third_party/wayland-proxy/wayland-proxy.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef _wayland_proxy_h_
   7 #define _wayland_proxy_h_
   8
   9 #include <poll.h>
  10 #include <vector>
  11 #include <fcntl.h>
  12 #include <atomic>
  13 #include <memory>
  14
  15 class ProxiedConnection;
  16
  17 class WaylandProxy {
  18  public:
  19   static std::unique_ptr<WaylandProxy> Create();
  20
  21   // Launch an application with Wayland proxy set
  22   bool RunChildApplication(char* argv[]);
  23
  24   // Run proxy as part of already running application
  25   // and set Wayland proxy display for it.
  26   bool RunThread();
  27
  28   // Set original Wayland display env variable and clear
  29   // proxy display file.
  30   void RestoreWaylandDisplay();
  31
  32   static void SetVerbose(bool aVerbose);
  33
  34   ~WaylandProxy();
  35
  36  private:
  37   bool Init();
  38   void Run();
  39
  40   void SetWaylandProxyDisplay();
  41   static void* RunProxyThread(WaylandProxy* aProxy);
  42   bool CheckWaylandDisplay(const char* aWaylandDisplay);
  43
  44   bool SetupWaylandDisplays();
  45   bool StartProxyServer();
  46   bool IsChildAppTerminated();
  47
  48   bool PollConnections();
  49   bool ProcessConnections();
  50
  51   void Info(const char* aFormat, ...);
  52   void Warning(const char* aOperation);
  53   void Error(const char* aOperation);
  54   void ErrorPlain(const char* aFormat, ...);
  55
  56  private:
  57   // List of all Compositor <-> Application connections
  58   std::vector<std::unique_ptr<ProxiedConnection>> mConnections;
  59   int mProxyServerSocket = -1;
  60   pid_t mApplicationPID = 0;
  61   std::atomic<bool> mThreadRunning = false;
  62   pthread_t mThread;
  63
  64   // sockaddr_un has hardcoded max len of sun_path
  65   static constexpr int sMaxDisplayNameLen = 108;
  66   // Name of Wayland display provided by compositor
  67   char mWaylandDisplay[sMaxDisplayNameLen];
  68   // Name of Wayland display provided by us
  69   char mWaylandProxy[sMaxDisplayNameLen];
  70 };
  71
  72 #endif  // _wayland_proxy_h_