Jakub Pawlowski | 86aa225 | 2017-04-05 09:22:29 -0700 | [diff] [blame] | 1 | // Copyright 2018 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "mojo/core/scoped_process_handle.h" |
| 6 | |
| 7 | #include "build/build_config.h" |
| 8 | |
| 9 | #if defined(OS_WIN) |
| 10 | #include <windows.h> |
| 11 | #endif |
| 12 | |
| 13 | namespace mojo { |
| 14 | namespace core { |
| 15 | |
| 16 | namespace { |
| 17 | |
| 18 | base::ProcessHandle GetCurrentProcessHandle() { |
| 19 | #if defined(OS_NACL_NONSFI) |
| 20 | // Doesn't really matter, it's not going to be used for anything interesting |
| 21 | // under NaCl. |
| 22 | return 1; |
| 23 | #else |
| 24 | return base::GetCurrentProcessHandle(); |
| 25 | #endif |
| 26 | } |
| 27 | |
| 28 | } // namespace |
| 29 | |
| 30 | ScopedProcessHandle::ScopedProcessHandle() = default; |
| 31 | |
| 32 | ScopedProcessHandle::ScopedProcessHandle(base::ProcessHandle handle) |
| 33 | : handle_(handle) { |
| 34 | DCHECK_NE(handle, GetCurrentProcessHandle()); |
| 35 | } |
| 36 | |
| 37 | ScopedProcessHandle::ScopedProcessHandle(ScopedProcessHandle&&) = default; |
| 38 | |
| 39 | ScopedProcessHandle::~ScopedProcessHandle() = default; |
| 40 | |
| 41 | // static |
| 42 | ScopedProcessHandle ScopedProcessHandle::CloneFrom(base::ProcessHandle handle) { |
| 43 | DCHECK_NE(handle, GetCurrentProcessHandle()); |
| 44 | if (handle == base::kNullProcessHandle) |
| 45 | return ScopedProcessHandle(); |
| 46 | |
| 47 | #if defined(OS_WIN) |
| 48 | BOOL ok = ::DuplicateHandle(GetCurrentProcessHandle(), handle, |
| 49 | GetCurrentProcessHandle(), &handle, 0, FALSE, |
| 50 | DUPLICATE_SAME_ACCESS); |
| 51 | DCHECK(ok); |
| 52 | #endif |
| 53 | return ScopedProcessHandle(handle); |
| 54 | } |
| 55 | |
| 56 | ScopedProcessHandle& ScopedProcessHandle::operator=(ScopedProcessHandle&&) = |
| 57 | default; |
| 58 | |
| 59 | bool ScopedProcessHandle::is_valid() const { |
| 60 | #if defined(OS_WIN) |
| 61 | return handle_.IsValid(); |
| 62 | #else |
| 63 | return handle_ != base::kNullProcessHandle; |
| 64 | #endif |
| 65 | } |
| 66 | |
| 67 | base::ProcessHandle ScopedProcessHandle::get() const { |
| 68 | #if defined(OS_WIN) |
| 69 | return handle_.Get(); |
| 70 | #else |
| 71 | return handle_; |
| 72 | #endif |
| 73 | } |
| 74 | |
| 75 | base::ProcessHandle ScopedProcessHandle::release() { |
| 76 | #if defined(OS_WIN) |
| 77 | return handle_.Take(); |
| 78 | #else |
| 79 | return handle_; |
| 80 | #endif |
| 81 | } |
| 82 | |
| 83 | ScopedProcessHandle ScopedProcessHandle::Clone() const { |
| 84 | if (is_valid()) |
| 85 | return CloneFrom(get()); |
| 86 | return ScopedProcessHandle(); |
| 87 | } |
| 88 | |
| 89 | } // namespace core |
| 90 | } // namespace mojo |