Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/Sources/formale Sprachen/C/Firefox/netwerk/ipc/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 6 kB

Quelle SocketProcessBridgeChild.cpp Sprache: C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "SocketProcessBridgeChild.h"
#include "SocketProcessLogging.h"

#include "mozilla/AppShutdown.h"
#include "mozilla/Components.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/net/NeckoChild.h"
#include "nsIObserverService.h"
#include "nsThreadUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_network.h"

namespace mozilla {

using dom::ContentChild;

namespace net {

StaticRefPtr<SocketProcessBridgeChild>
    SocketProcessBridgeChild::sSocketProcessBridgeChild;

NS_IMPL_ISUPPORTS(SocketProcessBridgeChild, nsIObserver)

// static
bool SocketProcessBridgeChild::Create(
    Endpoint<PSocketProcessBridgeChild>&& aEndpoint) {
  MOZ_ASSERT(NS_IsMainThread());

  sSocketProcessBridgeChild = new SocketProcessBridgeChild();

  if (!aEndpoint.Bind(sSocketProcessBridgeChild)) {
    MOZ_ASSERT(false, "Bind failed!");
    sSocketProcessBridgeChild = nullptr;
    return false;
  }

  nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
  if (os) {
    os->AddObserver(sSocketProcessBridgeChild, "content-child-shutdown", false);
  }

  sSocketProcessBridgeChild->mSocketProcessPid = aEndpoint.OtherPid();
  return true;
}

// static
already_AddRefed<SocketProcessBridgeChild>
SocketProcessBridgeChild::GetSingleton() {
  RefPtr<SocketProcessBridgeChild> child = sSocketProcessBridgeChild;
  return child.forget();
}

// static
RefPtr<SocketProcessBridgeChild::GetPromise>
SocketProcessBridgeChild::GetSocketProcessBridge() {
  MOZ_ASSERT(NS_IsMainThread());

  if (!StaticPrefs::network_process_enabled()) {
    return GetPromise::CreateAndReject(nsCString("Socket process disabled!"),
                                       __func__);
  }

  if (!gNeckoChild) {
    return GetPromise::CreateAndReject(nsCString("No NeckoChild!"), __func__);
  }

  // ContentChild is shutting down, we should not try to create
  // SocketProcessBridgeChild.
  ContentChild* content = ContentChild::GetSingleton();
  if (!content || content->IsShuttingDown()) {
    return GetPromise::CreateAndReject(
        nsCString("ContentChild is shutting down."), __func__);
  }

  if (sSocketProcessBridgeChild) {
    return GetPromise::CreateAndResolve(sSocketProcessBridgeChild, __func__);
  }

  return gNeckoChild->SendInitSocketProcessBridge()->Then(
      GetMainThreadSerialEventTarget(), __func__,
      [](NeckoChild::InitSocketProcessBridgePromise::ResolveOrRejectValue&&
             aResult) {
        ContentChild* content = ContentChild::GetSingleton();
        if (!content || content->IsShuttingDown()) {
          return GetPromise::CreateAndReject(
              nsCString("ContentChild is shutting down."), __func__);
        }
        if (!sSocketProcessBridgeChild) {
          if (aResult.IsReject()) {
            return GetPromise::CreateAndReject(
                nsCString("SendInitSocketProcessBridge failed"), __func__);
          }

          if (!aResult.ResolveValue().IsValid()) {
            return GetPromise::CreateAndReject(
                nsCString(
                    "SendInitSocketProcessBridge resolved with an invalid "
                    "endpoint!"),
                __func__);
          }

          if (!SocketProcessBridgeChild::Create(
                  std::move(aResult.ResolveValue()))) {
            return GetPromise::CreateAndReject(
                nsCString("SendInitSocketProcessBridge resolved with a valid "
                          "endpoint, "
                          "but SocketProcessBridgeChild::Create failed!"),
                __func__);
          }
        }

        return GetPromise::CreateAndResolve(sSocketProcessBridgeChild,
                                            __func__);
      });
}

SocketProcessBridgeChild::SocketProcessBridgeChild() : mShuttingDown(false) {
  LOG(("CONSTRUCT SocketProcessBridgeChild::SocketProcessBridgeChild\n"));
}

SocketProcessBridgeChild::~SocketProcessBridgeChild() {
  LOG(("DESTRUCT SocketProcessBridgeChild::SocketProcessBridgeChild\n"));
}

mozilla::ipc::IPCResult SocketProcessBridgeChild::RecvTest() {
  LOG(("SocketProcessBridgeChild::RecvTest\n"));
  return IPC_OK();
}

void SocketProcessBridgeChild::ActorDestroy(ActorDestroyReason aWhy) {
  LOG(("SocketProcessBridgeChild::ActorDestroy\n"));
  if (AbnormalShutdown == aWhy) {
    if (gNeckoChild &&
        !AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
      // Let NeckoParent know that the socket process connections must be
      // rebuilt.
      gNeckoChild->SendResetSocketProcessBridge();
    }

    nsresult res;
    nsCOMPtr<nsISerialEventTarget> mSTSThread;
    mSTSThread = mozilla::components::SocketTransport::Service(&res);
    if (NS_SUCCEEDED(res) && mSTSThread) {
      // This must be called off the main thread.  If we don't make this call
      // ipc::BackgroundChild::GetOrCreateSocketActorForCurrentThread() will
      // return the previous actor that is no longer able to send. This causes
      // rebuilding the socket process connections to fail.
      MOZ_ALWAYS_SUCCEEDS(mSTSThread->Dispatch(NS_NewRunnableFunction(
          "net::SocketProcessBridgeChild::ActorDestroy",
          []() { ipc::BackgroundChild::CloseForCurrentThread(); })));
    }
  }

  nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
  if (os) {
    os->RemoveObserver(this, "content-child-shutdown");
  }
  GetCurrentSerialEventTarget()->Dispatch(
      NewRunnableMethod("net::SocketProcessBridgeChild::DeferredDestroy", this,
                        &SocketProcessBridgeChild::DeferredDestroy));
  mShuttingDown = true;
}

NS_IMETHODIMP
SocketProcessBridgeChild::Observe(nsISupports* aSubject, const char* aTopic,
                                  const char16_t* aData) {
  if (!strcmp(aTopic, "content-child-shutdown")) {
    PSocketProcessBridgeChild::Close();
  }
  return NS_OK;
}

void SocketProcessBridgeChild::DeferredDestroy() {
  MOZ_ASSERT(NS_IsMainThread());

  sSocketProcessBridgeChild = nullptr;
}

}  // namespace net
}  // namespace mozilla

quality100%

¤ Dauer der Verarbeitung: 0.25 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.