From ef34126913978c7cd6e5b0831f78ac8355f053f0 Mon Sep 17 00:00:00 2001 From: William Wilgus Date: Mon, 5 Oct 2020 03:28:02 -0400 Subject: lua add better memory stats lua gives you a memory used number that only reflects the current allocations if fact it doesn't even give you a way to get the amount of ram free rb.mem_stats() seeks to fill this gap by marking the memory allocated for lua with a sentinel value which can later be checked to get a high water mark of the ram used by lua and a pretty good idea of how much ram is available Also includes an example script usage: used, allocd, free = rb.mem_stats() Change-Id: Ia282869f989848324d7d88c7df4827fdbce4fb4e --- apps/plugins/lua_scripts/memchk.lua | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 apps/plugins/lua_scripts/memchk.lua (limited to 'apps/plugins/lua_scripts/memchk.lua') diff --git a/apps/plugins/lua_scripts/memchk.lua b/apps/plugins/lua_scripts/memchk.lua new file mode 100644 index 0000000000..f7619fe3dd --- /dev/null +++ b/apps/plugins/lua_scripts/memchk.lua @@ -0,0 +1,32 @@ +--[[ + __________ __ ___. + Open \______ \ ____ ____ | | _\_ |__ _______ ___ + Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + \/ \/ \/ \/ \/ + $Id$ + Example Lua Memory Use + Copyright (C) 2020 William Wilgus + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + KIND, either express or implied. +]]-- + +local used, allocd, free = rb.mem_stats() +local lu = collectgarbage("count") +local fmt = function(t, v) return string.format("%s: %d Kb\n", t, v /1024) end + +-- this is how lua recommends to concat strings rather than .. +local s_t = {} +s_t[1] = "rockbox:\n" +s_t[2] = fmt("Used ", used) +s_t[3] = fmt("Allocd ", allocd) +s_t[4] = fmt("Free ", free) +s_t[5] = "\nlua:\n" +s_t[6] = fmt("Used", lu * 1024) +s_t[7] = "\n\nNote that the rockbox used count is a high watermark" +rb.splash_scroller(10 * rb.HZ, table.concat(s_t)) -- cgit v1.2.3