Questions tagged [pthreads]
Pthreads (POSIX Threads) is a standardised C-based API for creating and manipulating threads. It is currently defined by POSIX.1-2008 (IEEE Std 1003.1, 2013 Edition / The Open Group Base Specifications Issue 7).
pthreads
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How should I initialize pthread mutexes in shared memory, since at program start they can be already initialized?
I'm using shared, robust pthread mutexes to protect some shared memory areas I have in my application. Since my program is managed by a systemd service, it could potentially be restarted, in which ...
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If the Linux kernel reassigns a PID, can this cause errors/UB when using C pthread mutexes?
If I'm getting it right, is it possible in the Linux pthread C API to use robust mutexes, that can be shared across processes (by placing them in shared memory), and that allows you to acquire the ...
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negative value in __writer member variable of struct pthread_rwlock_t [closed]
I am debugging one deadlock case in my application running on RHEL 7(glibc 2.17). When inspecting using gdb, at the time of deadlock, I see the following values on printing std::shared_timed_mutex(...
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Thread asynchronous waiting signaling
I need a C code for a program which N threads can communicate with eachother.
each thread id can wait for whichever thread id it wants.
each thread id can signal which ever thread id it wants.
they ...
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Can pthread_exit be used with noexcept functions?
I have a model where minimal work happens on main thread, and almost all work happens on worker threads. I want to ensure that the main thread NEVER dies and ALWAYS returns back to the OS.
Since, all ...
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Repeated short identical parallel jobs
I have an algorithm that requires many parallel reruns of the same code. The code is short and finishes in less than a microsecond. This will be run millions of times which creates some problems when ...
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pthreads_cross.h error: conflicting declaration of C function from pthread.h
I have a cmake project where I'm using vcpkg as a package manager. One of the dependencies I need is the apriltag dependency which is dependent on the pthread dependency.
the project seems to ...
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Can I run the Pthreads library directly on a virtual machine
So, I have installed a virtual machine (kali linux), I would like to know if I can complete my assignment, which requires multiple processes to be created and managed using Pthreads library in C. She ...
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What does it mean for CMake to find a "pthread-compatible" library?
CMake's FindThreads script documentation says that the variable CMAKE_USE_PTHREADS_INIT will be set "if the found thread library is pthread compatible."
What does that mean? If it's an ...
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CMake Error: Could Not Find pthread Library While Installing ns-allinone-3.37 and opengym
I installed ns-allinone-3.37 and the opengym library in the /home/chae/ns-allinone-3.37/ns-3.37 directory.
The next step was to run the command cmake . in that directory.
(ns3-gym-env) chae@chae-B660M-...
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problem using pthread_cond_signal and pthread_cond_timedwait
I have a small program with two threads sending signal to each other.
The program first works as expected but stop after various runs as the pthread_cond_timedwait run into a timeout.
For my test I ...
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How to manage responses from multiple measuring devices to a single TCP/IP port for time sensitive applications?
I am very new to Socket programming, and I would appreciate any input you have in my question.
I am a physicist working on a project where the time intervals and coincidence of measurements play a big ...
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pthread_cancel on blocking read doesn't work
Simple code snippet hanging forever:
#include <csignal>
#include <mutex>
#include <print>
#include <iostream>
void *routine(void *arg) {
pthread_setcancelstate(...
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Trying to implement a barrier for pthreads in C++ using pthread condition variables and mutexes
I am currently trying to implement a barrier to control a group of threads. Te barrier class needs a constructor, destructor, and the wait method which I believe I have already created correcty. The ...
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Why can't I lock a mutex in one thread an unlock it in another one? [closed]
I wrote the following openmp code:
omp_set_lock(&lock);
#pragma omp task
{
do_work();
omp_unset_lock(&lock);
}
and it seems to work. However, the omp standard says that only a ...
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