| <!doctype html> |
| <html> |
| <head> |
| <title>Test GC of ScriptProcessorNode</title> |
| <script src="../../resources/gc.js"></script> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="../resources/audit-util.js"></script> |
| <script src="../resources/audit.js"></script> |
| </head> |
| |
| <body> |
| <script> |
| // Power of two so there's no round-off in computing time from frame. |
| // Otherwise, it's arbitrary. |
| const sampleRate = 32768; |
| |
| const audit = Audit.createTaskRunner(); |
| |
| // Number of ScriptProcessorNodes to create for testing. Fairly |
| // arbitrary, but we don't need a huge number. |
| const numberOfNodes = 20; |
| |
| audit.define('Test GC of ScriptProcessorNodes', (task, should) => { |
| // Initial number of handlers. |
| let initialCount = 0; |
| let nodes = []; |
| let context = new OfflineAudioContext( |
| {length: sampleRate, sampleRate: sampleRate}); |
| asyncGC() |
| .then(() => { |
| initialCount = internals.audioHandlerCount(); |
| // For information only |
| should(initialCount, 'Number of handlers before GC') |
| .beEqualTo(initialCount); |
| }) |
| .then(() => { |
| // Create a bunch of ScriptProcessorNodes for testing |
| for (let k = 0; k < numberOfNodes; ++k) { |
| let node = context.createScriptProcessor(256, 1, 1); |
| node.onaudioprocess = (event) => { |
| // Just copy input to output. |
| let input = event.inputBuffer.getChannelData(0); |
| event.outputBuffer.copyToChannel(input, 0, 0); |
| }; |
| node.connect(context.destination); |
| nodes.push(node); |
| } |
| |
| // Wait a bit and then remove the event listener and drop all |
| // references to the nodes. |
| context.suspend(1024 / context.sampleRate) |
| .then(() => { |
| // Remove the event listener |
| for (let k = 0; k < nodes.length; ++k) { |
| nodes[k].onaudioprocess = null; |
| } |
| // Drop all references to the nodes |
| nodes.fill(null); |
| }) |
| .then(() => context.resume()); |
| |
| // Render the graph |
| return context.startRendering(); |
| }) |
| .then(() => { |
| // Collect garbage which should remove all of the |
| // ScriptProcessorNodes. |
| return asyncGC(); |
| }) |
| .then(() => { |
| should(nodes.length, 'Number of nodes created') |
| .beEqualTo(numberOfNodes); |
| should( |
| internals.audioHandlerCount(), 'Number of handlers after GC') |
| .beEqualTo(initialCount); |
| }) |
| .then(() => task.done()); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
