */
     game_object_unload();
 

src/twn_util.c

@@ -12,7 +12,9 @@
 static struct ProfileItem {
     char const *key;
     struct Profile {
-        uint64_t tick;
+        uint64_t tick_start;
+        uint64_t tick_accum;
+        uint64_t sample_count;
     } value;
 } *profiles;
 
@@ -298,7 +300,19 @@ char *expand_asterisk(const char *mask, const char *to) {
 
 
 void profile_start(char profile[const static 1]) {
-    shput(profiles, profile, (struct Profile){ .tick = SDL_GetPerformanceCounter() });
+    uint64_t tick_accum = 0, sample_count = 0;
+
+    struct ProfileItem const *p = shgetp_null(profiles, profile);
+    if (p) {
+        tick_accum = p->value.tick_accum;
+        sample_count = p->value.sample_count;
+    }
+
+    shput(profiles, profile, ((struct Profile) {
+            .tick_start = SDL_GetPerformanceCounter(),
+            .tick_accum = tick_accum,
+            .sample_count = sample_count,
+    }));
 }
 
 
@@ -308,6 +322,18 @@ void profile_end(char profile[const static 1]) {
         log_warn("profile %s wasn't started!", profile);
         return;
     }
-    log_info("profile '%s' took: %fsec", profile, (double)(SDL_GetPerformanceCounter() - p->value.tick) / (double)(SDL_GetPerformanceFrequency()));
-    shdel(profiles, profile);
+
+    p->value.sample_count++;
+    p->value.tick_accum += SDL_GetPerformanceCounter() - p->value.tick_start;
+}
+
+
+void profile_list_stats(void) {
+    for (size_t i = 0; i < shlenu(profiles); ++i) {
+        log_info("profile '%s' on average took: %f seconds",
+                 profiles[i].key,
+                 (double)profiles[i].value.tick_accum /
+                    (double)profiles[i].value.sample_count /
+                    (double)(SDL_GetPerformanceFrequency()));
+    }
 }

src/twn_util_c.h

@@ -25,6 +25,7 @@ char *expand_asterisk(const char *mask, const char *to);
 
 void profile_start(char profile[const static 1]);
 void profile_end(char profile[const static 1]);
+void profile_list_stats(void);
 
 /* http://www.azillionmonkeys.com/qed/sqroot.html */
 static inline float fast_sqrt(float x)