netstack3_trace/
id.rs

1// Copyright 2025 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5//! Types encoding trace point identifiers.
6
7use core::marker::PhantomData;
8
9/// A resource identifier that can be used as an argument for trace events.
10#[derive(Copy, Clone)]
11pub struct TraceResourceId<'a> {
12    #[cfg_attr(not(target_os = "fuchsia"), allow(unused))]
13    value: u64,
14    _marker: PhantomData<&'a ()>,
15}
16
17impl<'a> TraceResourceId<'a> {
18    /// Creates a new resource id with the given value.
19    pub fn new(value: u64) -> Self {
20        Self { value, _marker: PhantomData }
21    }
22}
23
24#[cfg(target_os = "fuchsia")]
25impl<'a> fuchsia_trace::ArgValue for TraceResourceId<'a> {
26    fn of<'x>(key: &'x str, value: Self) -> fuchsia_trace::Arg<'x>
27    where
28        Self: 'x,
29    {
30        let Self { value, _marker } = value;
31        fuchsia_trace::ArgValue::of(key, value)
32    }
33}