Module solana_program::sysvar::clock

Information about the network’s clock, ticks, slots, etc.

The clock sysvar provides access to the Clock type, which includes the current slot, the current epoch, and the approximate real-world time of the slot.

Clock implements Sysvar::get and can be loaded efficiently without passing the sysvar account ID to the program.

See also the Solana documentation on the clock sysvar.

Examples

Accessing via on-chain program directly:

fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {

    let clock = Clock::get()?;
    msg!("clock: {:#?}", clock);

    Ok(())
}

Accessing via on-chain program’s account parameters:

fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {
    let account_info_iter = &mut accounts.iter();
    let clock_account_info = next_account_info(account_info_iter)?;

    assert!(clock::check_id(clock_account_info.key));

    let clock = Clock::from_account_info(clock_account_info)?;
    msg!("clock: {:#?}", clock);

    Ok(())
}

Accessing via the RPC client:

fn print_sysvar_clock(client: &RpcClient) -> Result<()> {
    let clock = client.get_account(&clock::ID)?;
    let data: Clock = bincode::deserialize(&clock.data)?;

    Ok(())
}

Re-exports

pub use crate::clock::Clock;

Statics

ID

The static program ID.

Functions

check_id

Returns true if given pubkey is the program ID.

id

Returns the program ID.