Questions tagged [recursive-mutex]

A recursive mutex (reentrant mutex) is a mutex which may be locked multiple times by the same process or thread, without causing a deadlock.

A recursive mutex (reentrant mutex) is a mutex which may be locked multiple times by the same process or thread, without causing a deadlock.

pthread_mutex, PTHREAD_MUTEX_RECURSIVE and memory-barrier

In https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_12 it is said that recursive mutexes need not to synchronize memory. In my understanding, they therefore do not need to establish a memory-barrier. Should I then use…

posix mutex recursive-mutex

asked Dec 14 '22 at 09:56

wimalopaan

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When can mutex->data.nusers be 4294967295?

I have a core dump file where pthread_mutex_destroy() has returned an error, probably because in the pthread_mutex_t data structure the __nusers field is set to 4294967295 (0xFFFFFFFF). Here are the full values: mMutex = { __data = { …

c++ linux pthreads mutex recursive-mutex

asked Feb 25 '21 at 12:13

oliver

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Mutex deadlock in with lock owner set to 0 in both the process

I am using a recursive mutex which is defined in shared memory for synchronization between two processes. I am seeing a deadlock between two processes but when I debugged core file, I found out that neither process A nor process B is owning the…

multithreading pthreads deadlock thread-synchronization recursive-mutex

asked Jun 30 '20 at 13:34

Rahul Bhardwaj

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2 answers

pthread_recursive_mutex - assertion failed

I'm using ROS (Robot operating system) framework. If you are familiar with ROS, in my code, I'm not using activity servers. Plainly using publishers, subscribers and services. Unfortunately, I'm facing issue with pthread_recursive_mutex error. The…

boost pthreads ros recursive-mutex

asked May 06 '20 at 22:21

Venkatavaradhan

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2 answers

Can't initiate Recursive Mutex

I am trying to initiate a recursive mutex but unable to succeed. This is my code: void init_locks_and_conds() { int type; // TODO DELETE if (pthread_mutexattr_init(&dead_or_alive_attr)) {perror(""); exit(1);} else if…

c mutex recursive-mutex

asked Jan 08 '20 at 22:03

Daniel

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0 answers

Can a C++ thread pause and store its context to rent to another? (thread ID borrowing)

Can a C++ thread A suspend its execution by storing that "pause" P in an object that can then be used in another thread B to run a function F in thread A? B could use P to unlock a mutex owned by A. Or F could lock a recursive mutex that was already…

c++ multithreading mutex recursive-mutex

asked Dec 01 '19 at 15:59

curiousguy

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2 answers

Can a thread call .WaitOne() of a Mutex more than once before calling .ReleaseMutex() and vice versa?

In my code, it would be convenient if my thread calls .WaitOne() more than once before calling .ReleaseMutex(). And vice versa: Calling .ReleaseMutex() a few times before restarting a loop which begins with call to .WaitOne(). Some operating…

c# mutex recursive-mutex

asked May 15 '18 at 22:19

Doug Null

7,989
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0 answers

Having multiple reader locks in a single thread

I have data coupled with a Lock = boost::shared_mutex. I am locking data access with reader locks ReadLock = boost::shared_lock and writer locks WriteLock = boost::unique_lock. Obviously, lots of readers may be reading the data at a…

c++ multithreading boost-mutex recursive-mutex unique-lock

asked Apr 11 '18 at 14:00

Bill Kotsias

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1 answer

How to avoid recursive_mutex

I have a case of recursive_mutex which I'm trying to solve. Here is the piece of code which explains the problem. void OnConnectionDisconnected() { boost::lock_guard lock ( m_mutexConnectionSet ); …

c++ multithreading boost synchronization recursive-mutex

asked Nov 14 '14 at 11:38

user832096

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0 answers

My recursive mutex vs pthread_mutex_t (type: recursive) (repost, push)

I was wondering if I could make a recursive mutex type on my own with a PTHREAD_MUTEX_ERRORCHECK mutex, this is the result: typedef struct { pthread_mutex_t mutex; uint32_t deadlocks; } pthread_recursivemutex_t; int…

c recursion pthreads mutex recursive-mutex

asked Jul 21 '14 at 00:04

Marco

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Is there a portable way to statically initialise a recursive mutex?

According to POSIX, I can statically initialise a mutex this way: pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; However, what if I want the mutex to be recursive? Mutexes are non-recursive be default and there's no way to supply mutex attributes…

pthreads posix mutex recursive-mutex

asked Dec 07 '12 at 07:57

Martin Sustrik

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Questions tagged [recursive-mutex]

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