solana-program-runtime 1.9.3

Solana program runtime
Documentation 
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use {solana_sdk::pubkey::Pubkey, std::collections::HashMap};

#[derive(Default, Debug, PartialEq)]
pub struct ProgramTiming {
    pub accumulated_us: u64,
    pub accumulated_units: u64,
    pub count: u32,
    pub errored_txs_compute_consumed: Vec<u64>,
    // Sum of all units in `errored_txs_compute_consumed`
    pub total_errored_units: u64,
}

impl ProgramTiming {
    pub fn coalesce_error_timings(&mut self, current_estimated_program_cost: u64) {
        for tx_error_compute_consumed in self.errored_txs_compute_consumed.drain(..) {
            let compute_units_update =
                std::cmp::max(current_estimated_program_cost, tx_error_compute_consumed);
            self.accumulated_units = self.accumulated_units.saturating_add(compute_units_update);
            self.count = self.count.saturating_add(1);
        }
    }

    pub fn accumulate_program_timings(&mut self, other: &ProgramTiming) {
        self.accumulated_us = self.accumulated_us.saturating_add(other.accumulated_us);
        self.accumulated_units = self
            .accumulated_units
            .saturating_add(other.accumulated_units);
        self.count = self.count.saturating_add(other.count);
        // Clones the entire vector, maybe not great...
        self.errored_txs_compute_consumed
            .extend(other.errored_txs_compute_consumed.clone());
        self.total_errored_units = self
            .total_errored_units
            .saturating_add(other.total_errored_units);
    }
}

#[derive(Default, Debug, PartialEq)]
pub struct ExecuteDetailsTimings {
    pub serialize_us: u64,
    pub create_vm_us: u64,
    pub execute_us: u64,
    pub deserialize_us: u64,
    pub changed_account_count: u64,
    pub total_account_count: u64,
    pub total_data_size: usize,
    pub data_size_changed: usize,
    pub per_program_timings: HashMap<Pubkey, ProgramTiming>,
}
impl ExecuteDetailsTimings {
    pub fn accumulate(&mut self, other: &ExecuteDetailsTimings) {
        self.serialize_us = self.serialize_us.saturating_add(other.serialize_us);
        self.create_vm_us = self.create_vm_us.saturating_add(other.create_vm_us);
        self.execute_us = self.execute_us.saturating_add(other.execute_us);
        self.deserialize_us = self.deserialize_us.saturating_add(other.deserialize_us);
        self.changed_account_count = self
            .changed_account_count
            .saturating_add(other.changed_account_count);
        self.total_account_count = self
            .total_account_count
            .saturating_add(other.total_account_count);
        self.total_data_size = self.total_data_size.saturating_add(other.total_data_size);
        self.data_size_changed = self
            .data_size_changed
            .saturating_add(other.data_size_changed);
        for (id, other) in &other.per_program_timings {
            let program_timing = self.per_program_timings.entry(*id).or_default();
            program_timing.accumulate_program_timings(other);
        }
    }

    pub fn accumulate_program(
        &mut self,
        program_id: &Pubkey,
        us: u64,
        compute_units_consumed: u64,
        is_error: bool,
    ) {
        let program_timing = self.per_program_timings.entry(*program_id).or_default();
        program_timing.accumulated_us = program_timing.accumulated_us.saturating_add(us);
        if is_error {
            program_timing
                .errored_txs_compute_consumed
                .push(compute_units_consumed);
            program_timing.total_errored_units = program_timing
                .total_errored_units
                .saturating_add(compute_units_consumed);
        } else {
            program_timing.accumulated_units = program_timing
                .accumulated_units
                .saturating_add(compute_units_consumed);
            program_timing.count = program_timing.count.saturating_add(1);
        };
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    fn construct_execute_timings_with_program(
        program_id: &Pubkey,
        us: u64,
        compute_units_consumed: u64,
    ) -> ExecuteDetailsTimings {
        let mut execute_details_timings = ExecuteDetailsTimings::default();

        // Accumulate an erroring transaction
        let is_error = true;
        execute_details_timings.accumulate_program(
            program_id,
            us,
            compute_units_consumed,
            is_error,
        );

        // Accumulate a non-erroring transaction
        let is_error = false;
        execute_details_timings.accumulate_program(
            program_id,
            us,
            compute_units_consumed,
            is_error,
        );

        let program_timings = execute_details_timings
            .per_program_timings
            .get(program_id)
            .unwrap();

        // Both error and success transactions count towards `accumulated_us`
        assert_eq!(program_timings.accumulated_us, us.saturating_mul(2));
        assert_eq!(program_timings.accumulated_units, compute_units_consumed);
        assert_eq!(program_timings.count, 1,);
        assert_eq!(
            program_timings.errored_txs_compute_consumed,
            vec![compute_units_consumed]
        );
        assert_eq!(program_timings.total_errored_units, compute_units_consumed,);

        execute_details_timings
    }

    #[test]
    fn test_execute_details_timing_acumulate_program() {
        // Acumulate an erroring transaction
        let program_id = Pubkey::new_unique();
        let us = 100;
        let compute_units_consumed = 1;
        construct_execute_timings_with_program(&program_id, us, compute_units_consumed);
    }

    #[test]
    fn test_execute_details_timing_acumulate() {
        // Acumulate an erroring transaction
        let program_id = Pubkey::new_unique();
        let us = 100;
        let compute_units_consumed = 1;
        let mut execute_details_timings = ExecuteDetailsTimings::default();

        // Construct another separate instance of ExecuteDetailsTimings with non default fields
        let mut other_execute_details_timings =
            construct_execute_timings_with_program(&program_id, us, compute_units_consumed);
        let account_count = 1;
        let data_size_changed = 1;
        other_execute_details_timings.serialize_us = us;
        other_execute_details_timings.create_vm_us = us;
        other_execute_details_timings.execute_us = us;
        other_execute_details_timings.deserialize_us = us;
        other_execute_details_timings.changed_account_count = account_count;
        other_execute_details_timings.total_account_count = account_count;
        other_execute_details_timings.total_data_size = data_size_changed;
        other_execute_details_timings.data_size_changed = data_size_changed;

        // Accumulate the other instance into the current instance
        execute_details_timings.accumulate(&other_execute_details_timings);

        // Check that the two instances are equal
        assert_eq!(execute_details_timings, other_execute_details_timings);
    }
}