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StateMutationGuard

pharos_native::runtime::state_store

Struct StateMutationGuard 

Source 
pub struct StateMutationGuard {
    lock_path: PathBuf,
    _file: File,
}
Expand description

Owns the exclusive lock for one state document mutation.

§Fields

§Examples

ⓘ
let _ = std::mem::size_of::<pharos_native::runtime::state_store::StateMutationGuard>();

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§lock_path: PathBuf§_file: File

Implementations§

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impl StateMutationGuard

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pub fn acquire(state_path: &Path) -> Result<Self, &'static str>

Acquires a cross-process lock covering the complete state read-modify-write operation.

§Parameters
  • state_path: State file path whose lock companion will be acquired.
§Returns

Returns the acquired guard when the lock can be taken within the retry window.

§Errors

Returns an error when the lock path is invalid, unavailable, or times out.

§Performance

Performance is bounded by retry time and lock-file filesystem operations.

§Examples
ⓘ
let _result = pharos_native::runtime::state_store::StateMutationGuard::acquire(std::path::Path::new("state.json"));

Trait Implementations§

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impl Drop for StateMutationGuard

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fn drop(&mut self)

Performs drop.

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fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more

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