tools/profiler/tests/test_enterjit_osr_disabling.js

Tue, 06 Jan 2015 21:39:09 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Tue, 06 Jan 2015 21:39:09 +0100
branch
TOR_BUG_9701
changeset 8
97036ab72558
permissions
-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 function run_test() {
     2     let p = Cc["@mozilla.org/tools/profiler;1"];
     3     // Just skip the test if the profiler component isn't present.
     4     if (!p)
     5 	return;
     6     p = p.getService(Ci.nsIProfiler);
     7     if (!p)
     8 	return;
    10     do_check_true(!p.IsActive());
    12     p.StartProfiler(100, 10, ["js"], 1);
    13     // The function is entered with the profiler enabled
    14     (function (){
    15 	p.StopProfiler();
    16 	let n = 10000;
    17 	while (--n);  // OSR happens here with the profiler disabled.
    18 	// An assertion will fail when this function returns, if the
    19 	// SPS stack was misbalanced.
    20     })();
    21 }

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