| ---------------------------------------------------------------------------- | |
| -- LuaJIT profiler zones. | |
| -- | |
| -- Copyright (C) 2005-2025 Mike Pall. All rights reserved. | |
| -- Released under the MIT license. See Copyright Notice in luajit.h | |
| ---------------------------------------------------------------------------- | |
| -- | |
| -- This module implements a simple hierarchical zone model. | |
| -- | |
| -- Example usage: | |
| -- | |
| -- local zone = require("jit.zone") | |
| -- zone("AI") | |
| -- ... | |
| -- zone("A*") | |
| -- ... | |
| -- print(zone:get()) --> "A*" | |
| -- ... | |
| -- zone() | |
| -- ... | |
| -- print(zone:get()) --> "AI" | |
| -- ... | |
| -- zone() | |
| -- | |
| ---------------------------------------------------------------------------- | |
| local remove = table.remove | |
| return setmetatable({ | |
| flush = function(t) | |
| for i=#t,1,-1 do t[i] = nil end | |
| end, | |
| get = function(t) | |
| return t[#t] | |
| end | |
| }, { | |
| __call = function(t, zone) | |
| if zone then | |
| t[#t+1] = zone | |
| else | |
| return (assert(remove(t), "empty zone stack")) | |
| end | |
| end | |
| }) | |