summaryrefslogtreecommitdiffstats
path: root/netwerk/base/nsStreamLoader.h
blob: 100510583c188e38789c8c4d8f0e611949a27cd3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsStreamLoader_h__
#define nsStreamLoader_h__

#include "nsIThreadRetargetableStreamListener.h"
#include "nsIStreamLoader.h"
#include "nsCOMPtr.h"
#include "mozilla/Attributes.h"
#include "mozilla/Vector.h"

class nsIRequest;

namespace mozilla {
namespace net {

class nsStreamLoader final : public nsIStreamLoader,
                             public nsIThreadRetargetableStreamListener {
 public:
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_NSISTREAMLOADER
  NS_DECL_NSIREQUESTOBSERVER
  NS_DECL_NSISTREAMLISTENER
  NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER

  nsStreamLoader();

  static nsresult Create(REFNSIID aIID, void** aResult);

 protected:
  ~nsStreamLoader() = default;

  static nsresult WriteSegmentFun(nsIInputStream*, void*, const char*, uint32_t,
                                  uint32_t, uint32_t*);

  // Utility method to free mData, if present, and update other state to
  // reflect that no data has been allocated.
  void ReleaseData();

  nsCOMPtr<nsIStreamLoaderObserver> mObserver;
  nsCOMPtr<nsISupports> mContext;  // the observer's context
  nsCOMPtr<nsIRequest> mRequest;
  nsCOMPtr<nsIRequestObserver> mRequestObserver;

  mozilla::Atomic<uint32_t, mozilla::MemoryOrdering::Relaxed> mBytesRead;

  // Buffer to accumulate incoming data. We preallocate if contentSize is
  // available.
  mozilla::Vector<uint8_t, 0> mData;
};

}  // namespace net
}  // namespace mozilla

#endif  // nsStreamLoader_h__