Struct massa_execution_worker::context::ExecutionContextSnapshot

source · 
pub struct ExecutionContextSnapshot {
Show 17 fields
    pub ledger_changes: LedgerChanges,
    pub async_pool_changes: AsyncPoolChanges,
    pub deferred_calls_changes: DeferredCallRegistryChanges,
    pub message_infos: BTreeMap<AsyncMessageId, AsyncMessage>,
    pub executed_ops: ExecutedOpsChanges,
    pub executed_denunciations: ExecutedDenunciationsChanges,
    pub pos_changes: PoSChanges,
    pub created_addr_index: u64,
    pub created_event_index: u64,
    pub created_message_index: u64,
    pub stack: Vec<ExecutionStackElement>,
    pub event_count: usize,
    pub unsafe_rng: Xoshiro256PlusPlus,
    pub gas_remaining_before_subexecution: Option<u64>,
    pub recursion_counter: u16,
    pub user_event_count_in_current_exec: u16,
    pub transfer_history_len: usize,

}
Expand description

A snapshot taken from an ExecutionContext and that represents its current state. The ExecutionContext state can then be restored later from this snapshot.

Fields§

§ledger_changes: LedgerChanges

speculative ledger changes caused so far in the context

§async_pool_changes: AsyncPoolChanges

speculative asynchronous pool messages emitted so far in the context

§deferred_calls_changes: DeferredCallRegistryChanges

speculative deferred calls changes

§message_infos: BTreeMap<AsyncMessageId, AsyncMessage>

the associated message infos for the speculative async pool

§executed_ops: ExecutedOpsChanges

speculative list of operations executed

§executed_denunciations: ExecutedDenunciationsChanges

speculative list of executed denunciations

§pos_changes: PoSChanges

speculative roll state changes caused so far in the context

§created_addr_index: u64

counter of newly created addresses so far for this slot (does not reset after each execution)

§created_event_index: u64

counter of newly created events so far for this slot (does not reset after each execution)

§created_message_index: u64

counter of async messages emitted so far for this slot (does not reset after each execution)

§stack: Vec<ExecutionStackElement>

address call stack, most recent is at the back

§event_count: usize

keep the count of event emitted in the context

§unsafe_rng: Xoshiro256PlusPlus

Unsafe random state

§gas_remaining_before_subexecution: Option<u64>

The gas remaining before the last subexecution. so excluding the gas used by the last sc call.

§recursion_counter: u16

recursion counter, incremented for each new nested call This is used to avoid stack overflow issues in the VM (that would crash the node instead of failing the call), by limiting the depth of recursion contracts can have with the max_recursive_calls_depth value.

§user_event_count_in_current_exec: u16

Counts the number of event (apart from system events) in the current execution_context Should be reset to 0 when executing a new op / readonly request / asc / deferred call

§transfer_history_len: usize

Transfer history count

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