1 files changed, 85 insertions, 0 deletions
diff --git a/kon/kontime.h b/kon/kontime.h
new file mode 100644
index 0000000..da46ddd
--- /dev/null
+++ b/kon/kontime.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * kontime.h
+ *
+ * Copyright (c) 2026 KonAki
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef KONTIME_H
+#define KONTIME_H
+
+/*** definition ***/
+
+typedef double kon_time;
+
+kon_time kon_getTime(void);
+
+void kon_sleep(kon_time seconds);
+
+/*** implementation ***/
+
+#ifdef KONTIME_IMPLEMENTATION
+
+#if defined(__linux__) || defined(__unix__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
+
+#define _POSIX_C_SOURCE 200809L
+#include <time.h>
+
+kon_time kon_getTime(void) {
+  struct timespec ts;
+  clock_gettime(CLOCK_MONOTONIC, &ts);
+
+  return (kon_time)ts.tv_sec + (kon_time)ts.tv_nsec / 1e9; 
+}
+
+void kon_sleep(kon_time seconds) {
+	struct timespec ts;
+	ts.tv_sec  = (time_t)seconds;
+	ts.tv_nsec = (long)((seconds - ts.tv_sec) * 1e9);
+		
+	nanosleep(&ts, NULL);
+}
+
+#elif defined(_WIN32)
+
+#include <windows.h>
+
+kon_time kon_getTime(void) {
+	LARGE_INTEGER freq, now;
+	QueryPerformanceFrequency(&freq);
+	QueryPerformanceCounter(&now);
+
+	return (kon_time)now.QuadPart / (kon_time)freq.QuadPart;
+}
+
+void kon_sleep(kon_time seconds) {
+	Sleep((DWORD)(seconds * 1000.0));
+}
+
+#else
+#error "kontime.h: unsupported platform!"
+
+#endif
+
+#endif /* end of KONTIME_IMPLEMENTATION */
+
+
+#endif