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https://github.com/ninjamuffin99/Funkin.git
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114 lines
3.9 KiB
Haxe
114 lines
3.9 KiB
Haxe
package funkin.util;
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/**
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* Utilities for working with the garbage collector.
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*
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* HXCPP is built on Immix.
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* HTML5 builds use the browser's built-in mark-and-sweep and JS has no APIs to interact with it.
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* @see https://www.cs.cornell.edu/courses/cs6120/2019fa/blog/immix/
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* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Memory_management
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* @see https://betterprogramming.pub/deep-dive-into-garbage-collection-in-javascript-6881610239a
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* @see https://github.com/HaxeFoundation/hxcpp/blob/master/docs/build_xml/Defines.md
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* @see cpp.vm.Gc
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*/
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class MemoryUtil
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{
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public static function buildGCInfo():String
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{
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#if cpp
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var result:String = 'HXCPP-Immix:';
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result += '\n- Memory Used: ${cpp.vm.Gc.memInfo(cpp.vm.Gc.MEM_INFO_USAGE)} bytes';
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result += '\n- Memory Reserved: ${cpp.vm.Gc.memInfo(cpp.vm.Gc.MEM_INFO_RESERVED)} bytes';
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result += '\n- Memory Current Pool: ${cpp.vm.Gc.memInfo(cpp.vm.Gc.MEM_INFO_CURRENT)} bytes';
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result += '\n- Memory Large Pool: ${cpp.vm.Gc.memInfo(cpp.vm.Gc.MEM_INFO_LARGE)} bytes';
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result += '\n- HXCPP Debugger: ${#if HXCPP_DEBUGGER 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Exp Generational Mode: ${#if HXCPP_GC_GENERATIONAL 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Exp Moving GC: ${#if HXCPP_GC_MOVING 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Exp Moving GC: ${#if HXCPP_GC_DYNAMIC_SIZE 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Exp Moving GC: ${#if HXCPP_GC_BIG_BLOCKS 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Debug Link: ${#if HXCPP_DEBUG_LINK 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Stack Trace: ${#if HXCPP_STACK_TRACE 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Stack Trace Line Numbers: ${#if HXCPP_STACK_LINE 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Pointer Validation: ${#if HXCPP_CHECK_POINTER 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Profiler: ${#if HXCPP_PROFILER 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP Local Telemetry: ${#if HXCPP_TELEMETRY 'Enabled' #else 'Disabled' #end}';
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result += '\n- HXCPP C++11: ${#if HXCPP_CPP11 'Enabled' #else 'Disabled' #end}';
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result += '\n- Source Annotation: ${#if annotate_source 'Enabled' #else 'Disabled' #end}';
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#elseif js
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var result:String = 'JS-MNS:';
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result += '\n- Memory Used: ${getMemoryUsed()} bytes';
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#else
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var result:String = 'Unknown GC';
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#end
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return result;
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}
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/**
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* Calculate the total memory usage of the program, in bytes.
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* @return Int
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*/
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public static function getMemoryUsed():Int
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{
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#if cpp
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// There is also Gc.MEM_INFO_RESERVED, MEM_INFO_CURRENT, and MEM_INFO_LARGE.
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return cpp.vm.Gc.memInfo(cpp.vm.Gc.MEM_INFO_USAGE);
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#else
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return openfl.system.System.totalMemory;
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#end
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}
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/**
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* Enable garbage collection if it was previously disabled.
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*/
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public static function enable():Void
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{
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#if cpp
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cpp.vm.Gc.enable(true);
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#else
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throw 'Not implemented!';
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#end
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}
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/**
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* Disable garbage collection entirely.
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*/
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public static function disable():Void
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{
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#if cpp
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cpp.vm.Gc.enable(false);
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#else
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throw 'Not implemented!';
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#end
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}
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/**
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* Manually perform garbage collection once.
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* Should only be called from the main thread.
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* @param major `true` to perform major collection, whatever that means.
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*/
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public static function collect(major:Bool = false):Void
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{
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#if cpp
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cpp.vm.Gc.run(major);
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#else
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throw 'Not implemented!';
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#end
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}
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/**
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* Perform major garbage collection repeatedly until less than 16kb of memory is freed in one operation.
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* Should only be called from the main thread.
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*
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* NOTE: This is DIFFERENT from actual compaction,
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*/
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public static function compact():Void
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{
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#if cpp
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cpp.vm.Gc.compact();
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#else
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throw 'Not implemented!';
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#end
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}
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}
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