mirror of
https://github.com/love2d/love.git
synced 2026-08-12 08:30:56 +02:00
Sasha Szpakowski
76 lines
2.9 KiB
Lua
76 lines
2.9 KiB
Lua
R"luastring"--(
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-- DO NOT REMOVE THE ABOVE LINE. It is used to load this file as a C++ string.
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-- There is a matching delimiter at the bottom of the file.
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--[[
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Copyright (c) 2006-2023 LOVE Development Team
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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--]]
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if type(jit) ~= "table" or not jit.status() then
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return
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end
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-- Double the defaults.
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jit.opt.start("maxtrace=2000", "maxrecord=8000")
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-- Somewhat arbitrary value. Needs to be higher than the combined sizes below,
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-- and higher than the default (512) because that's already too low.
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jit.opt.start("maxmcode=16384")
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if jit.arch == "arm64" then
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-- https://github.com/LuaJIT/LuaJIT/issues/285
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-- LuaJIT 2.1 on arm64 currently (as of commit b4b2dce) can only use memory
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-- for JIT compilation within a certain short range. Other libraries such as
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-- SDL can take all the usable space in that range and cause attempts at JIT
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-- compilation to both fail and take a long time.
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-- This is a very hacky attempt at a workaround. LuaJIT allocates executable
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-- code in pools. We'll try "reserving" pools before any external code is
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-- executed, by causing JIT compilation via a small loop. We can't easily
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-- tell if JIT compilation succeeded, so we do several successively smaller
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-- pool allocations in case previous ones fail.
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-- This is a really hacky hack and by no means foolproof - there are a lot of
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-- potential situations (especially when threads are used) where previously
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-- executed external code will still take up space that LuaJIT needed for itself.
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jit.opt.start("sizemcode=2048")
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for i=1, 100 do end
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jit.opt.start("sizemcode=1024")
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for i=1, 100 do end
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jit.opt.start("sizemcode=512")
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for i=1, 100 do end
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jit.opt.start("sizemcode=256")
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for i=1, 100 do end
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jit.opt.start("sizemcode=128")
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for i=1, 100 do end
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-- Actually just turn the whole thing off for arm64. It's very hard to get
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-- reliable performance in non-trivial games even with the above workaround.
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jit.off()
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else
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-- Somewhat arbitrary value (>= the default).
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jit.opt.start("sizemcode=128")
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end
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-- DO NOT REMOVE THE NEXT LINE. It is used to load this file as a C++ string.
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--)luastring"--"
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