TpSensorDriver::TpSensorDriver(std::string path)
: SensorDriver(path)
{
std::ifstream f(path_);
try {
f.exceptions(f.failbit | f.badbit);
int tmp;
unsigned int count = 0;
string skip;
skip.resize(skip_prefix_.size());
f.exceptions(f.badbit);
f.getline(&*skip.begin(), skip_prefix_.size()+1);
f.clear(f.rdstate() & ~f.failbit);
if (skip == skip_prefix_)
skip_bytes_ = f.tellg();
else
throw SystemError(path_ + ": Unknown file format.");
while (!(f.eof() || f.fail())) {
f >> tmp;
if (!f.fail())
++count;
}
set_num_temps(count);
} catch (std::ios_base::failure &e) {
string msg = std::strerror(errno);
throw SystemError(MSG_SENSOR_INIT(path_) + msg);
}
}
AtasmartSensorDriver::AtasmartSensorDriver(string device_path)
: SensorDriver(device_path)
{
if (sk_disk_open(device_path.c_str(), &disk_) < 0) {
string msg = std::strerror(errno);
throw SystemError("sk_disk_open(" + device_path + "): " + msg);
}
set_num_temps(1);
}
NvmlSensorDriver::NvmlSensorDriver(string bus_id)
: dl_nvmlInit_v2(nullptr),
dl_nvmlDeviceGetHandleByPciBusId_v2(nullptr),
dl_nvmlDeviceGetName(nullptr),
dl_nvmlDeviceGetTemperature(nullptr),
dl_nvmlShutdown(nullptr)
{
if (!(nvml_so_handle_ = dlopen("libnvidia-ml.so", RTLD_LAZY))) {
string msg = strerror(errno);
fail(TF_ERR) << SystemError("Failed to load NVML driver: " + msg) << flush;
}
/* Apparently GCC doesn't want to cast to function pointers, so we have to do
* this kind of weird stuff.
* See http://stackoverflow.com/questions/1096341/function-pointers-casting-in-c
*/
*reinterpret_cast<void **>(&dl_nvmlInit_v2) = dlsym(nvml_so_handle_, "nvmlInit_v2");
*reinterpret_cast<void **>(&dl_nvmlDeviceGetHandleByPciBusId_v2) = dlsym(
nvml_so_handle_, "nvmlDeviceGetHandleByPciBusId_v2");
*reinterpret_cast<void **>(&dl_nvmlDeviceGetName) = dlsym(nvml_so_handle_, "nvmlDeviceGetName");
*reinterpret_cast<void **>(&dl_nvmlDeviceGetTemperature) = dlsym(nvml_so_handle_, "nvmlDeviceGetTemperature");
*reinterpret_cast<void **>(&dl_nvmlShutdown) = dlsym(nvml_so_handle_, "nvmlShutdown");
if (!(dl_nvmlDeviceGetHandleByPciBusId_v2 && dl_nvmlDeviceGetName &&
dl_nvmlDeviceGetTemperature && dl_nvmlInit_v2 && dl_nvmlShutdown))
fail(TF_ERR) << SystemError("Incompatible NVML driver.") << flush;
nvmlReturn_t ret;
string name, brand;
name.resize(256);
brand.resize(256);
if ((ret = dl_nvmlInit_v2()))
fail(TF_ERR)
<< SystemError("Failed to initialize NVML driver. Error code (cf. nvml.h): " + std::to_string(ret))
<< flush;
if ((ret = dl_nvmlDeviceGetHandleByPciBusId_v2(bus_id.c_str(), &device_)))
fail(TF_ERR)
<< SystemError("Failed to open PCI device " + bus_id + ". Error code (cf. nvml.h): " + std::to_string(ret))
<< flush;
dl_nvmlDeviceGetName(device_, &*name.begin(), 255);
log(TF_DBG, TF_DBG) << "Initialized NVML sensor on " << name << " at PCI " << bus_id << "." << flush;
set_num_temps(1);
}
TpSensorDriver::TpSensorDriver(std::string path)
: SensorDriver(path)
{
try {
std::ifstream f(path_);
f.exceptions(f.failbit | f.badbit);
int tmp;
unsigned int count = 0;
while (!f.eof()) {
f >> tmp;
++count;
}
set_num_temps(count);
} catch (std::exception &e) {
string msg = std::strerror(errno);
fail(TF_ERR) << path_ + ": " << SystemError(string(e.what()) + ": " + msg) << flush;
}
}
HwmonSensorDriver::HwmonSensorDriver(std::string path)
: SensorDriver(path)
{ set_num_temps(1); }