1 files changed, 92 insertions, 0 deletions
diff --git a/netwerk/protocol/http/PendingTransactionQueue.h b/netwerk/protocol/http/PendingTransactionQueue.h
new file mode 100644
index 0000000000..0b0d51e2cd
--- /dev/null
+++ b/netwerk/protocol/http/PendingTransactionQueue.h
@@ -0,0 +1,92 @@
+/* vim:t ts=4 sw=2 sts=2 et cin: */
+/* 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/. */
+
+#ifndef PendingTransactionQueue_h__
+#define PendingTransactionQueue_h__
+
+#include "nsClassHashtable.h"
+#include "nsHttpTransaction.h"
+#include "PendingTransactionInfo.h"
+
+namespace mozilla {
+namespace net {
+
+class PendingTransactionQueue {
+ public:
+  PendingTransactionQueue() = default;
+
+  void ReschedTransaction(nsHttpTransaction* aTrans);
+
+  nsTArray<RefPtr<PendingTransactionInfo>>* GetTransactionPendingQHelper(
+      nsAHttpTransaction* trans);
+
+  void InsertTransactionSorted(
+      nsTArray<RefPtr<PendingTransactionInfo>>& pendingQ,
+      PendingTransactionInfo* pendingTransInfo,
+      bool aInsertAsFirstForTheSamePriority = false);
+
+  // Add a transaction information into the pending queue in
+  // |mPendingTransactionTable| according to the transaction's
+  // top level outer content window id.
+  void InsertTransaction(PendingTransactionInfo* pendingTransInfo,
+                         bool aInsertAsFirstForTheSamePriority = false);
+
+  void AppendPendingUrgentStartQ(
+      nsTArray<RefPtr<PendingTransactionInfo>>& result);
+
+  // Append transactions to the |result| whose window id
+  // is equal to |windowId|.
+  // NOTE: maxCount == 0 will get all transactions in the queue.
+  void AppendPendingQForFocusedWindow(
+      uint64_t windowId, nsTArray<RefPtr<PendingTransactionInfo>>& result,
+      uint32_t maxCount = 0);
+
+  // Append transactions whose window id isn't equal to |windowId|.
+  // NOTE: windowId == 0 will get all transactions for both
+  // focused and non-focused windows.
+  void AppendPendingQForNonFocusedWindows(
+      uint64_t windowId, nsTArray<RefPtr<PendingTransactionInfo>>& result,
+      uint32_t maxCount = 0);
+
+  // Return the count of pending transactions for all window ids.
+  size_t PendingQueueLength() const;
+  size_t PendingQueueLengthForWindow(uint64_t windowId) const;
+
+  // Remove the empty pendingQ in |mPendingTransactionTable|.
+  void RemoveEmptyPendingQ();
+
+  void PrintDiagnostics(nsCString& log);
+
+  size_t UrgentStartQueueLength();
+
+  void PrintPendingQ();
+
+  void Compact();
+
+  void CancelAllTransactions(nsresult reason);
+
+  ~PendingTransactionQueue() = default;
+
+ private:
+  void InsertTransactionNormal(PendingTransactionInfo* info,
+                               bool aInsertAsFirstForTheSamePriority = false);
+
+  nsTArray<RefPtr<PendingTransactionInfo>>
+      mUrgentStartQ;  // the urgent start transaction queue
+
+  // This table provides a mapping from top level outer content window id
+  // to a queue of pending transaction information.
+  // The transaction's order in pending queue is decided by whether it's a
+  // blocking transaction and its priority.
+  // Note that the window id could be 0 if the http request
+  // is initialized without a window.
+  nsClassHashtable<nsUint64HashKey, nsTArray<RefPtr<PendingTransactionInfo>>>
+      mPendingTransactionTable;
+};
+
+}  // namespace net
+}  // namespace mozilla
+
+#endif  // !PendingTransactionQueue_h__