/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at
http://mozilla.org/MPL/2.0/. */
//! Gecko profiler time.
use crate::gecko_bindings::{bindings, structs::mozilla};
use std::mem::MaybeUninit;
/// Profiler time for the marker API.
/// This should be used as the `MarkerTiming` parameter.
/// E.g.:
///
/// ```
/// let start = ProfilerTime::now();
/// // ...some code...
/// gecko_profiler::add_untyped_marker(
/// "marker name",
/// category,
/// MarkerOptions {
/// timing: MarkerTiming::interval_until_now_from(start),
/// ..Default::default()
/// },
/// );
/// ```
#[derive(Debug)]
pub struct ProfilerTime(pub(crate) mozilla::TimeStamp);
impl ProfilerTime {
pub fn now() -> ProfilerTime {
let mut marker_timing = MaybeUninit::<mozilla::TimeStamp>::uninit();
unsafe {
bindings::gecko_profiler_construct_timestamp_now(marker_timing.as_mut_ptr());
ProfilerTime(marker_timing.assume_init())
}
}
pub fn add_microseconds(self, microseconds: f64) -> Self {
let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
unsafe {
bindings::gecko_profiler_add_timestamp(&self.0, dest.as_mut_ptr(), microseconds);
ProfilerTime(dest.assume_init())
}
}
pub fn subtract_microseconds(self, microseconds: f64) -> Self {
let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
unsafe {
bindings::gecko_profiler_subtract_timestamp(&self.0, dest.as_mut_ptr(), microseconds)
;
ProfilerTime(dest.assume_init())
}
}
}
impl Clone for ProfilerTime {
fn clone(&self) -> Self {
let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
unsafe {
bindings::gecko_profiler_clone_timestamp(&self.0, dest.as_mut_ptr());
ProfilerTime(dest.assume_init())
}
}
}
impl Drop for ProfilerTime {
fn drop(&mut self) {
unsafe {
bindings::gecko_profiler_destruct_timestamp(&mut self.0);
}
}
}
