opc source code

third_party/open62541/arch/posix/ua_clock.c

@@ -0,0 +1,59 @@
+/* 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) Fraunhofer IOSB (Author: Julius Pfrommer)
+ *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
+ *    Copyright 2017 (c) Thomas Stalder, Blue Time Concept SA
+ */
+
+#include <open62541/types.h>
+
+#ifdef UA_ARCHITECTURE_POSIX
+
+#include <time.h>
+#include <sys/time.h>
+
+#if defined(__APPLE__) || defined(__MACH__)
+# include <mach/clock.h>
+# include <mach/mach.h>
+#endif
+
+UA_DateTime UA_DateTime_now(void) {
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (tv.tv_sec * UA_DATETIME_SEC) + (tv.tv_usec * UA_DATETIME_USEC) + UA_DATETIME_UNIX_EPOCH;
+}
+
+/* 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;
+    struct tm gbuf;
+    ptm = gmtime_r(&rawtime, &gbuf);
+    // 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) {
+#if defined(__APPLE__) || defined(__MACH__)
+    /* OS X does not have clock_gettime, use clock_get_time */
+    clock_serv_t cclock;
+    mach_timespec_t mts;
+    host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &cclock);
+    clock_get_time(cclock, &mts);
+    mach_port_deallocate(mach_task_self(), cclock);
+    return (mts.tv_sec * UA_DATETIME_SEC) + (mts.tv_nsec / 100);
+#elif !defined(CLOCK_MONOTONIC_RAW)
+    struct timespec ts;
+    clock_gettime(CLOCK_MONOTONIC, &ts);
+    return (ts.tv_sec * UA_DATETIME_SEC) + (ts.tv_nsec / 100);
+#else
+    struct timespec ts;
+    clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+    return (ts.tv_sec * UA_DATETIME_SEC) + (ts.tv_nsec / 100);
+#endif
+}
+
+#endif /* UA_ARCHITECTURE_POSIX */