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use std::{sync::Arc, thread};

use crate::*;

/// Handle to a query set.
///
/// It can be created with [`Device::create_query_set`].
///
/// Corresponds to [WebGPU `GPUQuerySet`](https://gpuweb.github.io/gpuweb/#queryset).
#[derive(Debug)]
pub struct QuerySet {
    pub(crate) context: Arc<C>,
    pub(crate) data: Box<Data>,
}
#[cfg(send_sync)]
#[cfg(send_sync)]
static_assertions::assert_impl_all!(QuerySet: Send, Sync);

super::impl_partialeq_eq_hash!(QuerySet);

impl Drop for QuerySet {
    fn drop(&mut self) {
        if !thread::panicking() {
            self.context.query_set_drop(self.data.as_ref());
        }
    }
}

/// Describes a [`QuerySet`].
///
/// For use with [`Device::create_query_set`].
///
/// Corresponds to [WebGPU `GPUQuerySetDescriptor`](
/// https://gpuweb.github.io/gpuweb/#dictdef-gpuquerysetdescriptor).
pub type QuerySetDescriptor<'a> = wgt::QuerySetDescriptor<Label<'a>>;
static_assertions::assert_impl_all!(QuerySetDescriptor<'_>: Send, Sync);