ipc/glue/FileDescriptorUtils.cpp@6474c204b198 (annotated)
ipc/glue/FileDescriptorUtils.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #include "FileDescriptorUtils.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "nsIEventTarget.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsCOMPtr.h" |
| michael@0 | 10 | #include "nsDebug.h" |
| michael@0 | 11 | #include "nsNetCID.h" |
| michael@0 | 12 | #include "nsServiceManagerUtils.h" |
| michael@0 | 13 | #include "nsThreadUtils.h" |
| michael@0 | 14 | #include "prio.h" |
| michael@0 | 15 | #include "private/pprio.h" |
| michael@0 | 16 | |
| michael@0 | 17 | using mozilla::ipc::CloseFileRunnable; |
| michael@0 | 18 | |
| michael@0 | 19 | #ifdef DEBUG |
| michael@0 | 20 | |
| michael@0 | 21 | CloseFileRunnable::CloseFileRunnable(const FileDescriptor& aFileDescriptor) |
| michael@0 | 22 | : mFileDescriptor(aFileDescriptor) |
| michael@0 | 23 | { |
| michael@0 | 24 | MOZ_ASSERT(aFileDescriptor.IsValid()); |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | #endif // DEBUG |
| michael@0 | 28 | |
| michael@0 | 29 | CloseFileRunnable::~CloseFileRunnable() |
| michael@0 | 30 | { |
| michael@0 | 31 | if (mFileDescriptor.IsValid()) { |
| michael@0 | 32 | // It's probably safer to take the main thread IO hit here rather than leak |
| michael@0 | 33 | // the file descriptor. |
| michael@0 | 34 | CloseFile(); |
| michael@0 | 35 | } |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | NS_IMPL_ISUPPORTS(CloseFileRunnable, nsIRunnable) |
| michael@0 | 39 | |
| michael@0 | 40 | void |
| michael@0 | 41 | CloseFileRunnable::Dispatch() |
| michael@0 | 42 | { |
| michael@0 | 43 | nsCOMPtr<nsIEventTarget> eventTarget = |
| michael@0 | 44 | do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID); |
| michael@0 | 45 | NS_ENSURE_TRUE_VOID(eventTarget); |
| michael@0 | 46 | |
| michael@0 | 47 | nsresult rv = eventTarget->Dispatch(this, NS_DISPATCH_NORMAL); |
| michael@0 | 48 | NS_ENSURE_SUCCESS_VOID(rv); |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | void |
| michael@0 | 52 | CloseFileRunnable::CloseFile() |
| michael@0 | 53 | { |
| michael@0 | 54 | // It's possible for this to happen on the main thread if the dispatch to the |
| michael@0 | 55 | // stream service fails so we can't assert the thread on which we're running. |
| michael@0 | 56 | |
| michael@0 | 57 | MOZ_ASSERT(mFileDescriptor.IsValid()); |
| michael@0 | 58 | |
| michael@0 | 59 | PRFileDesc* fd = |
| michael@0 | 60 | PR_ImportFile(PROsfd(mFileDescriptor.PlatformHandle())); |
| michael@0 | 61 | NS_WARN_IF_FALSE(fd, "Failed to import file handle!"); |
| michael@0 | 62 | |
| michael@0 | 63 | mFileDescriptor = FileDescriptor(); |
| michael@0 | 64 | |
| michael@0 | 65 | if (fd) { |
| michael@0 | 66 | PR_Close(fd); |
| michael@0 | 67 | fd = nullptr; |
| michael@0 | 68 | } |
| michael@0 | 69 | } |
| michael@0 | 70 | |
| michael@0 | 71 | NS_IMETHODIMP |
| michael@0 | 72 | CloseFileRunnable::Run() |
| michael@0 | 73 | { |
| michael@0 | 74 | MOZ_ASSERT(!NS_IsMainThread()); |
| michael@0 | 75 | |
| michael@0 | 76 | CloseFile(); |
| michael@0 | 77 | return NS_OK; |
| michael@0 | 78 | } |
