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