#include "inputstr.h"
#include "dmxinputinit.h"
#include "dmxsigio.h"
#include "dmxevents.h"
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>

Macros
#define	O_ASYNC 0

#define	O_NONBLOCK FNONBLK

Functions
static void	dmxSigioHandler (int sig)

static void	dmxSigioHook (void)

static void	dmxSigioUnhook (void)

static void	dmxSigioAdd (DMXInputInfo *dmxInput)

static void	dmxSigioRemove (DMXInputInfo *dmxInput)

void	dmxSigioEnableInput (void)

void	dmxSigioDisableInput (void)

void	dmxSigioRegister (DMXInputInfo *dmxInput, int fd)

void	dmxSigioUnregister (DMXInputInfo *dmxInput)

Variables
static int	dmxFdCount = 0

static Bool	dmxInputEnabled = TRUE

Detailed Description

Provides an interface for handling SIGIO signals for input devices.

Macro Definition Documentation

#define O_ASYNC 0

Referenced by dmxSigioAdd(), and dmxSigioRemove().

#define O_NONBLOCK FNONBLK

Referenced by dmxSigioAdd(), dmxSigioRemove(), kbdLinuxOpenVT(), msLinuxInit(), ps2LinuxInit(), and usbInit().

Function Documentation

static void dmxSigioAdd ( DMXInputInfo * dmxInput )

static

References DMX_ACTIVESIGIO, DMX_NOSIGIO, DMX_USESIGIO, dmxFdCount, dmxSigioHook(), O_ASYNC, O_NONBLOCK, _DMXInputInfo::sigioAdded, _DMXInputInfo::sigioFd, _DMXInputInfo::sigioFdCount, and _DMXInputInfo::sigioState.

Referenced by dmxSigioEnableInput(), and dmxSigioRegister().

void dmxSigioDisableInput ( void )

Disable SIGIO handling. This removes the hanlder from the OS.

References dmxInputEnabled, dmxInputs, dmxNumInputs, and dmxSigioRemove().

Referenced by dmxWakeupHandler().

void dmxSigioEnableInput ( void )

Enable SIGIO handling. This instantiates the handler with the OS.

References dmxInputEnabled, dmxInputs, dmxNumInputs, and dmxSigioAdd().

Referenced by dmxSwitchReturn().

static void dmxSigioHandler ( int sig )

static

References _DMXLocalInputInfo::collect_events, _DMXInputInfo::devs, DMX_ACTIVESIGIO, DMX_NO_BLOCK, dmxCheckSpecialKeys(), dmxEnqueue(), dmxInputs, dmxMotion(), dmxNumInputs, _DMXInputInfo::numDevs, _DMXLocalInputInfo::pDevice, and _DMXInputInfo::sigioState.

Referenced by dmxSigioHook().

static void dmxSigioHook ( void )

static

References dmxSigioHandler().

Referenced by dmxSigioAdd().

void dmxSigioRegister	(	DMXInputInfo *	dmxInput,
		int	fd
	)

Make a note that the input device described in dmxInput will be using the file descriptor fd for SIGIO signals. Calls AddEnabledDevice ifi SIGIO handling has been enabled with dmxSigioEnableInput().

References DMX_MAX_SIGIO_FDS, DMX_USESIGIO, dmxFatal, dmxInputEnabled, dmxLog(), dmxSigioAdd(), _DMXInputInfo::sigioFd, _DMXInputInfo::sigioFdCount, and _DMXInputInfo::sigioState.

Referenced by dmxDeviceOnOff().

static void dmxSigioRemove ( DMXInputInfo * dmxInput )

static

References DMX_ACTIVESIGIO, DMX_NOSIGIO, DMX_USESIGIO, dmxFdCount, dmxSigioUnhook(), O_ASYNC, O_NONBLOCK, _DMXInputInfo::sigioAdded, _DMXInputInfo::sigioFd, _DMXInputInfo::sigioFdCount, and _DMXInputInfo::sigioState.