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test_gc_large.js
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test_gc_large.js
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console.log('=== GC Test with Large Objects ===\n');
let alloc1 = Ant.alloc();
console.log('Initial:');
console.log(' heapSize:', alloc1.heapSize);
console.log(' totalBytes:', alloc1.totalBytes);
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 alloc2 = Ant.alloc();
console.log('After allocating 5MB:');
console.log(' heapSize:', alloc2.heapSize);
console.log(' totalBytes:', alloc2.totalBytes);
console.log('');
// Free the objects
largeObjects = null;
let gc1 = Ant.gc();
console.log('GC 1: freed:', gc1.freed, 'arenaFreed:', gc1.arenaFreed);
let gc2 = Ant.gc();
console.log('GC 2: freed:', gc2.freed, 'arenaFreed:', gc2.arenaFreed);
let gc3 = Ant.gc();
console.log('GC 3: freed:', gc3.freed, 'arenaFreed:', gc3.arenaFreed);
let alloc3 = Ant.alloc();
console.log('After 3x GC:');
console.log(' heapSize:', alloc3.heapSize);
console.log(' totalBytes:', alloc3.totalBytes);
console.log('');
// Allocate again - if GC worked, heap 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 alloc4 = Ant.alloc();
console.log('After allocating another 5MB:');
console.log(' heapSize:', alloc4.heapSize);
console.log(' totalBytes:', alloc4.totalBytes);
console.log(' heap increase from GC point:', alloc4.heapSize - alloc3.heapSize);
console.log('');
console.log('If heapSize stayed same, GC reclaimed memory for reuse!');
console.log('=== Test Complete ===');

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