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So finally I want to close this thread with my conclusion concerning this problem.
It seems to be a problem of Linux. That is what someone told me in another newsgroup. He tried to implement a...

What do you mean? How do install the signal handlers when using pthreads or setcontext etc?

I've isolated the source of error a little bit more. It is because of using the third parameter of the signal handler for saving the context of the thread function. If I pass the parameter context to...

Concerning my concrete problem I found out that the segmentation fault occurs while calling swapcontext() in the while-loop of scheduler_function(). I also tried to run the program without using an...

Sorry for the late reaction, I wasn't online during the holidays.
@jim mcnamara: How can I detect whether I am overflowing the signal stack or not? And what do you mean with context referencing?...

So I've tested it on a OpenSuse machine. And there it behaves a little bit different. Instead of finishing there will be raised a segmentation fault. Here is the sample output for UPPER_BOUND =...

Ok...I've tried to reduce the code. Maybe it is easier to understand and nobody is scared by the big number of lines. I removed most of the if conditions. So let's take a second try! :)


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Sure, if you think that there is a better chance for an answer. At first I thought that this is more low-level programming. But anyway...can you move it to the High Level Programming Subforum?!
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Hi guys,
this is my first posting, so at first hi to everyone! ;)

I have a problem with ucontext_t in connection with signal handling. I want to simulate a preemptive scheduler. I am using the...