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Side by Side Diff: mojo/edk/embedder/simple_platform_shared_buffer_posix.cc

Issue 1350023003: Add a Mojo EDK for Chrome that uses one OS pipe per message pipe. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: more cleanup Created 5 years, 2 months ago
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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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