gecko-dev/dom/canvas/CacheInvalidator.cpp
2019-07-26 04:04:08 +00:00

47 lines
1.3 KiB
C++

/* -*- Mode: C++; tab-width: 13; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=13 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CacheInvalidator.h"
namespace mozilla {
void CacheInvalidator::InvalidateCaches() const {
// The only sane approach is to require caches to remove invalidators.
while (mCaches.size()) {
const auto& itr = mCaches.begin();
const auto pEntry = *itr;
pEntry->OnInvalidate();
MOZ_ASSERT(mCaches.find(pEntry) == mCaches.end());
}
}
// -
void AbstractCache::ResetInvalidators(InvalidatorListT&& newList) {
for (const auto& cur : mInvalidators) {
if (cur) {
(void)cur->mCaches.erase(this);
}
}
mInvalidators = std::move(newList);
for (const auto& cur : mInvalidators) {
// Don't assert that we insert, since there may be dupes in `invalidators`.
// (and it's not worth removing the dupes)
if (cur) {
(void)cur->mCaches.insert(this);
}
}
}
void AbstractCache::AddInvalidator(const CacheInvalidator& x) {
mInvalidators.push_back(&x);
x.mCaches.insert(this);
}
} // namespace mozilla