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Questions - condition-variable

Producer and Consumer Problem waiting threads

I tried to code Producer and Consumer Problem but after producing up to a certain value -(val) produce thread ends. but the consumer thread's condition variable waiting for notification but there is n...
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VEMBU KARTHICK T

c++

multithreading

mutex

condition-variable

unique-lock

Votes: 0

Answers: 1

Latest Answer

You need to have another variable which will indicate that your producer will produce no more so your consumer will know that it doesn't need to wait for the producer anymore. if it consumed the late...
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ixSci

Accurate timer based processing implementation using condition variable

I need a thread to perform processing every one second accurately. Suppose if the worker thread is busy on some operation that takes more than one second, I want the worker thread to miss the 1s expir...
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Raja Narayan

c++

linux

multithreading

condition-variable

Votes: 0

Answers: 1

Latest Answer

Unless threadExit is atomic, the code exhibits undefined behavior (race condition). All accesses to threadExit must be protected by a mutex, so also reads in while(!threadExit) and if(threadExit).... ...
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rustyx

Why does std::condition_variable wait() require a std::unique_lock arg?

My thread does not need to be locked. std::unique_lock locks thread on construction. I am simply using cond_var.wait() as a way to avoid busy waiting. I have essentially circumvented the auto-locking ...
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Chris Kouts

multithreading

c++11

condition-variable

unique-lock

Votes: 0

Answers: 1

Latest Answer

You need a lock to prevent this common newbie mistake: Producer thread produces something, Producer thread calls some_condition.notify_all(), Producer thread goes idle for a while, meanwhile: Consu...
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Solomon Slow

How to wake up multiple threads using condition variable

I want to run multiple threads every 100ms. In order to achieve that I thought of introducing std::mutex and std::condition_variable. The problem I'm facing is on what basis the threads should go into...
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Harry

c++

mutex

condition-variable

Votes: 0

Answers: 1

Latest Answer

As you mentioned about spurious wake-ups, thus my solution is to use another variable flag to let the waked thread can distinguish the correct notified case and spurious waked up case. So actually, wh...
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user8510613

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