| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // ====================================================================== | ||
| 2 | // \title Os/Posix/RawTime.cpp | ||
| 3 | // \brief Posix implementation for Os::RawTime | ||
| 4 | // ====================================================================== | ||
| 5 | #include <Fw/Logger/Logger.hpp> | ||
| 6 | #include <Fw/Types/Assert.hpp> | ||
| 7 | #include <Os/Posix/RawTime.hpp> | ||
| 8 | #include <Os/Posix/error.hpp> | ||
| 9 | #include <cerrno> | ||
| 10 | |||
| 11 | namespace Os { | ||
| 12 | namespace Posix { | ||
| 13 | namespace RawTime { | ||
| 14 | |||
| 15 | 101467 | PosixRawTime::PosixRawTime(RawTimeSource source) { | |
| 16 | 101467 | this->m_handle.m_clock_id = static_cast<clockid_t>(source); | |
| 17 | 101467 | } | |
| 18 | |||
| 19 | 1189 | PosixRawTime::Status PosixRawTime::now() { | |
| 20 |
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1189 | int status = clock_gettime(this->m_handle.m_clock_id, &this->m_handle.m_timespec); |
| 21 |
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1189 | if (status != 0) { |
| 22 | 1 | return errno_to_rawtime_status(errno); | |
| 23 | } | ||
| 24 | 1188 | return Status::OP_OK; | |
| 25 | } | ||
| 26 | |||
| 27 | 5193 | PosixRawTime::Status PosixRawTime::getTimeInterval(const Os::RawTime& other, Fw::TimeInterval& interval) const { | |
| 28 | // const_cast: RawTimeInterface::getHandle() is non-const; the handle is only read here | ||
| 29 | const PosixRawTimeHandle* other_handle = | ||
| 30 |
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5193 | static_cast<const PosixRawTimeHandle*>(const_cast<Os::RawTime&>(other).getHandle()); |
| 31 | 5193 | FW_ASSERT(other_handle != nullptr); | |
| 32 | // Times read from different clocks share no epoch, so their difference is meaningless | ||
| 33 |
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5193 | if (this->m_handle.m_clock_id != other_handle->m_clock_id) { |
| 34 | 4 | return Status::INVALID_PARAMS; | |
| 35 | } | ||
| 36 | 5189 | timespec t1 = this->m_handle.m_timespec; | |
| 37 | 5189 | timespec t2 = other_handle->m_timespec; | |
| 38 | |||
| 39 | // Guarantee t1 is the later time to make the calculation below easier | ||
| 40 |
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5189 | if ((t1.tv_sec < t2.tv_sec) or (t1.tv_sec == t2.tv_sec and t1.tv_nsec < t2.tv_nsec)) { |
| 41 | 2026 | t1 = other_handle->m_timespec; | |
| 42 | 2026 | t2 = this->m_handle.m_timespec; | |
| 43 | } | ||
| 44 | |||
| 45 | // Here we have guaranteed that t1 > t2, so there is no underflow | ||
| 46 | 5189 | U32 sec = static_cast<U32>(t1.tv_sec - t2.tv_sec); | |
| 47 | 5189 | U32 nanosec = 0; | |
| 48 |
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5189 | if (t1.tv_nsec < t2.tv_nsec) { |
| 49 | 2 | sec -= 1; // subtract nsec carry to seconds | |
| 50 | 2 | nanosec = static_cast<U32>(t1.tv_nsec + (1000000000 - t2.tv_nsec)); | |
| 51 | } else { | ||
| 52 | 5187 | nanosec = static_cast<U32>(t1.tv_nsec - t2.tv_nsec); | |
| 53 | } | ||
| 54 | |||
| 55 |
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5189 | interval.set(sec, nanosec / 1000); |
| 56 | 5189 | return Status::OP_OK; | |
| 57 | } | ||
| 58 | |||
| 59 | 765 | Fw::SerializeStatus PosixRawTime::serializeTo(Fw::SerialBufferBase& buffer, Fw::Endianness mode) const { | |
| 60 | static_assert(PosixRawTime::SERIALIZED_SIZE >= 2 * sizeof(U32), | ||
| 61 | "PosixRawTime implementation requires at least 2*sizeof(U32) serialization size"); | ||
| 62 | 765 | Fw::SerializeStatus status = buffer.serializeFrom(static_cast<U32>(this->m_handle.m_timespec.tv_sec), mode); | |
| 63 |
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765 | if (status != Fw::SerializeStatus::FW_SERIALIZE_OK) { |
| 64 | ✗ | return status; | |
| 65 | } | ||
| 66 | 765 | return buffer.serializeFrom(static_cast<U32>(this->m_handle.m_timespec.tv_nsec), mode); | |
| 67 | } | ||
| 68 | |||
| 69 | 730 | Fw::SerializeStatus PosixRawTime::deserializeFrom(Fw::SerialBufferBase& buffer, Fw::Endianness mode) { | |
| 70 | static_assert(PosixRawTime::SERIALIZED_SIZE >= 2 * sizeof(U32), | ||
| 71 | "PosixRawTime implementation requires at least 2*sizeof(U32) serialization size"); | ||
| 72 | 730 | U32 sec = 0; | |
| 73 | 730 | U32 nsec = 0; | |
| 74 |
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730 | Fw::SerializeStatus status = buffer.deserializeTo(sec, mode); |
| 75 |
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730 | if (status != Fw::SerializeStatus::FW_SERIALIZE_OK) { |
| 76 | ✗ | return status; | |
| 77 | } | ||
| 78 |
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730 | status = buffer.deserializeTo(nsec, mode); |
| 79 |
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730 | if (status != Fw::SerializeStatus::FW_SERIALIZE_OK) { |
| 80 | ✗ | return status; | |
| 81 | } | ||
| 82 | 730 | this->m_handle.m_timespec = {static_cast<time_t>(sec), static_cast<long>(nsec)}; | |
| 83 | 730 | return Fw::SerializeStatus::FW_SERIALIZE_OK; | |
| 84 | } | ||
| 85 | |||
| 86 | 5987 | RawTimeHandle* PosixRawTime::getHandle() { | |
| 87 | 5987 | return &this->m_handle; | |
| 88 | } | ||
| 89 | |||
| 90 | } // namespace RawTime | ||
| 91 | } // namespace Posix | ||
| 92 | } // namespace Os | ||
| 93 |