doing sth

include/cpu.h

@@ -0,0 +1,27 @@
+#ifndef CPU_H
+#define CPU_H
+
+#include <stdint.h>
+
+enum cpu_module_t : uint8_t {
+	unknown,
+	k10temp,
+	zenpower
+};
+
+struct cpu_sensors_t {
+	enum cpu_module_t module;
+	uint8_t num_cores;
+	int16_t tdie;
+	int16_t tctl;
+	int16_t tccd1;
+	// double pcore;
+	// double psoc;
+	float ptotal;
+	// double vcore;
+	// double vsoc;
+	uint32_t avg_freq;
+	char hwmon[128];
+};
+
+#endif

include/utils.h

@@ -0,0 +1,9 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+#define fastReadNum(path, buf, result_ptr, div)     \
+_Generic((result_ptr),                      \
+uint64_t*: _fRN_u64,                \
+)(path, buf, sizeof(buf), result_ptr, div)
+
+#endif

src/cpu.c

@@ -0,0 +1,8 @@
+#include "cpu.h"
+
+#include <stdio.h>
+
+void cpu_detect(struct cpu_sensors_t* t, const char* pci_dev) {
+	char path[128];
+	snprintf(path, sizeof(path), "/sys/bus/pci/devices/%s/hwmon", pci_dev);
+}

src/utils.c

@@ -0,0 +1,37 @@
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "log.h"
+#include <glob.h>
+
+#include "utils.h"
+
+inline bool file_exists(const char* path) {
+	return access(path, F_OK) == 0;
+}
+
+int get_hwmon_dir(char* path) {
+	glob_t g;
+	if (glob(path, 0, NULL, &g) == 0) {
+
+	}
+}
+
+/* read n bytes from path into buffer */
+inline ssize_t read_file(const char* path, char* buffer, const ssize_t n) {
+	const int fd = open(path, O_RDONLY | O_CLOEXEC);
+	if (fd < 0) {
+		applog(LOG_ERR, "Error reading %s", path);
+		return 0;
+	}
+	const ssize_t len = read(fd, buffer, n);
+	if (len >= 0) buffer[len] = '\0';
+	close(fd);
+	return len;
+}
+
+inline void _fRN_u64(const char* path, char* buf, uint64_t* result, const uint16_t divider) {
+	read_file(path, buf, 24); // wont ever be longer than 24 chars right? potential bug
+	*result = strtoull(buf, NULL, 10) / divider;
+}