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libs/core: make memory tracer work with c and r events, avoid string allocations for debug output

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Jo-Philipp Wich 2009-07-10 13:15:43 +00:00
parent 7372c00dda
commit 6ea0b5eb45
1 changed files with 11 additions and 4 deletions
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15
libs/core/luasrc/debug.lua
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@ -6,13 +6,20 @@ module "luci.debug"
__file__ = debug.getinfo(1, 'S').source:sub(2) __file__ = debug.getinfo(1, 'S').source:sub(2)
-- Enables the memory tracer with given flags and returns a function to disable the tracer again -- Enables the memory tracer with given flags and returns a function to disable the tracer again
function trap_memtrace(flags) function trap_memtrace(flags, dest)
flags = flags or "l" flags = flags or "clr"
local tracefile = io.open("/tmp/memtrace", "w") local tracefile = io.open(dest or "/tmp/memtrace", "w")
local function trap(what, line) local function trap(what, line)
local info = debug.getinfo(2, "Sn") local info = debug.getinfo(2, "Sn")
tracefile:write(info.source..":"..line.."\t"..(info.namewhat or "").."\t"..(info.name or "").."\t"..collectgarbage("count").."\n") if tracefile then
tracefile:write(
"[", what, "] ", info.source, ":", (line or "?"), "\t",
(info.namewhat or ""), "\t",
(info.name or ""), "\t",
collectgarbage("count"), "\n"
)
end
end end
debug.sethook(trap, flags) debug.sethook(trap, flags)