media/mtransport/databuffer.h@97036ab72558 (annotated)
media/mtransport/databuffer.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 5 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | // Original author: ekr@rtfm.com |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef databuffer_h__ |
| michael@0 | 10 | #define databuffer_h__ |
| michael@0 | 11 | #include <algorithm> |
| michael@0 | 12 | #include <mozilla/Scoped.h> |
| michael@0 | 13 | #include <m_cpp_utils.h> |
| michael@0 | 14 | #include <nsISupportsImpl.h> |
| michael@0 | 15 | |
| michael@0 | 16 | namespace mozilla { |
| michael@0 | 17 | |
| michael@0 | 18 | class DataBuffer { |
| michael@0 | 19 | public: |
| michael@0 | 20 | DataBuffer() : data_(nullptr), len_(0) {} |
| michael@0 | 21 | DataBuffer(const uint8_t *data, size_t len) { |
| michael@0 | 22 | Assign(data, len); |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | void Assign(const uint8_t *data, size_t len) { |
| michael@0 | 26 | data_ = new unsigned char[ len ? len : 1]; // Don't depend on new [0]. |
| michael@0 | 27 | memcpy(static_cast<void *>(data_.get()), |
| michael@0 | 28 | static_cast<const void *>(data), len); |
| michael@0 | 29 | len_ = len; |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | const uint8_t *data() const { return data_; } |
| michael@0 | 33 | size_t len() const { return len_; } |
| michael@0 | 34 | const bool empty() const { return len_ != 0; } |
| michael@0 | 35 | |
| michael@0 | 36 | NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DataBuffer) |
| michael@0 | 37 | |
| michael@0 | 38 | private: |
| michael@0 | 39 | ScopedDeleteArray<uint8_t> data_; |
| michael@0 | 40 | size_t len_; |
| michael@0 | 41 | |
| michael@0 | 42 | DISALLOW_COPY_ASSIGN(DataBuffer); |
| michael@0 | 43 | }; |
| michael@0 | 44 | |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | #endif |
