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// Test that multiple Debuggers behave reasonably.
load(libdir + "asserts.js");
let dbg1, dbg2, root1, root2;
function isTrackingAllocations(global, dbgObj) {
const site = dbgObj.makeDebuggeeValue(global.eval("({})")).allocationSite;
if (site) {
assertEq(typeof site, "object");
}
return !!site;
}
function test(name, fn) {
print();
print(name);
// Reset state.
root1 = newGlobal({newCompartment: true});
root2 = newGlobal({newCompartment: true});
dbg1 = new Debugger;
dbg2 = new Debugger;
// Run the test.
fn();
print(" OK");
}
test("Can track allocations even if a different debugger is already tracking " +
"them.",
() => {
let d1r1 = dbg1.addDebuggee(root1);
let d2r1 = dbg2.addDebuggee(root1);
dbg1.memory.trackingAllocationSites = true;
dbg2.memory.trackingAllocationSites = true;
assertEq(isTrackingAllocations(root1, d1r1), true);
assertEq(isTrackingAllocations(root1, d2r1), true);
});
test("Removing root1 as a debuggee from all debuggers should disable the " +
"allocation hook.",
() => {
dbg1.memory.trackingAllocationSites = true;
let d1r1 = dbg1.addDebuggee(root1);
dbg1.removeAllDebuggees();
assertEq(isTrackingAllocations(root1, d1r1), false);
});
test("Adding a new debuggee to a debugger that is tracking allocations should " +
"enable the hook for the new debuggee.",
() => {
dbg1.memory.trackingAllocationSites = true;
let d1r1 = dbg1.addDebuggee(root1);
assertEq(isTrackingAllocations(root1, d1r1), true);
});
test("Setting trackingAllocationSites to true should throw if the debugger " +
"cannot install the allocation hooks for *every* debuggee.",
() => {
let d1r1 = dbg1.addDebuggee(root1);
let d1r2 = dbg1.addDebuggee(root2);
// Can't install allocation hooks for root2 with this set.
root2.enableShellAllocationMetadataBuilder();
assertThrowsInstanceOf(() => dbg1.memory.trackingAllocationSites = true,
Error);
// And after it throws, its trackingAllocationSites accessor should reflect that
// allocation site tracking is still disabled in that Debugger.
assertEq(dbg1.memory.trackingAllocationSites, false);
assertEq(isTrackingAllocations(root1, d1r1), false);
assertEq(isTrackingAllocations(root2, d1r2), false);
});
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