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	Add ram and swap components on FreeBSD - slstatus - status monitor
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	---
	commit a1ac203d16c379d7fc05765545af2977a7a3584d
	parent 10bdf01b715dcc994f3fe32a6881d5e0b2613a6c
	Author: Michael Buch <[email protected]>
	Date: Sat, 16 Feb 2019 01:26:44 +0000

	Add ram and swap components on FreeBSD

	Diffstat:
	M components/ram.c \| 63 +++++++++++++++++++++++++++++…
	M components/swap.c \| 84 +++++++++++++++++++++++++++++…

	2 files changed, 147 insertions(+), 0 deletions(-)
	---
	diff --git a/components/ram.c b/components/ram.c
	@@ -156,4 +156,67 @@

	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, NU…
	+ \|\| !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, NU…
	+ \|\| !len)
	+ return NULL;
	+
	+ if (sysctlbyname("vm.stats.vm.v_active_count", &active, &len, …
	+ \|\| !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, …
	+ \|\| !len)
	+ return NULL;
	+
	+ return fmt_human(active * getpagesize(), 1024);
	+ }
	#endif
	diff --git a/components/swap.c b/components/swap.c
	@@ -197,4 +197,88 @@

	return fmt_human(used * 1024, 1024);
	}
	+#elif defined(__FreeBSD__)
	+ #include <stdlib.h>
	+ #include <sys/types.h>
	+ #include <fcntl.h>
	+ #include <unistd.h>
	+ #include <kvm.h>
	+
	+ static int getswapinfo(struct kvm_swap *swap_info, size_t size)
	+ {
	+ kvm_t *kd;
	+
	+ kd = kvm_openfiles(NULL, "/dev/null", NULL, 0, NULL);
	+ if(kd == NULL) {
	+ warn("kvm_openfiles '/dev/null':");
	+ return 0;
	+ }
	+
	+ if(kvm_getswapinfo(kd, swap_info, size, 0 /* Unused flags */) …
	+ warn("kvm_getswapinfo:");
	+ kvm_close(kd);
	+ return 0;
	+ }
	+
	+ kvm_close(kd);
	+ return 1;
	+ }
	+
	+ const char *
	+ swap_free(void)
	+ {
	+ struct kvm_swap swap_info[1];
	+ long used, total;
	+
	+ if(!getswapinfo(swap_info, 1))
	+ return NULL;
	+
	+ total = swap_info[0].ksw_total;
	+ used = swap_info[0].ksw_used;
	+
	+ return fmt_human((total - used) * getpagesize(), 1024);
	+ }
	+
	+ const char *
	+ swap_perc(void)
	+ {
	+ struct kvm_swap swap_info[1];
	+ long used, total;
	+
	+ if(!getswapinfo(swap_info, 1))
	+ return NULL;
	+
	+ total = swap_info[0].ksw_total;
	+ used = swap_info[0].ksw_used;
	+
	+ return bprintf("%d", used * 100 / total);
	+ }
	+
	+ const char *
	+ swap_total(void)
	+ {
	+ struct kvm_swap swap_info[1];
	+ long total;
	+
	+ if(!getswapinfo(swap_info, 1))
	+ return NULL;
	+
	+ total = swap_info[0].ksw_total;
	+
	+ return fmt_human(total * getpagesize(), 1024);
	+ }
	+
	+ const char *
	+ swap_used(void)
	+ {
	+ struct kvm_swap swap_info[1];
	+ long used;
	+
	+ if(!getswapinfo(swap_info, 1))
	+ return NULL;
	+
	+ used = swap_info[0].ksw_used;
	+
	+ return fmt_human(used * getpagesize(), 1024);
	+ }
	#endif