This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.0 KiB
102 lines
3.0 KiB
/** |
|
* Copyright (c) 2015-present, Facebook, Inc. |
|
* |
|
* This source code is licensed under the MIT license found in the |
|
* LICENSE file in the root directory of this source tree. |
|
*/ |
|
|
|
#import "RCTUIManagerUtils.h" |
|
|
|
#import <libkern/OSAtomic.h> |
|
|
|
#import "RCTAssert.h" |
|
|
|
char *const RCTUIManagerQueueName = "com.facebook.react.ShadowQueue"; |
|
|
|
static BOOL pseudoUIManagerQueueFlag = NO; |
|
|
|
dispatch_queue_t RCTGetUIManagerQueue(void) |
|
{ |
|
static dispatch_queue_t shadowQueue; |
|
static dispatch_once_t onceToken; |
|
dispatch_once(&onceToken, ^{ |
|
if ([NSOperation instancesRespondToSelector:@selector(qualityOfService)]) { |
|
dispatch_queue_attr_t attr = dispatch_queue_attr_make_with_qos_class(DISPATCH_QUEUE_SERIAL, QOS_CLASS_USER_INTERACTIVE, 0); |
|
shadowQueue = dispatch_queue_create(RCTUIManagerQueueName, attr); |
|
} else { |
|
shadowQueue = dispatch_queue_create(RCTUIManagerQueueName, DISPATCH_QUEUE_SERIAL); |
|
dispatch_set_target_queue(shadowQueue, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0)); |
|
} |
|
}); |
|
return shadowQueue; |
|
} |
|
|
|
BOOL RCTIsUIManagerQueue() |
|
{ |
|
static void *queueKey = &queueKey; |
|
static dispatch_once_t onceToken; |
|
dispatch_once(&onceToken, ^{ |
|
dispatch_queue_set_specific(RCTGetUIManagerQueue(), queueKey, queueKey, NULL); |
|
}); |
|
return dispatch_get_specific(queueKey) == queueKey; |
|
} |
|
|
|
BOOL RCTIsPseudoUIManagerQueue() |
|
{ |
|
if (RCTIsMainQueue()) { |
|
return pseudoUIManagerQueueFlag; |
|
} |
|
|
|
return NO; |
|
} |
|
|
|
void RCTExecuteOnUIManagerQueue(dispatch_block_t block) |
|
{ |
|
if (RCTIsUIManagerQueue() || RCTIsPseudoUIManagerQueue()) { |
|
block(); |
|
} else { |
|
dispatch_async(RCTGetUIManagerQueue(), ^{ |
|
block(); |
|
}); |
|
} |
|
} |
|
|
|
void RCTUnsafeExecuteOnUIManagerQueueSync(dispatch_block_t block) |
|
{ |
|
if (RCTIsUIManagerQueue() || RCTIsPseudoUIManagerQueue()) { |
|
block(); |
|
} else { |
|
if (RCTIsMainQueue()) { |
|
dispatch_semaphore_t mainQueueBlockingSemaphore = dispatch_semaphore_create(0); |
|
dispatch_semaphore_t uiManagerQueueBlockingSemaphore = dispatch_semaphore_create(0); |
|
|
|
// Dispatching block which blocks UI Manager queue. |
|
dispatch_async(RCTGetUIManagerQueue(), ^{ |
|
// Initiating `block` execution on main queue. |
|
dispatch_semaphore_signal(mainQueueBlockingSemaphore); |
|
// Waiting for finishing `block`. |
|
dispatch_semaphore_wait(uiManagerQueueBlockingSemaphore, DISPATCH_TIME_FOREVER); |
|
}); |
|
|
|
// Waiting for block on UIManager queue. |
|
dispatch_semaphore_wait(mainQueueBlockingSemaphore, DISPATCH_TIME_FOREVER); |
|
pseudoUIManagerQueueFlag = YES; |
|
// `block` execution while UIManager queue is blocked by semaphore. |
|
block(); |
|
pseudoUIManagerQueueFlag = NO; |
|
// Signalling UIManager block. |
|
dispatch_semaphore_signal(uiManagerQueueBlockingSemaphore); |
|
} else { |
|
dispatch_sync(RCTGetUIManagerQueue(), ^{ |
|
block(); |
|
}); |
|
} |
|
} |
|
} |
|
|
|
NSNumber *RCTAllocateRootViewTag() |
|
{ |
|
// Numbering of these tags goes from 1, 11, 21, 31, ..., 100501, ... |
|
static int64_t rootViewTagCounter = -1; |
|
return @(OSAtomicIncrement64(&rootViewTagCounter) * 10 + 1); |
|
}
|
|
|