Send a signal to a thread
#include <signal.h> int pthread_kill( pthread_t thread, int sig );
If the signal terminates a process, the cleanup of the terminated process occurs by default at the priority of the thread that sent the signal. As a QNX Neutrino extension, if you OR the SIG_TERMER_NOINHERIT flag (defined in <signal.h>) into sig, the cleanup occurs at the priority of the thread that received the signal.
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_kill() function sends the signal sig to the thread thread. The target thread and calling thread must be in the same process. If sig is zero, error checking is performed but no signal is sent.
POSIX 1003.1 THR
“Process termination” in the “Processes” chapter of the QNX Neutrino Programmer's Guide