FlutterThreadSynchronizer(TestUtils) Category Reference

#import <FlutterThreadSynchronizer.h>

Instance Methods
(nullable instancetype)	- initWithMainQueue:
(BOOL)	- isWaitingWhenMutexIsAvailable
(void)	- blockUntilFrameAvailable

Detailed Description

Definition at line 78 of file FlutterThreadSynchronizer.h.

Method Documentation

blockUntilFrameAvailable

- (void) blockUntilFrameAvailable

Blocks current thread until there is frame available. Used in FlutterEngineTest.

Extends class FlutterThreadSynchronizer.

Definition at line 26 of file FlutterThreadSynchronizer.mm.

                                 {
  std::unique_lock<std::mutex> lock(_mutex);
  [self drain];
 
  _beginResizeWaiting = YES;
  while (![self someViewsHaveFrame] && !_shuttingDown) {
    _condBlockBeginResize.wait(lock);
    [self drain];
  }
 
  _beginResizeWaiting = NO;
}

initWithMainQueue:

- (nullable instancetype) initWithMainQueue:

(nonnull dispatch_queue_t)

queue

Creates a FlutterThreadSynchronizer that uses the specified queue as the platform thread.

Extends class FlutterThreadSynchronizer.

isWaitingWhenMutexIsAvailable

- (BOOL) isWaitingWhenMutexIsAvailable

Blocks current thread until the mutex is available, then return whether the synchronizer is waiting for a correct commit during resizing.

After calling an operation of the thread synchronizer, call this method, and when it returns, the thread synchronizer can be at one of the following 3 states:

1. The operation has not started at all (with a return value FALSE.)
2. The operation has ended (with a return value FALSE.)
3. beginResizeForView: is in progress, waiting (with a return value TRUE.)

By eliminating the 1st case (such as using the notify callback), we can use this return value to decide whether the synchronizer is in case 2 or case 3, that is whether the resizing is blocked by a mismatching commit.

Extends class FlutterThreadSynchronizer.

Definition at line 26 of file FlutterThreadSynchronizer.mm.

                                      {
  std::unique_lock<std::mutex> lock(_mutex);
  return _beginResizeWaiting;
}

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The documentation for this category was generated from the following file:

• shell/platform/darwin/macos/framework/Source/FlutterThreadSynchronizer.h