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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 "third_party/mojo/src/mojo/edk/embedder/simple_platform_shared_buffer.h
" | 5 #include "mojo/edk/embedder/simple_platform_shared_buffer.h" |
6 | 6 |
7 #include <stdint.h> | 7 #include <stdint.h> |
8 #include <stdio.h> // For |fileno()|. | 8 #include <stdio.h> // For |fileno()|. |
9 #include <sys/mman.h> // For |mmap()|/|munmap()|. | 9 #include <sys/mman.h> // For |mmap()|/|munmap()|. |
10 #include <sys/stat.h> | 10 #include <sys/stat.h> |
11 #include <sys/types.h> // For |off_t|. | 11 #include <sys/types.h> // For |off_t|. |
12 #include <unistd.h> | 12 #include <unistd.h> |
13 | 13 |
14 #include <limits> | 14 #include <limits> |
15 | 15 |
16 #include "base/files/file_path.h" | 16 #include "base/files/file_path.h" |
17 #include "base/files/file_util.h" | 17 #include "base/files/file_util.h" |
18 #include "base/files/scoped_file.h" | 18 #include "base/files/scoped_file.h" |
19 #include "base/logging.h" | 19 #include "base/logging.h" |
20 #include "base/posix/eintr_wrapper.h" | 20 #include "base/posix/eintr_wrapper.h" |
21 #include "base/sys_info.h" | 21 #include "base/sys_info.h" |
22 #include "base/threading/thread_restrictions.h" | 22 #include "base/threading/thread_restrictions.h" |
23 #include "third_party/mojo/src/mojo/edk/embedder/platform_handle.h" | 23 #include "mojo/edk/embedder/platform_handle.h" |
24 | 24 |
25 // We assume that |size_t| and |off_t| (type for |ftruncate()|) fits in a | 25 // We assume that |size_t| and |off_t| (type for |ftruncate()|) fits in a |
26 // |uint64_t|. | 26 // |uint64_t|. |
27 static_assert(sizeof(size_t) <= sizeof(uint64_t), "size_t too big"); | 27 static_assert(sizeof(size_t) <= sizeof(uint64_t), "size_t too big"); |
28 static_assert(sizeof(off_t) <= sizeof(uint64_t), "off_t too big"); | 28 static_assert(sizeof(off_t) <= sizeof(uint64_t), "off_t too big"); |
29 | 29 |
30 namespace mojo { | 30 namespace mojo { |
31 namespace embedder { | 31 namespace edk { |
32 | 32 |
33 // SimplePlatformSharedBuffer -------------------------------------------------- | 33 // SimplePlatformSharedBuffer -------------------------------------------------- |
34 | 34 |
35 // The implementation for android uses ashmem to generate the file descriptor | 35 // The implementation for android uses ashmem to generate the file descriptor |
36 // for the shared memory. See simple_platform_shared_buffer_android.cc | 36 // for the shared memory. See simple_platform_shared_buffer_android.cc |
37 #if !defined(OS_ANDROID) | 37 #if !defined(OS_ANDROID) |
38 | 38 |
39 bool SimplePlatformSharedBuffer::Init() { | 39 bool SimplePlatformSharedBuffer::Init() { |
40 DCHECK(!handle_.is_valid()); | 40 DCHECK(!handle_.is_valid()); |
41 | 41 |
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147 base, length, real_base, real_length)); | 147 base, length, real_base, real_length)); |
148 } | 148 } |
149 | 149 |
150 // SimplePlatformSharedBufferMapping ------------------------------------------- | 150 // SimplePlatformSharedBufferMapping ------------------------------------------- |
151 | 151 |
152 void SimplePlatformSharedBufferMapping::Unmap() { | 152 void SimplePlatformSharedBufferMapping::Unmap() { |
153 int result = munmap(real_base_, real_length_); | 153 int result = munmap(real_base_, real_length_); |
154 PLOG_IF(ERROR, result != 0) << "munmap"; | 154 PLOG_IF(ERROR, result != 0) << "munmap"; |
155 } | 155 } |
156 | 156 |
157 } // namespace embedder | 157 } // namespace edk |
158 } // namespace mojo | 158 } // namespace mojo |
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