Pthreads APIs - User's Guide and Reference

Signals APIs

Signal APIs can be used to manipulate signals in a threaded process. Signals can be sent to individual threads, the signal mask of a thread can be changed. When a signal is sent to a thread, the actions associated with the signal (like stopping, continuing or terminating) never effect only the thread, all signal actions are defined to effect the process. When a signal handler is invoked, it is invoked in the thread that the signal was delivered to.

Using signals correctly in a multi-threaded process can be difficult. The recommended way to handle signals in a multi-threaded process is to mask off all signals in all threads, then use the signals sigwait() API in a single thread to wait for any signal to be delivered to the process.

pthread_kill()--Send a Signal to a Thread
pthread_sigmask()--Set or Get the Signal Mask
pthread_signal_to_cancel_np()--Convert Signals to Cancel Requests

pthread_kill()--Send a Signal to a Thread
pthread_sigmask()--Set or Get the Signal Mask
pthread_signal_to_cancel_np()--Convert Signals to Cancel Requests

rchthrds@us.ibm.com