version 3.0

common/time/Makefile

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+SUBDIR+=
+
+include ../../common/subdir.mk

common/time/lib.mk

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+VPATH+=	${TOPDIR}/common/time
+
+SRCS+=	time.cc

common/time/time.cc

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+/*
+ * Copyright (c) 2011 Juli Mallett. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <common/time/time.h>
+
+NanoTime
+NanoTime::current_time(void)
+{
+	NanoTime nt;
+	int rv;
+
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
+	struct timespec ts;
+
+	rv = ::clock_gettime(CLOCK_MONOTONIC, &ts);
+	ASSERT("/nano/time/posix", rv != -1);
+
+	nt.seconds_ = ts.tv_sec;
+	nt.nanoseconds_ = ts.tv_nsec;
+#else
+	struct timeval tv;
+
+	rv = ::gettimeofday(&tv, NULL);
+	ASSERT("/nano/time/gtod", rv != -1);
+	nt.seconds_ = tv.tv_sec;
+	nt.nanoseconds_ = tv.tv_usec * 1000;
+#endif
+
+	return (nt);
+}
+
+void 
+NanoTime::sleep(int ms) 
+{
+	struct timespec ts;
+
+	ts.tv_sec = ms / 1000;
+	ts.tv_nsec = (ms - ts.tv_sec) * 1000000;
+
+	nanosleep(&ts, NULL);
+}

common/time/time.h

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+/*
+ * Copyright (c) 2011 Juli Mallett. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef	COMMON_TIME_TIME_H
+#define	COMMON_TIME_TIME_H
+
+#include <map>
+
+struct NanoTime {
+	uintmax_t seconds_;
+	uintmax_t nanoseconds_;
+
+	NanoTime(void)
+	: seconds_(0),
+	  nanoseconds_(0)
+	{ }
+
+	NanoTime(const NanoTime& src)
+	: seconds_(src.seconds_),
+	  nanoseconds_(src.nanoseconds_)
+	{ }
+
+	bool operator< (const NanoTime& b) const
+	{
+		if (seconds_ == b.seconds_)
+			return (nanoseconds_ < b.nanoseconds_);
+		return (seconds_ < b.seconds_);
+	}
+
+	bool operator> (const NanoTime& b) const
+	{
+		if (seconds_ == b.seconds_)
+			return (nanoseconds_ > b.nanoseconds_);
+		return (seconds_ > b.seconds_);
+	}
+
+	bool operator<= (const NanoTime& b) const
+	{
+		if (seconds_ == b.seconds_)
+			return (nanoseconds_ <= b.nanoseconds_);
+		return (seconds_ <= b.seconds_);
+	}
+
+	bool operator>= (const NanoTime& b) const
+	{
+		if (seconds_ == b.seconds_)
+			return (nanoseconds_ >= b.nanoseconds_);
+		return (seconds_ >= b.seconds_);
+	}
+
+	NanoTime& operator+= (const NanoTime& b)
+	{
+		seconds_ += b.seconds_;
+		nanoseconds_ += b.nanoseconds_;
+
+		if (nanoseconds_ >= 1000000000) {
+			seconds_++;
+			nanoseconds_ -= 1000000000;
+		}
+
+		return (*this);
+	}
+
+	NanoTime& operator-= (const NanoTime& b)
+	{
+		ASSERT("/nano/time", *this >= b);
+
+		if (nanoseconds_ < b.nanoseconds_) {
+			nanoseconds_ += 1000000000;
+			seconds_ -= 1;
+		}
+
+		seconds_ -= b.seconds_;
+		nanoseconds_ -= b.nanoseconds_;
+
+		return (*this);
+	}
+
+	static NanoTime current_time(void);
+	static void sleep(int ms);
+};
+
+#endif /* !COMMON_TIME_TIME_H */