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local debug = require "debug"
local io = require "io"
local collectgarbage, floor = collectgarbage, math.floor
module "luci.debug"
__file__ = debug.getinfo(1, 'S').source:sub(2)
-- Enables the memory tracer with given flags and returns a function to disable the tracer again
function trap_memtrace(flags, dest)
flags = flags or "clr"
local tracefile = io.open(dest or "/tmp/memtrace", "w")
local peak = 0
local function trap(what, line)
local info = debug.getinfo(2, "Sn")
local size = floor(collectgarbage("count"))
if size > peak then
peak = size
end
if tracefile then
tracefile:write(
"[", what, "] ", info.source, ":", (line or "?"), "\t",
(info.namewhat or ""), "\t",
(info.name or ""), "\t",
size, " (", peak, ")\n"
)
end
end
debug.sethook(trap, flags)
return function()
debug.sethook()
tracefile:close()
end
end
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