From 1364b41dc97fcd3081906d880cf746991e05de9a Mon Sep 17 00:00:00 2001
From: Benno Schulenberg <bensberg@telfort.nl>
Date: Tue, 26 Jan 2021 15:41:02 +0100
Subject: [PATCH] debug: add timing instruments to cache precalculation and
 screen refresh

---
 src/color.c | 11 +++++++++++
 src/winio.c | 10 ++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/color.c b/src/color.c
index bc5c2529..4737b704 100644
--- a/src/color.c
+++ b/src/color.c
@@ -299,6 +299,12 @@ void precalc_multicolorinfo(void)
 					openfile->filetop->multidata || ISSET(NO_SYNTAX))
 		return;
 
+//#define TIMEPRECALC  123
+#ifdef TIMEPRECALC
+#include <time.h>
+	clock_t start = clock();
+#endif
+
 	/* For each line, allocate cache space for the multiline-regex info. */
 	for (line = openfile->filetop; line != NULL; line = line->next)
 		set_up_multicache(line);
@@ -372,6 +378,11 @@ void precalc_multicolorinfo(void)
 			}
 		}
 	}
+
+#ifdef TIMEPRECALC
+	statusline(INFO, "Precalculation: %.1f ms", 1000 * (double)(clock() - start) / CLOCKS_PER_SEC);
+	napms(1200);
+#endif
 }
 
 #endif /* ENABLE_COLOR */
diff --git a/src/winio.c b/src/winio.c
index a16f8116..7e158526 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -3359,6 +3359,12 @@ void edit_refresh(void)
 		draw_scrollbar();
 #endif
 
+//#define TIMEREFRESH  123
+#ifdef TIMEREFRESH
+#include <time.h>
+	clock_t start = clock();
+#endif
+
 	line = openfile->edittop;
 
 	while (row < editwinrows && line != NULL) {
@@ -3378,6 +3384,10 @@ void edit_refresh(void)
 		row++;
 	}
 
+#ifdef TIMEREFRESH
+	statusline(INFO, "Refresh: %.1f ms", 1000 * (double)(clock() - start) / CLOCKS_PER_SEC);
+#endif
+
 	place_the_cursor();
 	wnoutrefresh(edit);