conky-config/drawing/Memory.lua

208 lines
6.0 KiB
Lua

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'
return function(update_freq)
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 MEMINFO_REGEX = '\nMemFree:%s+(%d+).+'..
'\nBuffers:%s+(%d+).+'..
'\nCached:%s+(%d+).+'..
'\nSwapTotal:%s+(%d+).+'..
'\nSwapFree:%s+(%d+).+'..
'\nSReclaimable:%s+(%d+)'
local __string_match = string.match
local __cairo_path_destroy = cairo_path_destroy
-----------------------------------------------------------------------------
-- header
local header = Common.Header(
Geometry.RIGHT_X,
MODULE_Y,
Geometry.SECTION_WIDTH,
'MEMORY'
)
-----------------------------------------------------------------------------
-- mem consumption dial
local mem_total_kb = tonumber(Util.read_file('/proc/meminfo', '^MemTotal:%s+(%d+)'))
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
)
-----------------------------------------------------------------------------
-- swap/buffers stats
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 SWAP_BUFFERS_WIDTH = Geometry.SECTION_WIDTH - TEXT_LEFT_X_OFFSET
- DIAL_RADIUS * 2
local swap = Common.initTextRowCrit(
TEXT_LEFT_X,
LINE_1_Y,
SWAP_BUFFERS_WIDTH,
'Swap Usage',
'%s%%',
80
)
local cache = Common.initTextRows_color(
TEXT_LEFT_X,
LINE_1_Y + TEXT_SPACING,
SWAP_BUFFERS_WIDTH,
TEXT_SPACING,
{'Page Cache', 'Buffers', 'Kernel Slab'},
Theme.SECONDARY_FG,
'%s%%'
)
-----------------------------------------------------------------------------
-- memory consumption plot
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,
update_freq
)
-----------------------------------------------------------------------------
-- memory top table
local NUM_ROWS = 5
local TABLE_CONKY = {}
for r = 1, NUM_ROWS do
TABLE_CONKY[r] = {
comm = '${top_mem name '..r..'}',
pid = '${top_mem pid '..r..'}',
mem = '${top_mem mem '..r..'}',
}
end
local tbl = Common.initTable(
Geometry.RIGHT_X,
PLOT_Y + PLOT_HEIGHT + TABLE_SECTION_BREAK,
Geometry.SECTION_WIDTH,
TABLE_HEIGHT,
NUM_ROWS,
{'Name', 'PID', 'Mem (%)'}
)
-----------------------------------------------------------------------------
-- main functions
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
Table.set(tbl, cr, 1, r, conky(TABLE_CONKY[r].comm, '(%S+)'))
Table.set(tbl, cr, 2, r, conky(TABLE_CONKY[r].pid))
Table.set(tbl, cr, 3, r, conky(TABLE_CONKY[r].mem))
end
end
local 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
local 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 {dynamic = draw_dynamic, static = draw_static}
end