mirror of
https://github.com/TextureGroup/Texture.git
synced 2026-04-07 19:17:39 +00:00
Garrett Moon
c5f69f0b01
* Renames AS_EXTERN and ASViewController To ASDK_EXTERN and ASDKViewController. This is to avoid conflicting with AuthenticationServices in Xcode 12 * Fix up examples and docs * Add bit about updating ASViewController rename
48 lines
1.3 KiB
Objective-C
48 lines
1.3 KiB
Objective-C
//
|
|
// ASRecursiveUnfairLock.h
|
|
// Texture
|
|
//
|
|
// Copyright (c) Pinterest, Inc. All rights reserved.
|
|
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
|
|
#import <Foundation/Foundation.h>
|
|
#import <AsyncDisplayKit/ASBaseDefines.h>
|
|
#import <pthread/pthread.h>
|
|
#import <os/lock.h>
|
|
|
|
// Note: We don't use ATOMIC_VAR_INIT here because C++ compilers don't like it,
|
|
// and it literally does absolutely nothing.
|
|
#define AS_RECURSIVE_UNFAIR_LOCK_INIT ((ASRecursiveUnfairLock){ OS_UNFAIR_LOCK_INIT, NULL, 0})
|
|
|
|
NS_ASSUME_NONNULL_BEGIN
|
|
|
|
OS_UNFAIR_LOCK_AVAILABILITY
|
|
typedef struct {
|
|
os_unfair_lock _lock OS_UNFAIR_LOCK_AVAILABILITY;
|
|
_Atomic(pthread_t) _thread;
|
|
int _count; // Protected by lock
|
|
} ASRecursiveUnfairLock;
|
|
|
|
/**
|
|
* Lock, blocking if needed.
|
|
*/
|
|
ASDK_EXTERN OS_UNFAIR_LOCK_AVAILABILITY
|
|
void ASRecursiveUnfairLockLock(ASRecursiveUnfairLock *l);
|
|
|
|
/**
|
|
* Try to lock without blocking. Returns whether we took the lock.
|
|
*/
|
|
ASDK_EXTERN OS_UNFAIR_LOCK_AVAILABILITY
|
|
BOOL ASRecursiveUnfairLockTryLock(ASRecursiveUnfairLock *l);
|
|
|
|
/**
|
|
* Unlock. Calling this on a thread that does not own
|
|
* the lock will result in an assertion failure, and undefined
|
|
* behavior if foundation assertions are disabled.
|
|
*/
|
|
ASDK_EXTERN OS_UNFAIR_LOCK_AVAILABILITY
|
|
void ASRecursiveUnfairLockUnlock(ASRecursiveUnfairLock *l);
|
|
|
|
NS_ASSUME_NONNULL_END
|