//
// Read characters from the terminals and puts them in the buffers.
// When a buffer is full verify its content against the inputs.
//
void
term_handler(int type, void *arg) {
int result;
int status;
char ch;
int unit = (int) arg;
int i;
// Get the device status for the terminal.
result = USLOSS_DeviceInput(USLOSS_TERM_DEV, unit, &status);
if (result != USLOSS_DEV_OK) {
USLOSS_Console("Something is wrong with terminal %d!!", unit);
USLOSS_Halt(1);
}
// If the status is "USLOSS_DEV_BUSY" then a character has been received.
if (USLOSS_TERM_STAT_RECV(status) == USLOSS_DEV_BUSY) {
ch = USLOSS_TERM_STAT_CHAR(status); // Get the characte
USLOSS_Console("%d: %c\n", unit, ch);
i = counts[unit]++;
buffers[unit][i] = ch;
if (i == NUMCHARS-1) {
assert(!strncmp(inputs[unit], buffers[unit], NUMCHARS));
done++;
}
}
}
static void terminalHandler(int dev, void *arg) {
long unit = (long) arg;
if (debugflag2 && DEBUG2) {
USLOSS_Console("terminalHandler(): dev = %d\n", dev);
USLOSS_Console("terminalHandler(): unit = %d\n", unit);
}
int termResult;
// check for valid values
if (dev != USLOSS_TERM_DEV || unit < 0 || unit > USLOSS_TERM_UNITS) {
USLOSS_Console("termHandler(): Bad values\n");
USLOSS_Halt(1);
}
// make sure our box still exists
if (termBoxes[unit].mboxID == -1) {
USLOSS_Console("Term mailbox does not exist, unit\n");
USLOSS_Halt(1); // might need to reutn instead
}
int result = USLOSS_DeviceInput(USLOSS_TERM_DEV, unit, &termResult);
// if (debugflag2 && DEBUG2) {
// USLOSS_Console("terminalHandler(): sending now from dev %d to mbox %d value %s\n", dev, termBoxes[unit].mboxID, termResult);
// }
MboxCondSend(termBoxes[unit].mboxID, &termResult, sizeof(termResult));
if (result != USLOSS_DEV_OK) {
USLOSS_Console("termHandler(): USLOSS_DeviceInput is not ok.\n");
USLOSS_Halt(1);
}
}
static void clockHandler2(int dev, void *arg) {
long unit = (long) arg;
int clockResult;
// check if dispatcher should be called
if (readCurStartTime() >= 80000) {
timeSlice();
}
// inc that a clock interrupt happened
clockTicks++;
USLOSS_DeviceInput(dev, unit, &clockResult);
// every fith interrupt do a conditional send to its mailbox
if (clockTicks % 5 == 0) {
if (debugflag2 && DEBUG2) {
USLOSS_Console("clockHandler2: sending message %s to mbox %d\n", clockResult, clockBox.mboxID);
}
int sendResult = MboxCondSend(clockBox.mboxID, &clockResult, sizeof(clockResult));
if (debugflag2 && DEBUG2) {
USLOSS_Console("clockHandler2: send returned %d\n", sendResult);
USLOSS_Halt(1);
}
}
}
void termHandler(int dev, void* unit)
{
if (DEBUG2 && debugflag2)
USLOSS_Console("termHandler(): called\n");
int status =0;
USLOSS_DeviceInput(dev, (int) unit, &status);
MboxCondSend(1 + (int) unit, &status, 0);
} /* termHandler */
static void diskHandler(int dev, void *arg) {
long unit = (long) arg;
int diskResult;
// check for valid values
if (dev != USLOSS_DISK_DEV || unit < 0 || unit > USLOSS_DISK_UNITS) {
USLOSS_Console("diskHandler(): Bad values\n");
USLOSS_Halt(1);
}
// make sure our box still exists
if (diskBoxes[unit].mboxID == -1) {
USLOSS_Console("Disk mailbox does not exist, unit = %d\n", unit);
USLOSS_Halt(1); // might need to reutn instead
}
USLOSS_DeviceInput(USLOSS_DISK_DEV, unit, &diskResult);
MboxCondSend(diskBoxes[unit].mboxID, &diskResult, sizeof(diskResult));
}
//
// Read characters from terminal 0 and writes them to the USLOSS_Console.
//
void
term_handler(int type, void *arg) {
int result;
int status;
char ch;
int unit = (int) arg;
if (unit != 0) {
return;
}
// Get the device status for terminal 0.
result = USLOSS_DeviceInput(USLOSS_TERM_DEV, 0, &status);
if (result != USLOSS_DEV_OK) {
USLOSS_Console("Something is wrong with terminal 0!!");
USLOSS_Halt(1);
}
// If the status is "USLOSS_DEV_BUSY" then a character has been received.
if (USLOSS_TERM_STAT_RECV(status) == USLOSS_DEV_BUSY) {
ch = USLOSS_TERM_STAT_CHAR(status); // Get the character
USLOSS_Console("%c", ch);
}
}
