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#ifndef PROTON_TIMESTAMP_HPP
#define PROTON_TIMESTAMP_HPP
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "./duration.hpp"
#include <proton/type_compat.h>
/// @file
/// @copybrief proton::timestamp
namespace proton {
/// A 64-bit timestamp in milliseconds since the Unix epoch.
///
/// The dawn of the Unix epoch was 00:00:00 (UTC), 1 January 1970.
class timestamp : private internal::comparable<timestamp> {
public:
/// A numeric type holding a value in milliseconds.
typedef int64_t numeric_type;
/// The current wall-clock time.
PN_CPP_EXTERN static timestamp now();
/// Construct from a value in milliseconds.
explicit timestamp(numeric_type ms = 0) : ms_(ms) {}
/// Assign a value in milliseconds.
timestamp& operator=(numeric_type ms) { ms_ = ms; return *this; }
/// Get the value in milliseconds.
numeric_type milliseconds() const { return ms_; }
private:
numeric_type ms_;
};
/// @name Comparison and arithmetic operators
/// @{
inline bool operator==(timestamp x, timestamp y) { return x.milliseconds() == y.milliseconds(); }
inline bool operator<(timestamp x, timestamp y) { return x.milliseconds() < y.milliseconds(); }
inline timestamp operator+(timestamp ts, duration d) { return timestamp(ts.milliseconds() + d.milliseconds()); }
inline timestamp operator-(timestamp ts, duration d) { return timestamp(ts.milliseconds() - d.milliseconds()); }
inline duration operator-(timestamp t0, timestamp t1) { return duration(t0.milliseconds() - t1.milliseconds()); }
inline timestamp operator+(duration d, timestamp ts) { return ts + d; }
/// @}
/// Print a timestamp.
PN_CPP_EXTERN std::ostream& operator<<(std::ostream&, timestamp);
} // proton
#endif // PROTON_TIMESTAMP_HPP
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