author Jan de Mooij <>
Sat, 12 Jan 2019 10:50:04 +0000
changeset 453631 cfa1c48c717048f00eb4811b5719cd716eb1e5b3
parent 452446 f0a91d36587266d7454a450c6044d573664fbed5
child 474862 ddf4012a7652e36d144fc43bc99335276deeafbe
permissions -rw-r--r--
Bug 1518753 part 5 - Stop using JSProtoKey for initial shapes. r=tcampbell I added this optimization in bug 1299107 to share more shapes across compartments. Unfortunately this doesn't play well with same-compartment realms (ICs can misbehave) because it relies on compartments being isolated from each other. I think we should remove this optimization: * Fixing the IC issue is impossible without deoptimizing everything. * I added it mainly for chrome globals. The shared-JSM-global work has eliminated the need for this there. * Same-compartment realms win memory back by eliminating CCWs etc. * It's quite a lot of complicated code. Differential Revision:

/* -*- 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 */

/* The privileged system principal. */

#ifndef mozilla_SystemPrincipal_h
#define mozilla_SystemPrincipal_h

#include "nsIPrincipal.h"
#include "nsJSPrincipals.h"

#include "mozilla/BasePrincipal.h"

#define NS_SYSTEMPRINCIPAL_CID                      \
  {                                                 \
    0x4a6212db, 0xaccb, 0x11d3, {                   \
      0xb7, 0x65, 0x0, 0x60, 0xb0, 0xb6, 0xce, 0xcb \
    }                                               \

namespace mozilla {

class SystemPrincipal final : public BasePrincipal {
  SystemPrincipal() : BasePrincipal(eSystemPrincipal) {}

  static already_AddRefed<SystemPrincipal> Create();

  static PrincipalKind Kind() { return eSystemPrincipal; }

  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
  uint32_t GetHashValue() override;
  NS_IMETHOD GetURI(nsIURI** aURI) override;
  NS_IMETHOD GetDomain(nsIURI** aDomain) override;
  NS_IMETHOD SetDomain(nsIURI* aDomain) override;
  NS_IMETHOD GetCsp(nsIContentSecurityPolicy** aCsp) override;
  NS_IMETHOD SetCsp(nsIContentSecurityPolicy* aCsp) override;
  NS_IMETHOD EnsureCSP(dom::Document* aDocument,
                       nsIContentSecurityPolicy** aCSP) override;
  NS_IMETHOD GetPreloadCsp(nsIContentSecurityPolicy** aPreloadCSP) override;
  NS_IMETHOD EnsurePreloadCSP(dom::Document* aDocument,
                              nsIContentSecurityPolicy** aCSP) override;
  NS_IMETHOD GetBaseDomain(nsACString& aBaseDomain) override;
  NS_IMETHOD GetAddonId(nsAString& aAddonId) override;

  virtual nsresult GetScriptLocation(nsACString& aStr) override;

  nsresult GetSiteIdentifier(SiteIdentifier& aSite) override {
    return NS_OK;

  virtual ~SystemPrincipal(void) {}

  bool SubsumesInternal(nsIPrincipal* aOther,
                        DocumentDomainConsideration aConsideration) override {
    return true;

  bool MayLoadInternal(nsIURI* aURI) override { return true; }

}  // namespace mozilla

#endif  // mozilla_SystemPrincipal_h