mirror of https://github.com/xzeldon/htop.git
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
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#include "LibSensors.h"
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#ifdef HAVE_SENSORS_SENSORS_H
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#include <dlfcn.h>
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#include <errno.h>
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#include <limits.h>
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#include <sensors/sensors.h>
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#include "XUtils.h"
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static int (*sym_sensors_init)(FILE*);
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static void (*sym_sensors_cleanup)(void);
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static const sensors_chip_name* (*sym_sensors_get_detected_chips)(const sensors_chip_name*, int*);
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static int (*sym_sensors_snprintf_chip_name)(char*, size_t, const sensors_chip_name*);
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static const sensors_feature* (*sym_sensors_get_features)(const sensors_chip_name*, int*);
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static const sensors_subfeature* (*sym_sensors_get_subfeature)(const sensors_chip_name*, const sensors_feature*, sensors_subfeature_type);
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static int (*sym_sensors_get_value)(const sensors_chip_name*, int, double*);
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static void* dlopenHandle = NULL;
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int LibSensors_init(FILE* input) {
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if (!dlopenHandle) {
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dlopenHandle = dlopen("libsensors.so", RTLD_LAZY);
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if (!dlopenHandle)
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goto dlfailure;
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/* Clear any errors */
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dlerror();
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#define resolve(symbolname) do { \
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*(void **)(&sym_##symbolname) = dlsym(dlopenHandle, #symbolname); \
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if (!sym_##symbolname || dlerror() != NULL) \
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goto dlfailure; \
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} while(0)
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resolve(sensors_init);
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resolve(sensors_cleanup);
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resolve(sensors_get_detected_chips);
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resolve(sensors_snprintf_chip_name);
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resolve(sensors_get_features);
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resolve(sensors_get_subfeature);
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resolve(sensors_get_value);
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#undef resolve
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}
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return sym_sensors_init(input);
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dlfailure:
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if (dlopenHandle) {
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dlclose(dlopenHandle);
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dlopenHandle = NULL;
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}
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return -1;
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}
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void LibSensors_cleanup(void) {
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if (dlopenHandle) {
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sym_sensors_cleanup();
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dlclose(dlopenHandle);
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dlopenHandle = NULL;
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}
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}
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int LibSensors_getCPUTemperatures(CPUData* cpus, int cpuCount) {
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if (!dlopenHandle)
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return -ENOTSUP;
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int tempCount = 0;
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int n = 0;
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for (const sensors_chip_name *chip = sym_sensors_get_detected_chips(NULL, &n); chip; chip = sym_sensors_get_detected_chips(NULL, &n)) {
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char buffer[32];
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sym_sensors_snprintf_chip_name(buffer, sizeof(buffer), chip);
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if (!String_startsWith(buffer, "coretemp") && !String_startsWith(buffer, "cpu_thermal"))
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continue;
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int m = 0;
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for (const sensors_feature *feature = sym_sensors_get_features(chip, &m); feature; feature = sym_sensors_get_features(chip, &m)) {
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if (feature->type != SENSORS_FEATURE_TEMP)
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continue;
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if (feature->number > cpuCount)
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continue;
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const sensors_subfeature *sub_feature = sym_sensors_get_subfeature(chip, feature, SENSORS_SUBFEATURE_TEMP_INPUT);
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if (sub_feature) {
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double temp;
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int r = sym_sensors_get_value(chip, sub_feature->number, &temp);
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if (r != 0)
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continue;
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cpus[feature->number].temperature = temp;
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tempCount++;
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}
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}
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}
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return tempCount;
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}
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#endif /* HAVE_SENSORS_SENSORS_H */
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