DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (d8847129d134)

VCS Links

Line Code
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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
/* -*- 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 GMPService_h_
#define GMPService_h_

#include "nsString.h"
#include "mozIGeckoMediaPluginService.h"
#include "nsIObserver.h"
#include "nsTArray.h"
#include "mozilla/Attributes.h"
#include "mozilla/Monitor.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
#include "nsThreadUtils.h"
#include "nsITimer.h"
#include "nsClassHashtable.h"
#include "nsDataHashtable.h"
#include "mozilla/Atomics.h"

template <class> struct already_AddRefed;

namespace mozilla {
namespace gmp {

class GMPParent;

#define GMP_DEFAULT_ASYNC_SHUTDONW_TIMEOUT 3000

class GeckoMediaPluginService MOZ_FINAL : public mozIGeckoMediaPluginService
                                        , public nsIObserver
{
public:
  static already_AddRefed<GeckoMediaPluginService> GetGeckoMediaPluginService();

  GeckoMediaPluginService();
  nsresult Init();

  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_MOZIGECKOMEDIAPLUGINSERVICE
  NS_DECL_NSIOBSERVER

  void AsyncShutdownNeeded(GMPParent* aParent);
  void AsyncShutdownComplete(GMPParent* aParent);
  void AbortAsyncShutdown();

  int32_t AsyncShutdownTimeoutMs();

private:
  ~GeckoMediaPluginService();

  nsresult GMPDispatch(nsIRunnable* event, uint32_t flags = NS_DISPATCH_NORMAL);

  void ClearStorage();

  GMPParent* SelectPluginForAPI(const nsACString& aNodeId,
                                const nsCString& aAPI,
                                const nsTArray<nsCString>& aTags);
  GMPParent* FindPluginForAPIFrom(size_t aSearchStartIndex,
                                  const nsCString& aAPI,
                                  const nsTArray<nsCString>& aTags,
                                  size_t* aOutPluginIndex);

  void UnloadPlugins();
  void CrashPlugins();
  void SetAsyncShutdownComplete();

  void LoadFromEnvironment();
  void ProcessPossiblePlugin(nsIFile* aDir);

  void AddOnGMPThread(const nsAString& aSearchDir);
  void RemoveOnGMPThread(const nsAString& aSearchDir);

  nsresult SetAsyncShutdownTimeout();

  struct DirectoryFilter {
    virtual bool operator()(nsIFile* aPath) = 0;
    ~DirectoryFilter() {}
  };
  void ClearNodeIdAndPlugin(DirectoryFilter& aFilter);

  void ForgetThisSiteOnGMPThread(const nsACString& aOrigin);
  void ClearRecentHistoryOnGMPThread(PRTime aSince);

protected:
  friend class GMPParent;
  void ReAddOnGMPThread(nsRefPtr<GMPParent>& aOld);
private:
  GMPParent* ClonePlugin(const GMPParent* aOriginal);
  nsresult EnsurePluginsOnDiskScanned();

  class PathRunnable : public nsRunnable
  {
  public:
    PathRunnable(GeckoMediaPluginService* service, const nsAString& path,
                 bool add)
      : mService(service)
      , mPath(path)
      , mAdd(add)
    { }

    NS_DECL_NSIRUNNABLE

  private:
    nsRefPtr<GeckoMediaPluginService> mService;
    nsString mPath;
    bool mAdd;
  };

  Mutex mMutex; // Protects mGMPThread and mShuttingDown and mPlugins
  nsTArray<nsRefPtr<GMPParent>> mPlugins;
  nsCOMPtr<nsIThread> mGMPThread;
  bool mShuttingDown;
  bool mShuttingDownOnGMPThread;

  // True if we've inspected MOZ_GMP_PATH on the GMP thread and loaded any
  // plugins found there into mPlugins.
  Atomic<bool> mScannedPluginOnDisk;

  template<typename T>
  class MainThreadOnly {
  public:
    MOZ_IMPLICIT MainThreadOnly(T aValue)
      : mValue(aValue)
    {}
    operator T&() {
      MOZ_ASSERT(NS_IsMainThread());
      return mValue;
    }

  private:
    T mValue;
  };

  MainThreadOnly<bool> mWaitingForPluginsAsyncShutdown;

  nsTArray<nsRefPtr<GMPParent>> mAsyncShutdownPlugins; // GMP Thread only.

#ifndef MOZ_WIDGET_GONK
  nsCOMPtr<nsIFile> mStorageBaseDir;
#endif

  // Hashes of (origin,topLevelOrigin) to the node id for
  // non-persistent sessions.
  nsClassHashtable<nsUint32HashKey, nsCString> mTempNodeIds;

  // Hashes node id to whether that node id is allowed to store data
  // persistently on disk.
  nsDataHashtable<nsCStringHashKey, bool> mPersistentStorageAllowed;
};

nsresult ReadSalt(nsIFile* aPath, nsACString& aOutData);
bool MatchOrigin(nsIFile* aPath, const nsACString& aOrigin);

} // namespace gmp
} // namespace mozilla

#endif // GMPService_h_