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// Functions shared by gc/pretenure-*.js tests
const is64bit = getBuildConfiguration("pointer-byte-size") === 8;
// Count of objects that will exceed the size of the nursery.
const nurseryCount = is64bit ? 25000 : 50000;
// Count of objects that will exceed the tenured heap collection threshold.
const tenuredCount = is64bit ? 300000 : 600000;
function setupPretenureTest() {
// The test requires that baseline is enabled and is not bypassed with
// --ion-eager or similar.
let jitOptions = getJitCompilerOptions();
if (!jitOptions['baseline.enable'] ||
jitOptions['ion.warmup.trigger'] <= jitOptions['baseline.warmup.trigger']) {
print("Unsupported JIT options");
quit();
}
// Disable zeal modes that will interfere with this test.
gczeal(0);
// Restrict nursery size so we can fill it quicker, and ensure it is resized.
let size = 1024 * 1024;
if (gcparam("semispaceNurseryEnabled")) {
size *= 2;
}
gcparam("minNurseryBytes", size);
gcparam("maxNurseryBytes", size);
// Limit allocation threshold so we trigger major GCs sooner.
gcparam("allocationThreshold", 1 /* MB */);
// Disable incremental GC so there's at most one minor GC per major GC.
gcparam("incrementalGCEnabled", false);
// Disable balanced heap limits to make the number of GCs predictable.
gcparam("balancedHeapLimitsEnabled", false);
// Force a nursery collection to apply size parameters.
let o = {};
gc();
}
function allocateObjects(count, longLived) {
let array = new Array(nurseryCount);
for (let i = 0; i < count; i++) {
let x = {x: i};
if (longLived) {
array[i % nurseryCount] = x;
} else {
array[0] = x;
}
}
return array;
}
function allocateArrays(count, longLived) {
let array = new Array(nurseryCount);
for (let i = 0; i < count; i++) {
let x = [i];
if (longLived) {
array[i % nurseryCount] = x;
} else {
array[0] = x;
}
}
return array;
}
function gcCounts() {
let major = gcparam("majorGCNumber")
let minor = gcparam("minorGCNumber");
// Only report minor collections that didn't happen as part of a major GC.
assertEq(minor >= major, true);
minor -= major;
return { minor, major };
}
function runTestAndCountCollections(thunk) {
let initialCounts = gcCounts();
thunk();
let finalCounts = gcCounts();
return { minor: finalCounts.minor - initialCounts.minor,
major: finalCounts.major - initialCounts.major };
}