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Issue 1499423004: Remove kint32max. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@kint9
Patch Set: rebase Created 5 years ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 1 // Copyright 2013 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/files/memory_mapped_file.h" 5 #include "base/files/memory_mapped_file.h"
6 6
7 #include "base/files/file_path.h" 7 #include "base/files/file_path.h"
8 #include "base/logging.h" 8 #include "base/logging.h"
9 #include "base/sys_info.h" 9 #include "base/sys_info.h"
10 10
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67 } 67 }
68 68
69 return true; 69 return true;
70 } 70 }
71 71
72 bool MemoryMappedFile::IsValid() const { 72 bool MemoryMappedFile::IsValid() const {
73 return data_ != NULL; 73 return data_ != NULL;
74 } 74 }
75 75
76 // static 76 // static
77 void MemoryMappedFile::CalculateVMAlignedBoundaries(int64 start, 77 void MemoryMappedFile::CalculateVMAlignedBoundaries(int64_t start,
78 int64 size, 78 int64_t size,
79 int64* aligned_start, 79 int64_t* aligned_start,
80 int64* aligned_size, 80 int64_t* aligned_size,
81 int32* offset) { 81 int32_t* offset) {
82 // Sadly, on Windows, the mmap alignment is not just equal to the page size. 82 // Sadly, on Windows, the mmap alignment is not just equal to the page size.
83 const int64 mask = static_cast<int64>(SysInfo::VMAllocationGranularity()) - 1; 83 const int64_t mask =
84 DCHECK_LT(mask, std::numeric_limits<int32>::max()); 84 static_cast<int64_t>(SysInfo::VMAllocationGranularity()) - 1;
85 DCHECK_LT(mask, std::numeric_limits<int32_t>::max());
85 *offset = start & mask; 86 *offset = start & mask;
86 *aligned_start = start & ~mask; 87 *aligned_start = start & ~mask;
87 *aligned_size = (size + *offset + mask) & ~mask; 88 *aligned_size = (size + *offset + mask) & ~mask;
88 } 89 }
89 #endif 90 #endif
90 91
91 } // namespace base 92 } // namespace base
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