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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ | 5 #ifndef CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ |
| 6 #define CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ | 6 #define CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| (...skipping 18 matching lines...) Expand all Loading... |
| 29 | 29 |
| 30 namespace content { | 30 namespace content { |
| 31 class ChildProcessHostDelegate; | 31 class ChildProcessHostDelegate; |
| 32 | 32 |
| 33 // Provides common functionality for hosting a child process and processing IPC | 33 // Provides common functionality for hosting a child process and processing IPC |
| 34 // messages between the host and the child process. Users are responsible | 34 // messages between the host and the child process. Users are responsible |
| 35 // for the actual launching and terminating of the child processes. | 35 // for the actual launching and terminating of the child processes. |
| 36 class CONTENT_EXPORT ChildProcessHostImpl : public ChildProcessHost, | 36 class CONTENT_EXPORT ChildProcessHostImpl : public ChildProcessHost, |
| 37 public IPC::Listener { | 37 public IPC::Listener { |
| 38 public: | 38 public: |
| 39 virtual ~ChildProcessHostImpl(); | 39 ~ChildProcessHostImpl() override; |
| 40 | 40 |
| 41 // Public and static for reuse by RenderMessageFilter. | 41 // Public and static for reuse by RenderMessageFilter. |
| 42 static void AllocateSharedMemory( | 42 static void AllocateSharedMemory( |
| 43 size_t buffer_size, base::ProcessHandle child_process, | 43 size_t buffer_size, base::ProcessHandle child_process, |
| 44 base::SharedMemoryHandle* handle); | 44 base::SharedMemoryHandle* handle); |
| 45 | 45 |
| 46 // Returns a unique ID to identify a child process. On construction, this | 46 // Returns a unique ID to identify a child process. On construction, this |
| 47 // function will be used to generate the id_, but it is also used to generate | 47 // function will be used to generate the id_, but it is also used to generate |
| 48 // IDs for the RenderProcessHost, which doesn't inherit from us, and whose IDs | 48 // IDs for the RenderProcessHost, which doesn't inherit from us, and whose IDs |
| 49 // must be unique for all child processes. | 49 // must be unique for all child processes. |
| 50 // | 50 // |
| 51 // This function is threadsafe since RenderProcessHost is on the UI thread, | 51 // This function is threadsafe since RenderProcessHost is on the UI thread, |
| 52 // but normally this will be used on the IO thread. | 52 // but normally this will be used on the IO thread. |
| 53 // | 53 // |
| 54 // This will never return ChildProcessHost::kInvalidUniqueID. | 54 // This will never return ChildProcessHost::kInvalidUniqueID. |
| 55 static int GenerateChildProcessUniqueId(); | 55 static int GenerateChildProcessUniqueId(); |
| 56 | 56 |
| 57 // ChildProcessHost implementation | 57 // ChildProcessHost implementation |
| 58 virtual bool Send(IPC::Message* message) override; | 58 bool Send(IPC::Message* message) override; |
| 59 virtual void ForceShutdown() override; | 59 void ForceShutdown() override; |
| 60 virtual std::string CreateChannel() override; | 60 std::string CreateChannel() override; |
| 61 virtual bool IsChannelOpening() override; | 61 bool IsChannelOpening() override; |
| 62 virtual void AddFilter(IPC::MessageFilter* filter) override; | 62 void AddFilter(IPC::MessageFilter* filter) override; |
| 63 #if defined(OS_POSIX) | 63 #if defined(OS_POSIX) |
| 64 virtual base::ScopedFD TakeClientFileDescriptor() override; | 64 base::ScopedFD TakeClientFileDescriptor() override; |
| 65 #endif | 65 #endif |
| 66 | 66 |
| 67 private: | 67 private: |
| 68 friend class ChildProcessHost; | 68 friend class ChildProcessHost; |
| 69 | 69 |
| 70 explicit ChildProcessHostImpl(ChildProcessHostDelegate* delegate); | 70 explicit ChildProcessHostImpl(ChildProcessHostDelegate* delegate); |
| 71 | 71 |
| 72 // IPC::Listener methods: | 72 // IPC::Listener methods: |
| 73 virtual bool OnMessageReceived(const IPC::Message& msg) override; | 73 bool OnMessageReceived(const IPC::Message& msg) override; |
| 74 virtual void OnChannelConnected(int32 peer_pid) override; | 74 void OnChannelConnected(int32 peer_pid) override; |
| 75 virtual void OnChannelError() override; | 75 void OnChannelError() override; |
| 76 virtual void OnBadMessageReceived(const IPC::Message& message) override; | 76 void OnBadMessageReceived(const IPC::Message& message) override; |
| 77 | 77 |
| 78 // Message handlers: | 78 // Message handlers: |
| 79 void OnShutdownRequest(); | 79 void OnShutdownRequest(); |
| 80 void OnAllocateSharedMemory(uint32 buffer_size, | 80 void OnAllocateSharedMemory(uint32 buffer_size, |
| 81 base::SharedMemoryHandle* handle); | 81 base::SharedMemoryHandle* handle); |
| 82 void OnAllocateGpuMemoryBuffer(uint32 width, | 82 void OnAllocateGpuMemoryBuffer(uint32 width, |
| 83 uint32 height, | 83 uint32 height, |
| 84 gfx::GpuMemoryBuffer::Format format, | 84 gfx::GpuMemoryBuffer::Format format, |
| 85 gfx::GpuMemoryBuffer::Usage usage, | 85 gfx::GpuMemoryBuffer::Usage usage, |
| 86 IPC::Message* reply); | 86 IPC::Message* reply); |
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| 100 // thread, we don't have a IPC::ChannelProxy and so we manage filters | 100 // thread, we don't have a IPC::ChannelProxy and so we manage filters |
| 101 // manually. | 101 // manually. |
| 102 std::vector<scoped_refptr<IPC::MessageFilter> > filters_; | 102 std::vector<scoped_refptr<IPC::MessageFilter> > filters_; |
| 103 | 103 |
| 104 DISALLOW_COPY_AND_ASSIGN(ChildProcessHostImpl); | 104 DISALLOW_COPY_AND_ASSIGN(ChildProcessHostImpl); |
| 105 }; | 105 }; |
| 106 | 106 |
| 107 } // namespace content | 107 } // namespace content |
| 108 | 108 |
| 109 #endif // CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ | 109 #endif // CONTENT_COMMON_CHILD_PROCESS_HOST_IMPL_H_ |
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