the begginning

dbcon/joblist/timestamp.cpp

@@ -0,0 +1,107 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+//
+// $Id: timestamp.cpp 9210 2013-01-21 14:10:42Z rdempsey $
+//
+
+#include <unistd.h>
+#include <sys/time.h>
+#include <ctime>
+#include <string>
+#include <cstring>
+#include <cstdio>
+using namespace std;
+
+#include "timestamp.h"
+
+namespace
+{
+const struct timeval zerotime = {0, 0};
+}
+
+namespace joblist
+{
+
+JSTimeStamp::JSTimeStamp() :
+	fFirstInsertTime(zerotime),
+	fLastInsertTime(zerotime),
+	fEndofInputTime(zerotime),
+	fFirstReadTime(zerotime),
+	fLastReadTime(zerotime)
+{
+}
+
+/* static */
+const string JSTimeStamp::format(const struct timeval& tvbuf)
+{
+	string res;
+	char timeString[50];
+	struct tm tmbuf;
+#ifdef _MSC_VER
+	errno_t p = 0;
+	time_t t = tvbuf.tv_sec;
+	p = localtime_s(&tmbuf, &t);
+	if (p != 0)
+	{
+		memset(&tmbuf, 0, sizeof(tmbuf));
+		strcpy(timeString, "UNKNOWN");
+	}
+	else
+	{
+		if (strftime(timeString, 50, "%Y-%m-%d %H:%M:%S", &tmbuf) == 0)
+			strcpy(timeString, "UNKNOWN");
+	}
+#else
+	localtime_r(&tvbuf.tv_sec, &tmbuf);
+	strftime(timeString, 50, "%F %T", &tmbuf);
+#endif
+	const int len = strlen(timeString);
+	snprintf(&timeString[len], (50-len), ".%06lu", tvbuf.tv_usec);
+	res = timeString;
+	return res;
+}
+
+/* static */
+const string JSTimeStamp::tsdiffstr(const struct timeval& t2, const struct timeval& t1)
+{
+	string res;
+	int ds;
+	int dus;
+	char timeString[50];
+	dus = t2.tv_usec - t1.tv_usec;
+	ds = t2.tv_sec - t1.tv_sec;
+	if (dus < 0)
+	{
+		ds--;
+		dus += 1000000;
+	}
+	snprintf(timeString, 50, "%d.%06d", ds, dus);
+	res = timeString;
+	return res;
+}
+
+/* static */
+const string JSTimeStamp::timeNow()
+{
+	struct timeval tv;
+	gettimeofday(&tv, 0);
+	return JSTimeStamp::format(tv);
+}
+
+} //namespace joblist
+