--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libmlk-core/mlk/core/trace.h	Sat Oct 15 20:23:14 2022 +0200
@@ -0,0 +1,41 @@
+/*
+ * trace.h -- non-fatal message logs
+ *
+ * Copyright (c) 2020-2022 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * 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.
+ */
+
+#ifndef MLK_CORE_TRACE_H
+#define MLK_CORE_TRACE_H
+
+#include <stdarg.h>
+
+#include "core.h"
+
+#define TRACE_LINE_MAX (1024)
+
+extern void (*trace_handler)(const char *);
+extern void *trace_data;
+
+CORE_BEGIN_DECLS
+
+void
+tracef(const char *, ...);
+
+void
+traceva(const char *, va_list);
+
+CORE_END_DECLS
+
+#endif /* !MLK_CORE_TRACE_H */