Trait MutationBudget 

pub trait MutationBudget: Send {
    // Required methods
    fn begin(&mut self) -> Result<()>;
    fn reserve(&mut self, bytes: u64) -> Result<()>;
    fn end(&mut self);
    fn effect(&mut self);
    fn syscalls(&mut self, count: u64, settled: bool) -> Result<()>;
    fn copied(&mut self, entries: u64, bytes: u64) -> Result<()>;
}

Resource accounting for native tree operations. Once a mutation succeeds, subsequent work must settle fuel rather than refuse. Heap admission stays fallible.

Required Methods

fn begin(&mut self) -> Result<()>

fn reserve(&mut self, bytes: u64) -> Result<()>

fn end(&mut self)

fn effect(&mut self)

fn syscalls(&mut self, count: u64, settled: bool) -> Result<()>

fn copied(&mut self, entries: u64, bytes: u64) -> Result<()>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors