bp3d_debug/trace/
interface.rs

1// Copyright (c) 2024, BlockProject 3D
2//
3// All rights reserved.
4//
5// Redistribution and use in source and binary forms, with or without modification,
6// are permitted provided that the following conditions are met:
7//
8//     * Redistributions of source code must retain the above copyright notice,
9//       this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above copyright notice,
11//       this list of conditions and the following disclaimer in the documentation
12//       and/or other materials provided with the distribution.
13//     * Neither the name of BlockProject 3D nor the names of its contributors
14//       may be used to endorse or promote products derived from this software
15//       without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29use crate::field::Field;
30use crate::trace::span::{Callsite, Id, Span};
31use std::num::NonZeroU32;
32
33pub trait Tracer {
34    fn register_callsite(&self, callsite: &'static Callsite) -> NonZeroU32;
35    fn span_create(&self, callsite: NonZeroU32, fields: &[Field]) -> NonZeroU32;
36    fn span_enter(&self, id: Id);
37    fn span_record(&self, id: Id, fields: &[Field]);
38    fn span_exit(&self, id: Id);
39    fn span_destroy(&self, id: Id);
40}
41
42pub trait Trace {
43    type Output;
44    fn trace(self, span: Span) -> Self::Output;
45}