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src/os/os.h

@@ -44,6 +44,8 @@ fn os_date_t   os_universal_time(void);
 fn s8_t        os_format_date(ma_arena_t *arena, os_date_t date);
 fn f64         os_seconds(void);
 fn f64         os_milliseconds(void);
+fn f64         os_microseconds(void);
+
 
 fn b32         os_copy(s8_t from, s8_t to, b32 overwrite);
 fn b32         os_delete(s8_t path);

src/os/os_unix.c

@@ -25,11 +25,11 @@ fn os_date_t os_universal_time(void) {
     return result;
 }
 
-fn u64 os_get_microseconds(void) {
+fn f64 os_microseconds(void) {
     struct timespec t;
     clock_gettime(CLOCK_MONOTONIC, &t);
     u64 result = t.tv_sec*million(1) + (t.tv_nsec/thousand(1));
-    return result;
+    return (f64)result;
 }
 
 fn f64 os_get_milliseconds(void) {

src/os/os_win32.c

@@ -28,23 +28,30 @@ fn os_date_t os_universal_time(void) {
     return result;
 }
 
+static int64_t win32_counts_per_second;
 fn f64 os_seconds(void) {
-    static int64_t counts_per_second;
-    if (counts_per_second == 0) {
+    if (win32_counts_per_second == 0) {
         LARGE_INTEGER freq;
         QueryPerformanceFrequency(&freq);
-        counts_per_second = freq.QuadPart;
+        win32_counts_per_second = freq.QuadPart;
     }
 
     LARGE_INTEGER time;
     QueryPerformanceCounter(&time);
-    f64 result = (f64)time.QuadPart / (f64)counts_per_second;
+    f64 result = (f64)time.QuadPart / (f64)win32_counts_per_second;
+    return result;
+}
+
+// @todo: revise these conversions
+fn f64 os_microseconds(void) {
+    f64 secs   = os_seconds();
+    f64 result = secs * 1000000.0;
     return result;
 }
 
 fn f64 os_milliseconds(void) {
     f64 secs   = os_seconds();
-    f64 result = secs * 1000;
+    f64 result = secs * 1000.0;
     return result;
 }