X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/7246dc4381c6c95454672a5c1aff65a02d6d3747..2b0f50d1aaf22e79272df8b3b0fe37f338ea1dae:/components/ram.c

diff --git a/components/ram.c b/components/ram.c
index f696039..47e6fda 100644
--- a/components/ram.c
+++ b/components/ram.c
@@ -3,50 +3,220 @@
 
 #include "../util.h"
 
-const char *
-ram_free(void)
-{
-	long free;
-
-	return (pscanf("/proc/meminfo", "MemFree: %ld kB\n", &free) == 1) ?
-	       bprintf("%f", (float)free / 1024 / 1024) : NULL;
-}
-
-const char *
-ram_perc(void)
-{
-	long total, free, buffers, cached;
-
-	return (pscanf("/proc/meminfo",
-	               "MemTotal: %ld kB\n"
-	               "MemFree: %ld kB\n"
-	               "MemAvailable: %ld kB\nBuffers: %ld kB\n"
-	               "Cached: %ld kB\n",
-	               &total, &free, &buffers, &buffers, &cached) == 5) ?
-	       bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total) :
-	       NULL;
-}
-
-const char *
-ram_total(void)
-{
-	long total;
-
-	return (pscanf("/proc/meminfo", "MemTotal: %ld kB\n", &total) == 1) ?
-	       bprintf("%f", (float)total / 1024 / 1024) : NULL;
-}
-
-const char *
-ram_used(void)
-{
-	long total, free, buffers, cached;
-
-	return (pscanf("/proc/meminfo",
-	               "MemTotal: %ld kB\n"
-	               "MemFree: %ld kB\n"
-	               "MemAvailable: %ld kB\nBuffers: %ld kB\n"
-	               "Cached: %ld kB\n",
-	               &total, &free, &buffers, &buffers, &cached) == 5) ?
-	       bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024) :
-	       NULL;
-}
+#if defined(__linux__)
+	#include <stdint.h>
+
+	const char *
+	ram_free(void)
+	{
+		uintmax_t free;
+
+		if (pscanf("/proc/meminfo",
+		           "MemTotal: %ju kB\n"
+		           "MemFree: %ju kB\n"
+		           "MemAvailable: %ju kB\n",
+		           &free, &free, &free) != 3) {
+			return NULL;
+		}
+
+		return fmt_human(free * 1024, 1024);
+	}
+
+	const char *
+	ram_perc(void)
+	{
+		uintmax_t total, free, buffers, cached;
+
+		if (pscanf("/proc/meminfo",
+		           "MemTotal: %ju kB\n"
+		           "MemFree: %ju kB\n"
+		           "MemAvailable: %ju kB\n"
+		           "Buffers: %ju kB\n"
+		           "Cached: %ju kB\n",
+		           &total, &free, &buffers, &buffers, &cached) != 5) {
+			return NULL;
+		}
+
+		if (total == 0) {
+			return NULL;
+		}
+
+		return bprintf("%d", 100 * ((total - free) - (buffers + cached))
+                               / total);
+	}
+
+	const char *
+	ram_total(void)
+	{
+		uintmax_t total;
+
+		if (pscanf("/proc/meminfo", "MemTotal: %ju kB\n", &total)
+		    != 1) {
+			return NULL;
+		}
+
+		return fmt_human(total * 1024, 1024);
+	}
+
+	const char *
+	ram_used(void)
+	{
+		uintmax_t total, free, buffers, cached;
+
+		if (pscanf("/proc/meminfo",
+		           "MemTotal: %ju kB\n"
+		           "MemFree: %ju kB\n"
+		           "MemAvailable: %ju kB\n"
+		           "Buffers: %ju kB\n"
+		           "Cached: %ju kB\n",
+		           &total, &free, &buffers, &buffers, &cached) != 5) {
+			return NULL;
+		}
+
+		return fmt_human((total - free - buffers - cached) * 1024,
+		                 1024);
+	}
+#elif defined(__OpenBSD__)
+	#include <stdlib.h>
+	#include <sys/sysctl.h>
+	#include <sys/types.h>
+	#include <unistd.h>
+
+	#define LOG1024 10
+	#define pagetok(size, pageshift) (size_t)(size << (pageshift - LOG1024))
+
+	inline int
+	load_uvmexp(struct uvmexp *uvmexp)
+	{
+		int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
+		size_t size;
+
+		size = sizeof(*uvmexp);
+
+		if (sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0) {
+			return 1;
+		}
+
+		return 0;
+	}
+
+	const char *
+	ram_free(void)
+	{
+		struct uvmexp uvmexp;
+		int free_pages;
+
+		if (load_uvmexp(&uvmexp)) {
+			free_pages = uvmexp.npages - uvmexp.active;
+			return fmt_human(pagetok(free_pages, uvmexp.pageshift) *
+			                 1024, 1024);
+		}
+
+		return NULL;
+	}
+
+	const char *
+	ram_perc(void)
+	{
+		struct uvmexp uvmexp;
+		int percent;
+
+		if (load_uvmexp(&uvmexp)) {
+			percent = uvmexp.active * 100 / uvmexp.npages;
+			return bprintf("%d", percent);
+		}
+
+		return NULL;
+	}
+
+	const char *
+	ram_total(void)
+	{
+		struct uvmexp uvmexp;
+
+		if (load_uvmexp(&uvmexp)) {
+			return fmt_human(pagetok(uvmexp.npages,
+			                         uvmexp.pageshift) * 1024,
+			                 1024);
+		}
+
+		return NULL;
+	}
+
+	const char *
+	ram_used(void)
+	{
+		struct uvmexp uvmexp;
+
+		if (load_uvmexp(&uvmexp)) {
+			return fmt_human(pagetok(uvmexp.active,
+			                         uvmexp.pageshift) * 1024,
+			                 1024);
+		}
+
+		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