Imported Upstream version 3.2.2

[debian/gnuradio] / omnithread / gnuradio / omni_time.h

diff --git a/omnithread/gnuradio/omni_time.h b/omnithread/gnuradio/omni_time.h
new file mode 100644 (file)
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+++ b/omnithread/gnuradio/omni_time.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2007,2008 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio 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; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio 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.
+ */
+#ifndef INCLUDED_OMNI_TIME_H
+#define INCLUDED_OMNI_TIME_H
+
+struct omni_time {
+  long int d_secs;     // seconds.
+  long int d_nsecs;    // nanoseconds.  Always in [0, 1e9-1]
+
+  omni_time() : d_secs(0), d_nsecs(0) {}
+  omni_time(long secs, long nanosecs=0) : d_secs(secs), d_nsecs(nanosecs) {}
+
+  // N.B., this only makes sense for differences between times.
+  // Double doesn't have enough bits to precisely represent an absolute time.
+  omni_time(double secs);
+
+  // N.B. This only makes sense for differences between times.
+  // Double doesn't have enough bits to precisely represent an absolute time.
+  double double_time() const { return (double)d_secs + d_nsecs * 1e-9; }
+
+  /*!
+   * \brief Return an absolute time suitable for use with
+   * schedule_one_shot_timeout & schedule_periodic_timeout
+   *
+   * The return value is the current time plus the given relative offset.
+   */
+  static omni_time time(const omni_time &relative_offset = omni_time());
+};
+
+
+inline static bool
+operator<(const omni_time &x, const omni_time &y)
+{
+  return ((x.d_secs < y.d_secs)
+         || (x.d_secs == y.d_secs && x.d_nsecs < y.d_nsecs));
+}
+
+inline static bool
+operator>(const omni_time &x, const omni_time &y)
+{
+  return ((x.d_secs > y.d_secs)
+         || (x.d_secs == y.d_secs && x.d_nsecs > y.d_nsecs));
+}
+
+inline static bool
+operator>=(const omni_time &x, const omni_time &y)
+{
+  return ((x.d_secs > y.d_secs)
+         || (x.d_secs == y.d_secs && x.d_nsecs >= y.d_nsecs));
+}
+
+inline static bool
+operator<=(const omni_time &x, const omni_time &y)
+{
+  return ((x.d_secs < y.d_secs)
+         || (x.d_secs == y.d_secs && x.d_nsecs <= y.d_nsecs));
+}
+
+inline static bool
+operator==(const omni_time &x, const omni_time &y)
+{
+  return (x.d_secs == y.d_secs && x.d_nsecs == y.d_nsecs);
+}
+
+
+omni_time operator+(const omni_time &x, const omni_time &y);
+omni_time operator+(const omni_time &x, double y);
+omni_time operator-(const omni_time &x, const omni_time &y);
+omni_time operator-(const omni_time &x, double y);
+
+#endif /* INCLUDED_OMNI_TIME_H */