The Tor Browser: xpcom/base/nsInterfaceRequestorAgg.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsInterfaceRequestorAgg.h"

     6 #include "nsIInterfaceRequestor.h"

     7 #include "nsCOMPtr.h"

     8 #include "mozilla/Attributes.h"

     9 #include "nsThreadUtils.h"

    10 #include "nsProxyRelease.h"

    12 class nsInterfaceRequestorAgg MOZ_FINAL : public nsIInterfaceRequestor

    13 {

    14 public:

    15   // XXX This needs to support threadsafe refcounting until we fix bug 243591.

    16   NS_DECL_THREADSAFE_ISUPPORTS

    17   NS_DECL_NSIINTERFACEREQUESTOR

    19   nsInterfaceRequestorAgg(nsIInterfaceRequestor *aFirst,

    20                           nsIInterfaceRequestor *aSecond,

    21                           nsIEventTarget *aConsumerTarget = nullptr)

    22     : mFirst(aFirst)

    23     , mSecond(aSecond)

    24     , mConsumerTarget(aConsumerTarget)

    25   {

    26     if (!mConsumerTarget) {

    27       mConsumerTarget = NS_GetCurrentThread();

    28     }

    29   }

    30   ~nsInterfaceRequestorAgg();

    32 private:

    33   nsCOMPtr<nsIInterfaceRequestor> mFirst, mSecond;

    34   nsCOMPtr<nsIEventTarget> mConsumerTarget;

    35 };

    37 NS_IMPL_ISUPPORTS(nsInterfaceRequestorAgg, nsIInterfaceRequestor)

    39 NS_IMETHODIMP

    40 nsInterfaceRequestorAgg::GetInterface(const nsIID &aIID, void **aResult)

    41 {

    42   nsresult rv = NS_ERROR_NO_INTERFACE;

    43   if (mFirst)

    44     rv = mFirst->GetInterface(aIID, aResult);

    45   if (mSecond && NS_FAILED(rv))

    46     rv = mSecond->GetInterface(aIID, aResult);

    47   return rv;

    48 }

    50 nsInterfaceRequestorAgg::~nsInterfaceRequestorAgg()

    51 {

    52   nsIInterfaceRequestor* iir = nullptr;

    53   mFirst.swap(iir);

    54   if (iir) {

    55     NS_ProxyRelease(mConsumerTarget, iir);

    56   }

    57   iir = nullptr;

    58   mSecond.swap(iir);

    59   if (iir) {

    60     NS_ProxyRelease(mConsumerTarget, iir);

    61   }

    62 }

    64 nsresult

    65 NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor *aFirst,

    66                                     nsIInterfaceRequestor *aSecond,

    67                                     nsIInterfaceRequestor **aResult)

    68 {

    69   *aResult = new nsInterfaceRequestorAgg(aFirst, aSecond);

    70   if (!*aResult)

    71     return NS_ERROR_OUT_OF_MEMORY;

    72   NS_ADDREF(*aResult);

    73   return NS_OK;

    74 }

    76 nsresult

    77 NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor *aFirst,

    78                                     nsIInterfaceRequestor *aSecond,

    79                                     nsIEventTarget* aTarget,

    80                                     nsIInterfaceRequestor **aResult)

    81 {

    82   *aResult = new nsInterfaceRequestorAgg(aFirst, aSecond, aTarget);

    83   if (!*aResult)

    84     return NS_ERROR_OUT_OF_MEMORY;

    85   NS_ADDREF(*aResult);

    86   return NS_OK;

    87 }

The Tor Browser / file revision