GSGlyph withLayerReadLock(_:) — Glyphs API Documentation

func withLayerReadLock<E, R>(_ body: () throws(E) -> R) throws(E) -> R where E : Error

Parameters

body: The operation to perform.

Return Value

The value returned by the operation.

Discussion

This does not by itself protect mutable contents of individual layers.

See Also

Locking

setLockedFast(_:)setLockedFast:setLockedFast_
Changes whether editing the glyph is disabled without registering undo.
initLock()initLockinitLock
Prepares the glyph for synchronized access.
hasLock()hasLockhasLock
Whether the glyph has been prepared for synchronized access.
lockRead()lockReadlockRead
Acquires shared access to glyph-level cached state.
withReadLock(_:)
Performs an operation while holding shared access to glyph-level cached state.
unlockRead()unlockReadunlockRead
Releases shared access acquired with lockRead()lockReadlockRead.
lockWrite()lockWritelockWrite
Acquires exclusive access to glyph-level cached state.
withWriteLock(_:)
Performs an operation while holding exclusive access to glyph-level cached state.
unlockWrite()unlockWriteunlockWrite
Releases exclusive access acquired with lockWrite()lockWritelockWrite.
lockReadLayers()lockReadLayerslockReadLayers
Acquires shared access to the layer collection.
unlockReadLayers()unlockReadLayersunlockReadLayers
Releases shared access acquired with lockReadLayers()lockReadLayerslockReadLayers.
lockWriteLayers()lockWriteLayerslockWriteLayers
Acquires exclusive access to the layer collection.
withLayerWriteLock(_:)
Performs an operation while holding exclusive access to the layer collection.
unlockWriteLayers()unlockWriteLayersunlockWriteLayers
Releases exclusive access acquired with lockWriteLayers()lockWriteLayerslockWriteLayers.