Source code
Revision control
Copy as Markdown
Other Tools
// |jit-test| skip-if: !getJitCompilerOptions()['blinterp.enable'] && !getJitCompilerOptions()['baseline.enable']
//
// Check that profiling stack frames captured during async resumption under
// nursery GC pressure have valid line/column information:
// ProfilingStackFrame::script() can still resolve tenured line/column data
setJitCompilerOption("baseline.warmup.trigger", 0);
setJitCompilerOption("ion.warmup.trigger", 1000);
const ITERATION_COUNT = 200;
const capturedStacks = [];
async function innerAsyncGc(i) {
// Force nursery pressure to make minor GCs likely during resumption.
let buf = [];
for (let k = 0; k < 200; k++) {
buf.push({ a: k, b: k * 2, c: "string-" + k });
}
await null;
capturedStacks.push(readGeckoProfilingStack());
return buf.length + i;
}
async function outerAsyncGc(count) {
for (let i = 0; i < count; i++) {
await innerAsyncGc(i);
}
}
enableGeckoProfiling();
outerAsyncGc(ITERATION_COUNT);
drainJobQueue();
disableGeckoProfiling();
let nonEmptyStacks = 0;
let asyncFramesChecked = 0;
let asyncFramesWithBadPosition = 0;
for (const stack of capturedStacks) {
if (stack.length > 0) {
nonEmptyStacks++;
}
for (const physicalFrame of stack) {
for (const frame of physicalFrame) {
if (!frame.label) {
continue;
}
if (
!frame.label.includes("innerAsyncGc") &&
!frame.label.includes("outerAsyncGc")
) {
continue;
}
asyncFramesChecked++;
// Skip the baseline-interpreter tier: readGeckoProfilingStack() reads
// line/column from extractStack(), which only annotates baseline-jit and
// ion frames.
if (frame.kind === "baseline-interpreter") {
continue;
}
const lineOk = typeof frame.line === "number" && frame.line > 0;
const columnOk = typeof frame.column === "number" && frame.column > 0;
if (!(lineOk && columnOk)) {
print(
`ERROR: ${frame.label} line=${frame.line} column=${frame.column} kind=${frame.kind}`
);
asyncFramesWithBadPosition++;
}
}
}
}
assertEq(
nonEmptyStacks > 0,
true,
"Expected at least one non-empty captured stack"
);
assertEq(
asyncFramesChecked > 0,
true,
"Expected to observe frames for the async functions"
);
assertEq(
asyncFramesWithBadPosition,
0,
"Every observed async frame should have a valid line/column"
);