Struct wgpu_core::hub::Hub

pub struct Hub {

    pub(crate) adapters: Registry<Arc<Adapter>>,
    pub(crate) devices: Registry<Arc<Device>>,
    pub(crate) queues: Registry<Arc<Queue>>,
    pub(crate) pipeline_layouts: Registry<Fallible<PipelineLayout>>,
    pub(crate) shader_modules: Registry<Fallible<ShaderModule>>,
    pub(crate) bind_group_layouts: Registry<Fallible<BindGroupLayout>>,
    pub(crate) bind_groups: Registry<Fallible<BindGroup>>,
    pub(crate) command_buffers: Registry<Arc<CommandBuffer>>,
    pub(crate) render_bundles: Registry<Fallible<RenderBundle>>,
    pub(crate) render_pipelines: Registry<Fallible<RenderPipeline>>,
    pub(crate) compute_pipelines: Registry<Fallible<ComputePipeline>>,
    pub(crate) pipeline_caches: Registry<Fallible<PipelineCache>>,
    pub(crate) query_sets: Registry<Fallible<QuerySet>>,
    pub(crate) buffers: Registry<Fallible<Buffer>>,
    pub(crate) staging_buffers: Registry<StagingBuffer>,
    pub(crate) textures: Registry<Fallible<Texture>>,
    pub(crate) texture_views: Registry<Fallible<TextureView>>,
    pub(crate) samplers: Registry<Fallible<Sampler>>,
}

All the resources tracked by a crate::global::Global.

Locking

Each field in Hub is a Registry holding all the values of a particular type of resource, all protected by a single RwLock. So for example, to access any Buffer, you must acquire a read lock on the Hubs entire buffers registry. The lock guard gives you access to the Registry’s Storage, which you can then index with the buffer’s id. (Yes, this design causes contention; see [#2272].)

But most wgpu operations require access to several different kinds of resource, so you often need to hold locks on several different fields of your Hub simultaneously.

Inside the Registry there are Arc<T> where T is a Resource Lock of Registry happens only when accessing to get the specific resource

Fields

adapters: Registry<Arc<Adapter>>

devices: Registry<Arc<Device>>

queues: Registry<Arc<Queue>>

pipeline_layouts: Registry<Fallible<PipelineLayout>>

shader_modules: Registry<Fallible<ShaderModule>>

bind_group_layouts: Registry<Fallible<BindGroupLayout>>

bind_groups: Registry<Fallible<BindGroup>>

command_buffers: Registry<Arc<CommandBuffer>>

render_bundles: Registry<Fallible<RenderBundle>>

render_pipelines: Registry<Fallible<RenderPipeline>>

compute_pipelines: Registry<Fallible<ComputePipeline>>

pipeline_caches: Registry<Fallible<PipelineCache>>

query_sets: Registry<Fallible<QuerySet>>

buffers: Registry<Fallible<Buffer>>

staging_buffers: Registry<StagingBuffer>

textures: Registry<Fallible<Texture>>

texture_views: Registry<Fallible<TextureView>>

samplers: Registry<Fallible<Sampler>>

Implementations

impl Hub

pub(crate) fn new() -> Self

pub fn generate_report(&self) -> HubReport