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Simplify LuaJIT memory grow

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Rerumu 2021-12-01 05:37:20 -05:00
parent 65374481ff
commit 7146d83cd4
1 changed files with 5 additions and 8 deletions
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13
wasm/runtime/luajit.lua
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@ -364,18 +364,14 @@ do
local mem_t = ffi.typeof('struct Memory')
local function finalizer(mem) ffi.C.free(mem.data) end
local function finalizer(memory) ffi.C.free(memory.data) end
local function grow_unchecked(memory, old, new)
memory.data = ffi.C.realloc(memory.data, new * WASM_PAGE_SIZE)
memory.min = new
memory.data = ffi.C.realloc(memory.data, new)
assert(memory.data ~= nil, 'failed to reallocate')
local start = memory.data + old * WASM_PAGE_SIZE
local len = (new - old) * WASM_PAGE_SIZE
ffi.fill(start, len, 0)
ffi.fill(memory.data + old, new - old, 0)
end
function memory.new(min, max)
@ -395,7 +391,8 @@ do
if new > memory.max then
return -1
else
grow_unchecked(memory, old, new)
grow_unchecked(memory, old * WASM_PAGE_SIZE, new * WASM_PAGE_SIZE)
memory.min = new
return old
end