Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I’m using CreateThread() for my 4 threads.
I would like to run all my threads simultaneously, but wait for all 4 to finish before continuing with the main thread.
I used an int and increased it at the start of the thread, then decreased it at the end, then in my main thread I used a while loop to hold while the number is over a certain value… however this didn’t seem to work correctly.
Is this possible?
You can use the mechanism of signaled states and the WaitForMultipleObjects function to wait for the events or threads themselves (pointed to by their handles) to reach a signalled state.
By simply sharing a single variable among those threads you’re probably running into synchronization problems, especially when they are spread among your CPU’s cores.
If you want to modify a shared value atomically without using synchronization mechanisms, use the “Interlocked*” functions like InterlockedIncrement, although that doesn’t completely guarantee that there will be no problems. Don’t use that method as a synchronization mechanism anyway.