spoon

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cpu.c (649B)


      1 #include <err.h>
      2 #include <stdio.h>
      3 
      4 #ifdef __OpenBSD__
      5 #include <sys/sysctl.h>
      6 
      7 int
      8 cpuread(void *arg, char *buf, size_t len)
      9 {
     10 	int mib[2], cpuspeed;
     11 	size_t sz;
     12 
     13 	mib[0] = CTL_HW;
     14 	mib[1] = HW_CPUSPEED;
     15 	sz = sizeof(cpuspeed);
     16 	if (sysctl(mib, 2, &cpuspeed, &sz, NULL, 0) < 0)
     17 		return -1;
     18 	snprintf(buf, len, "%4dMHz", cpuspeed);
     19 	return 0;
     20 }
     21 #elif __linux__
     22 int
     23 cpuread(void *arg, char *buf, size_t len)
     24 {
     25 	char *path = arg;
     26 	FILE *fp;
     27 	int freq;
     28 
     29 	fp = fopen(path, "r");
     30 	if (fp == NULL) {
     31 		warn("fopen %s", path);
     32 		return -1;
     33 	}
     34 	fscanf(fp, "%d", &freq);
     35 	fclose(fp);
     36 	freq /= 1000;
     37 	snprintf(buf, len, "%4dMHz", freq);
     38 	return 0;
     39 }
     40 #endif