Add the files

1 files changed, 80 insertions, 0 deletions

diff --git a/src/common/time.h b/src/common/time.h
new file mode 100644
index 0000000..e2d86ab
--- /dev/null
+++ b/src/common/time.h
@@ -0,0 +1,80 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <time.h>
+#ifdef _WIN32
+    #include <ntstatus.h>
+    #include "common/windows/nt.h"
+    #include <profileapi.h>
+#elif defined(__HAIKU__)
+    #include <OS.h>
+#endif
+
+#include "common/arrutil.h"
+
+static inline double ffTimeGetTick(void) // In msec
+{
+#ifdef _WIN32
+    extern double ffQpcMultiplier;
+    LARGE_INTEGER start;
+    RtlQueryPerformanceCounter(&start);
+    return (double) start.QuadPart * ffQpcMultiplier;
+#elif defined(__HAIKU__)
+    return (double) system_time() / 1000.;
+#else
+    struct timespec timeNow;
+    clock_gettime(CLOCK_MONOTONIC, &timeNow);
+    return (double) timeNow.tv_sec * 1000. + (double) timeNow.tv_nsec / 1000000.;
+#endif
+}
+
+#if _WIN32
+static inline uint64_t ffFileTimeToUnixMs(uint64_t value) {
+    if (__builtin_expect(__builtin_usubll_overflow(value, 116444736000000000ull, &value), false)) {
+        return 0;
+    }
+    return value / 10000ull;
+}
+#endif
+
+static inline uint64_t ffTimeGetNow(void) {
+#ifdef _WIN32
+    uint64_t timeNow = ffKSystemTimeToUInt64(&SharedUserData->SystemTime);
+    return ffFileTimeToUnixMs((uint64_t) timeNow);
+#elif defined(__HAIKU__)
+    return (uint64_t) real_time_clock_usecs() / 1000u;
+#else
+    struct timespec timeNow;
+    clock_gettime(CLOCK_REALTIME, &timeNow);
+    return (uint64_t) (((uint64_t) timeNow.tv_sec * 1000u) + ((uint64_t) timeNow.tv_nsec / 1000000u));
+#endif
+}
+
+// Returns true if not interrupted
+static inline bool ffTimeSleep(uint32_t msec) {
+#ifdef _WIN32
+    LARGE_INTEGER interval;
+    interval.QuadPart = -(int64_t) msec * 10000; // Relative time in 100-nanosecond intervals
+    return NT_SUCCESS(NtDelayExecution(TRUE, &interval));
+#else
+    return nanosleep(&(struct timespec) { msec / 1000, (long) (msec % 1000) * 1000000 }, NULL) == 0;
+#endif
+}
+
+// Not thread-safe
+const char* ffTimeToFullStr(uint64_t msec);
+
+// Not thread-safe
+const char* ffTimeToShortStr(uint64_t msec);
+
+// Not thread-safe
+const char* ffTimeToTimeStr(uint64_t msec);
+
+typedef struct FFTimeGetAgeResult {
+    uint32_t years;
+    uint32_t daysOfYear;
+    double yearsFraction;
+} FFTimeGetAgeResult;
+
+FFTimeGetAgeResult ffTimeGetAge(uint64_t birthMs, uint64_t nowMs);