MXS-2017 Move maxscale::Semaphore to maxbase::Semaphore

maxutils/maxbase/src/semaphore.cc

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
+ *
+ * Change Date: 2022-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+#include <maxbase/semaphore.hh>
+#include <time.h>
+
+namespace maxbase
+{
+
+//static
+void Semaphore::get_current_timespec(time_t seconds,
+                                     long nseconds,
+                                     timespec* pTs)
+{
+    mxb_assert(nseconds <= 999999999);
+
+    timespec& ts = *pTs;
+
+    MXB_AT_DEBUG(int rc = ) clock_gettime(CLOCK_REALTIME, &ts);
+    mxb_assert(rc == 0);
+
+    ts.tv_sec += seconds;
+
+    uint64_t nseconds_sum = ts.tv_nsec + nseconds;
+
+    if (nseconds_sum > 1000000000)
+    {
+        ts.tv_sec += 1;
+        nseconds_sum -= 1000000000;
+    }
+
+    ts.tv_nsec = nseconds_sum;
+}
+
+}