FlutterBackBufferCache Class Reference

#import <FlutterSurfaceManager.h>

Inheritance diagram for FlutterBackBufferCache:

Instance Methods
(nullable FlutterSurface *)	- removeSurfaceForSize:
(void)	- replaceSurfaces:
(NSUInteger)	- count

Detailed Description

Cache of back buffers to prevent unnecessary IOSurface allocations.

Definition at line 81 of file FlutterSurfaceManager.h.

Method Documentation

count

- (NSUInteger) count

Returns number of surfaces currently in cache. Used for tests.

Definition at line 309 of file FlutterSurfaceManager.mm.

                    {
  @synchronized(self) {
    return _surfaces.count;
  }
}

Referenced by flutter::testing::TEST().

removeSurfaceForSize:

- (nullable FlutterSurface *) removeSurfaceForSize:

(CGSize)

size

Removes surface with given size from cache (if available) and returns it.

Definition at line 285 of file FlutterSurfaceManager.mm.

                                                :(CGSize)size {
  @synchronized(self) {
    for (FlutterSurface* surface in _surfaces) {
      if (CGSizeEqualToSize(surface.size, size)) {
        // By default ARC doesn't retain enumeration iteration variables.
        FlutterSurface* res = surface;
        [_surfaces removeObject:surface];
        return res;
      }
    }
    return nil;
  }
}

References FlutterSurface::size.

replaceSurfaces:

- (void) replaceSurfaces:

(nonnull NSArray<FlutterSurface*>*)

surfaces

Removes all cached surfaces replacing them with new ones.

Definition at line 299 of file FlutterSurfaceManager.mm.

                       :(nonnull NSArray<FlutterSurface*>*)surfaces {
  @synchronized(self) {
    [_surfaces removeAllObjects];
    [_surfaces addObjectsFromArray:surfaces];
  }
 
  // performSelector:withObject:afterDelay needs to be performed on RunLoop thread
  [self performSelectorOnMainThread:@selector(reschedule) withObject:nil waitUntilDone:NO];
}

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The documentation for this class was generated from the following files:

• shell/platform/darwin/macos/framework/Source/FlutterSurfaceManager.h
• shell/platform/darwin/macos/framework/Source/FlutterSurfaceManager.mm