other-licenses/7zstub/src/7zip/Compress/Copy/CopyCoder.cpp@97036ab72558 (annotated)
other-licenses/7zstub/src/7zip/Compress/Copy/CopyCoder.cpp
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 | // Compress/CopyCoder.cpp |
| michael@0 | 2 | |
| michael@0 | 3 | #include "StdAfx.h" |
| michael@0 | 4 | |
| michael@0 | 5 | #include "CopyCoder.h" |
| michael@0 | 6 | #include "../../../Common/Alloc.h" |
| michael@0 | 7 | #include "../../Common/StreamUtils.h" |
| michael@0 | 8 | |
| michael@0 | 9 | namespace NCompress { |
| michael@0 | 10 | |
| michael@0 | 11 | static const UInt32 kBufferSize = 1 << 17; |
| michael@0 | 12 | |
| michael@0 | 13 | CCopyCoder::~CCopyCoder() |
| michael@0 | 14 | { |
| michael@0 | 15 | ::MidFree(_buffer); |
| michael@0 | 16 | } |
| michael@0 | 17 | |
| michael@0 | 18 | STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream, |
| michael@0 | 19 | ISequentialOutStream *outStream, |
| michael@0 | 20 | const UInt64 *inSize, const UInt64 *outSize, |
| michael@0 | 21 | ICompressProgressInfo *progress) |
| michael@0 | 22 | { |
| michael@0 | 23 | if (_buffer == 0) |
| michael@0 | 24 | { |
| michael@0 | 25 | _buffer = (Byte *)::MidAlloc(kBufferSize); |
| michael@0 | 26 | if (_buffer == 0) |
| michael@0 | 27 | return E_OUTOFMEMORY; |
| michael@0 | 28 | } |
| michael@0 | 29 | |
| michael@0 | 30 | TotalSize = 0; |
| michael@0 | 31 | while(true) |
| michael@0 | 32 | { |
| michael@0 | 33 | UInt32 realProcessedSize; |
| michael@0 | 34 | UInt32 size = kBufferSize; |
| michael@0 | 35 | if (outSize != 0) |
| michael@0 | 36 | if (size > *outSize - TotalSize) |
| michael@0 | 37 | size = (UInt32)(*outSize - TotalSize); |
| michael@0 | 38 | RINOK(inStream->Read(_buffer, size, &realProcessedSize)); |
| michael@0 | 39 | if(realProcessedSize == 0) |
| michael@0 | 40 | break; |
| michael@0 | 41 | RINOK(WriteStream(outStream, _buffer, realProcessedSize, NULL)); |
| michael@0 | 42 | TotalSize += realProcessedSize; |
| michael@0 | 43 | if (progress != NULL) |
| michael@0 | 44 | { |
| michael@0 | 45 | RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize)); |
| michael@0 | 46 | } |
| michael@0 | 47 | } |
| michael@0 | 48 | return S_OK; |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | } |
| michael@0 | 52 |
