Struct ethcore::trace::ExecutiveVMTracer

pub struct ExecutiveVMTracer { /* private fields */ }

Simple VM tracer. Traces all operations.

Implementations

impl ExecutiveVMTracer

pub fn toplevel() -> Self

Create a new top-level instance.

Trait Implementations

impl VMTracer for ExecutiveVMTracer

type Output = VMTrace

Data returned when draining the VMTracer.

fn trace_next_instruction(
    &mut self,
    _pc: usize,
    _instruction: u8,
    _current_gas: U256
) -> bool

Trace the progression of interpreter to next instruction. If tracer returns false it won’t be called again. @returns true if trace_prepare_execute and trace_executed should be called.

fn trace_prepare_execute(
    &mut self,
    pc: usize,
    instruction: u8,
    gas_cost: U256,
    mem_written: Option<(usize, usize)>,
    store_written: Option<(U256, U256)>
)

Trace the preparation to execute a single valid instruction.

fn trace_failed(&mut self)

Trace the execution failure of a single instruction.

fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8])

Trace the finalised execution of a single valid instruction.

fn prepare_subtrace(&mut self, code: &[u8])

Spawn subtracer which will be used to trace deeper levels of execution.

fn done_subtrace(&mut self)

Finalize subtracer.

fn drain(self) -> Option<VMTrace>

Consumes self and returns the VM trace.