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Unified Diff: base/shared_memory_nacl.cc

Issue 13044024: Move shared_memory into base/memory subdirectory. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 7 years, 9 months ago
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Index: base/shared_memory_nacl.cc
diff --git a/base/shared_memory_nacl.cc b/base/shared_memory_nacl.cc
deleted file mode 100644
index 5522b8fcae0b1e4a6cafb57e76e3e732b113a412..0000000000000000000000000000000000000000
--- a/base/shared_memory_nacl.cc
+++ /dev/null
@@ -1,158 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/shared_memory.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <limits>
-
-#include "base/logging.h"
-
-namespace base {
-
-SharedMemory::SharedMemory()
- : mapped_file_(-1),
- inode_(0),
- mapped_size_(0),
- memory_(NULL),
- read_only_(false),
- requested_size_(0) {
-}
-
-SharedMemory::SharedMemory(SharedMemoryHandle handle, bool read_only)
- : mapped_file_(handle.fd),
- inode_(0),
- mapped_size_(0),
- memory_(NULL),
- read_only_(read_only),
- requested_size_(0) {
-}
-
-SharedMemory::SharedMemory(SharedMemoryHandle handle, bool read_only,
- ProcessHandle process)
- : mapped_file_(handle.fd),
- inode_(0),
- mapped_size_(0),
- memory_(NULL),
- read_only_(read_only),
- requested_size_(0) {
- NOTREACHED();
-}
-
-SharedMemory::~SharedMemory() {
- Close();
-}
-
-// static
-bool SharedMemory::IsHandleValid(const SharedMemoryHandle& handle) {
- return handle.fd >= 0;
-}
-
-// static
-SharedMemoryHandle SharedMemory::NULLHandle() {
- return SharedMemoryHandle();
-}
-
-// static
-void SharedMemory::CloseHandle(const SharedMemoryHandle& handle) {
- DCHECK_GE(handle.fd, 0);
- if (close(handle.fd) < 0)
- DPLOG(ERROR) << "close";
-}
-
-bool SharedMemory::CreateAndMapAnonymous(size_t size) {
- // Untrusted code can't create descriptors or handles.
- return false;
-}
-
-bool SharedMemory::Create(const SharedMemoryCreateOptions& options) {
- // Untrusted code can't create descriptors or handles.
- return false;
-}
-
-bool SharedMemory::Delete(const std::string& name) {
- return false;
-}
-
-bool SharedMemory::Open(const std::string& name, bool read_only) {
- return false;
-}
-
-bool SharedMemory::MapAt(off_t offset, size_t bytes) {
- if (mapped_file_ == -1)
- return false;
-
- if (bytes > static_cast<size_t>(std::numeric_limits<int>::max()))
- return false;
-
- memory_ = mmap(NULL, bytes, PROT_READ | (read_only_ ? 0 : PROT_WRITE),
- MAP_SHARED, mapped_file_, offset);
-
- bool mmap_succeeded = memory_ != MAP_FAILED && memory_ != NULL;
- if (mmap_succeeded) {
- mapped_size_ = bytes;
- DCHECK_EQ(0U, reinterpret_cast<uintptr_t>(memory_) &
- (SharedMemory::MAP_MINIMUM_ALIGNMENT - 1));
- } else {
- memory_ = NULL;
- }
-
- return mmap_succeeded;
-}
-
-bool SharedMemory::Unmap() {
- if (memory_ == NULL)
- return false;
-
- if (munmap(memory_, mapped_size_) < 0)
- DPLOG(ERROR) << "munmap";
- memory_ = NULL;
- mapped_size_ = 0;
- return true;
-}
-
-SharedMemoryHandle SharedMemory::handle() const {
- return FileDescriptor(mapped_file_, false);
-}
-
-void SharedMemory::Close() {
- Unmap();
- if (mapped_file_ > 0) {
- if (close(mapped_file_) < 0)
- DPLOG(ERROR) << "close";
- mapped_file_ = -1;
- }
-}
-
-void SharedMemory::Lock() {
- NOTIMPLEMENTED();
-}
-
-void SharedMemory::Unlock() {
- NOTIMPLEMENTED();
-}
-
-bool SharedMemory::ShareToProcessCommon(ProcessHandle process,
- SharedMemoryHandle *new_handle,
- bool close_self) {
- const int new_fd = dup(mapped_file_);
- if (new_fd < 0) {
- DPLOG(ERROR) << "dup() failed.";
- return false;
- }
-
- new_handle->fd = new_fd;
- new_handle->auto_close = true;
-
- if (close_self)
- Close();
- return true;
-}
-
-} // namespace base
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