Struct InternMacroRulesQuery
pub struct InternMacroRulesQuery;
Implementations§
§impl InternMacroRulesQuery
impl InternMacroRulesQuery
pub fn in_db(
self,
db: &dyn InternDatabase,
) -> QueryTable<'_, InternMacroRulesQuery>
pub fn in_db( self, db: &dyn InternDatabase, ) -> QueryTable<'_, InternMacroRulesQuery>
Get access to extra methods pertaining to this query. You can also use it to invoke this query.
§impl InternMacroRulesQuery
impl InternMacroRulesQuery
pub fn in_db_mut(
self,
db: &mut dyn InternDatabase,
) -> QueryTableMut<'_, InternMacroRulesQuery>
pub fn in_db_mut( self, db: &mut dyn InternDatabase, ) -> QueryTableMut<'_, InternMacroRulesQuery>
Like in_db
, but gives access to methods for setting the
value of an input. Not applicable to derived queries.
§Threads, cancellation, and blocking
Mutating the value of a query cannot be done while there are
still other queries executing. If you are using your database
within a single thread, this is not a problem: you only have
&self
access to the database, but this method requires &mut self
.
However, if you have used snapshot
to create other threads,
then attempts to set
will block the current thread until
those snapshots are dropped (usually when those threads
complete). This also implies that if you create a snapshot but
do not send it to another thread, then invoking set
will
deadlock.
Before blocking, the thread that is attempting to set
will
also set a cancellation flag. This will cause any query
invocations in other threads to unwind with a Cancelled
sentinel value and eventually let the set
succeed once all
threads have unwound past the ra_salsa invocation.
If your query implementations are performing expensive
operations without invoking another query, you can also use
the Runtime::unwind_if_cancelled
method to check for an
ongoing cancellation and bring those operations to a close,
thus allowing the set
to succeed. Otherwise, long-running
computations may lead to “starvation”, meaning that the
thread attempting to set
has to wait a long, long time. =)
Trait Implementations§
§impl Debug for InternMacroRulesQuery
impl Debug for InternMacroRulesQuery
§impl Default for InternMacroRulesQuery
impl Default for InternMacroRulesQuery
§fn default() -> InternMacroRulesQuery
fn default() -> InternMacroRulesQuery
§impl Query for InternMacroRulesQuery
impl Query for InternMacroRulesQuery
§const QUERY_INDEX: u16 = 32u16
const QUERY_INDEX: u16 = 32u16
§const QUERY_NAME: &'static str = "intern_macro_rules"
const QUERY_NAME: &'static str = "intern_macro_rules"
foo
)§type Key = MacroRulesLoc
type Key = MacroRulesLoc
§type Storage = InternedStorage<InternMacroRulesQuery>
type Storage = InternedStorage<InternMacroRulesQuery>
§fn query_storage<'a>(
group_storage: &'a <InternMacroRulesQuery as QueryDb<'_>>::GroupStorage,
) -> &'a Arc<<InternMacroRulesQuery as Query>::Storage>
fn query_storage<'a>( group_storage: &'a <InternMacroRulesQuery as QueryDb<'_>>::GroupStorage, ) -> &'a Arc<<InternMacroRulesQuery as Query>::Storage>
§fn query_storage_mut<'a>(
group_storage: &'a <InternMacroRulesQuery as QueryDb<'_>>::GroupStorage,
) -> &'a Arc<<InternMacroRulesQuery as Query>::Storage>
fn query_storage_mut<'a>( group_storage: &'a <InternMacroRulesQuery as QueryDb<'_>>::GroupStorage, ) -> &'a Arc<<InternMacroRulesQuery as Query>::Storage>
§impl<'d> QueryDb<'d> for InternMacroRulesQuery
impl<'d> QueryDb<'d> for InternMacroRulesQuery
§type DynDb = dyn InternDatabase + 'd
type DynDb = dyn InternDatabase + 'd
§type Group = InternDatabaseStorage
type Group = InternDatabaseStorage
§type GroupStorage = InternDatabaseGroupStorage__
type GroupStorage = InternDatabaseGroupStorage__
Auto Trait Implementations§
impl Freeze for InternMacroRulesQuery
impl RefUnwindSafe for InternMacroRulesQuery
impl Send for InternMacroRulesQuery
impl Sync for InternMacroRulesQuery
impl Unpin for InternMacroRulesQuery
impl UnwindSafe for InternMacroRulesQuery
Blanket Implementations§
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
§impl<T> Cast for T
impl<T> Cast for T
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§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>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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>
otherwise. Read more