static void
suspend(pmEvent event, Bool undo)
{
int i;
InputInfoPtr pInfo;
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], FALSE);
}
pInfo = xf86InputDevs;
while (pInfo) {
DisableDevice(pInfo->dev, TRUE);
pInfo = pInfo->next;
}
OsBlockSIGIO();
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->PMEvent)
xf86Screens[i]->PMEvent(xf86Screens[i], event, undo);
else {
xf86Screens[i]->LeaveVT(xf86Screens[i]);
xf86Screens[i]->vtSema = FALSE;
}
}
xf86AccessLeave();
}
static void
xf86ReleaseKeys(DeviceIntPtr pDev)
{
KeyClassPtr keyc;
int i;
if (!pDev || !pDev->key)
return;
keyc = pDev->key;
/*
* Hmm... here is the biggest hack of every time !
* It may be possible that a switch-vt procedure has finished BEFORE
* you released all keys neccessary to do this. That peculiar behavior
* can fool the X-server pretty much, cause it assumes that some keys
* were not released. TWM may stuck alsmost completly....
* OK, what we are doing here is after returning from the vt-switch
* exeplicitely unrelease all keyboard keys before the input-devices
* are reenabled.
*/
for (i = keyc->xkbInfo->desc->min_key_code;
i < keyc->xkbInfo->desc->max_key_code; i++) {
if (key_is_down(pDev, i, KEY_POSTED)) {
OsBlockSIGIO();
QueueKeyboardEvents(pDev, KeyRelease, i, NULL);
OsReleaseSIGIO();
}
}
}
static void
ephyrWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
{
OsBlockSIGIO();
ephyrCursorScreen = pScreen;
miPointerWarpCursor(inputInfo.pointer, pScreen, x, y);
OsReleaseSIGIO();
}
/* ARGSUSED */
void
xf86Wakeup(pointer blockData, int err, pointer pReadmask)
{
fd_set *LastSelectMask = (fd_set *) pReadmask;
fd_set devicesWithInput;
InputInfoPtr pInfo;
if (err >= 0) {
XFD_ANDSET(&devicesWithInput, LastSelectMask, &EnabledDevices);
if (XFD_ANYSET(&devicesWithInput)) {
pInfo = xf86InputDevs;
while (pInfo) {
if (pInfo->read_input && pInfo->fd >= 0 &&
(FD_ISSET(pInfo->fd, &devicesWithInput) != 0)) {
OsBlockSIGIO();
/*
* Remove the descriptior from the set because more than one
* device may share the same file descriptor.
*/
FD_CLR(pInfo->fd, &devicesWithInput);
pInfo->read_input(pInfo);
OsReleaseSIGIO();
}
pInfo = pInfo->next;
}
}
}
if (err >= 0) { /* we don't want the handlers called if select() */
IHPtr ih; /* returned with an error condition, do we? */
for (ih = InputHandlers; ih; ih = ih->next) {
if (ih->enabled && ih->fd >= 0 && ih->ihproc &&
(FD_ISSET(ih->fd, ((fd_set *) pReadmask)) != 0)) {
ih->ihproc(ih->fd, ih->data);
}
}
}
if (xf86VTSwitchPending())
xf86VTSwitch();
}
static void
DoApmEvent(pmEvent event, Bool undo)
{
int i;
switch (event) {
#if 0
case XF86_APM_SYS_STANDBY:
case XF86_APM_USER_STANDBY:
#endif
case XF86_APM_SYS_SUSPEND:
case XF86_APM_CRITICAL_SUSPEND: /*do we want to delay a critical suspend? */
case XF86_APM_USER_SUSPEND:
/* should we do this ? */
if (!undo && !suspended) {
suspend(event, undo);
suspended = TRUE;
}
else if (undo && suspended) {
resume(event, undo);
suspended = FALSE;
}
break;
#if 0
case XF86_APM_STANDBY_RESUME:
#endif
case XF86_APM_NORMAL_RESUME:
case XF86_APM_CRITICAL_RESUME:
if (suspended) {
resume(event, undo);
suspended = FALSE;
}
break;
default:
OsBlockSIGIO();
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->PMEvent) {
xf86Screens[i]->PMEvent(xf86Screens[i], event, undo);
}
}
OsReleaseSIGIO();
break;
}
}
static void block_sigio_test(void)
{
#ifdef SIG_BLOCK
sigset_t current;
sigemptyset(¤t);
assert(!sig_is_blocked(SIGIO));
/* block once */
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(!sig_is_blocked(SIGIO));
/* block twice, nested */
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(!sig_is_blocked(SIGIO));
/* block all */
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(!sig_is_blocked(SIGIO));
/* block all nested */
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(!sig_is_blocked(SIGIO));
/* mix the two */
/* ABBA */
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(!sig_is_blocked(SIGIO));
/* ABAB */
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(!sig_is_blocked(SIGIO));
/* BAAB */
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(!sig_is_blocked(SIGIO));
/* BABA */
OsBlockSIGIO();
assert(sig_is_blocked(SIGIO));
OsBlockSignals();
assert(sig_is_blocked(SIGIO));
OsReleaseSIGIO();
assert(sig_is_blocked(SIGIO));
OsReleaseSignals();
assert(!sig_is_blocked(SIGIO));
#endif
}
int
xf86BlockSIGIO(void)
{
return OsBlockSIGIO();
}
int
xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
{
struct sigaction sa;
struct sigaction osa;
int i;
int installed = FALSE;
if (!xf86Info.useSIGIO)
return 0;
for (i = 0; i < MAX_FUNCS; i++) {
if (!xf86SigIOFuncs[i].f) {
if (xf86IsPipe(fd))
return 0;
OsBlockSIGIO();
#ifdef O_ASYNC
if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
fd, strerror(errno));
}
else {
if (fcntl(fd, F_SETOWN, getpid()) == -1) {
xf86Msg(X_WARNING, "fcntl(%d, F_SETOWN): %s\n",
fd, strerror(errno));
}
else {
installed = TRUE;
}
}
#endif
#ifdef I_SETSIG /* System V Streams - used on Solaris for input devices */
if (!installed && isastream(fd)) {
if (ioctl(fd, I_SETSIG, S_INPUT | S_ERROR | S_HANGUP) == -1) {
xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG): %s\n",
fd, strerror(errno));
}
else {
installed = TRUE;
}
}
#endif
if (!installed) {
OsReleaseSIGIO();
return 0;
}
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGIO);
sa.sa_flags = 0;
sa.sa_handler = xf86SIGIO;
sigaction(SIGIO, &sa, &osa);
xf86SigIOFuncs[i].fd = fd;
xf86SigIOFuncs[i].closure = closure;
xf86SigIOFuncs[i].f = f;
if (i >= xf86SigIOMax)
xf86SigIOMax = i + 1;
if (fd >= xf86SigIOMaxFd)
xf86SigIOMaxFd = fd + 1;
FD_SET(fd, &xf86SigIOMask);
OsReleaseSIGIO();
return 1;
}
/* Allow overwriting of the closure and callback */
else if (xf86SigIOFuncs[i].fd == fd) {
xf86SigIOFuncs[i].closure = closure;
xf86SigIOFuncs[i].f = f;
return 1;
}
}
return 0;
}
/*
* xf86VTSwitch --
* Handle requests for switching the vt.
*/
static void
xf86VTSwitch(void)
{
int i;
static int prevSIGIO;
InputInfoPtr pInfo;
IHPtr ih;
DebugF("xf86VTSwitch()\n");
#ifdef XFreeXDGA
if (!DGAVTSwitch())
return;
#endif
/*
* Since all screens are currently all in the same state it is sufficient
* check the first. This might change in future.
*/
if (xf86Screens[0]->vtSema) {
DebugF("xf86VTSwitch: Leaving, xf86Exiting is %s\n",
BOOLTOSTRING((dispatchException & DE_TERMINATE) ? TRUE : FALSE));
#ifdef DPMSExtension
if (DPMSPowerLevel != DPMSModeOn)
DPMSSet(serverClient, DPMSModeOn);
#endif
for (i = 0; i < xf86NumScreens; i++) {
if (!(dispatchException & DE_TERMINATE))
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], FALSE);
}
/*
* Keep the order: Disable Device > LeaveVT
* EnterVT > EnableDevice
*/
for (ih = InputHandlers; ih; ih = ih->next)
xf86DisableInputHandler(ih);
for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) {
if (pInfo->dev) {
if (!pInfo->dev->enabled)
pInfo->flags |= XI86_DEVICE_DISABLED;
xf86ReleaseKeys(pInfo->dev);
ProcessInputEvents();
DisableDevice(pInfo->dev, TRUE);
}
}
OsBlockSIGIO();
for (i = 0; i < xf86NumScreens; i++)
xf86Screens[i]->LeaveVT(xf86Screens[i]);
for (i = 0; i < xf86NumGPUScreens; i++)
xf86GPUScreens[i]->LeaveVT(xf86GPUScreens[i]);
xf86AccessLeave(); /* We need this here, otherwise */
if (!xf86VTSwitchAway()) {
/*
* switch failed
*/
DebugF("xf86VTSwitch: Leave failed\n");
xf86AccessEnter();
for (i = 0; i < xf86NumScreens; i++) {
if (!xf86Screens[i]->EnterVT(xf86Screens[i]))
FatalError("EnterVT failed for screen %d\n", i);
}
for (i = 0; i < xf86NumGPUScreens; i++) {
if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i]))
FatalError("EnterVT failed for gpu screen %d\n", i);
}
if (!(dispatchException & DE_TERMINATE)) {
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE);
}
}
dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
pInfo = xf86InputDevs;
while (pInfo) {
if (pInfo->dev && (pInfo->flags & XI86_DEVICE_DISABLED) == 0)
EnableDevice(pInfo->dev, TRUE);
pInfo->flags &= ~XI86_DEVICE_DISABLED;
pInfo = pInfo->next;
}
for (ih = InputHandlers; ih; ih = ih->next)
xf86EnableInputHandler(ih);
OsReleaseSIGIO();
}
else {
#ifdef XF86PM
if (xf86OSPMClose)
xf86OSPMClose();
xf86OSPMClose = NULL;
#endif
for (i = 0; i < xf86NumScreens; i++) {
/*
* zero all access functions to
* trap calls when switched away.
*/
xf86Screens[i]->vtSema = FALSE;
}
if (xorgHWAccess)
xf86DisableIO();
}
}
else {
DebugF("xf86VTSwitch: Entering\n");
if (!xf86VTSwitchTo())
return;
#ifdef XF86PM
xf86OSPMClose = xf86OSPMOpen();
#endif
if (xorgHWAccess)
xf86EnableIO();
xf86AccessEnter();
for (i = 0; i < xf86NumScreens; i++) {
xf86Screens[i]->vtSema = TRUE;
if (!xf86Screens[i]->EnterVT(xf86Screens[i]))
FatalError("EnterVT failed for screen %d\n", i);
}
for (i = 0; i < xf86NumGPUScreens; i++) {
xf86GPUScreens[i]->vtSema = TRUE;
if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i]))
FatalError("EnterVT failed for gpu screen %d\n", i);
}
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE);
}
/* Turn screen saver off when switching back */
dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
pInfo = xf86InputDevs;
while (pInfo) {
if (pInfo->dev && (pInfo->flags & XI86_DEVICE_DISABLED) == 0)
EnableDevice(pInfo->dev, TRUE);
pInfo->flags &= ~XI86_DEVICE_DISABLED;
pInfo = pInfo->next;
}
for (ih = InputHandlers; ih; ih = ih->next)
xf86EnableInputHandler(ih);
OsReleaseSIGIO();
}
}
