| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * 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. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT HOLDER 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. |
| */ |
| |
| /** |
| * @file |
| * This file includes definitions for manipulating MeshCoP timestamps. |
| * |
| */ |
| |
| #ifndef MESHCOP_TIMESTAMP_HPP_ |
| #define MESHCOP_TIMESTAMP_HPP_ |
| |
| #include <string.h> |
| |
| #include <openthread/platform/toolchain.h> |
| |
| #include "common/encoding.hpp" |
| |
| using ot::Encoding::BigEndian::HostSwap16; |
| |
| namespace ot { |
| namespace MeshCoP { |
| |
| /** |
| * This class implements Timestamp generation and parsing. |
| * |
| */ |
| OT_TOOL_PACKED_BEGIN |
| class Timestamp |
| { |
| public: |
| /** |
| * This method initializes the Timestamp |
| * |
| */ |
| void Init(void) { memset(mSeconds, 0, sizeof(mSeconds)); mTicks = 0; } |
| |
| /** |
| * This method compares this timestamp to another. |
| * |
| * @param[in] aCompare A reference to the timestamp to compare. |
| * |
| * @retval -1 if @p aCompare is less than this timestamp. |
| * @retval 0 if @p aCompare is equal to this timestamp. |
| * @retval 1 if @p aCompare is greater than this timestamp. |
| * |
| */ |
| int Compare(const Timestamp &aCompare) const; |
| |
| /** |
| * This method returns the Seconds value. |
| * |
| * @returns The Seconds value. |
| * |
| */ |
| uint64_t GetSeconds(void) const { |
| uint64_t seconds = 0; |
| |
| for (size_t i = 0; i < sizeof(mSeconds); i++) { |
| seconds = (seconds << 8) | mSeconds[i]; |
| } |
| |
| return seconds; |
| } |
| |
| /** |
| * This method sets the Seconds value. |
| * |
| * @param[in] aSeconds The Seconds value. |
| * |
| */ |
| void SetSeconds(uint64_t aSeconds) { |
| for (size_t i = 0; i < sizeof(mSeconds); i++, aSeconds >>= 8) { |
| mSeconds[sizeof(mSeconds) - 1 - i] = aSeconds & 0xff; |
| } |
| } |
| |
| /** |
| * This method returns the Ticks value. |
| * |
| * @returns The Ticks value. |
| * |
| */ |
| uint16_t GetTicks(void) const { return HostSwap16(mTicks) >> kTicksOffset; } |
| |
| /** |
| * This method sets the Ticks value. |
| * |
| * @param[in] aTicks The Ticks value. |
| * |
| */ |
| void SetTicks(uint16_t aTicks) { |
| mTicks = HostSwap16((HostSwap16(mTicks) & ~kTicksMask) | ((aTicks << kTicksOffset) & kTicksMask)); |
| } |
| |
| /** |
| * This method returns the Authoritative value. |
| * |
| * @returns The Authoritative value. |
| * |
| */ |
| bool GetAuthoritative(void) const { return (HostSwap16(mTicks) & kAuthoritativeMask) != 0; } |
| |
| /** |
| * This method sets the Authoritative value. |
| * |
| * @param[in] aAuthoritative The Authoritative value. |
| * |
| */ |
| void SetAuthoritative(bool aAuthoritative) { |
| mTicks = HostSwap16((HostSwap16(mTicks) & kTicksMask) | ((aAuthoritative << kAuthoritativeOffset) & |
| kAuthoritativeMask)); |
| } |
| |
| private: |
| uint8_t mSeconds[6]; |
| |
| enum |
| { |
| kTicksOffset = 1, |
| kTicksMask = 0x7fff << kTicksOffset, |
| kAuthoritativeOffset = 0, |
| kAuthoritativeMask = 1 << kAuthoritativeOffset, |
| }; |
| uint16_t mTicks; |
| } OT_TOOL_PACKED_END; |
| |
| } // namespace MeshCoP |
| } // namespace ot |
| |
| #endif // MESHCOP_TIMESTAMP_HPP_ |