[fuchsia] Update profiler assertions to allow for profiler running on a different thread.

runtime/vm/stack_frame.cc

 // Copyright (c) 2012, 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 "vm/stack_frame.h"
 
 #include "platform/memory_sanitizer.h"
 #include "vm/assembler.h"
 #include "vm/deopt_instructions.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 #include "vm/raw_object.h"
 #include "vm/reusable_handles.h"
 #include "vm/stub_code.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 
 bool StackFrame::IsStubFrame() const {
   ASSERT(!(IsEntryFrame() || IsExitFrame()));
-#if !defined(HOST_OS_WINDOWS)
-  // On Windows, the profiler calls this from a separate thread where
-  // Thread::Current() is NULL, so we cannot create a NoSafepointScope.
+#if !defined(HOST_OS_WINDOWS) && !defined(HOST_OS_FUCHSIA)
+  // On Windows and Fuchsia, the profiler calls this from a separate thread
+  // where Thread::Current() is NULL, so we cannot create a NoSafepointScope.
   NoSafepointScope no_safepoint;
 #endif
   RawCode* code = GetCodeObject();
   ASSERT(code != Object::null());
   const intptr_t cid = code->ptr()->owner_->GetClassId();
   ASSERT(cid == kNullCid || cid == kClassCid || cid == kFunctionCid);
   return cid == kNullCid || cid == kClassCid;
 }
 
 
@@ skipping 173 matching lines @@
     return code.function();
   }
   return Function::null();
 }
 
 
 RawCode* StackFrame::LookupDartCode() const {
 // We add a no gc scope to ensure that the code below does not trigger
 // a GC as we are handling raw object references here. It is possible
 // that the code is called while a GC is in progress, that is ok.
-#if !defined(HOST_OS_WINDOWS)
-  // On Windows, the profiler calls this from a separate thread where
-  // Thread::Current() is NULL, so we cannot create a NoSafepointScope.
+#if !defined(HOST_OS_WINDOWS) && !defined(HOST_OS_FUCHSIA)
+  // On Windows and Fuchsia, the profiler calls this from a separate thread
+  // where Thread::Current() is NULL, so we cannot create a NoSafepointScope.
   NoSafepointScope no_safepoint;
 #endif
   RawCode* code = GetCodeObject();
   if ((code != Code::null()) &&
       (code->ptr()->owner_->GetClassId() == kFunctionCid)) {
     return code;
   }
   return Code::null();
 }
 
@@ skipping 350 matching lines @@
                             StackFrameIterator::kNoCrossThreadIteration);
   StackFrame* frame = frames.NextFrame();
   while (frame != NULL) {
     frame = frames.NextFrame();
   }
 }
 #endif
 
 
 }  // namespace dart