Don't use TLS for space iterators.

src/heap-profiler.cc

 // Copyright 2009-2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "heap-profiler.h"
 #include "profile-generator.h"
 
 namespace v8 {
 namespace internal {
 
-HeapProfiler::HeapProfiler()
-    : snapshots_(new HeapSnapshotsCollection()),
+HeapProfiler::HeapProfiler(Heap* heap)
+    : snapshots_(new HeapSnapshotsCollection(heap)),
       next_snapshot_uid_(1) {
 }
 
 
 HeapProfiler::~HeapProfiler() {
   delete snapshots_;
 }
 
 
 void HeapProfiler::ResetSnapshots() {
+  Heap* the_heap = heap();
   delete snapshots_;
-  snapshots_ = new HeapSnapshotsCollection();
+  snapshots_ = new HeapSnapshotsCollection(the_heap);
 }
 
 
 void HeapProfiler::SetUp() {
   Isolate* isolate = Isolate::Current();
   if (isolate->heap_profiler() == NULL) {
-    isolate->set_heap_profiler(new HeapProfiler());
+    isolate->set_heap_profiler(new HeapProfiler(isolate->heap()));
   }
 }
 
 
 void HeapProfiler::TearDown() {
   Isolate* isolate = Isolate::Current();
   delete isolate->heap_profiler();
   isolate->set_heap_profiler(NULL);
 }
 
@@ skipping 65 matching lines @@
     const char* name,
     int type,
     v8::ActivityControl* control,
     v8::HeapProfiler::ObjectNameResolver* resolver) {
   HeapSnapshot::Type s_type = static_cast<HeapSnapshot::Type>(type);
   HeapSnapshot* result =
       snapshots_->NewSnapshot(s_type, name, next_snapshot_uid_++);
   bool generation_completed = true;
   switch (s_type) {
     case HeapSnapshot::kFull: {
-      HeapSnapshotGenerator generator(result, control, resolver);
+      HeapSnapshotGenerator generator(result, control, resolver, heap());
       generation_completed = generator.GenerateSnapshot();
       break;
     }
     default:
       UNREACHABLE();
   }
   if (!generation_completed) {
     delete result;
     result = NULL;
   }
@@ skipping 70 matching lines @@
   profiler->ResetSnapshots();
 }
 
 
 void HeapProfiler::ObjectMoveEvent(Address from, Address to) {
   snapshots_->ObjectMoveEvent(from, to);
 }
 
 
 } }  // namespace v8::internal