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test_gc.js
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test_gc.js
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console.log('=== Testing Ant.alloc() (bdwgc) ===');
let alloc1 = Ant.alloc();
console.log('Initial allocation:');
console.log(' heapSize:', alloc1.heapSize);
console.log(' usedBytes:', alloc1.usedBytes);
console.log(' freeBytes:', alloc1.freeBytes);
console.log(' totalBytes:', alloc1.totalBytes);
console.log('\n=== Creating objects to allocate memory ===');
let arr = [];
for (let i = 0; i < 100; i = i + 1) {
arr.push({ value: i, name: 'item' + i });
}
console.log('Created array with 100 objects');
let alloc2 = Ant.alloc();
console.log('After allocation:');
console.log(' heapSize:', alloc2.heapSize);
console.log(' usedBytes:', alloc2.usedBytes);
console.log(' totalBytes:', alloc2.totalBytes);
console.log(' totalBytes increase:', alloc2.totalBytes - alloc1.totalBytes);
console.log('\n=== Testing Ant.stats() ===');
let stats1 = Ant.stats();
console.log('Memory stats:');
console.log(' arenaUsed:', stats1.arenaUsed);
console.log(' cstack:', stats1.cstack);
console.log(' gcHeapSize:', stats1.gcHeapSize);
console.log(' gcUsedBytes:', stats1.gcUsedBytes);
console.log(' gcFreeBytes:', stats1.gcFreeBytes);
console.log('\n=== Testing Ant.gc() ===');
arr = null;
let gcResult = Ant.gc();
console.log('GC result:');
console.log(' heapBefore:', gcResult.heapBefore);
console.log(' heapAfter:', gcResult.heapAfter);
console.log(' usedBefore:', gcResult.usedBefore);
console.log(' usedAfter:', gcResult.usedAfter);
console.log(' freed:', gcResult.freed);
console.log(' arenaBefore:', gcResult.arenaBefore);
console.log(' arenaAfter:', gcResult.arenaAfter);
console.log(' arenaFreed:', gcResult.arenaFreed);
console.log('\n=== Testing Ant.stats() ===');
let stats2 = Ant.stats();
console.log('Memory stats:');
console.log(' arenaUsed:', stats2.arenaUsed);
console.log(' cstack:', stats2.cstack);
console.log(' gcHeapSize:', stats2.gcHeapSize);
console.log(' gcUsedBytes:', stats2.gcUsedBytes);
console.log(' gcFreeBytes:', stats2.gcFreeBytes);
console.log('\n=== Verifying memory after GC ===');
let alloc3 = Ant.alloc();
console.log('After GC:');
console.log(' heapSize:', alloc3.heapSize);
console.log(' usedBytes:', alloc3.usedBytes);
console.log(' freeBytes:', alloc3.freeBytes);
console.log('\n=== Testing multiple GC cycles ===');
for (let cycle = 0; cycle < 3; cycle = cycle + 1) {
console.log('Cycle', cycle + 1);
let temp = [];
for (let i = 0; i < 50; i = i + 1) {
temp.push({ data: 'test data ' + i });
}
let beforeGc = Ant.alloc();
console.log(' Before GC - usedBytes:', beforeGc.usedBytes);
temp = null;
let gc = Ant.gc();
console.log(' After GC - usedAfter:', gc.usedAfter, 'freed:', gc.freed, 'arenaFreed:', gc.arenaFreed);
}
console.log('\n=== Testing Ant.stats() ===');
let stats3 = Ant.stats();
console.log('Memory stats:');
console.log(' arenaUsed:', stats3.arenaUsed);
console.log(' cstack:', stats3.cstack);
console.log(' gcHeapSize:', stats3.gcHeapSize);
console.log(' gcUsedBytes:', stats3.gcUsedBytes);
console.log(' gcFreeBytes:', stats3.gcFreeBytes);
console.log('\n=== Testing stats consistency ===');
let statsA = Ant.stats();
let allocA = Ant.alloc();
console.log('Stats and alloc should match:');
console.log(' stats.gcUsedBytes:', statsA.gcUsedBytes);
console.log(' alloc.usedBytes:', allocA.usedBytes);
console.log(' match:', statsA.gcUsedBytes === allocA.usedBytes);
console.log('\n=== Test complete ===');

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