用pthread进行进程间同步 - bw_0927 - 博客园
网页如果持有 mutex 的线程退出，另外一个线程在 pthread_mutex_lock 的时候会返回 EOWNERDEAD。这时候你需要调用 pthread_mutex_consistent 函数来清除这种状态，否则后果自负。 写成代码就是这样子： int r = pthread_mutex_lock(lock); if (r == EOWNERDEAD) pthread_mutex_consistent (lock);
linux中PTHREAD_PROCESS_SHARED属性的应用示例 - CSDN博客
网页2023年12月24日 · PTHREAD_PROCESS_SHARED是一个宏定义，用于指定使用互斥锁（mutex）或条件变量（condition variable）时的进程共享属性。 当创建互斥锁或条件变量时，可以通过设置属性参数来指定它们是否可在多个进程之间共享。
Using pthread mutex shared between processes correctly
网页2022年12月4日 · It is up to you to ensure that only one process calls pthread_mutex_init() on the mutex, and that no process tries to operate on the mutex until that call has successfully returned. For example, with POSIX shm_open() shared memory regions, you can have the processes try to open the region with the O_CREAT and O_EXCL flags, so that exactly one ...
pthread_mutexattr_getpshared(3) — Linux manual page - man7.org
网页pthread_mutexattr_setpshared() sets the value of the process- shared attribute of the mutex attributes object referred to by attr to the value specified in pshared. If attr does not refer to an initialized mutex attributes object, the behavior is undefined.
pthreads(7) — Linux manual page - man7.org
网页POSIX.1 specifies a set of interfaces (functions, header files) for threaded programming commonly known as POSIX threads, or Pthreads. A single process can contain multiple threads, all of which are executing the same program.
pthread_spin_init(3) — Linux manual page - man7.org
网页PTHREAD_PROCESS_SHARED The spin lock may be operated on by any thread in any process that has access to the memory containing the lock (i.e., the lock may be in a shared memory object that is shared among multiple processes). Calling pthread_spin_init () on a spin lock that has already been initialized results in undefined behavior.
c - Interprocess mutex with pthreads - Stack Overflow
网页2011年6月25日 · sem_init requires a nonzero pshared argument to be shared, just like a mutex would require the pshared attribute. There's no reason to prefer semaphores over mutexes for this, and in fact mutexes would be better because you could use a robust mutex which allows you to handle the (very real!) case where one …
多线程编程指南 - Oracle
网页读写锁属性可以为以下值之一：. PTHREAD_PROCESS_SHARED. 描述: 允许可访问用于分配读写锁的内存的任何线程对读写锁进行处理。. 即使该锁是在由多个进程共享的内存中分配的，也允许对其进行处理。. PTHREAD_PROCESS_PRIVATE. 描述: 读写锁只能由某些线程处理，这些线程 ...
Sharing pthreads locks between processes - That's Good Enough
网页2013年1月31日 · The POSIX threads library has some useful primitives for locking between multiple threads, primarily mutexes and condition variables. Typically these are only effective to lock between threads within the same process. However, pthreads defines a PTHREAD_PROCESS_SHARED attribute for both of these primitives which can be used to specify that they ...
网页Shared memory programming: Overview. POSIX pthreads. Critical section & thread synchronization. Mutexes. Producer-consumer synchronization and semaphores. Barriers and condition variables. Read-write locks. Thread safety. Execution Flow on one-core or multi-core systems.
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