From 78078c3598737d910375759925fdfccc7b68b8e1 Mon Sep 17 00:00:00 2001
From: o9000 <mrovi9000@gmail.com>
Date: Sat, 8 Oct 2016 15:36:01 +0200
Subject: [PATCH] Add profiling code to 0.11

---
 src/tint.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 49 insertions(+), 2 deletions(-)

diff --git a/src/tint.c b/src/tint.c
index 4d9e6b8..b342d3b 100644
--- a/src/tint.c
+++ b/src/tint.c
@@ -30,6 +30,8 @@
 #include <X11/extensions/Xdamage.h>
 #include <Imlib2.h>
 #include <signal.h>
+#include <time.h>
+#include <sys/time.h>
 
 #ifdef HAVE_SN
 #include <libsn/sn.h>
@@ -57,6 +59,7 @@ Atom dnd_selection;
 Atom dnd_atom;
 int dnd_sent_request;
 char *dnd_launcher_exec;
+gboolean debug_fps = FALSE;
 
 void signal_handler(int sig)
 {
@@ -123,6 +126,7 @@ void init (int argc, char *argv[])
 //	sigaddset(&block_mask, SIGHUP);
 //	sigaddset(&block_mask, SIGUSR1);
 //	sigprocmask(SIG_BLOCK, &block_mask, 0);
+	debug_fps = getenv("DEBUG_FPS") != NULL;
 }
 
 #ifdef HAVE_SN
@@ -998,7 +1002,7 @@ void dnd_drop(XClientMessageEvent *e)
 		//The source is sending anyway, despite instructions to the contrary.
 		//So reply that we're not interested.
 		XClientMessageEvent m;
-		memset(&m, sizeof(m), 0);
+		memset(&m, 0, sizeof(m));
 		m.type = ClientMessage;
 		m.display = e->display;
 		m.window = e->data.l[0];
@@ -1011,6 +1015,19 @@ void dnd_drop(XClientMessageEvent *e)
 	}
 }
 
+double get_time()
+{
+	struct timespec cur_time;
+	clock_gettime(CLOCK_MONOTONIC, &cur_time);
+	return cur_time.tv_sec + cur_time.tv_nsec * 1.0e-9;
+}
+
+#define GREEN "\033[1;32m"
+#define YELLOW "\033[1;33m"
+#define RED "\033[1;31m"
+#define BLUE "\033[1;34m"
+#define RESET "\033[0m"
+
 int main (int argc, char *argv[])
 {
 	XEvent e;
@@ -1061,8 +1078,15 @@ start:
 //	sigset_t empty_mask;
 //	sigemptyset(&empty_mask);
 
+	double ts_event_read = 0;
+	double ts_event_processed = 0;
+	double ts_render_finished = 0;
+	double ts_flush_finished = 0;
+	double fps_sum = 0, fps_count = 0;
 	while (1) {
 		if (panel_refresh) {
+			if (debug_fps)
+				ts_event_processed = get_time();
 			panel_refresh = 0;
 
 			for (i=0 ; i < nb_panel ; i++) {
@@ -1089,6 +1113,26 @@ start:
 				// force icon's refresh
 				refresh_systray_icon();
 			}
+
+			if (debug_fps)
+				ts_render_finished = get_time();
+			if (debug_fps && ts_event_read > 0) {
+				ts_flush_finished = get_time();
+				double period = ts_flush_finished - ts_event_read;
+				double fps = 1.0 / period;
+				double proc_ratio = (ts_event_processed - ts_event_read) / period;
+				double render_ratio = (ts_render_finished - ts_event_processed) / period;
+				double flush_ratio = (ts_flush_finished - ts_render_finished) / period;
+				fps_sum += fps;
+				fps_count += 1;
+				fprintf(stderr,
+				        BLUE "fps = %.0f (avg %.0f) : processing %.0f%%, rendering %.0f%%, flushing %.0f%%" RESET "\n",
+				        fps,
+				        fps_sum / fps_count,
+				        proc_ratio * 100,
+				        render_ratio * 100,
+				        flush_ratio * 100);
+			}
 		}
 
 		// thanks to AngryLlama for the timer
@@ -1102,9 +1146,12 @@ start:
 			timeout = 0;
 
 		// Wait for X Event or a Timer
+		ts_event_read = 0;
 		if (select(x11_fd+1, &fdset, 0, 0, timeout) > 0) {
 			while (XPending (server.dsp)) {
 				XNextEvent(server.dsp, &e);
+				if (debug_fps)
+					ts_event_read = get_time();
 #if HAVE_SN
 				sn_display_process_event (server.sn_dsp, &e);
 #endif // HAVE_SN
@@ -1304,7 +1351,7 @@ start:
 
 									// Reply OK.
 									XClientMessageEvent m;
-									memset(&m, sizeof(m), 0);
+									memset(&m, 0, sizeof(m));
 									m.type = ClientMessage;
 									m.display = server.dsp;
 									m.window = dnd_source_window;