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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /xpcom/base/nsInterfaceRequestorAgg.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/base/nsInterfaceRequestorAgg.cpp')
-rw-r--r--xpcom/base/nsInterfaceRequestorAgg.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/xpcom/base/nsInterfaceRequestorAgg.cpp b/xpcom/base/nsInterfaceRequestorAgg.cpp
new file mode 100644
index 000000000..7e5cd83da
--- /dev/null
+++ b/xpcom/base/nsInterfaceRequestorAgg.cpp
@@ -0,0 +1,86 @@
+/* -*- 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 "nsInterfaceRequestorAgg.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsCOMPtr.h"
+#include "mozilla/Attributes.h"
+#include "nsThreadUtils.h"
+#include "nsProxyRelease.h"
+
+class nsInterfaceRequestorAgg final : public nsIInterfaceRequestor
+{
+public:
+ // XXX This needs to support threadsafe refcounting until we fix bug 243591.
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIINTERFACEREQUESTOR
+
+ nsInterfaceRequestorAgg(nsIInterfaceRequestor* aFirst,
+ nsIInterfaceRequestor* aSecond,
+ nsIEventTarget* aConsumerTarget = nullptr)
+ : mFirst(aFirst)
+ , mSecond(aSecond)
+ , mConsumerTarget(aConsumerTarget)
+ {
+ if (!mConsumerTarget) {
+ mConsumerTarget = NS_GetCurrentThread();
+ }
+ }
+
+private:
+ ~nsInterfaceRequestorAgg();
+
+ nsCOMPtr<nsIInterfaceRequestor> mFirst, mSecond;
+ nsCOMPtr<nsIEventTarget> mConsumerTarget;
+};
+
+NS_IMPL_ISUPPORTS(nsInterfaceRequestorAgg, nsIInterfaceRequestor)
+
+NS_IMETHODIMP
+nsInterfaceRequestorAgg::GetInterface(const nsIID& aIID, void** aResult)
+{
+ nsresult rv = NS_ERROR_NO_INTERFACE;
+ if (mFirst) {
+ rv = mFirst->GetInterface(aIID, aResult);
+ }
+ if (mSecond && NS_FAILED(rv)) {
+ rv = mSecond->GetInterface(aIID, aResult);
+ }
+ return rv;
+}
+
+nsInterfaceRequestorAgg::~nsInterfaceRequestorAgg()
+{
+ NS_ProxyRelease(mConsumerTarget, mFirst.forget());
+ NS_ProxyRelease(mConsumerTarget, mSecond.forget());
+}
+
+nsresult
+NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor* aFirst,
+ nsIInterfaceRequestor* aSecond,
+ nsIInterfaceRequestor** aResult)
+{
+ *aResult = new nsInterfaceRequestorAgg(aFirst, aSecond);
+ if (!*aResult) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ NS_ADDREF(*aResult);
+ return NS_OK;
+}
+
+nsresult
+NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor* aFirst,
+ nsIInterfaceRequestor* aSecond,
+ nsIEventTarget* aTarget,
+ nsIInterfaceRequestor** aResult)
+{
+ *aResult = new nsInterfaceRequestorAgg(aFirst, aSecond, aTarget);
+ if (!*aResult) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ NS_ADDREF(*aResult);
+ return NS_OK;
+}