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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 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 "mozilla/ScriptPreloader.h"
#include "ScriptPreloader-inl.h"
#include "mozilla/loader/ScriptCacheActors.h"
#include "mozilla/dom/ContentParent.h"
namespace mozilla {
namespace loader {
void ScriptCacheChild::Init(const Maybe<FileDescriptor>& cacheFile,
bool wantCacheData) {
AssertIsOnMainThread();
mWantCacheData = wantCacheData;
auto& cache = ScriptPreloader::GetChildSingleton();
(void)cache.InitCache(cacheFile, this);
if (!wantCacheData) {
// If the parent process isn't expecting any cache data from us, we're
// done.
Send__delete__(this, AutoTArray<ScriptData, 0>());
}
}
// Finalize the script cache for the content process, and send back data about
// any scripts executed up to this point.
void ScriptCacheChild::SendScriptsAndFinalize(
ScriptPreloader::ScriptHash& scripts) {
MOZ_ASSERT(mWantCacheData);
auto matcher = ScriptPreloader::Match<ScriptPreloader::ScriptStatus::Saved>();
JS::FrontendContext* fc = JS::NewFrontendContext();
if (!fc) {
return;
}
nsTArray<ScriptData> dataArray;
for (auto& script : IterHash(scripts, matcher)) {
if (!script->mSize && !script->XDREncode(fc)) {
continue;
}
auto data = dataArray.AppendElement();
data->url() = script->mURL;
data->cachePath() = script->mCachePath;
data->loadTime() = script->mLoadTime;
if (script->HasBuffer()) {
auto& xdrData = script->Buffer();
data->xdrData().AppendElements(xdrData.begin(), xdrData.length());
script->FreeData();
}
}
JS::DestroyFrontendContext(fc);
Send__delete__(this, dataArray);
}
void ScriptCacheChild::ActorDestroy(ActorDestroyReason aWhy) {
auto& cache = ScriptPreloader::GetChildSingleton();
cache.mChildActor = nullptr;
}
IPCResult ScriptCacheParent::Recv__delete__(nsTArray<ScriptData>&& scripts) {
if (!mWantCacheData && scripts.Length()) {
return IPC_FAIL(this, "UnexpectedScriptData");
}
// We don't want any more data from the process at this point.
mWantCacheData = false;
// Merge the child's script data with the parent's.
auto parent = static_cast<dom::ContentParent*>(Manager());
auto processType =
ScriptPreloader::GetChildProcessType(parent->GetRemoteType());
auto& cache = ScriptPreloader::GetChildSingleton();
for (auto& script : scripts) {
cache.NoteStencil(script.url(), script.cachePath(), processType,
std::move(script.xdrData()), script.loadTime());
}
return IPC_OK();
}
void ScriptCacheParent::ActorDestroy(ActorDestroyReason aWhy) {}
} // namespace loader
} // namespace mozilla
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