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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 #include "content/renderer/pepper/host_array_buffer_var.h" | 5 #include "content/renderer/pepper/host_array_buffer_var.h" |
6 | 6 |
7 #include <stdio.h> | 7 #include <stdio.h> |
8 #include <string.h> | 8 #include <string.h> |
9 | 9 |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "base/memory/shared_memory.h" | 12 #include "base/memory/shared_memory.h" |
13 #include "base/process/process_handle.h" | 13 #include "base/process/process_handle.h" |
14 #include "content/common/sandbox_util.h" | 14 #include "content/common/sandbox_util.h" |
15 #include "content/renderer/pepper/host_globals.h" | 15 #include "content/renderer/pepper/host_globals.h" |
16 #include "content/renderer/pepper/plugin_module.h" | 16 #include "content/renderer/pepper/plugin_module.h" |
17 #include "content/renderer/render_thread_impl.h" | 17 #include "content/renderer/render_thread_impl.h" |
18 #include "ppapi/c/pp_instance.h" | 18 #include "ppapi/c/pp_instance.h" |
19 | 19 |
20 using ppapi::ArrayBufferVar; | 20 using ppapi::ArrayBufferVar; |
21 using blink::WebArrayBuffer; | 21 using blink::WebArrayBuffer; |
22 | 22 |
23 namespace content { | 23 namespace content { |
24 | 24 |
25 HostArrayBufferVar::HostArrayBufferVar(uint32 size_in_bytes) | 25 HostArrayBufferVar::HostArrayBufferVar(uint32 size_in_bytes) |
26 : buffer_(WebArrayBuffer::create(size_in_bytes, 1 /* element_size */)), | 26 : buffer_(WebArrayBuffer::create(size_in_bytes, 1 /* element_size */)), |
27 valid_(true) { | 27 valid_(true) {} |
28 } | |
29 | 28 |
30 HostArrayBufferVar::HostArrayBufferVar(const WebArrayBuffer& buffer) | 29 HostArrayBufferVar::HostArrayBufferVar(const WebArrayBuffer& buffer) |
31 : buffer_(buffer), | 30 : buffer_(buffer), valid_(true) {} |
32 valid_(true) { | |
33 } | |
34 | 31 |
35 HostArrayBufferVar::HostArrayBufferVar(uint32 size_in_bytes, | 32 HostArrayBufferVar::HostArrayBufferVar(uint32 size_in_bytes, |
36 base::SharedMemoryHandle handle) | 33 base::SharedMemoryHandle handle) |
37 : buffer_(WebArrayBuffer::create(size_in_bytes, 1 /* element_size */)) { | 34 : buffer_(WebArrayBuffer::create(size_in_bytes, 1 /* element_size */)) { |
38 base::SharedMemory s(handle, true); | 35 base::SharedMemory s(handle, true); |
39 valid_ = s.Map(size_in_bytes); | 36 valid_ = s.Map(size_in_bytes); |
40 if (valid_) { | 37 if (valid_) { |
41 memcpy(buffer_.data(), s.memory(), size_in_bytes); | 38 memcpy(buffer_.data(), s.memory(), size_in_bytes); |
42 s.Unmap(); | 39 s.Unmap(); |
43 } | 40 } |
44 } | 41 } |
45 | 42 |
46 HostArrayBufferVar::~HostArrayBufferVar() { | 43 HostArrayBufferVar::~HostArrayBufferVar() {} |
47 } | |
48 | 44 |
49 void* HostArrayBufferVar::Map() { | 45 void* HostArrayBufferVar::Map() { |
50 if (!valid_) | 46 if (!valid_) |
51 return NULL; | 47 return NULL; |
52 return buffer_.data(); | 48 return buffer_.data(); |
53 } | 49 } |
54 | 50 |
55 void HostArrayBufferVar::Unmap() { | 51 void HostArrayBufferVar::Unmap() { |
56 // We do not used shared memory on the host side. Nothing to do. | 52 // We do not used shared memory on the host side. Nothing to do. |
57 } | 53 } |
58 | 54 |
59 uint32 HostArrayBufferVar::ByteLength() { | 55 uint32 HostArrayBufferVar::ByteLength() { return buffer_.byteLength(); } |
60 return buffer_.byteLength(); | |
61 } | |
62 | 56 |
63 bool HostArrayBufferVar::CopyToNewShmem( | 57 bool HostArrayBufferVar::CopyToNewShmem( |
64 PP_Instance instance, | 58 PP_Instance instance, |
65 int* host_shm_handle_id, | 59 int* host_shm_handle_id, |
66 base::SharedMemoryHandle* plugin_shm_handle) { | 60 base::SharedMemoryHandle* plugin_shm_handle) { |
67 scoped_ptr<base::SharedMemory> shm( | 61 scoped_ptr<base::SharedMemory> shm( |
68 RenderThread::Get()->HostAllocateSharedMemoryBuffer(ByteLength()). | 62 RenderThread::Get() |
69 release()); | 63 ->HostAllocateSharedMemoryBuffer(ByteLength()) |
64 .release()); | |
bbudge
2014/04/07 17:02:17
I wonder why this didn't go on the previous line?
| |
70 if (!shm) | 65 if (!shm) |
71 return false; | 66 return false; |
72 | 67 |
73 shm->Map(ByteLength()); | 68 shm->Map(ByteLength()); |
74 memcpy(shm->memory(), Map(), ByteLength()); | 69 memcpy(shm->memory(), Map(), ByteLength()); |
75 shm->Unmap(); | 70 shm->Unmap(); |
76 | 71 |
77 // Duplicate the handle here; the SharedMemory destructor closes | 72 // Duplicate the handle here; the SharedMemory destructor closes |
78 // its handle on us. | 73 // its handle on us. |
79 HostGlobals* hg = HostGlobals::Get(); | 74 HostGlobals* hg = HostGlobals::Get(); |
80 PluginModule* pm = hg->GetModule(hg->GetModuleForInstance(instance)); | 75 PluginModule* pm = hg->GetModule(hg->GetModuleForInstance(instance)); |
81 base::ProcessId p = pm->GetPeerProcessId(); | 76 base::ProcessId p = pm->GetPeerProcessId(); |
82 if (p == base::kNullProcessId) { | 77 if (p == base::kNullProcessId) { |
83 // In-process, clone for ourselves. | 78 // In-process, clone for ourselves. |
84 p = base::GetCurrentProcId(); | 79 p = base::GetCurrentProcId(); |
85 } | 80 } |
86 | 81 |
87 base::PlatformFile platform_file = | 82 base::PlatformFile platform_file = |
88 #if defined(OS_WIN) | 83 #if defined(OS_WIN) |
89 shm->handle(); | 84 shm->handle(); |
90 #elif defined(OS_POSIX) | 85 #elif defined(OS_POSIX) |
91 shm->handle().fd; | 86 shm->handle().fd; |
92 #else | 87 #else |
93 #error Not implemented. | 88 #error Not implemented. |
94 #endif | 89 #endif |
95 | 90 |
96 *plugin_shm_handle = BrokerGetFileHandleForProcess(platform_file, p, false); | 91 *plugin_shm_handle = BrokerGetFileHandleForProcess(platform_file, p, false); |
97 *host_shm_handle_id = -1; | 92 *host_shm_handle_id = -1; |
98 return true; | 93 return true; |
99 } | 94 } |
100 | 95 |
101 } // namespace content | 96 } // namespace content |
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