Diffusion Ant (type-hints-typescript) Code

ant/tests/test_gc_large.js
899dad6b8a9etype-hints-typescript

test_gc_large.js
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			console.log('=== GC Test with Large Objects ===\n');

			function fmt(bytes) {
			if (bytes < 1024) return bytes + ' B';
			if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
			return (bytes / 1024 / 1024).toFixed(2) + ' MB';
			}

			let stats1 = Ant.stats();
			console.log('Initial:');
			console.log(' arenaUsed:', fmt(stats1.arenaUsed));
			console.log(' arenaSize:', fmt(stats1.arenaSize));
			console.log(' rss:', fmt(stats1.rss));
			console.log('');

			// Allocate large objects
			let largeObjects = [];
			for (let i = 0; i < 5; i++) {
			let arr = new Array(1024 * 128);
			for (let j = 0; j < arr.length; j += 1024) {
			arr[j] = i;
			}
			largeObjects.push(arr);
			}

			let stats2 = Ant.stats();
			console.log('After allocating large arrays:');
			console.log(' arenaUsed:', fmt(stats2.arenaUsed));
			console.log(' arenaSize:', fmt(stats2.arenaSize));
			console.log(' rss:', fmt(stats2.rss));
			console.log('');

			// Free the objects
			largeObjects = null;

			let stats3 = Ant.stats();
			console.log('\nAfter 3x GC:');
			console.log(' arenaUsed:', fmt(stats3.arenaUsed));
			console.log(' arenaSize:', fmt(stats3.arenaSize));
			console.log(' rss:', fmt(stats3.rss));
			console.log('');

			// Allocate again - if GC worked, arena shouldn't grow much
			let moreObjects = [];
			for (let i = 0; i < 5; i++) {
			let arr = new Array(1024 * 128);
			for (let j = 0; j < arr.length; j += 1024) {
			arr[j] = i;
			}
			moreObjects.push(arr);
			}

			let stats4 = Ant.stats();
			console.log('After allocating another batch:');
			console.log(' arenaUsed:', fmt(stats4.arenaUsed));
			console.log(' arenaSize:', fmt(stats4.arenaSize));
			console.log(' rss:', fmt(stats4.rss));
			console.log(' arenaUsed increase from GC point:', fmt(stats4.arenaUsed - stats3.arenaUsed));
			console.log('');

			console.log('If arenaSize stayed same, GC reclaimed memory for reuse!');
			console.log('=== Test Complete ===');

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