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Side by Side Diff: base/memory/shared_memory_win.cc

Issue 186473002: Deprecate named base::SharedMemory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: fix win Created 6 years, 9 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 "base/memory/shared_memory.h" 5 #include "base/memory/shared_memory.h"
6 6
7 #include "base/logging.h" 7 #include "base/logging.h"
8 #include "base/strings/utf_string_conversions.h" 8 #include "base/strings/utf_string_conversions.h"
9 9
10 namespace { 10 namespace {
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106 DCHECK(!mapped_file_); 106 DCHECK(!mapped_file_);
107 if (options.size == 0) 107 if (options.size == 0)
108 return false; 108 return false;
109 109
110 // Check maximum accounting for overflow. 110 // Check maximum accounting for overflow.
111 if (options.size > 111 if (options.size >
112 static_cast<size_t>(std::numeric_limits<int>::max()) - kSectionMask) 112 static_cast<size_t>(std::numeric_limits<int>::max()) - kSectionMask)
113 return false; 113 return false;
114 114
115 size_t rounded_size = (options.size + kSectionMask) & ~kSectionMask; 115 size_t rounded_size = (options.size + kSectionMask) & ~kSectionMask;
116 name_ = ASCIIToWide(options.name == NULL ? "" : *options.name); 116 name_ = ASCIIToWide(options.name_deprecated == NULL ? "" :
117 *options.name_deprecated);
117 mapped_file_ = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, 118 mapped_file_ = CreateFileMapping(INVALID_HANDLE_VALUE, NULL,
118 PAGE_READWRITE, 0, static_cast<DWORD>(rounded_size), 119 PAGE_READWRITE, 0, static_cast<DWORD>(rounded_size),
119 name_.empty() ? NULL : name_.c_str()); 120 name_.empty() ? NULL : name_.c_str());
120 if (!mapped_file_) 121 if (!mapped_file_)
121 return false; 122 return false;
122 123
123 requested_size_ = options.size; 124 requested_size_ = options.size;
124 125
125 // Check if the shared memory pre-exists. 126 // Check if the shared memory pre-exists.
126 if (GetLastError() == ERROR_ALREADY_EXISTS) { 127 if (GetLastError() == ERROR_ALREADY_EXISTS) {
127 // If the file already existed, set requested_size_ to 0 to show that 128 // If the file already existed, set requested_size_ to 0 to show that
128 // we don't know the size. 129 // we don't know the size.
129 requested_size_ = 0; 130 requested_size_ = 0;
130 if (!options.open_existing) { 131 if (!options.open_existing_deprecated) {
131 Close(); 132 Close();
132 return false; 133 return false;
133 } 134 }
134 } 135 }
135 136
136 return true; 137 return true;
137 } 138 }
138 139
139 bool SharedMemory::Delete(const std::string& name) { 140 bool SharedMemory::Delete(const std::string& name) {
140 // intentionally empty -- there is nothing for us to do on Windows. 141 // intentionally empty -- there is nothing for us to do on Windows.
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248 void SharedMemory::UnlockDeprecated() { 249 void SharedMemory::UnlockDeprecated() {
249 DCHECK(lock_ != NULL); 250 DCHECK(lock_ != NULL);
250 ReleaseMutex(lock_); 251 ReleaseMutex(lock_);
251 } 252 }
252 253
253 SharedMemoryHandle SharedMemory::handle() const { 254 SharedMemoryHandle SharedMemory::handle() const {
254 return mapped_file_; 255 return mapped_file_;
255 } 256 }
256 257
257 } // namespace base 258 } // namespace base
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