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PhysicalFileHeader

reddb::storage::engine

Struct PhysicalFileHeader 

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pub struct PhysicalFileHeader {
Show 28 fields
    pub format_version: u32,
    pub sequence: u64,
    pub manifest_oldest_root: u64,
    pub manifest_root: u64,
    pub free_set_root: u64,
    pub manifest_page: u32,
    pub manifest_checksum: u64,
    pub collection_roots_page: u32,
    pub collection_roots_checksum: u64,
    pub collection_root_count: u32,
    pub snapshot_count: u32,
    pub index_count: u32,
    pub catalog_collection_count: u32,
    pub catalog_total_entities: u64,
    pub export_count: u32,
    pub graph_projection_count: u32,
    pub analytics_job_count: u32,
    pub manifest_event_count: u32,
    pub registry_page: u32,
    pub registry_checksum: u64,
    pub recovery_page: u32,
    pub recovery_checksum: u64,
    pub catalog_page: u32,
    pub catalog_checksum: u64,
    pub metadata_state_page: u32,
    pub metadata_state_checksum: u64,
    pub vector_artifact_page: u32,
    pub vector_artifact_checksum: u64,

}
Expand description

Minimal physical state mirrored into page 0 for paged databases.

The pager owns when this is read and written, but the field layout is a durable file compatibility contract.

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§format_version: u32§sequence: u64§manifest_oldest_root: u64§manifest_root: u64§free_set_root: u64§manifest_page: u32§manifest_checksum: u64§collection_roots_page: u32§collection_roots_checksum: u64§collection_root_count: u32§snapshot_count: u32§index_count: u32§catalog_collection_count: u32§catalog_total_entities: u64§export_count: u32§graph_projection_count: u32§analytics_job_count: u32§manifest_event_count: u32§registry_page: u32§registry_checksum: u64§recovery_page: u32§recovery_checksum: u64§catalog_page: u32§catalog_checksum: u64§metadata_state_page: u32§metadata_state_checksum: u64§vector_artifact_page: u32§vector_artifact_checksum: u64

Trait Implementations§

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impl Clone for PhysicalFileHeader

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fn clone(&self) -> PhysicalFileHeader

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for PhysicalFileHeader

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impl Debug for PhysicalFileHeader

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for PhysicalFileHeader

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fn default() -> PhysicalFileHeader

Returns the “default value” for a type. Read more
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impl Eq for PhysicalFileHeader

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impl PartialEq for PhysicalFileHeader

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fn eq(&self, other: &PhysicalFileHeader) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for PhysicalFileHeader

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Gets the TypeId of self. Read more
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