The Tor Browser / file comparison
comparison: gfx/layers/ipc/FenceUtilsGonk.cpp
gfx/layers/ipc/FenceUtilsGonk.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:9533f1d93ff7 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * vim: sw=2 ts=8 et : | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include "GLContext.h" | |
| 9 #include "mozilla/unused.h" | |
| 10 #include "nsXULAppAPI.h" | |
| 11 | |
| 12 #include "FenceUtilsGonk.h" | |
| 13 | |
| 14 using namespace android; | |
| 15 using namespace base; | |
| 16 using namespace mozilla::layers; | |
| 17 | |
| 18 namespace IPC { | |
| 19 | |
| 20 void | |
| 21 ParamTraits<FenceHandle>::Write(Message* aMsg, | |
| 22 const paramType& aParam) | |
| 23 { | |
| 24 #if ANDROID_VERSION >= 19 | |
| 25 sp<Fence> flattenable = aParam.mFence; | |
| 26 #else | |
| 27 Flattenable *flattenable = aParam.mFence.get(); | |
| 28 #endif | |
| 29 size_t nbytes = flattenable->getFlattenedSize(); | |
| 30 size_t nfds = flattenable->getFdCount(); | |
| 31 | |
| 32 char data[nbytes]; | |
| 33 int fds[nfds]; | |
| 34 | |
| 35 #if ANDROID_VERSION >= 19 | |
| 36 // Make a copy of "data" and "fds" for flatten() to avoid casting problem | |
| 37 void *pdata = (void *)data; | |
| 38 int *pfds = fds; | |
| 39 | |
| 40 flattenable->flatten(pdata, nbytes, pfds, nfds); | |
| 41 | |
| 42 // In Kitkat, flatten() will change the value of nbytes and nfds, which dues | |
| 43 // to multiple parcelable object consumption. The actual size and fd count | |
| 44 // which returned by getFlattenedSize() and getFdCount() are not changed. | |
| 45 // So we change nbytes and nfds back by call corresponding calls. | |
| 46 nbytes = flattenable->getFlattenedSize(); | |
| 47 nfds = flattenable->getFdCount(); | |
| 48 #else | |
| 49 flattenable->flatten(data, nbytes, fds, nfds); | |
| 50 #endif | |
| 51 aMsg->WriteSize(nbytes); | |
| 52 aMsg->WriteSize(nfds); | |
| 53 | |
| 54 aMsg->WriteBytes(data, nbytes); | |
| 55 for (size_t n = 0; n < nfds; ++n) { | |
| 56 // These buffers can't die in transit because they're created | |
| 57 // synchonously and the parent-side buffer can only be dropped if | |
| 58 // there's a crash. | |
| 59 aMsg->WriteFileDescriptor(FileDescriptor(fds[n], false)); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 bool | |
| 64 ParamTraits<FenceHandle>::Read(const Message* aMsg, | |
| 65 void** aIter, paramType* aResult) | |
| 66 { | |
| 67 size_t nbytes; | |
| 68 size_t nfds; | |
| 69 const char* data; | |
| 70 | |
| 71 if (!aMsg->ReadSize(aIter, &nbytes) || | |
| 72 !aMsg->ReadSize(aIter, &nfds) || | |
| 73 !aMsg->ReadBytes(aIter, &data, nbytes)) { | |
| 74 return false; | |
| 75 } | |
| 76 | |
| 77 int fds[nfds]; | |
| 78 | |
| 79 for (size_t n = 0; n < nfds; ++n) { | |
| 80 FileDescriptor fd; | |
| 81 if (!aMsg->ReadFileDescriptor(aIter, &fd)) { | |
| 82 return false; | |
| 83 } | |
| 84 // If the GraphicBuffer was shared cross-process, SCM_RIGHTS does | |
| 85 // the right thing and dup's the fd. If it's shared cross-thread, | |
| 86 // SCM_RIGHTS doesn't dup the fd. That's surprising, but we just | |
| 87 // deal with it here. NB: only the "default" (master) process can | |
| 88 // alloc gralloc buffers. | |
| 89 bool sameProcess = (XRE_GetProcessType() == GeckoProcessType_Default); | |
| 90 int dupFd = sameProcess ? dup(fd.fd) : fd.fd; | |
| 91 fds[n] = dupFd; | |
| 92 } | |
| 93 | |
| 94 sp<Fence> buffer(new Fence()); | |
| 95 #if ANDROID_VERSION >= 19 | |
| 96 // Make a copy of "data" and "fds" for unflatten() to avoid casting problem | |
| 97 void const *pdata = (void const *)data; | |
| 98 int const *pfds = fds; | |
| 99 | |
| 100 if (NO_ERROR == buffer->unflatten(pdata, nbytes, pfds, nfds)) { | |
| 101 #else | |
| 102 Flattenable *flattenable = buffer.get(); | |
| 103 | |
| 104 if (NO_ERROR == flattenable->unflatten(data, nbytes, fds, nfds)) { | |
| 105 #endif | |
| 106 aResult->mFence = buffer; | |
| 107 return true; | |
| 108 } | |
| 109 return false; | |
| 110 } | |
| 111 | |
| 112 } // namespace IPC | |
| 113 | |
| 114 namespace mozilla { | |
| 115 namespace layers { | |
| 116 | |
| 117 FenceHandle::FenceHandle(const sp<Fence>& aFence) | |
| 118 : mFence(aFence) | |
| 119 { | |
| 120 } | |
| 121 | |
| 122 } // namespace layers | |
| 123 } // namespace mozilla |
