view mod_measure_malloc/mod_measure_malloc.lua @ 5139:449e4ca4de32

mod_unified_push: Remove dependency on trunk util.jwt (0.12 compat) This should allow the module to work on 0.12, while preserving expiry checking (which was not built in to 0.12's util.jwt).
author Matthew Wild <mwild1@gmail.com>
date Tue, 10 Jan 2023 16:34:21 +0000
parents b9af1ccac98b
children
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line source

module:set_global();

local metric = require"core.statsmanager".metric;
local pposix = require"util.pposix";

local allocated = metric(
	"gauge", "malloc_heap_allocated", "bytes",
	"Allocated bytes by mode of allocation",
	{"mode"}
);

local used = metric(
	"gauge", "malloc_heap_used", "bytes",
	"Used bytes"
):with_labels();

local unused = metric(
	"gauge", "malloc_heap_unused", "bytes",
	"Unused bytes"
):with_labels();

local returnable = metric(
	"gauge", "malloc_heap_returnable", "bytes",
	"Returnable bytes"
):with_labels();

module:hook("stats-update", function ()
	local meminfo = pposix.meminfo();
	if meminfo.allocated then
		allocated:with_labels("sbrk"):set(meminfo.allocated);
	end
	if meminfo.allocated_mmap then
		allocated:with_labels("mmap"):set(meminfo.allocated_mmap);
	end
	if meminfo.used then
		used:set(meminfo.used);
	end
	if meminfo.unused then
		unused:set(meminfo.unused);
	end
	if meminfo.returnable then
		returnable:set(meminfo.returnable);
	end
end);