added more scene dependencies, added tinywl

1 files changed, 27 insertions, 0 deletions

diff --git a/include/util/time.h b/include/util/time.h
new file mode 100644
index 0000000..287698d
--- /dev/null
+++ b/include/util/time.h
@@ -0,0 +1,27 @@
+#ifndef UTIL_TIME_H
+#define UTIL_TIME_H
+
+#include <time.h>
+
+/**
+ * Get the current time, in milliseconds.
+ */
+uint32_t get_current_time_msec(void);
+
+/**
+ * Convert a timespec to milliseconds.
+ */
+int64_t timespec_to_msec(const struct timespec *a);
+
+/**
+ * Convert nanoseconds to a timespec.
+ */
+void timespec_from_nsec(struct timespec *r, int64_t nsec);
+
+/**
+ * Subtracts timespec `b` from timespec `a`, and stores the difference in `r`.
+ */
+void timespec_sub(struct timespec *r, const struct timespec *a,
+		const struct timespec *b);
+
+#endif