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Issue 2854833004: Use SharedMemoryHandle instead ScopedHandle as ivar for SharedMemory (Closed)
Patch Set: close should be idempotent. Created 3 years, 7 months ago
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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 "base/memory/shared_memory.h" 5 #include "base/memory/shared_memory.h"
6 6
7 #include <errno.h> 7 #include <errno.h>
8 #include <fcntl.h> 8 #include <fcntl.h>
9 #include <stddef.h> 9 #include <stddef.h>
10 #include <sys/mman.h> 10 #include <sys/mman.h>
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30 #include "third_party/ashmem/ashmem.h" 30 #include "third_party/ashmem/ashmem.h"
31 #endif 31 #endif
32 32
33 namespace base { 33 namespace base {
34 34
35 SharedMemory::SharedMemory() 35 SharedMemory::SharedMemory()
36 : mapped_size_(0), memory_(NULL), read_only_(false), requested_size_(0) {} 36 : mapped_size_(0), memory_(NULL), read_only_(false), requested_size_(0) {}
37 37
38 SharedMemory::SharedMemory(const SharedMemoryHandle& handle, bool read_only) 38 SharedMemory::SharedMemory(const SharedMemoryHandle& handle, bool read_only)
39 : shm_(handle), 39 : shm_(handle),
40
41 mapped_size_(0), 40 mapped_size_(0),
42 memory_(NULL), 41 memory_(NULL),
43 read_only_(read_only), 42 read_only_(read_only),
44 requested_size_(0) {} 43 requested_size_(0) {}
45 44
46 SharedMemory::~SharedMemory() { 45 SharedMemory::~SharedMemory() {
47 Unmap(); 46 Unmap();
48 Close(); 47 Close();
49 } 48 }
50 49
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373 struct stat file_stat; 372 struct stat file_stat;
374 if (HANDLE_EINTR( 373 if (HANDLE_EINTR(
375 ::fstat(static_cast<int>(handle().GetHandle()), &file_stat)) != 0) 374 ::fstat(static_cast<int>(handle().GetHandle()), &file_stat)) != 0)
376 return false; 375 return false;
377 id->first = file_stat.st_dev; 376 id->first = file_stat.st_dev;
378 id->second = file_stat.st_ino; 377 id->second = file_stat.st_ino;
379 return true; 378 return true;
380 } 379 }
381 380
382 } // namespace base 381 } // namespace base
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