hi all,

I would like to test serial port handling in Linux with jna. Open, read and close is working well, but I cannot install signal handler. Seems to be I am new in jna and perhaps I made some mistake in declarations of signal handler. Could anybody help me to install signal handler?

return value of sigaction (saRes) is 0, but signal.callback never called:(

here is the code snippet:

------------------------------------------------------------------ SignalHandler_t signal = new SignalHandler_t (){ @Override public void callback(int signal) { int st = 0; CLibrary.INSTANCE.ioctl(dev, CLibrary.TIOCMGET, st); st &= ~CLibrary.TIOCM_RTS; CLibrary.INSTANCE.ioctl(dev, CLibrary.TIOCMSET, st); st |= CLibrary.TIOCM_RTS; CLibrary.INSTANCE.ioctl(dev, CLibrary.TIOCMSET, st); }};

...

SigActionStruct saio = new SigActionStruct(); saio.sa_handler = this.signal; CLibrary.INSTANCE.sigemptyset(saio.sa_mask); saio.sa_flags = 0; saio.sa_restorer = null; int saRes = CLibrary.INSTANCE.sigaction(CLibrary.SIGIO, saio, null);

------------------------------------------------------------------

public interface SignalHandler_t extends Callback { public void callback(int signal); }

public interface SignalAction extends Callback { public void callback (int a, Pointer info, Pointer p); }

public static class SigSet_t extends Structure { public long sig[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; }

public interface SignalRestorer extends Callback { public void callback(); }

public static class SigActionStruct extends Structure { public SignalHandler_t sa_handler; public SignalAction sa_sigaction; public SigSet_t sa_mask; public int sa_flags; public SignalRestorer sa_restorer; }