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| 1 // Copyright (c) 2006-2008 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 <string.h> | 5 #include <string.h> | 
| 6 #include "sandbox/win/src/sharedmem_ipc_client.h" | 6 #include "sandbox/win/src/sharedmem_ipc_client.h" | 
| 7 #include "sandbox/win/src/sandbox.h" | 7 #include "sandbox/win/src/sandbox.h" | 
| 8 #include "sandbox/win/src/crosscall_client.h" | 8 #include "sandbox/win/src/crosscall_client.h" | 
| 9 #include "sandbox/win/src/crosscall_params.h" | 9 #include "sandbox/win/src/crosscall_params.h" | 
| 10 #include "base/logging.h" | 10 #include "base/logging.h" | 
| 11 | 11 | 
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| 143 | 143 | 
| 144 // Find out which channel we are from the pointer returned by GetBuffer. | 144 // Find out which channel we are from the pointer returned by GetBuffer. | 
| 145 size_t SharedMemIPCClient::ChannelIndexFromBuffer(const void* buffer) { | 145 size_t SharedMemIPCClient::ChannelIndexFromBuffer(const void* buffer) { | 
| 146   ptrdiff_t d = reinterpret_cast<const char*>(buffer) - first_base_; | 146   ptrdiff_t d = reinterpret_cast<const char*>(buffer) - first_base_; | 
| 147   size_t num = d/kIPCChannelSize; | 147   size_t num = d/kIPCChannelSize; | 
| 148   DCHECK(num < control_->channels_count); | 148   DCHECK(num < control_->channels_count); | 
| 149   return (num); | 149   return (num); | 
| 150 } | 150 } | 
| 151 | 151 | 
| 152 }  // namespace sandbox | 152 }  // namespace sandbox | 
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