void DriverSource::checkVersion() {
int driverVersion = 0;
if (readIntDriver("/dev/gator/version", &driverVersion) == -1) {
logg->logError("Error reading gator driver version");
handleException();
}
// Verify the driver version matches the daemon version
if (driverVersion != PROTOCOL_VERSION) {
if ((driverVersion > PROTOCOL_DEV) || (PROTOCOL_VERSION > PROTOCOL_DEV)) {
// One of the mismatched versions is development version
logg->logError(
"DEVELOPMENT BUILD MISMATCH: gator driver version \"%d\" is not in sync with gator daemon version \"%d\".\n"
">> The following must be synchronized from engineering repository:\n"
">> * gator driver\n"
">> * gator daemon\n"
">> * Streamline", driverVersion, PROTOCOL_VERSION);
handleException();
} else {
// Release version mismatch
logg->logError(
"gator driver version \"%d\" is different than gator daemon version \"%d\".\n"
">> Please upgrade the driver and daemon to the latest versions.", driverVersion, PROTOCOL_VERSION);
handleException();
}
}
}
DriverSource::DriverSource(sem_t *senderSem, sem_t *startProfile) : mBuffer(NULL), mFifo(NULL), mSenderSem(senderSem), mStartProfile(startProfile), mBufferSize(0), mBufferFD(0), mLength(1) {
int driver_version = 0;
mBuffer = new Buffer(0, FRAME_PERF_ATTRS, 4*1024*1024, senderSem);
if (readIntDriver("/dev/gator/version", &driver_version) == -1) {
logg->logError("Error reading gator driver version");
handleException();
}
// Verify the driver version matches the daemon version
if (driver_version != PROTOCOL_VERSION) {
if ((driver_version > PROTOCOL_DEV) || (PROTOCOL_VERSION > PROTOCOL_DEV)) {
// One of the mismatched versions is development version
logg->logError(
"DEVELOPMENT BUILD MISMATCH: gator driver version \"%d\" is not in sync with gator daemon version \"%d\".\n"
">> The following must be synchronized from engineering repository:\n"
">> * gator driver\n"
">> * gator daemon\n"
">> * Streamline", driver_version, PROTOCOL_VERSION);
handleException();
} else {
// Release version mismatch
logg->logError(
"gator driver version \"%d\" is different than gator daemon version \"%d\".\n"
">> Please upgrade the driver and daemon to the latest versions.", driver_version, PROTOCOL_VERSION);
handleException();
}
}
int enable = -1;
if (readIntDriver("/dev/gator/enable", &enable) != 0 || enable != 0) {
logg->logError("Driver already enabled, possibly a session is already in progress.");
handleException();
}
readIntDriver("/dev/gator/cpu_cores", &gSessionData->mCores);
if (gSessionData->mCores == 0) {
gSessionData->mCores = 1;
}
if (readIntDriver("/dev/gator/buffer_size", &mBufferSize) || mBufferSize <= 0) {
logg->logError("Unable to read the driver buffer size");
handleException();
}
}
DriverSource::DriverSource(sem_t *senderSem, sem_t *startProfile) : mBuffer(NULL), mFifo(NULL), mSenderSem(senderSem), mStartProfile(startProfile), mBufferSize(0), mBufferFD(0), mLength(1) {
mBuffer = new Buffer(0, FRAME_PERF_ATTRS, 4*1024*1024, senderSem);
checkVersion();
int enable = -1;
if (readIntDriver("/dev/gator/enable", &enable) != 0 || enable != 0) {
logg->logError("Driver already enabled, possibly a session is already in progress.");
handleException();
}
readIntDriver("/dev/gator/cpu_cores", &gSessionData->mCores);
if (gSessionData->mCores == 0) {
gSessionData->mCores = 1;
}
if (readIntDriver("/dev/gator/buffer_size", &mBufferSize) || mBufferSize <= 0) {
logg->logError("Unable to read the driver buffer size");
handleException();
}
}
int DriverSource::writeReadDriver(const char *path, int *value) {
if (writeDriver(path, *value) || readIntDriver(path, value)) {
return -1;
}
return 0;
}
