Allow StackFrameIterator to be used on a different thread than the isolate whose stack frames are b…

runtime/vm/os_macos.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/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include "vm/os.h"
 
 #include <errno.h>  // NOLINT
@@ skipping 107 matching lines @@
   ASSERT(retval == 0);
   if (stack_limit.rlim_cur > INT_MAX) {
     retval = INT_MAX;
   } else {
     retval = stack_limit.rlim_cur;
   }
   return retval;
 }
 
 
+bool OS::AllowStackFrameIteratorFromAnotherThread() {
+  return false;
+}
+
+
 int OS::NumberOfAvailableProcessors() {
   return sysconf(_SC_NPROCESSORS_ONLN);
 }
 
 
 void OS::Sleep(int64_t millis) {
   int64_t micros = millis * kMicrosecondsPerMillisecond;
   SleepMicros(micros);
 }
 
@@ skipping 134 matching lines @@
 }
 
 
 void OS::Exit(int code) {
   exit(code);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)