Trait SafeMode
pub trait SafeMode {
type BlockNumber;
// Required methods
fn remaining() -> Option<Self::BlockNumber>;
fn enter(duration: Self::BlockNumber) -> Result<(), SafeModeError>;
fn extend(duration: Self::BlockNumber) -> Result<(), SafeModeError>;
fn exit() -> Result<(), SafeModeError>;
// Provided method
fn is_entered() -> bool { ... }
}Expand description
Can put the runtime into a safe mode.
When the runtime entered safe mode, transaction processing for most general transactions is paused.
Required Associated Types§
type BlockNumber
type BlockNumber
Block number type.
Required Methods§
fn remaining() -> Option<Self::BlockNumber>
fn remaining() -> Option<Self::BlockNumber>
How many more blocks safe mode will stay entered.
If this returns 0, then safe mode will exit in the next block.
fn enter(duration: Self::BlockNumber) -> Result<(), SafeModeError>
fn enter(duration: Self::BlockNumber) -> Result<(), SafeModeError>
Enter safe mode for duration blocks.
Should error when already entered with AlreadyEntered.
fn extend(duration: Self::BlockNumber) -> Result<(), SafeModeError>
fn extend(duration: Self::BlockNumber) -> Result<(), SafeModeError>
Extend safe mode for duration blocks.
Should error when not entered with AlreadyExited.
fn exit() -> Result<(), SafeModeError>
fn exit() -> Result<(), SafeModeError>
Exit safe mode immediately.
This takes effect already in the same block.
Provided Methods§
fn is_entered() -> bool
fn is_entered() -> bool
Whether safe mode is entered.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.