| Updated: April 19, 2023 |
Function safety refers to whether it's safe to use the AOI library API functions in certain situations.
All API functions are thread-safe and behave as documented even in a multithreaded environment. These functions are neither interrupt-safe nor signal-safe. Don't call them in an interrupt handler or signal handler.
QNX Neutrino
| Safety | |
|---|---|
| Cancellation point | Read the Caveats |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |
It's possible to cancel any AOI library function call if it involves sending a message (MsgSend*()) between the application and the QNX Neutrino kernel. However, whether a message is sent varies not only from function to function but also for the same function, depending on the circumstances when it's called.