// Check that asm.js code shows up on the stack.
add_task(async () => { // This test assumes that it's starting on an empty profiler stack. // (Note that the other profiler tests also assume the profiler // isn't already started.) Assert.ok(!Services.profiler.IsActive());
let jsFuns = Cu.getJSTestingFunctions(); if (!jsFuns.isAsmJSCompilationAvailable()) { return;
}
const ms = 10;
await Services.profiler.StartProfiler(10000, ms, ["js"]);
let stack = null; function ffi_function() { var delayMS = 5; while (1) {
let then = Date.now(); do { // do nothing
} while (Date.now() - then < delayMS);
var thread0 = Services.profiler.getProfileData().threads[0];
if (delayMS > 30000) { return;
}
delayMS *= 2;
if (!thread0.samples.data.length) { continue;
}
var lastSample = thread0.samples.data[thread0.samples.data.length - 1];
stack = String(getInflatedStackLocations(thread0, lastSample)); if (stack.includes("trampoline")) { return;
}
}
}
function asmjs_module(global, ffis) { "use asm"; var ffi = ffis.ffi; function asmjs_function() {
ffi();
} return asmjs_function;
}
Assert.ok(jsFuns.isAsmJSModule(asmjs_module));
var asmjs_function = asmjs_module(null, { ffi: ffi_function }); Assert.ok(jsFuns.isAsmJSFunction(asmjs_function));
asmjs_function();
Assert.notEqual(stack, null);
var i1 = stack.indexOf("entry trampoline"); Assert.ok(i1 !== -1); var i2 = stack.indexOf("asmjs_function"); Assert.ok(i2 !== -1); var i3 = stack.indexOf("exit trampoline"); Assert.ok(i3 !== -1); var i4 = stack.indexOf("ffi_function"); Assert.ok(i4 !== -1); Assert.ok(i1 < i2); Assert.ok(i2 < i3); Assert.ok(i3 < i4);
await Services.profiler.StopProfiler();
});
Messung V0.5
¤ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet)
¤
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