fix: timestamp resolution to microseconds on Windows (getsentry#1039)

* fix: timestamp resolution to microseconds on Windows * chore: changelog comment * feat: prefer GetSystemTimePreciseAsFileTime for the timestamp resolution on Windows
aseprite · Sep 3, 2024 · a6ba26e · a6ba26e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+**Fixes**:
+
+- Correct the timestamp resolution to microseconds on Windows. ([#1039](https://github.com/getsentry/sentry-native/pull/1039))
+
 ## 0.7.9
 
 **Fixes**:

diff --git a/src/sentry_utils.h b/src/sentry_utils.h
@@ -106,9 +106,11 @@ sentry__usec_time(void)
     // Contains a 64-bit value representing the number of 100-nanosecond
     // intervals since January 1, 1601 (UTC).
     FILETIME file_time;
-    SYSTEMTIME system_time;
-    GetSystemTime(&system_time);
-    SystemTimeToFileTime(&system_time, &file_time);
+#    if _WIN32_WINNT >= 0x0602
+    GetSystemTimePreciseAsFileTime(&file_time);
+#    else
+    GetSystemTimeAsFileTime(&file_time);
+#    endif
 
     uint64_t timestamp = (uint64_t)file_time.dwLowDateTime
         + ((uint64_t)file_time.dwHighDateTime << 32);