Module rustc_data_structures::sync
[−]
[src]
This mdoule defines types which are thread safe if cfg!(parallel_queries) is true.
Lrc
is an alias of either Rc or Arc.
Lock
is a mutex.
It internally uses parking_lot::Mutex
if cfg!(parallel_queries) is true,
RefCell
otherwise.
RwLock
is a read-write lock.
It internally uses parking_lot::RwLock
if cfg!(parallel_queries) is true,
RefCell
otherwise.
LockCell
is a thread safe version of Cell
, with set
and get
operations.
It can never deadlock. It uses Cell
when
cfg!(parallel_queries) is false, otherwise it is a Lock
.
MTLock
is a mutex which disappears if cfg!(parallel_queries) is false.
rustc_global!
gives us a way to declare variables which are intended to be
global for the current rustc session. This currently maps to thread-locals,
since rustdoc uses the rustc libraries in multiple threads.
These globals should eventually be moved into the Session
structure.
rustc_erase_owner!
erases a OwningRef owner into Erased or Erased + Send + Sync
depending on the value of cfg!(parallel_queries).
Structs
Lock | |
LockCell | |
LockGuard |
A wrapper type for a mutably borrowed value from a |
Lrc |
A single-threaded reference-counting pointer. 'Rc' stands for 'Reference Counted'. |
MTLock | |
ReadGuard |
Wraps a borrowed reference to a value in a |
RwLock |
A mutable memory location with dynamically checked borrow rules |
WriteGuard |
A wrapper type for a mutably borrowed value from a |
Traits
Send | |
Sync |
Functions
assert_send_sync_val | |
assert_sync |
Type Definitions
MetadataRef |