blob: e42b2a72722fe50602c7a1dc634a1375e0a6405d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// If a Debugger survives its debuggee, its object cache must still be swept.
var g2arr = []; // non-debuggee globals
var xarr = []; // debuggee objects
var N = 4, M = 4;
for (var i = 0; i < N; i++) {
var g1 = newGlobal({newCompartment: true});
g1.M = M;
var dbg = new Debugger(g1);
var g2 = g1.eval("newGlobal('same-compartment')");
g1.x = g2.eval("x = {};");
dbg.onDebuggerStatement = function (frame) { xarr.push(frame.eval("x").return); };
g1.eval("debugger;");
g2arr.push(g2);
g1 = null;
gc();
}
// At least some of the debuggees have probably been collected at this
// point. It is nondeterministic, though.
assertEq(g2arr.length, N);
assertEq(xarr.length, N);
// Try to make g2arr[i].eval eventually allocate a new object in the same
// location as a previously gc'd object. If the object caches are not being
// swept, the pointer coincidence will cause a Debugger.Object to be erroneously
// reused.
for (var i = 0; i < N; i++) {
var obj = xarr[i];
for (j = 0; j < M; j++) {
assertEq(obj instanceof Debugger.Object, true);
g2arr[i].eval("x = x.prop = {};");
obj = obj.getOwnPropertyDescriptor("prop").value;;
assertEq("seen" in obj, false);
obj.seen = true;
gc();
}
}
|
