view mod_measure_malloc/mod_measure_malloc.lua @ 5247:dc27b997e969

mod_http_oauth2: Invoke mod_http_errors to render error on invalid redirect Turns out returning a table like that produces a blank page. Kinda boring and not very helpful.
author Kim Alvefur <zash@zash.se>
date Sun, 12 Mar 2023 17:56:23 +0100
parents b9af1ccac98b
children
line wrap: on
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);