Add libakiyo

Signed-off-by: Andrew Opalach <andrew@akon.city>

3 files changed, 62 insertions, 0 deletions

diff --git a/src/util/timer/timer.h b/src/util/timer/timer.h
new file mode 100644
index 0000000..2bf6b95
--- /dev/null
+++ b/src/util/timer/timer.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include <al/types.h>
+
+u64 aki_get_timestamp(void);
+f64 aki_get_tick(void);
diff --git a/src/util/timer/timer_linux.c b/src/util/timer/timer_linux.c
new file mode 100644
index 0000000..d93bfdc
--- /dev/null
+++ b/src/util/timer/timer_linux.c
@@ -0,0 +1,17 @@
+#include <time.h>
+
+#include "timer.h"
+
+u64 aki_get_timestamp(void)
+{
+    struct timespec spec;
+    clock_gettime(CLOCK_REALTIME, &spec);
+    return 1e6 * spec.tv_sec + spec.tv_nsec * 1e-3;
+}
+
+f64 aki_get_tick(void)
+{
+    struct timespec spec;
+    clock_gettime(CLOCK_MONOTONIC, &spec);
+    return spec.tv_sec + spec.tv_nsec * 1e-9;
+}
diff --git a/src/util/timer/timer_windows.c b/src/util/timer/timer_windows.c
new file mode 100644
index 0000000..37a8fd8
--- /dev/null
+++ b/src/util/timer/timer_windows.c
@@ -0,0 +1,39 @@
+#include <al/lib.h>
+
+#include "../../winwrap.h"
+
+#include "timer.h"
+
+f64 aki_get_tick(void)
+{
+    LARGE_INTEGER result;
+    QueryPerformanceCounter(&result);
+    return (result.QuadPart/(f64)performance_frequency.QuadPart);
+}
+
+static SYSTEMTIME unix_epoch = {
+    .wYear = 1970,
+    .wMonth = 1,
+    .wDayOfWeek = 4,
+    .wDay = 1,
+    .wHour = 0,
+    .wMinute = 0,
+    .wSecond = 0,
+    .wMilliseconds = 0
+};
+
+u64 aki_get_timestamp(void)
+{
+    FILETIME result0, result1;
+    SystemTimeToFileTime(&unix_epoch, &result0);
+    ULARGE_INTEGER li0 = {
+        .LowPart = result0.dwLowDateTime,
+        .HighPart = result0.dwHighDateTime
+    };
+    GetSystemTimePreciseAsFileTime(&result1);
+    ULARGE_INTEGER li1 = {
+        .LowPart = result1.dwLowDateTime,
+        .HighPart = result1.dwHighDateTime
+    };
+    return (li1.QuadPart - li0.QuadPart) / 10;
+}