Move reusable handles from isolate to thread.

runtime/vm/profiler.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/address_sanitizer.h"
 #include "platform/memory_sanitizer.h"
 #include "platform/utils.h"
 
 #include "vm/allocation.h"
 #include "vm/atomic.h"
@@ skipping 1235 matching lines @@
         break;
       }
       processed_sample->Add(current->At(i));
     }
 
     truncated = truncated || current->truncated_trace();
     current = Next(current);
   }
 
   if (!sample->exit_frame_sample()) {
-    Isolate* isolate = thread->isolate();
     Isolate* vm_isolate = Dart::vm_isolate();
-    processed_sample->FixupCaller(isolate,
+    processed_sample->FixupCaller(thread,
                                   vm_isolate,
                                   sample->pc_marker(),
                                   sample->GetStackBuffer());
   }
 
   processed_sample->set_truncated(truncated);
   return processed_sample;
 }
 
 
@@ skipping 20 matching lines @@
 ProcessedSample::ProcessedSample()
     : pcs_(kSampleSize),
       timestamp_(0),
       vm_tag_(0),
       user_tag_(0),
       allocation_cid_(-1),
       truncated_(false) {
 }
 
 
-void ProcessedSample::FixupCaller(Isolate* isolate,
+void ProcessedSample::FixupCaller(Thread* thread,
                                   Isolate* vm_isolate,
                                   uword pc_marker,
                                   uword* stack_buffer) {
-  REUSABLE_CODE_HANDLESCOPE(isolate);
+  REUSABLE_CODE_HANDLESCOPE(thread);
   // Lookup code object for leaf frame.
   Code& code = reused_code_handle.Handle();
-  code = FindCodeForPC(isolate, vm_isolate, At(0));
+  code = FindCodeForPC(thread->isolate(), vm_isolate, At(0));
   if (code.IsNull()) {
     return;
   }
   if (code.compile_timestamp() > timestamp()) {
     // Code compiled after sample. Ignore.
     return;
   }
-  CheckForMissingDartFrame(isolate, vm_isolate, code, pc_marker, stack_buffer);
+  CheckForMissingDartFrame(
+      thread->isolate(), vm_isolate, code, pc_marker, stack_buffer);
 }
 
 
 void ProcessedSample::CheckForMissingDartFrame(Isolate* isolate,
                                                Isolate* vm_isolate,
                                                const Code& code,
                                                uword pc_marker,
                                                uword* stack_buffer) {
   // Some stubs (and intrinsics) do not push a frame onto the stack leaving
   // the frame pointer in the caller.
@@ skipping 66 matching lines @@
                                                uword pc) {
   return vm_isolate->heap()->CodeContains(pc)
          || isolate->heap()->CodeContains(pc);
 }
 
 
 ProcessedSampleBuffer::ProcessedSampleBuffer() {
 }
 
 }  // namespace dart