Thread and PhAB

QNX USERS QNX6 - OS
1

Hi

I have a problem. In my application made with PhAB I make a Thread that continuously scan the serial port, when I receive the information I need to dislpay it in a text box. I put in the thread routine a statement PtSetResource, but when my thread do this my application crash and send me a Segmentation Fault.

My thread has no attributes, is this the problem?

Thanks

2

You might want to show us the code that calls PtSetResource(). Also, when you update widgets from multiple threads there is a routine you should bracket the call with. Lastly, have you isolated the exactly place that causes the crash, and is it PtSetResource()?

3

Photon’s functions are not thread-safe. Thus enclose the PtSetResource by PtEnter and PtLeave.

4

do like this:

int flags = PtEnter(0);
PtSetResource(…);
PtLeave(flags);

  • this is works ;)
5

or:

PtEnter(0);
PtSet…;
PtLeave(0);

6

Thanks.

The functions:

PtEnter(0);
PtSet…;
PtLeave(0);

Solves my problem

My sincere Thanks