return NULL;
}
+#elif defined(__FreeBSD__)
+ #include <sys/sysctl.h>
+ #include <sys/vmmeter.h>
+ #include <unistd.h>
+ #include <vm/vm_param.h>
+
+ const char *
+ ram_free(void) {
+ struct vmtotal vm_stats;
+ int mib[] = {CTL_VM, VM_TOTAL};
+ size_t len;
+
+ len = sizeof(struct vmtotal);
+ if (sysctl(mib, 2, &vm_stats, &len, NULL, 0) == -1
+ || !len)
+ return NULL;
+
+ return fmt_human(vm_stats.t_free * getpagesize(), 1024);
+ }
+
+ const char *
+ ram_total(void) {
+ long npages;
+ size_t len;
+
+ len = sizeof(npages);
+ if (sysctlbyname("vm.stats.vm.v_page_count", &npages, &len, NULL, 0) == -1
+ || !len)
+ return NULL;
+
+ return fmt_human(npages * getpagesize(), 1024);
+ }
+
+ const char *
+ ram_perc(void) {
+ long npages;
+ long active;
+ size_t len;
+
+ len = sizeof(npages);
+ if (sysctlbyname("vm.stats.vm.v_page_count", &npages, &len, NULL, 0) == -1
+ || !len)
+ return NULL;
+
+ if (sysctlbyname("vm.stats.vm.v_active_count", &active, &len, NULL, 0) == -1
+ || !len)
+ return NULL;
+
+ return bprintf("%d", active * 100 / npages);
+ }
+
+ const char *
+ ram_used(void) {
+ long active;
+ size_t len;
+
+ len = sizeof(active);
+ if (sysctlbyname("vm.stats.vm.v_active_count", &active, &len, NULL, 0) == -1
+ || !len)
+ return NULL;
+
+ return fmt_human(active * getpagesize(), 1024);
+ }
#endif