tor-browser

The Tor Browser
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scoped_localalloc.h (904B)

      1 // Copyright 2021 The Chromium Authors
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef BASE_WIN_SCOPED_LOCALALLOC_H_
      6 #define BASE_WIN_SCOPED_LOCALALLOC_H_
      7 
      8 #include <memory>
      9 #include <utility>
     10 
     11 #include "base/win/windows_types.h"
     12 
     13 namespace base {
     14 namespace win {
     15 
     16 // unique_ptr deleter for LocalAlloc memory.
     17 struct LocalAllocDeleter {
     18  void operator()(void* ptr) const { ::LocalFree(ptr); }
     19 };
     20 
     21 template <typename T>
     22 using ScopedLocalAllocTyped = std::unique_ptr<T, LocalAllocDeleter>;
     23 
     24 using ScopedLocalAlloc = ScopedLocalAllocTyped<void>;
     25 
     26 // Make a typed ScopedLocalAlloc class and clear the original pointer.
     27 template <typename T>
     28 ScopedLocalAllocTyped<T> TakeLocalAlloc(T*& ptr) {
     29  return ScopedLocalAllocTyped<T>(std::exchange(ptr, nullptr));
     30 }
     31 
     32 }  // namespace win
     33 }  // namespace base
     34 
     35 #endif  // BASE_WIN_SCOPED_LOCALALLOC_H_