Add creation tracking for ActiveVerifier.

base/win/scoped_handle.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/win/scoped_handle.h"
 
 #include <stddef.h>
 
 #include <unordered_map>
 
@@ skipping 77 matching lines @@
   virtual void StopTracking(HANDLE handle, const void* owner,
                             const void* pc1, const void* pc2);
   virtual void Disable();
   virtual void OnHandleBeingClosed(HANDLE handle);
 
  private:
   ~ActiveVerifier();  // Not implemented.
 
   static void InstallVerifier();
 
+  base::debug::StackTrace creation_stack_;
   bool enabled_;
   bool closing_;
   NativeLock* lock_;
   HandleMap map_;
   DISALLOW_COPY_AND_ASSIGN(ActiveVerifier);
 };
 ActiveVerifier* g_active_verifier = NULL;
 
 // static
 ActiveVerifier* ActiveVerifier::Get() {
@@ skipping 53 matching lines @@
   DWORD thread_id = GetCurrentThreadId();
 
   AutoNativeLock lock(*lock_);
 
   Info handle_info = { owner, pc1, pc2, base::debug::StackTrace(), thread_id };
   std::pair<HANDLE, Info> item(handle, handle_info);
   std::pair<HandleMap::iterator, bool> result = map_.insert(item);
   if (!result.second) {
     Info other = result.first->second;
     base::debug::Alias(&other);
+    base::debug::Alias(&creation_stack_);
     CHECK(false);  // Attempt to start tracking already tracked handle.
   }
 }
 
 void ActiveVerifier::StopTracking(HANDLE handle, const void* owner,
                                   const void* pc1, const void* pc2) {
   if (!enabled_)
     return;
 
   AutoNativeLock lock(*lock_);
   HandleMap::iterator i = map_.find(handle);
-  if (i == map_.end())
+  if (i == map_.end()) {
+    base::debug::Alias(&creation_stack_);
     CHECK(false);  // Attempting to close an untracked handle.
+  }
 
   Info other = i->second;
   if (other.owner != owner) {
     base::debug::Alias(&other);
+    base::debug::Alias(&creation_stack_);
     CHECK(false);  // Attempting to close a handle not owned by opener.
   }
 
   map_.erase(i);
 }
 
 void ActiveVerifier::Disable() {
   enabled_ = false;
 }
 
 void ActiveVerifier::OnHandleBeingClosed(HANDLE handle) {
   if (!enabled_)
     return;
 
   AutoNativeLock lock(*lock_);
   if (closing_)
     return;
 
   HandleMap::iterator i = map_.find(handle);
   if (i == map_.end())
     return;
 
   Info other = i->second;
   base::debug::Alias(&other);
+  base::debug::Alias(&creation_stack_);
   CHECK(false);  // CloseHandle called on tracked handle.
 }
 
 }  // namespace
 
 void* GetHandleVerifier() {
   return g_active_verifier;
 }
 
 namespace base {
@@ skipping 19 matching lines @@
 void DisableHandleVerifier() {
   return ActiveVerifier::Get()->Disable();
 }
 
 void OnHandleBeingClosed(HANDLE handle) {
   return ActiveVerifier::Get()->OnHandleBeingClosed(handle);
 }
 
 }  // namespace win
 }  // namespace base