1 files changed, 58 insertions, 0 deletions
diff --git a/src/ui/widget/canvas/framecheck.h b/src/ui/widget/canvas/framecheck.h
new file mode 100644
index 0000000..8964561
--- /dev/null
+++ b/src/ui/widget/canvas/framecheck.h
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef INKSCAPE_FRAMECHECK_H
+#define INKSCAPE_FRAMECHECK_H
+
+#include <glib.h>
+
+namespace Inkscape::FrameCheck {
+
+/// RAII object that logs a timing event for the duration of its lifetime.
+struct Event
+{
+    gint64 start;
+    char const *name;
+    int subtype;
+
+    Event() : start(-1) {}
+
+    Event(char const *name, int subtype = 0) : start(g_get_monotonic_time()), name(name), subtype(subtype) {}
+
+    Event(Event &&p) { movefrom(p); }
+
+    ~Event() { finish(); }
+
+    Event &operator=(Event &&p)
+    {
+        finish();
+        movefrom(p);
+        return *this;
+    }
+
+private:
+    void movefrom(Event &p)
+    {
+        start = p.start;
+        name = p.name;
+        subtype = p.subtype;
+        p.start = -1;
+    }
+
+    void finish() { if (start != -1) write(); }
+
+    void write();
+};
+
+} // namespace Inkscape::FrameCheck
+
+#endif // INKSCAPE_FRAMECHECK_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :