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Questions - thread-synchronization

test_and_set makes the thread deadlock

#include<bits/stdc++.h> using namespace std; int cnt=0; int locked=0; int test_and_set(int * lock){ int temp=*lock; *lock=1; return temp; } void cntOnes(int t){ while(test_and_se...
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VEMBU KARTHICK T

c++

multithreading

thread-synchronization

busy-waiting

test-and-set

Votes: 0

Answers: 1

Latest Answer

First of all, Why should I not #include <bits/stdc++.h>? With that out of the way, unfortunately, your whole code is a great big data race. You simply cannot use ordinary variables to communic...
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Nate Eldredge

What if notifyAll is called at the start of critical section

What if notifyAll is called at the start of critical section where lock is not released and released at the end of cs(critical section). What will happen to waiting threads? Do the notifyAll will get ...
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Ankit Gautam

java

multithreading

java-threads

thread-synchronization

Votes: 0

Answers: 1

Latest Answer

When you call notifyAll() all waiting threads are reactivated and try to acquire the lock on the object on which you called notifyAll(). IMHO the correctness of your code is not sacrificed - no other ...
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Thomas Kl&#228;ger

Java Thread Cooperation with Three Threads Prints Extra Numbers

I am trying to print three AP sequences (in increments of 3) by three threads as follows: Thread-1 is printing the sequence 1, 4, 7, 10, ... Thread-2 is printing the sequence 2, 5, 8, ... Thread-3 is...
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Akash Das

java

multithreading

thread-safety

java-threads

thread-synchronization

Votes: 0

Answers: 1

Latest Answer

When a thread is woken up(wait->runnable), it needs to judge again whether the current counter is less than LIMIT, otherwise, it will continue to print until while (counter <= LIMIT) does not ho...
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zysaaa

Order of receiving Win32 Events

I have 3 different threads that use the Windows SetEvent API to set an event each. DWORD thFunc1(LPVOID) { ... SetEvent(event1); ... } DWORD thFunc2(LPVOID) { ... SetEvent(event2); ... } D...
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vedrajb

winapi

events

synchronization

thread-synchronization

Votes: 0

Answers: 1

Latest Answer

The WaitForMultipleObjects API call makes a single promise when more than one object entered the signaled state: If multiple objects become signaled, the function returns the index of the first handl...
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IInspectable

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