1 files changed, 75 insertions, 0 deletions
diff --git a/tools/benchmark-io.c b/tools/benchmark-io.c
new file mode 100644
index 0000000..be8fb8f
--- /dev/null
+++ b/tools/benchmark-io.c
@@ -0,0 +1,75 @@
+//
+// benchmark-io.c: measure and compare image loading times
+//
+// Copyright (c) 2021 - 2022, Přemysl Eric Janouch <p@janouch.name>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+//
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gdk/gdk.h>
+#include <time.h>
+
+#include "fiv-io.h"
+
+static double
+timestamp(void)
+{
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return ts.tv_sec + ts.tv_nsec / 1.e9;
+}
+
+static void
+one_file(const char *filename)
+{
+	double since_us = timestamp();
+	FivIoOpenContext ctx = {
+		.uri = g_filename_to_uri(filename, NULL, NULL),
+		.screen_dpi = 96,
+		// Only using this array as a redirect.
+		.warnings = g_ptr_array_new_with_free_func(g_free),
+	};
+
+	cairo_surface_t *loaded_by_us = fiv_io_open(&ctx, NULL);
+	g_free((char *) ctx.uri);
+	g_ptr_array_free(ctx.warnings, TRUE);
+	if (!loaded_by_us)
+		return;
+
+	cairo_surface_destroy(loaded_by_us);
+	double us = timestamp() - since_us;
+
+	double since_pixbuf = timestamp();
+	GdkPixbuf *gdk_pixbuf = gdk_pixbuf_new_from_file(filename, NULL);
+	if (!gdk_pixbuf)
+		return;
+
+	cairo_surface_t *loaded_by_pixbuf =
+		gdk_cairo_surface_create_from_pixbuf(gdk_pixbuf, 1, NULL);
+	g_object_unref(gdk_pixbuf);
+	cairo_surface_destroy(loaded_by_pixbuf);
+	double pixbuf = timestamp() - since_pixbuf;
+
+	printf("%f\t%f\t%.0f%%\t%s\n", us, pixbuf, us / pixbuf * 100, filename);
+}
+
+int
+main(int argc, char *argv[])
+{
+	// Needed for gdk_cairo_surface_create_from_pixbuf().
+	gdk_init(&argc, &argv);
+
+	for (int i = 1; i < argc; i++)
+		one_file(argv[i]);
+	return 0;
+}