/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim: set ts=8 sts=4 et sw=4 tw=99: */

/* 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)

{

    mWantCacheData = wantCacheData;

    auto& cache = ScriptPreloader::GetChildSingleton();

    Unused << 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);

    AutoSafeJSAPI jsapi;

    auto matcher = ScriptPreloader::Match<ScriptPreloader::ScriptStatus::Saved>();

    nsTArray<ScriptData> dataArray;

    for (auto& script : IterHash(scripts, matcher)) {

        if (!script->mSize && !script->XDREncode(jsapi.cx())) {

            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();

        }

    }

    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.NoteScript(script.url(), script.cachePath(), processType,

                         std::move(script.xdrData()), script.loadTime());

    }

    return IPC_OK();

}

void

ScriptCacheParent::ActorDestroy(ActorDestroyReason aWhy)

{}

} // namespace loader

} // namespace mozilla