Mypal68/dom/canvas/CacheInvalidator.cpp
2022-04-16 07:41:55 +03:00

49 lines
1.2 KiB
C++

/* 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());
}
}
// -
AbstractCache::InvalidatorListT AbstractCache::ResetInvalidators(
InvalidatorListT&& newList) {
for (const auto& cur : mInvalidators) {
if (cur) {
(void)cur->mCaches.erase(this);
}
}
auto ret = std::move(mInvalidators);
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);
}
}
return ret;
}
void AbstractCache::AddInvalidator(const CacheInvalidator& x) {
mInvalidators.push_back(&x);
x.mCaches.insert(this);
}
} // namespace mozilla