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title
GDD的博客
description
爱哭爱笑，爱吵爱闹
image
site name
GDD的博客
author
GDD
updated
2025-12-22 17:52:35
raw text
GDD的博客 GDD的博客 Home Archives 2021-08-22 多线程探索四-锁 多线程探索一-概念 多线程探索二-GCD 多线程探索三-NSOperation 多线程探索四-锁 iOS当中都有哪些锁 互斥锁 NSLock foundation 不支持重入 1 2 3 4 5 6 7 8 9 10 - (void)A { [lock lock]; B(); [lock unlock]; } - (void)B { [lock lock]; //do something [lock unlock]; } 上面的写法容易导致死锁，这种情况下就需要用递归锁来解决 pthread_mutex pthread_mutex是跨平台，iOS系统自带多线程技术pthread的线程锁 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 pthread_mutex_t pthreadmutex; /* #define PTHREAD_MUTEX_NORMAL 0 默认 #define PTHREAD_MUTEX_ERRORCHECK 1 检错锁 #define PTHREAD_MUTEX_RECURSIVE 2 递归锁 #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL 默认 */ pthread_mutex_init(&pthreadmutex, PTHREAD_MUTEX_NORMAL); dispatch_queue_t q = dispatch_get_global_queue(0, 0); __block int count = 0; for (int i = 0; i isCancelled - read-only ...
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dol updated
2025-12-22 17:52:35
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