/* 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.
inline size_t PendingQueueLength()
const {
MOZ_ASSERT(mPendingQueueLength == ComputePendingQueueLength());
return mPendingQueueLength;
}
size_t PendingQueueLengthForWindow(uint64_t windowId)
const;
inline bool PendingQueueIsEmpty()
const {
MOZ_ASSERT(mPendingQueueLength == ComputePendingQueueLength());
return mPendingQueueLength ==
0;
}
// Remove the empty pendingQ in |mPendingTransactionTable|.
void RemoveEmptyPendingQ();
// Notify that a transaction was removed directly from a per-window array
// returned by GetTransactionPendingQHelper (not from mUrgentStartQ).
void OnPendingTransactionRemovedFromTable();
void PrintDiagnostics(nsCString& log);
inline size_t UrgentStartQueueLength()
const {
return mUrgentStartQ.Length();
}
// Return true if the urgent start queue is empty (optimized version of
// UrgentStartQueueLength() == 0).
inline bool UrgentStartQueueIsEmpty()
const {
return mUrgentStartQ.IsEmpty();
}
void PrintPendingQ();
void Compact();
void CancelAllTransactions(nsresult reason);
~PendingTransactionQueue() =
default;
private:
#ifdef DEBUG
size_t ComputePendingQueueLength()
const;
#endif
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;
// Running count of transactions across all per-window arrays in
// mPendingTransactionTable (excludes mUrgentStartQ).
size_t mPendingQueueLength{
0};
};
}
// namespace net
}
// namespace mozilla
#endif // !PendingTransactionQueue_h_