Struct VirtManager 

pub struct VirtManager { /* private fields */ }

Manages virtualization instances and their lifecycle.

Instance and module IDs are assigned deterministically from incrementing counters, ensuring no non-determinism across different executions.

NOTE: The per-instance cache deduplicates modules within the lifetime of one VirtManager (i.e. one externalities extension, i.e. one block). Cross-block reuse is deferred to PolkaVM’s built-in on-disk persistent cache.

Trait Implementations

impl Default for VirtManager

fn default() -> Self

Returns the “default value” for a type.

impl VirtManagerBackend for VirtManager

fn compile_from_bytes( &mut self, program: &[u8], identifier: Option<&[u8]>, ) -> Result<ModuleId, ModuleError>

Compile program into a new module.

fn lookup(&mut self, identifier: &[u8]) -> Result<ModuleId, ModuleError>

Look up a module previously cached under identifier.

fn instantiate( &mut self, module_id: ModuleId, ) -> Result<InstanceId, InstantiateError>

fn prepare( &mut self, instance_id: InstanceId, function: &[u8], ) -> Result<(), ExecError>

fn run( &mut self, instance_id: InstanceId, gas_left: i64, a0: u64, ) -> Result<(ExecStatus, ExecBuffer), ExecError>

fn destroy(&mut self, instance_id: InstanceId) -> Result<(), DestroyError>

fn read_memory( &mut self, instance_id: InstanceId, offset: u32, dest: &mut [u8], ) -> Result<(), MemoryError>

fn write_memory( &mut self, instance_id: InstanceId, offset: u32, src: &[u8], ) -> Result<(), MemoryError>