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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "chrome/common/transport_dib.h" |
| 6 |
| 7 #include <unistd.h> |
| 8 #include <sys/stat.h> |
| 9 #include "base/shared_memory.h" |
| 10 |
| 11 TransportDIB::TransportDIB() |
| 12 : size_(0) { |
| 13 } |
| 14 |
| 15 TransportDIB::TransportDIB(TransportDIB::Handle dib) |
| 16 : shared_memory_(dib, false /* read write */), |
| 17 size_(0) { |
| 18 } |
| 19 |
| 20 TransportDIB::~TransportDIB() { |
| 21 } |
| 22 |
| 23 // static |
| 24 TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { |
| 25 TransportDIB* dib = new TransportDIB; |
| 26 if (!dib->shared_memory_.Create(L"", false /* read write */, |
| 27 false /* do not open existing */, size)) { |
| 28 delete dib; |
| 29 return NULL; |
| 30 } |
| 31 |
| 32 dib->size_ = size; |
| 33 return dib; |
| 34 } |
| 35 |
| 36 // static |
| 37 TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) { |
| 38 TransportDIB* dib = new TransportDIB(handle); |
| 39 struct stat st; |
| 40 fstat(handle.fd, &st); |
| 41 |
| 42 if (!dib->shared_memory_.Map(st.st_size)) { |
| 43 delete dib; |
| 44 close(handle.fd); |
| 45 return false; |
| 46 } |
| 47 |
| 48 dib->size_ = st.st_size; |
| 49 |
| 50 return dib; |
| 51 } |
| 52 |
| 53 void* TransportDIB::memory() const { |
| 54 return shared_memory_.memory(); |
| 55 } |
| 56 |
| 57 TransportDIB::Id TransportDIB::id() const { |
| 58 return false; |
| 59 } |
| 60 |
| 61 TransportDIB::Handle TransportDIB::handle() const { |
| 62 return shared_memory_.handle(); |
| 63 } |
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