From 70f42e5d5418df6e87606f172f5b501aeebdccb8 Mon Sep 17 00:00:00 2001
From: mutlusun <mutlusun@github.com>
Date: Wed, 25 Jan 2017 17:53:29 +0100
Subject: [PATCH] port mem widget to freebsd

---
 widgets/mem_freebsd.lua            | 70 ++++++++++++++++++++++++++++++
 widgets/{mem.lua => mem_linux.lua} |  4 +-
 2 files changed, 72 insertions(+), 2 deletions(-)
 create mode 100644 widgets/mem_freebsd.lua
 rename widgets/{mem.lua => mem_linux.lua} (94%)

diff --git a/widgets/mem_freebsd.lua b/widgets/mem_freebsd.lua
new file mode 100644
index 0000000..618c418
--- /dev/null
+++ b/widgets/mem_freebsd.lua
@@ -0,0 +1,70 @@
+-- {{{ Grab environment
+local tonumber = tonumber
+local setmetatable = setmetatable
+local math = { floor = math.floor }
+local helpers = require("vicious.helpers")
+-- }}}
+
+-- Mem: provides RAM and Swap usage statistics
+-- vicious.widgets.mem_freebsd
+local mem_freebsd = {}
+
+
+-- {{{ Memory widget type
+local function worker(format)
+    local pagesize = tonumber(helpers.sysctl("hw.pagesize"))
+    local vm_stats = helpers.sysctl_table("vm.stats.vm")
+    local _mem = { buf = {}, total = nil }
+
+    _mem.total = tonumber(vm_stats.v_page_count) * pagesize
+    _mem.buf.f = tonumber(vm_stats.v_free_count) * pagesize
+    _mem.buf.a = tonumber(vm_stats.v_active_count) * pagesize
+    _mem.buf.i = tonumber(vm_stats.v_inactive_count) * pagesize
+    _mem.buf.c = tonumber(vm_stats.v_cache_count) * pagesize
+    _mem.buf.w = tonumber(vm_stats.v_wire_count) * pagesize
+
+    -- rework into Megabytes
+    _mem.total = math.floor(_mem.total/(1024*1024))
+    _mem.buf.f = math.floor(_mem.buf.f/(1024*1024))
+    _mem.buf.a = math.floor(_mem.buf.a/(1024*1024))
+    _mem.buf.i = math.floor(_mem.buf.i/(1024*1024))
+    _mem.buf.c = math.floor(_mem.buf.c/(1024*1024))
+    _mem.buf.w = math.floor(_mem.buf.w/(1024*1024))
+
+    -- Calculate memory percentage
+    _mem.free  = _mem.buf.f + _mem.buf.c
+    _mem.inuse = _mem.buf.a + _mem.buf.i
+    _mem.wire  = _mem.buf.w
+    _mem.bcuse = _mem.total - _mem.buf.f
+    _mem.usep  = math.floor(_mem.inuse / _mem.total * 100)
+    _mem.inusep= math.floor(_mem.inuse / _mem.total * 100)
+    _mem.buffp = math.floor(_mem.bcuse / _mem.total * 100)
+    _mem.wirep = math.floor(_mem.wire /  _mem.total * 100)
+
+    -- Get swap states
+    local vm = helpers.sysctl_table("vm")
+    local _swp = { buf = {}, total = nil }
+    
+    if tonumber(vm.swap_enabled) == 1 and tonumber(vm.swap_total) > 0 then
+        -- Get swap space
+        _swp.total = tonumber(vm.swap_total)
+        _swp.buf.f = _swp.total - tonumber(vm_stats.v_swapin)
+        -- Rework into megabytes
+        _swp.total = math.floor(_swp.total/(1024*1024))
+        _swp.buf.f = math.floor(_swp.buf.f/(1024*1024))
+        -- Calculate percentage
+        _swp.inuse = _swp.total - _swp.buf.f
+        _swp.usep  = math.floor(_swp.inuse / _swp.total * 100)
+    else
+         _swp.usep = -1
+         _swp.inuse = -1
+         _swp.total = -1
+         _swp.buf.f = -1
+    end
+
+    return { _mem.usep,  _mem.inuse, _mem.total, _mem.free,
+             _swp.usep,  _swp.inuse, _swp.total, _swp.buf.f,
+             _mem.bcuse, _mem.buffp, _mem.wirep }
+end
+
+return setmetatable(mem_freebsd, { __call = function(_, ...) return worker(...) end })
diff --git a/widgets/mem.lua b/widgets/mem_linux.lua
similarity index 94%
rename from widgets/mem.lua
rename to widgets/mem_linux.lua
index 67ef42a..4ff35d8 100644
--- a/widgets/mem.lua
+++ b/widgets/mem_linux.lua
@@ -14,7 +14,7 @@ local string = { gmatch = string.gmatch }
 
 -- Mem: provides RAM and Swap usage statistics
 -- vicious.widgets.mem
-local mem = {}
+local mem_linux = {}
 
 
 -- {{{ Memory widget type
@@ -49,4 +49,4 @@ local function worker(format)
 end
 -- }}}
 
-return setmetatable(mem, { __call = function(_, ...) return worker(...) end })
+return setmetatable(mem_linux, { __call = function(_, ...) return worker(...) end })