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js/src/jit-test/tests/debug/Environment-gc-02.js@6474c204b198 (annotated)

js/src/jit-test/tests/debug/Environment-gc-02.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	// A closure's .environment keeps the lexical environment alive even if the closure is destroyed.
michael@0	2
michael@0	3	var N = 4;
michael@0	4	var g = newGlobal();
michael@0	5	g.eval("function add(a) { return function (b) { return eval('a + b'); }; }");
michael@0	6	var dbg = new Debugger;
michael@0	7	var gw = dbg.addDebuggee(g);
michael@0	8	var aw = gw.getOwnPropertyDescriptor("add").value;
michael@0	9
michael@0	10	// Create N closures and collect environments.
michael@0	11	var arr = [];
michael@0	12	for (var i = 0; i < N; i++)
michael@0	13	arr[i] = aw.call(null, i).return.environment;
michael@0	14
michael@0	15	// Test that they work now.
michael@0	16	function check() {
michael@0	17	for (var i = 0; i < N; i++) {
michael@0	18	assertEq(arr[i].find("b"), null);
michael@0	19	assertEq(arr[i].find("a"), arr[i]);
michael@0	20	}
michael@0	21	}
michael@0	22	check();
michael@0	23
michael@0	24	// Test that they work after gc.
michael@0	25	gc();
michael@0	26	gc({});
michael@0	27	g.gc(g);
michael@0	28	check();