Reintroducing MallocHooks changes with fix for infinite loop in MallocHooks on Platform::Exit.

runtime/vm/dart.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 "vm/dart.h"
 
 #include "vm/become.h"
 #include "vm/clustered_snapshot.h"
 #include "vm/code_observers.h"
 #include "vm/cpu.h"
 #include "vm/dart_api_state.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/handles.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/kernel_isolate.h"
+#include "vm/malloc_hooks.h"
 #include "vm/message_handler.h"
 #include "vm/metrics.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/object_id_ring.h"
 #include "vm/port.h"
 #include "vm/profiler.h"
 #include "vm/service_isolate.h"
 #include "vm/simulator.h"
 #include "vm/snapshot.h"
@@ skipping 117 matching lines @@
     FLAG_verify_gc_contains = true;
   }
 #endif
   set_thread_exit_callback(thread_exit);
   SetFileCallbacks(file_open, file_read, file_write, file_close);
   set_entropy_source_callback(entropy_source);
   OS::InitOnce();
   start_time_micros_ = OS::GetCurrentMonotonicMicros();
   VirtualMemory::InitOnce();
   OSThread::InitOnce();
+  MallocHooks::InitOnce();
   if (FLAG_support_timeline) {
     Timeline::InitOnce();
   }
   NOT_IN_PRODUCT(
       TimelineDurationScope tds(Timeline::GetVMStream(), "Dart::InitOnce"));
   Isolate::InitOnce();
   PortMap::InitOnce();
   FreeListElement::InitOnce();
   ForwardingCorpse::InitOnce();
   Api::InitOnce();
@@ skipping 317 matching lines @@
   if (FLAG_support_timeline) {
     if (FLAG_trace_shutdown) {
       OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Shutting down timeline\n",
                    UptimeMillis());
     }
     Timeline::Shutdown();
   }
   if (FLAG_trace_shutdown) {
     OS::PrintErr("[+%" Pd64 "ms] SHUTDOWN: Done\n", UptimeMillis());
   }
-
+  MallocHooks::TearDown();
   return NULL;
 }
 
 
 Isolate* Dart::CreateIsolate(const char* name_prefix,
                              const Dart_IsolateFlags& api_flags) {
   // Create a new isolate.
   Isolate* isolate = Isolate::Init(name_prefix, api_flags);
   return isolate;
 }
@@ skipping 244 matching lines @@
   return predefined_handles_->handles_.IsValidScopedHandle(address);
 }
 
 
 bool Dart::IsReadOnlyApiHandle(Dart_Handle handle) {
   ASSERT(predefined_handles_ != NULL);
   return predefined_handles_->api_handles_.IsValidHandle(handle);
 }
 
 }  // namespace dart