conky-config/drawing/Memory.lua

204 lines
5.4 KiB
Lua

local M = {}
local Arc = require 'Arc'
local Dial = require 'Dial'
local LabelPlot = require 'LabelPlot'
local Table = require 'Table'
local Util = require 'Util'
local Common = require 'Common'
local Theme = require 'Patterns'
local Geometry = require 'Geometry'
local __string_match = string.match
local __cairo_path_destroy = cairo_path_destroy
local _MODULE_Y_ = 712
local _DIAL_THICKNESS_ = 8
local _TEXT_Y_OFFSET_ = 7
local _TEXT_LEFT_X_OFFSET_ = 30
local _TEXT_SPACING_ = 20
local _PLOT_SECTION_BREAK_ = 30
local _PLOT_HEIGHT_ = 56
local _TABLE_SECTION_BREAK_ = 20
local _TABLE_HEIGHT_ = 114
local MEM_TOTAL_KB = tonumber(Util.read_file('/proc/meminfo', '^MemTotal:%s+(%d+)'))
local MEMINFO_REGEX = '\nMemFree:%s+(%d+).+'..
'\nBuffers:%s+(%d+).+'..
'\nCached:%s+(%d+).+'..
'\nSwapTotal:%s+(%d+).+'..
'\nSwapFree:%s+(%d+).+'..
'\nSReclaimable:%s+(%d+)'
local NUM_ROWS = 5
local TABLE_CONKY = {}
for r = 1, NUM_ROWS do
TABLE_CONKY[r] = {}
TABLE_CONKY[r].comm = '${top_mem name '..r..'}'
TABLE_CONKY[r].pid = '${top_mem pid '..r..'}'
TABLE_CONKY[r].mem = '${top_mem mem '..r..'}'
end
local header = Common.Header(
Geometry.RIGHT_X,
_MODULE_Y_,
Geometry.SECTION_WIDTH,
'MEMORY'
)
local DIAL_RADIUS = 32
local DIAL_THETA_0 = math.rad(90)
local DIAL_THETA_1 = math.rad(360)
local DIAL_X = Geometry.RIGHT_X + DIAL_RADIUS + _DIAL_THICKNESS_ / 2
local DIAL_Y = header.bottom_y + DIAL_RADIUS + _DIAL_THICKNESS_ / 2
local dial = Common.dial(DIAL_X, DIAL_Y, DIAL_RADIUS, _DIAL_THICKNESS_, 0.8)
local cache_arc = Common.arc(
DIAL_X,
DIAL_Y,
DIAL_RADIUS,
_DIAL_THICKNESS_,
Theme.INDICATOR_FG_SECONDARY
)
local text_ring = Common.initTextRing(
DIAL_X,
DIAL_Y,
DIAL_RADIUS - _DIAL_THICKNESS_ / 2 - 2,
'%s%%',
80
)
local _LINE_1_Y_ = header.bottom_y + _TEXT_Y_OFFSET_
local _TEXT_LEFT_X_ = Geometry.RIGHT_X + DIAL_RADIUS * 2 + _TEXT_LEFT_X_OFFSET_
local _RIGHT_X_ = Geometry.RIGHT_X + Geometry.SECTION_WIDTH
local swap = Common.initTextRowCrit(
_TEXT_LEFT_X_,
_LINE_1_Y_,
-- TODO this is silly
_RIGHT_X_ - _TEXT_LEFT_X_,
'Swap Usage',
'%s%%',
80
)
local cache = Common.initTextRows_color(
_TEXT_LEFT_X_,
_LINE_1_Y_ + _TEXT_SPACING_,
Geometry.SECTION_WIDTH - _TEXT_LEFT_X_OFFSET_ - DIAL_RADIUS * 2,
_TEXT_SPACING_,
{'Page Cache', 'Buffers', 'Kernel Slab'},
Theme.SECONDARY_FG,
'%s%%'
)
local _PLOT_Y_ = _PLOT_SECTION_BREAK_ + header.bottom_y + DIAL_RADIUS * 2
local plot = Common.initThemedLabelPlot(
Geometry.RIGHT_X,
_PLOT_Y_,
Geometry.SECTION_WIDTH,
_PLOT_HEIGHT_,
Common.percent_label_style
)
local tbl = Common.initTable(
Geometry.RIGHT_X,
_PLOT_Y_ + _PLOT_HEIGHT_ + _TABLE_SECTION_BREAK_,
Geometry.SECTION_WIDTH,
_TABLE_HEIGHT_,
NUM_ROWS,
{'Name', 'PID', 'Mem (%)'}
)
local update = function(cr)
local conky = Util.conky
-- see source for the 'free' command (sysinfo.c) for formulas
local memfree_kb, buffers_kb, cached_kb, swap_total_kb, swap_free_kb,
slab_reclaimable_kb = __string_match(Util.read_file('/proc/meminfo'), MEMINFO_REGEX)
local used_percent = (MEM_TOTAL_KB - memfree_kb - cached_kb - buffers_kb - slab_reclaimable_kb) / MEM_TOTAL_KB
Dial.set(dial, used_percent)
Common.text_ring_set(text_ring, cr, Util.round_to_string(used_percent * 100))
local cache_theta = (DIAL_THETA_0 - DIAL_THETA_1) / MEM_TOTAL_KB * memfree_kb + DIAL_THETA_1
__cairo_path_destroy(cache_arc.path)
cache_arc.path = Arc.create_path(cr, DIAL_X, DIAL_Y, DIAL_RADIUS, dial.dial_angle, cache_theta)
Common.text_row_crit_set(swap, cr,
Util.precision_round_to_string(
(swap_total_kb - swap_free_kb)
/ swap_total_kb * 100))
Common.text_rows_set(cache, cr, 1, Util.precision_round_to_string(
cached_kb / MEM_TOTAL_KB * 100))
Common.text_rows_set(cache, cr, 2, Util.precision_round_to_string(
buffers_kb / MEM_TOTAL_KB * 100))
Common.text_rows_set(cache, cr, 3, Util.precision_round_to_string(
slab_reclaimable_kb / MEM_TOTAL_KB * 100))
LabelPlot.update(plot, used_percent)
for r = 1, NUM_ROWS do
local comm = conky(TABLE_CONKY[r].comm, '(%S+)') -- may have trailing space
local pid = conky(TABLE_CONKY[r].pid)
local mem = conky(TABLE_CONKY[r].mem)
Table.set(tbl, cr, 1, r, comm)
Table.set(tbl, cr, 2, r, pid)
Table.set(tbl, cr, 3, r, mem)
end
end
_MODULE_Y_ = nil
_DIAL_THICKNESS_ = nil
_DIAL_SPACING_ = nil
_TEXT_Y_OFFSET_ = nil
_TEXT_LEFT_X_OFFSET_ = nil
_TEXT_SPACING_ = nil
_PLOT_SECTION_BREAK_ = nil
_PLOT_HEIGHT_ = nil
_TABLE_SECTION_BREAK_ = nil
_TABLE_HEIGHT_ = nil
_LINE_1_Y_ = nil
_TEXT_LEFT_X_ = nil
_RIGHT_X_ = nil
_PLOT_Y_ = nil
M.draw_static = function(cr)
Common.drawHeader(cr, header)
Common.text_ring_draw_static(text_ring, cr)
Dial.draw_static(dial, cr)
Common.text_row_crit_draw_static(swap, cr)
Common.text_rows_draw_static(cache, cr)
LabelPlot.draw_static(plot, cr)
Table.draw_static(tbl, cr)
end
M.draw_dynamic = function(cr)
update(cr)
Dial.draw_dynamic(dial, cr)
Arc.draw(cache_arc, cr)
Common.text_ring_draw_dynamic(text_ring, cr)
Common.text_row_crit_draw_dynamic(swap, cr)
Common.text_rows_draw_dynamic(cache, cr)
LabelPlot.draw_dynamic(plot, cr)
Table.draw_dynamic(tbl, cr)
end
return M