gecko/image/DecodePool.h
Nathan Froyd 9c5965b035 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
2015-10-18 01:24:48 -04:00

107 lines
3.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/**
* DecodePool manages the threads used for decoding raster images.
*/
#ifndef mozilla_image_DecodePool_h
#define mozilla_image_DecodePool_h
#include "mozilla/Mutex.h"
#include "mozilla/StaticPtr.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsIEventTarget.h"
#include "nsIObserver.h"
#include "mozilla/RefPtr.h"
class nsIThread;
class nsIThreadPool;
namespace mozilla {
namespace image {
class Decoder;
class DecodePoolImpl;
/**
* DecodePool is a singleton class that manages decoding of raster images. It
* owns a pool of image decoding threads that are used for asynchronous
* decoding.
*
* DecodePool allows callers to run a decoder, handling management of the
* decoder's lifecycle and whether it executes on the main thread,
* off-main-thread in the image decoding thread pool, or on some combination of
* the two.
*/
class DecodePool : public nsIObserver
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
/// Initializes the singleton instance. Should be called from the main thread.
static void Initialize();
/// Returns the singleton instance.
static DecodePool* Singleton();
/// @return the number of processor cores we have available. This is not the
/// same as the number of decoding threads we're actually using.
static uint32_t NumberOfCores();
/// Ask the DecodePool to run @aDecoder asynchronously and return immediately.
void AsyncDecode(Decoder* aDecoder);
/**
* Run @aDecoder synchronously if the image it's decoding is small. If the
* image is too large, or if the source data isn't complete yet, run @aDecoder
* asynchronously instead.
*/
void SyncDecodeIfSmall(Decoder* aDecoder);
/**
* Run aDecoder synchronously if at all possible. If it can't complete
* synchronously because the source data isn't complete, asynchronously decode
* the rest.
*/
void SyncDecodeIfPossible(Decoder* aDecoder);
/**
* Returns an event target interface to the DecodePool's I/O thread. Callers
* who want to deliver data to workers on the DecodePool can use this event
* target.
*
* @return An nsIEventTarget interface to the thread pool's I/O thread.
*/
already_AddRefed<nsIEventTarget> GetIOEventTarget();
private:
friend class DecodePoolWorker;
DecodePool();
virtual ~DecodePool();
void Decode(Decoder* aDecoder);
void NotifyDecodeComplete(Decoder* aDecoder);
void NotifyProgress(Decoder* aDecoder);
static StaticRefPtr<DecodePool> sSingleton;
static uint32_t sNumCores;
RefPtr<DecodePoolImpl> mImpl;
// mMutex protects mThreads and mIOThread.
Mutex mMutex;
nsCOMArray<nsIThread> mThreads;
nsCOMPtr<nsIThread> mIOThread;
};
} // namespace image
} // namespace mozilla
#endif // mozilla_image_DecodePool_h