fidl_fuchsia_power_metrics__common/

fidl_fuchsia_power_metrics__common.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

pub type ClientId = String;

/// Errors associated with Recorder methods.
/// If the request contains any of the following errors, it will fail without
/// affecting the existing logging tasks.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u32)]
pub enum RecorderError {
    /// Indicates that no driver is found for requested metric logging.
    NoDrivers = 1,
    /// Indicates that an invalid sampling interval was provided.
    InvalidSamplingInterval = 2,
    /// Requests to start logging will fail if logging is already active for a
    /// given client.
    AlreadyLogging = 3,
    /// Indicates that the logging request contains duplicated metric type.
    DuplicatedMetric = 4,
    /// Indicates that the total number of active clients has reached the
    /// allowed maxium (defined by `MAX_CONCURRENT_CLIENTS = 20` in
    /// the Recorder to keep memory use bounded).
    TooManyActiveClients = 5,
    /// Indicates that statistics is enabled and an invalid statistics interval
    /// is provided.
    InvalidStatisticsInterval = 6,
    /// Indicates that the request failed due to an internal error.
    Internal = 7,
}

impl RecorderError {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            1 => Some(Self::NoDrivers),
            2 => Some(Self::InvalidSamplingInterval),
            3 => Some(Self::AlreadyLogging),
            4 => Some(Self::DuplicatedMetric),
            5 => Some(Self::TooManyActiveClients),
            6 => Some(Self::InvalidStatisticsInterval),
            7 => Some(Self::Internal),
            _ => None,
        }
    }

    #[inline]
    pub const fn into_primitive(self) -> u32 {
        self as u32
    }
}

/// CPU Load metric details.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct CpuLoad {
    /// Length of the polling interval in milliseconds.
    /// Must be smaller than `duration_ms` of the logging request.
    /// Must not be smaller than 500ms if `output_samples_to_syslog` is enabled
    /// in the logging request.
    pub interval_ms: u32,
}

impl fidl::Persistable for CpuLoad {}

/// GPU Usage metric details.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct GpuUsage {
    /// Length of the polling interval in milliseconds.
    /// Must be smaller than `duration_ms` of the logging request.
    /// Must not be smaller than 500ms if `output_samples_to_syslog` is enabled
    /// in the logging request.
    pub interval_ms: u32,
}

impl fidl::Persistable for GpuUsage {}

/// Network Activity metric details.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct NetworkActivity {
    /// Length of the polling interval in milliseconds.
    /// Must be smaller than `duration_ms` of the logging request.
    /// Must not be smaller than 500ms if `output_samples_to_syslog` is enabled
    /// in the logging request.
    pub interval_ms: u32,
}

impl fidl::Persistable for NetworkActivity {}

/// Power metric details.
#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct Power {
    /// Length of the sampling interval in milliseconds.
    /// Must not be smaller than 500ms if `output_samples_to_syslog` is enabled
    /// in the logging request.
    /// Must be smaller than `duration_ms` of the logging request.
    pub sampling_interval_ms: u32,
    /// Boxed(optional) statistics arguments. If none, statistics is disabled.
    pub statistics_args: Option<Box<StatisticsArgs>>,
}

impl fidl::Persistable for Power {}

#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct RecorderStartLoggingForeverRequest {
    pub client_id: String,
    pub metrics: Vec<Metric>,
    pub output_samples_to_syslog: bool,
    pub output_stats_to_syslog: bool,
}

impl fidl::Persistable for RecorderStartLoggingForeverRequest {}

#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct RecorderStartLoggingRequest {
    pub client_id: String,
    pub metrics: Vec<Metric>,
    pub duration_ms: u32,
    pub output_samples_to_syslog: bool,
    pub output_stats_to_syslog: bool,
}

impl fidl::Persistable for RecorderStartLoggingRequest {}

#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct RecorderStopLoggingRequest {
    pub client_id: String,
}

impl fidl::Persistable for RecorderStopLoggingRequest {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct RecorderStopLoggingResponse {
    pub stopped: bool,
}

impl fidl::Persistable for RecorderStopLoggingResponse {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct StatisticsArgs {
    /// Length of the interval in milliseconds for summarizing statistics (e.g.,
    /// min, max, avg).
    /// Must be equal to or larger than `sampling_interval_ms` in the metrics.
    /// Must be smaller than `duration_ms` of the logging request.
    /// Must not be smaller than 500ms if `output_stats_to_syslog` is enabled in
    /// the logging request.
    pub statistics_interval_ms: u32,
}

impl fidl::Persistable for StatisticsArgs {}

/// Temperature metric details.
#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct Temperature {
    /// Length of the sampling interval in milliseconds.
    /// Must not be smaller than 500ms if `output_samples_to_syslog` is enabled
    /// in the logging request.
    /// Must be smaller than `duration_ms` of the logging request.
    pub sampling_interval_ms: u32,
    /// Boxed(optional) statistics arguments. If none, statistics is disabled.
    pub statistics_args: Option<Box<StatisticsArgs>>,
}

impl fidl::Persistable for Temperature {}

/// Metric type requested in Recorder methods.
#[derive(Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum Metric {
    Temperature(Temperature),
    CpuLoad(CpuLoad),
    Power(Power),
    GpuUsage(GpuUsage),
    NetworkActivity(NetworkActivity),
}

impl Metric {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Temperature(_) => 1,
            Self::CpuLoad(_) => 2,
            Self::Power(_) => 3,
            Self::GpuUsage(_) => 4,
            Self::NetworkActivity(_) => 5,
        }
    }
}

impl fidl::Persistable for Metric {}

mod internal {
    use super::*;
    unsafe impl fidl::encoding::TypeMarker for RecorderError {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            std::mem::align_of::<u32>()
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            std::mem::size_of::<u32>()
        }

        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            false
        }
    }

    impl fidl::encoding::ValueTypeMarker for RecorderError {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            *value
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Self, D> for RecorderError {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            encoder.write_num(self.into_primitive(), offset);
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for RecorderError {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::NoDrivers
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u32>(offset);

            *self = Self::from_primitive(prim).ok_or(fidl::Error::InvalidEnumValue)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for CpuLoad {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for CpuLoad {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<CpuLoad, D> for &CpuLoad {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CpuLoad>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut CpuLoad).write_unaligned((self as *const CpuLoad).read());
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<u32, D>>
        fidl::encoding::Encode<CpuLoad, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<CpuLoad>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for CpuLoad {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { interval_ms: fidl::new_empty!(u32, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for GpuUsage {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for GpuUsage {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<GpuUsage, D> for &GpuUsage {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<GpuUsage>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut GpuUsage).write_unaligned((self as *const GpuUsage).read());
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<u32, D>>
        fidl::encoding::Encode<GpuUsage, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<GpuUsage>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for GpuUsage {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { interval_ms: fidl::new_empty!(u32, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for NetworkActivity {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for NetworkActivity {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<NetworkActivity, D>
        for &NetworkActivity
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<NetworkActivity>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut NetworkActivity)
                    .write_unaligned((self as *const NetworkActivity).read());
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<u32, D>>
        fidl::encoding::Encode<NetworkActivity, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<NetworkActivity>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for NetworkActivity {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { interval_ms: fidl::new_empty!(u32, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for Power {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Power {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Power, D> for &Power {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Power>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<Power, D>::encode(
                (
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.sampling_interval_ms),
                    <fidl::encoding::Boxed<StatisticsArgs> as fidl::encoding::ValueTypeMarker>::borrow(&self.statistics_args),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<u32, D>,
            T1: fidl::encoding::Encode<fidl::encoding::Boxed<StatisticsArgs>, D>,
        > fidl::encoding::Encode<Power, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Power>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(0);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for Power {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                sampling_interval_ms: fidl::new_empty!(u32, D),
                statistics_args: fidl::new_empty!(fidl::encoding::Boxed<StatisticsArgs>, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(0) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 0 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(u32, D, &mut self.sampling_interval_ms, decoder, offset + 0, _depth)?;
            fidl::decode!(
                fidl::encoding::Boxed<StatisticsArgs>,
                D,
                &mut self.statistics_args,
                decoder,
                offset + 8,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for RecorderStartLoggingForeverRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for RecorderStartLoggingForeverRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            40
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<RecorderStartLoggingForeverRequest, D>
        for &RecorderStartLoggingForeverRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStartLoggingForeverRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<RecorderStartLoggingForeverRequest, D>::encode(
                (
                    <fidl::encoding::BoundedString<16> as fidl::encoding::ValueTypeMarker>::borrow(&self.client_id),
                    <fidl::encoding::UnboundedVector<Metric> as fidl::encoding::ValueTypeMarker>::borrow(&self.metrics),
                    <bool as fidl::encoding::ValueTypeMarker>::borrow(&self.output_samples_to_syslog),
                    <bool as fidl::encoding::ValueTypeMarker>::borrow(&self.output_stats_to_syslog),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<fidl::encoding::BoundedString<16>, D>,
            T1: fidl::encoding::Encode<fidl::encoding::UnboundedVector<Metric>, D>,
            T2: fidl::encoding::Encode<bool, D>,
            T3: fidl::encoding::Encode<bool, D>,
        > fidl::encoding::Encode<RecorderStartLoggingForeverRequest, D> for (T0, T1, T2, T3)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStartLoggingForeverRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(32);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 16, depth)?;
            self.2.encode(encoder, offset + 32, depth)?;
            self.3.encode(encoder, offset + 33, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for RecorderStartLoggingForeverRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                client_id: fidl::new_empty!(fidl::encoding::BoundedString<16>, D),
                metrics: fidl::new_empty!(fidl::encoding::UnboundedVector<Metric>, D),
                output_samples_to_syslog: fidl::new_empty!(bool, D),
                output_stats_to_syslog: fidl::new_empty!(bool, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(32) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffffffff0000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 32 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(
                fidl::encoding::BoundedString<16>,
                D,
                &mut self.client_id,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                fidl::encoding::UnboundedVector<Metric>,
                D,
                &mut self.metrics,
                decoder,
                offset + 16,
                _depth
            )?;
            fidl::decode!(
                bool,
                D,
                &mut self.output_samples_to_syslog,
                decoder,
                offset + 32,
                _depth
            )?;
            fidl::decode!(bool, D, &mut self.output_stats_to_syslog, decoder, offset + 33, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for RecorderStartLoggingRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for RecorderStartLoggingRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            40
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<RecorderStartLoggingRequest, D> for &RecorderStartLoggingRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStartLoggingRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<RecorderStartLoggingRequest, D>::encode(
                (
                    <fidl::encoding::BoundedString<16> as fidl::encoding::ValueTypeMarker>::borrow(&self.client_id),
                    <fidl::encoding::UnboundedVector<Metric> as fidl::encoding::ValueTypeMarker>::borrow(&self.metrics),
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.duration_ms),
                    <bool as fidl::encoding::ValueTypeMarker>::borrow(&self.output_samples_to_syslog),
                    <bool as fidl::encoding::ValueTypeMarker>::borrow(&self.output_stats_to_syslog),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<fidl::encoding::BoundedString<16>, D>,
            T1: fidl::encoding::Encode<fidl::encoding::UnboundedVector<Metric>, D>,
            T2: fidl::encoding::Encode<u32, D>,
            T3: fidl::encoding::Encode<bool, D>,
            T4: fidl::encoding::Encode<bool, D>,
        > fidl::encoding::Encode<RecorderStartLoggingRequest, D> for (T0, T1, T2, T3, T4)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStartLoggingRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(32);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 16, depth)?;
            self.2.encode(encoder, offset + 32, depth)?;
            self.3.encode(encoder, offset + 36, depth)?;
            self.4.encode(encoder, offset + 37, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for RecorderStartLoggingRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                client_id: fidl::new_empty!(fidl::encoding::BoundedString<16>, D),
                metrics: fidl::new_empty!(fidl::encoding::UnboundedVector<Metric>, D),
                duration_ms: fidl::new_empty!(u32, D),
                output_samples_to_syslog: fidl::new_empty!(bool, D),
                output_stats_to_syslog: fidl::new_empty!(bool, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(32) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffff000000000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 32 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(
                fidl::encoding::BoundedString<16>,
                D,
                &mut self.client_id,
                decoder,
                offset + 0,
                _depth
            )?;
            fidl::decode!(
                fidl::encoding::UnboundedVector<Metric>,
                D,
                &mut self.metrics,
                decoder,
                offset + 16,
                _depth
            )?;
            fidl::decode!(u32, D, &mut self.duration_ms, decoder, offset + 32, _depth)?;
            fidl::decode!(
                bool,
                D,
                &mut self.output_samples_to_syslog,
                decoder,
                offset + 36,
                _depth
            )?;
            fidl::decode!(bool, D, &mut self.output_stats_to_syslog, decoder, offset + 37, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for RecorderStopLoggingRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for RecorderStopLoggingRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<RecorderStopLoggingRequest, D> for &RecorderStopLoggingRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStopLoggingRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<RecorderStopLoggingRequest, D>::encode(
                (<fidl::encoding::BoundedString<16> as fidl::encoding::ValueTypeMarker>::borrow(
                    &self.client_id,
                ),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<fidl::encoding::BoundedString<16>, D>,
        > fidl::encoding::Encode<RecorderStopLoggingRequest, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStopLoggingRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for RecorderStopLoggingRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { client_id: fidl::new_empty!(fidl::encoding::BoundedString<16>, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl::encoding::BoundedString<16>,
                D,
                &mut self.client_id,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for RecorderStopLoggingResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for RecorderStopLoggingResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            1
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            1
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect>
        fidl::encoding::Encode<RecorderStopLoggingResponse, D> for &RecorderStopLoggingResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStopLoggingResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<RecorderStopLoggingResponse, D>::encode(
                (<bool as fidl::encoding::ValueTypeMarker>::borrow(&self.stopped),),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<bool, D>>
        fidl::encoding::Encode<RecorderStopLoggingResponse, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<RecorderStopLoggingResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D>
        for RecorderStopLoggingResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { stopped: fidl::new_empty!(bool, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(bool, D, &mut self.stopped, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for StatisticsArgs {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for StatisticsArgs {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<StatisticsArgs, D>
        for &StatisticsArgs
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<StatisticsArgs>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut StatisticsArgs)
                    .write_unaligned((self as *const StatisticsArgs).read());
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<D: fidl::encoding::ResourceDialect, T0: fidl::encoding::Encode<u32, D>>
        fidl::encoding::Encode<StatisticsArgs, D> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<StatisticsArgs>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for StatisticsArgs {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { statistics_interval_ms: fidl::new_empty!(u32, D) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for Temperature {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Temperature {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Temperature, D>
        for &Temperature
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Temperature>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<Temperature, D>::encode(
                (
                    <u32 as fidl::encoding::ValueTypeMarker>::borrow(&self.sampling_interval_ms),
                    <fidl::encoding::Boxed<StatisticsArgs> as fidl::encoding::ValueTypeMarker>::borrow(&self.statistics_args),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
            D: fidl::encoding::ResourceDialect,
            T0: fidl::encoding::Encode<u32, D>,
            T1: fidl::encoding::Encode<fidl::encoding::Boxed<StatisticsArgs>, D>,
        > fidl::encoding::Encode<Temperature, D> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Temperature>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            unsafe {
                let ptr = encoder.buf.as_mut_ptr().add(offset).offset(0);
                (ptr as *mut u64).write_unaligned(0);
            }
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 8, depth)?;
            Ok(())
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for Temperature {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                sampling_interval_ms: fidl::new_empty!(u32, D),
                statistics_args: fidl::new_empty!(fidl::encoding::Boxed<StatisticsArgs>, D),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            let ptr = unsafe { decoder.buf.as_ptr().add(offset).offset(0) };
            let padval = unsafe { (ptr as *const u64).read_unaligned() };
            let mask = 0xffffffff00000000u64;
            let maskedval = padval & mask;
            if maskedval != 0 {
                return Err(fidl::Error::NonZeroPadding {
                    padding_start: offset + 0 + ((mask as u64).trailing_zeros() / 8) as usize,
                });
            }
            fidl::decode!(u32, D, &mut self.sampling_interval_ms, decoder, offset + 0, _depth)?;
            fidl::decode!(
                fidl::encoding::Boxed<StatisticsArgs>,
                D,
                &mut self.statistics_args,
                decoder,
                offset + 8,
                _depth
            )?;
            Ok(())
        }
    }

    impl fidl::encoding::ValueTypeMarker for Metric {
        type Borrowed<'a> = &'a Self;
        fn borrow(value: &<Self as fidl::encoding::TypeMarker>::Owned) -> Self::Borrowed<'_> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Metric {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }

    unsafe impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Encode<Metric, D> for &Metric {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_, D>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Metric>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                Metric::Temperature(ref val) => {
                    fidl::encoding::encode_in_envelope::<Temperature, D>(
                        <Temperature as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
                Metric::CpuLoad(ref val) => fidl::encoding::encode_in_envelope::<CpuLoad, D>(
                    <CpuLoad as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                Metric::Power(ref val) => fidl::encoding::encode_in_envelope::<Power, D>(
                    <Power as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                Metric::GpuUsage(ref val) => fidl::encoding::encode_in_envelope::<GpuUsage, D>(
                    <GpuUsage as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                Metric::NetworkActivity(ref val) => {
                    fidl::encoding::encode_in_envelope::<NetworkActivity, D>(
                        <NetworkActivity as fidl::encoding::ValueTypeMarker>::borrow(val),
                        encoder,
                        offset + 8,
                        _depth,
                    )
                }
            }
        }
    }

    impl<D: fidl::encoding::ResourceDialect> fidl::encoding::Decode<Self, D> for Metric {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Temperature(fidl::new_empty!(Temperature, D))
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_, D>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <Temperature as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => <CpuLoad as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                3 => <Power as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                4 => <GpuUsage as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                5 => <NetworkActivity as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                _ => return Err(fidl::Error::UnknownUnionTag),
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::Temperature(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = Metric::Temperature(fidl::new_empty!(Temperature, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::Temperature(ref mut val) = self {
                        fidl::decode!(Temperature, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::CpuLoad(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = Metric::CpuLoad(fidl::new_empty!(CpuLoad, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::CpuLoad(ref mut val) = self {
                        fidl::decode!(CpuLoad, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                3 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::Power(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = Metric::Power(fidl::new_empty!(Power, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::Power(ref mut val) = self {
                        fidl::decode!(Power, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                4 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::GpuUsage(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = Metric::GpuUsage(fidl::new_empty!(GpuUsage, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::GpuUsage(ref mut val) = self {
                        fidl::decode!(GpuUsage, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                5 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::NetworkActivity(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = Metric::NetworkActivity(fidl::new_empty!(NetworkActivity, D));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Metric::NetworkActivity(ref mut val) = self {
                        fidl::decode!(NetworkActivity, D, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                ordinal => panic!("unexpected ordinal {:?}", ordinal),
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }
}