pub struct BackupHook {
pub pre_execution_backup: CallFrameBackup,
}Fields§
§pre_execution_backup: CallFrameBackupWe need to store this because we clear the backup after prepare_execution hook is executed
Trait Implementations§
Source§impl Default for BackupHook
impl Default for BackupHook
Source§fn default() -> BackupHook
fn default() -> BackupHook
Returns the “default value” for a type. Read more
Source§impl Hook for BackupHook
impl Hook for BackupHook
fn prepare_execution(&mut self, vm: &mut VM<'_>) -> Result<(), VMError>
fn finalize_execution( &mut self, vm: &mut VM<'_>, _ctx_result: &mut ContextResult, ) -> Result<(), VMError>
Source§fn reads_top_level_backup(&self) -> bool
fn reads_top_level_backup(&self) -> bool
True iff this hook reads the top-level call-frame backup (
db.tx_backup) in
finalize_execution. Drives VM::preserve_top_level_backup: when any installed hook
returns true, the backup is deep-cloned (not moved out) on the revert / invalid-tx paths
so the hook still sees it. Defaults to false; only BackupHook overrides it.Auto Trait Implementations§
impl Freeze for BackupHook
impl RefUnwindSafe for BackupHook
impl Send for BackupHook
impl Sync for BackupHook
impl Unpin for BackupHook
impl UnsafeUnpin for BackupHook
impl UnwindSafe for BackupHook
Blanket Implementations§
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impl<T> ArchivePointee for T
Source§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
Source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
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impl<T> LayoutRaw for T
Source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
Source§impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
Source§unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
Returns whether the given value has been niched. Read more
Source§fn resolve_niched(out: Place<NichedOption<T, N1>>)
fn resolve_niched(out: Place<NichedOption<T, N1>>)
Writes data to
out indicating that a T is niched.