The Tor Browser / file comparison
comparison: gfx/ipc/SharedDIB.cpp
gfx/ipc/SharedDIB.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:5fe40862eb99 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "SharedDIB.h" | |
| 7 | |
| 8 namespace mozilla { | |
| 9 namespace gfx { | |
| 10 | |
| 11 SharedDIB::SharedDIB() : | |
| 12 mShMem(nullptr) | |
| 13 { | |
| 14 } | |
| 15 | |
| 16 SharedDIB::~SharedDIB() | |
| 17 { | |
| 18 Close(); | |
| 19 } | |
| 20 | |
| 21 nsresult | |
| 22 SharedDIB::Create(uint32_t aSize) | |
| 23 { | |
| 24 Close(); | |
| 25 | |
| 26 mShMem = new base::SharedMemory(); | |
| 27 if (!mShMem || !mShMem->Create("", false, false, aSize)) | |
| 28 return NS_ERROR_OUT_OF_MEMORY; | |
| 29 | |
| 30 return NS_OK; | |
| 31 } | |
| 32 | |
| 33 bool | |
| 34 SharedDIB::IsValid() | |
| 35 { | |
| 36 if (!mShMem) | |
| 37 return false; | |
| 38 | |
| 39 return mShMem->IsHandleValid(mShMem->handle()); | |
| 40 } | |
| 41 | |
| 42 nsresult | |
| 43 SharedDIB::Close() | |
| 44 { | |
| 45 delete mShMem; | |
| 46 | |
| 47 mShMem = nullptr; | |
| 48 | |
| 49 return NS_OK; | |
| 50 } | |
| 51 | |
| 52 nsresult | |
| 53 SharedDIB::Attach(Handle aHandle, uint32_t aSize) | |
| 54 { | |
| 55 Close(); | |
| 56 | |
| 57 mShMem = new base::SharedMemory(aHandle, false); | |
| 58 if(!mShMem) | |
| 59 return NS_ERROR_OUT_OF_MEMORY; | |
| 60 | |
| 61 return NS_OK; | |
| 62 } | |
| 63 | |
| 64 nsresult | |
| 65 SharedDIB::ShareToProcess(base::ProcessHandle aChildProcess, Handle *aChildHandle) | |
| 66 { | |
| 67 if (!mShMem) | |
| 68 return NS_ERROR_UNEXPECTED; | |
| 69 | |
| 70 if (!mShMem->ShareToProcess(aChildProcess, aChildHandle)) | |
| 71 return NS_ERROR_UNEXPECTED; | |
| 72 | |
| 73 return NS_OK; | |
| 74 } | |
| 75 | |
| 76 } // gfx | |
| 77 } // mozilla |
