michael@0: function run_test() {
michael@0:     let p = Cc["@mozilla.org/tools/profiler;1"];
michael@0:     // Just skip the test if the profiler component isn't present.
michael@0:     if (!p)
michael@0: 	return;
michael@0:     p = p.getService(Ci.nsIProfiler);
michael@0:     if (!p)
michael@0: 	return;
michael@0: 
michael@0:     do_check_true(!p.IsActive());
michael@0: 
michael@0:     p.StartProfiler(100, 10, ["js"], 1);
michael@0:     // The function is entered with the profiler enabled
michael@0:     (function (){
michael@0: 	p.StopProfiler();
michael@0: 	let n = 10000;
michael@0: 	while (--n);  // OSR happens here with the profiler disabled.
michael@0: 	// An assertion will fail when this function returns, if the
michael@0: 	// SPS stack was misbalanced.
michael@0:     })();
michael@0: }