Bug 749698 - Setup compartment to collect when gcPoke set (r=igor)

js/src/jsgc.cpp

@@ -3688,10 +3688,8 @@ Collect(JSRuntime *rt, bool incremental, int64_t budget,
                 callback(rt, JSGC_BEGIN);
         }
 
-        {
+        rt->gcPoke = false;
-            rt->gcPoke = false;
+        GCCycle(rt, incremental, budget, gckind);
-            GCCycle(rt, incremental, budget, gckind);
-        }
 
         if (rt->gcIncrementalState == NO_INCREMENTAL) {
             gcstats::AutoPhase ap(rt->gcStats, gcstats::PHASE_GC_END);
@@ -3699,6 +3697,10 @@ Collect(JSRuntime *rt, bool incremental, int64_t budget,
                 callback(rt, JSGC_END);
         }
 
+        /* Need to re-schedule all compartments for GC. */
+        if (!rt->hasContexts() && rt->gcPoke)
+            PrepareForFullGC(rt);
+
         /*
          * On shutdown, iterate until finalizers or the JSGC_END callback
          * stop creating garbage.