dom/canvas/CacheInvalidator.cpp

   1 /* -*- Mode: C++; tab-width: 13; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=13 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "CacheInvalidator.h"
   8
   9 namespace mozilla {
  10
  11 void CacheInvalidator::InvalidateCaches() const {
  12   // The only sane approach is to require caches to remove invalidators.
  13   while (!mCaches.empty()) {
  14     const auto& itr = mCaches.begin();
  15     const auto pEntry = *itr;
  16     pEntry->OnInvalidate();
  17     MOZ_ASSERT(mCaches.find(pEntry) == mCaches.end());
  18   }
  19 }
  20
  21 // -
  22
  23 void AbstractCache::ResetInvalidators(InvalidatorListT&& newList) {
  24   for (const auto& cur : mInvalidators) {
  25     if (cur) {
  26       (void)cur->mCaches.erase(this);
  27     }
  28   }
  29
  30   mInvalidators = std::move(newList);
  31
  32   for (const auto& cur : mInvalidators) {
  33     // Don't assert that we insert, since there may be dupes in `invalidators`.
  34     // (and it's not worth removing the dupes)
  35     if (cur) {
  36       (void)cur->mCaches.insert(this);
  37     }
  38   }
  39 }
  40
  41 void AbstractCache::AddInvalidator(const CacheInvalidator& x) {
  42   mInvalidators.push_back(&x);
  43   x.mCaches.insert(this);
  44 }
  45
  46 }  // namespace mozilla