opc source code

third_party/open62541/arch/win32/ua_clock.c

@@ -0,0 +1,65 @@
+/* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
+ * See http://creativecommons.org/publicdomain/zero/1.0/ for more information.
+ *
+ *    Copyright 2016-2017 (c) Julius Pfrommer, Fraunhofer IOSB
+ *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
+ *    Copyright 2017 (c) Thomas Stalder
+ */
+
+#include <open62541/types.h>
+
+#ifdef UA_ARCHITECTURE_WIN32
+
+#include <time.h>
+/* Backup definition of SLIST_ENTRY on mingw winnt.h */
+# ifdef SLIST_ENTRY
+#  pragma push_macro("SLIST_ENTRY")
+#  undef SLIST_ENTRY
+#  define POP_SLIST_ENTRY
+# endif
+# include <windows.h>
+/* restore definition */
+# ifdef POP_SLIST_ENTRY
+#  undef SLIST_ENTRY
+#  undef POP_SLIST_ENTRY
+#  pragma pop_macro("SLIST_ENTRY")
+# endif
+
+UA_DateTime UA_DateTime_now(void) {
+    /* Windows filetime has the same definition as UA_DateTime */
+    FILETIME ft;
+    SYSTEMTIME st;
+    GetSystemTime(&st);
+    SystemTimeToFileTime(&st, &ft);
+    ULARGE_INTEGER ul;
+    ul.LowPart = ft.dwLowDateTime;
+    ul.HighPart = ft.dwHighDateTime;
+    return (UA_DateTime)ul.QuadPart;
+}
+
+/* Credit to https://stackoverflow.com/questions/13804095/get-the-time-zone-gmt-offset-in-c */
+UA_Int64 UA_DateTime_localTimeUtcOffset(void) {
+    time_t gmt, rawtime = time(NULL);
+
+    struct tm ptm;
+#ifdef __CODEGEARC__
+    gmtime_s(&rawtime, &ptm);
+#else
+    gmtime_s(&ptm, &rawtime);
+#endif
+    // Request that mktime() looksup dst in timezone database
+    ptm.tm_isdst = -1;
+    gmt = mktime(&ptm);
+
+    return (UA_Int64) (difftime(rawtime, gmt) * UA_DATETIME_SEC);
+}
+
+UA_DateTime UA_DateTime_nowMonotonic(void) {
+    LARGE_INTEGER freq, ticks;
+    QueryPerformanceFrequency(&freq);
+    QueryPerformanceCounter(&ticks);
+    UA_Double ticks2dt = UA_DATETIME_SEC / (UA_Double)freq.QuadPart;
+    return (UA_DateTime)(ticks.QuadPart * ticks2dt);
+}
+
+#endif /* UA_ARCHITECTURE_WIN32 */