startupcache/StartupCacheChild.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 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 "mozilla/scache/StartupCacheChild.h"
   8
   9 #include "mozilla/scache/StartupCache.h"
  10 #include "mozilla/dom/ContentParent.h"
  11
  12 namespace mozilla {
  13 namespace scache {
  14
  15 void StartupCacheChild::Init(bool wantCacheData) {
  16   mWantCacheData = wantCacheData;
  17
  18   auto* cache = StartupCache::GetSingleton();
  19   if (cache) {
  20     Unused << cache->InitChild(wantCacheData ? this : nullptr);
  21   }
  22
  23   if (!wantCacheData) {
  24     // If the parent process isn't expecting any cache data from us, we're
  25     // done.
  26     Send__delete__(this, AutoTArray<EntryData, 0>());
  27   }
  28 }
  29
  30 void StartupCacheChild::SendEntriesAndFinalize(StartupCache::Table& entries) {
  31   MOZ_RELEASE_ASSERT(mWantCacheData);
  32   nsTArray<EntryData> dataArray;
  33   for (auto iter = entries.iter(); !iter.done(); iter.next()) {
  34     const auto& key = iter.get().key();
  35     auto& value = iter.get().value();
  36
  37     if (!value.mData ||
  38         value.mRequestedOrder == kStartupCacheEntryNotRequested) {
  39       continue;
  40     }
  41
  42     auto data = dataArray.AppendElement();
  43
  44     data->key() = key;
  45     if (value.mFlags.contains(StartupCacheEntryFlags::AddedThisSession)) {
  46       data->data().AppendElements(
  47           reinterpret_cast<const uint8_t*>(value.mData.get()),
  48           value.mUncompressedSize);
  49     }
  50   }
  51
  52   mWantCacheData = false;
  53   Send__delete__(this, dataArray);
  54 }
  55
  56 void StartupCacheChild::ActorDestroy(ActorDestroyReason aWhy) {
  57   auto* cache = StartupCache::GetSingleton();
  58   if (cache) {
  59     cache->mChildActor = nullptr;
  60   }
  61 }
  62
  63 }  // namespace scache
  64 }  // namespace mozilla