gecko-dev/gfx/thebes/gfxReusableSharedImageSurfaceWrapper.cpp
Nathan Froyd 01583602a9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi

--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 01:24:48 -04:00

99 lines
3.0 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gfxReusableSharedImageSurfaceWrapper.h"
#include "gfxSharedImageSurface.h"
#include "mozilla/layers/ISurfaceAllocator.h"
using mozilla::ipc::Shmem;
using mozilla::layers::ISurfaceAllocator;
gfxReusableSharedImageSurfaceWrapper::gfxReusableSharedImageSurfaceWrapper(ISurfaceAllocator* aAllocator,
gfxSharedImageSurface* aSurface)
: mAllocator(aAllocator)
, mSurface(aSurface)
{
MOZ_COUNT_CTOR(gfxReusableSharedImageSurfaceWrapper);
ReadLock();
}
gfxReusableSharedImageSurfaceWrapper::~gfxReusableSharedImageSurfaceWrapper()
{
MOZ_COUNT_DTOR(gfxReusableSharedImageSurfaceWrapper);
ReadUnlock();
}
void
gfxReusableSharedImageSurfaceWrapper::ReadLock()
{
NS_ASSERT_OWNINGTHREAD(gfxReusableSharedImageSurfaceWrapper);
mSurface->ReadLock();
}
void
gfxReusableSharedImageSurfaceWrapper::ReadUnlock()
{
int32_t readCount = mSurface->ReadUnlock();
MOZ_ASSERT(readCount >= 0, "Read count should not be negative");
if (readCount == 0) {
mAllocator->DeallocShmem(mSurface->GetShmem());
}
}
gfxReusableSurfaceWrapper*
gfxReusableSharedImageSurfaceWrapper::GetWritable(gfxImageSurface** aSurface)
{
NS_ASSERT_OWNINGTHREAD(gfxReusableSharedImageSurfaceWrapper);
int32_t readCount = mSurface->GetReadCount();
MOZ_ASSERT(readCount > 0, "A ReadLock must be held when calling GetWritable");
if (readCount == 1) {
*aSurface = mSurface;
return this;
}
// Something else is reading the surface, copy it
RefPtr<gfxSharedImageSurface> copySurface =
gfxSharedImageSurface::CreateUnsafe(mAllocator.get(), mSurface->GetSize(), mSurface->Format());
copySurface->CopyFrom(mSurface);
*aSurface = copySurface;
// We need to create a new wrapper since this wrapper has an external ReadLock
gfxReusableSurfaceWrapper* wrapper = new gfxReusableSharedImageSurfaceWrapper(mAllocator, copySurface);
// No need to release the ReadLock on the surface, this will happen when
// the wrapper is destroyed.
return wrapper;
}
const unsigned char*
gfxReusableSharedImageSurfaceWrapper::GetReadOnlyData() const
{
MOZ_ASSERT(mSurface->GetReadCount() > 0, "Should have read lock");
return mSurface->Data();
}
gfxImageFormat
gfxReusableSharedImageSurfaceWrapper::Format()
{
return mSurface->Format();
}
Shmem&
gfxReusableSharedImageSurfaceWrapper::GetShmem()
{
return mSurface->GetShmem();
}
/* static */ already_AddRefed<gfxReusableSharedImageSurfaceWrapper>
gfxReusableSharedImageSurfaceWrapper::Open(ISurfaceAllocator* aAllocator, const Shmem& aShmem)
{
RefPtr<gfxSharedImageSurface> sharedImage = gfxSharedImageSurface::Open(aShmem);
RefPtr<gfxReusableSharedImageSurfaceWrapper> wrapper = new gfxReusableSharedImageSurfaceWrapper(aAllocator, sharedImage);
wrapper->ReadUnlock();
return wrapper.forget();
}