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Commit 41066ed5 authored by Steve Kondik's avatar Steve Kondik
Browse files

HACK: Allow use of Eclair MemoryDealer for compatibility. 

Take #2.
parent 8009c68c

core/jni/CursorWindow.cpp

+17 −2
Original line number Diff line number Diff line
@@ -18,9 +18,12 @@ 
#define LOG_TAG "CursorWindow"



#include <utils/Log.h>

#ifdef USE_ECLAIR_MEMORYDEALER

#include <binder/MemoryDealer.h>

#else

#include <binder/MemoryHeapBase.h>

#include <binder/MemoryBase.h>



#endif

#include <assert.h>

#include <string.h>

#include <stdlib.h>
@@ -38,7 +41,11 @@ CursorWindow::CursorWindow(size_t maxSize) : 
{

}



#ifdef USE_ECLAIR_MEMORYDEALER

bool CursorWindow::setMemory(sp<IMemory> memory)

#else

bool CursorWindow::setMemory(const sp<IMemory>& memory)

#endif

{

    mMemory = memory;

    mData = (uint8_t *) memory->pointer();
@@ -48,6 +55,9 @@ bool CursorWindow::setMemory(const sp<IMemory>& memory) 
    mHeader = (window_header_t *) mData;



    // Make the window read-only

#ifdef USE_ECLAIR_MEMORYDEALER

    mHeap = NULL;

#endif

    ssize_t size = memory->size();

    mSize = size;

    mMaxSize = size;
@@ -59,11 +69,16 @@ LOG_WINDOW("Created CursorWindow from existing IMemory: mFreeOffset = %d, numRow 
bool CursorWindow::initBuffer(bool localOnly)

{

    //TODO Use a non-memory dealer mmap region for localOnly



#ifdef USE_ECLAIR_MEMORYDEALER

    mHeap = new MemoryDealer(new SharedHeap(mMaxSize, 0, "CursorWindow"));

    if (mHeap != NULL) {

        mMemory = mHeap->allocate(mMaxSize);

#else

    sp<MemoryHeapBase> heap;

    heap = new MemoryHeapBase(mMaxSize, 0, "CursorWindow");

    if (heap != NULL) {

        mMemory = new MemoryBase(heap, 0, mMaxSize);

#endif

        if (mMemory != NULL) {

            mData = (uint8_t *) mMemory->pointer();

            if (mData) {

core/jni/CursorWindow.h

+11 −1
Original line number Diff line number Diff line
@@ -21,9 +21,12 @@ 
#include <stddef.h>

#include <stdint.h>



#ifdef USE_ECLAIR_MEMORYDEALER

#include <binder/MemoryDealer.h>

#else

#include <binder/IMemory.h>

#include <utils/RefBase.h>



#endif

#include <jni.h>



#define DEFAULT_WINDOW_SIZE 4096
@@ -101,7 +104,11 @@ class CursorWindow 
public:

                        CursorWindow(size_t maxSize);

                        CursorWindow(){}

#ifdef USE_ECLAIR_MEMORYDEALER

    bool                setMemory(sp<IMemory>);

#else

    bool                setMemory(const sp<IMemory>&);

#endif

                        ~CursorWindow();



    bool                initBuffer(bool localOnly);
@@ -189,6 +196,9 @@ private: 
    size_t mSize;

    size_t mMaxSize;

    window_header_t * mHeader;

#ifdef USE_ECLAIR_MEMORYDEALER

    sp<MemoryDealer> mHeap;

#endif

    sp<IMemory> mMemory;



    /**

include/binder/MemoryDealer.h

+5 −0
Original line number Diff line number Diff line
@@ -14,6 +14,10 @@ 
 * limitations under the License.

 */



#ifdef USE_ECLAIR_MEMORYDEALER

#include <binder/MemoryDealerEclair.h>

#else



#ifndef ANDROID_MEMORY_DEALER_H

#define ANDROID_MEMORY_DEALER_H
@@ -58,3 +62,4 @@ private: 
}; // namespace android



#endif // ANDROID_MEMORY_DEALER_H

#endif // USE_ECLAIR_MEMORYDEALER

include/binder/MemoryDealerEclair.h

0 → 100644
+257 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2007 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#ifndef ANDROID_MEMORY_DEALER_H

#define ANDROID_MEMORY_DEALER_H





#include <stdint.h>

#include <sys/types.h>



#include <binder/IMemory.h>

#include <utils/threads.h>

#include <binder/MemoryHeapBase.h>



namespace android {

// ----------------------------------------------------------------------------

class String8;



/*

 * interface for implementing a "heap". A heap basically provides

 * the IMemoryHeap interface for cross-process sharing and the

 * ability to map/unmap pages within the heap.

 */

class HeapInterface : public virtual BnMemoryHeap

{

public:

    // all values must be page-aligned

    virtual sp<IMemory> mapMemory(size_t offset, size_t size) = 0;



    HeapInterface();

protected:

    virtual ~HeapInterface();

};



// ----------------------------------------------------------------------------



/*

 * interface for implementing an allocator. An allocator provides

 * methods for allocating and freeing memory blocks and dumping

 * its state.

 */

class AllocatorInterface : public RefBase

{

public:

    enum {

        PAGE_ALIGNED = 0x00000001

    };



    virtual size_t      allocate(size_t size, uint32_t flags = 0) = 0;

    virtual status_t    deallocate(size_t offset) = 0;

    virtual size_t      size() const = 0;

    virtual void        dump(const char* what, uint32_t flags = 0) const = 0;

    virtual void        dump(String8& res,

            const char* what, uint32_t flags = 0) const = 0;



    AllocatorInterface();

protected:

    virtual ~AllocatorInterface();

};



// ----------------------------------------------------------------------------



/*

 * concrete implementation of HeapInterface on top of mmap() 

 */

class SharedHeap : public HeapInterface, public MemoryHeapBase

{

public:

                        SharedHeap();

                        SharedHeap(size_t size, uint32_t flags = 0, char const * name = NULL);

    virtual             ~SharedHeap();

    virtual sp<IMemory> mapMemory(size_t offset, size_t size);

};



// ----------------------------------------------------------------------------



/*

 * A simple templatized doubly linked-list implementation

 */



template <typename NODE>

class LinkedList

{

    NODE*  mFirst;

    NODE*  mLast;



public:

                LinkedList() : mFirst(0), mLast(0) { }

    bool        isEmpty() const { return mFirst == 0; }

    NODE const* head() const { return mFirst; }

    NODE*       head() { return mFirst; }

    NODE const* tail() const { return mLast; }

    NODE*       tail() { return mLast; }



    void insertAfter(NODE* node, NODE* newNode) {

        newNode->prev = node;

        newNode->next = node->next;

        if (node->next == 0) mLast = newNode;

        else                 node->next->prev = newNode;

        node->next = newNode;

    }



    void insertBefore(NODE* node, NODE* newNode) {

         newNode->prev = node->prev;

         newNode->next = node;

         if (node->prev == 0)   mFirst = newNode;

         else                   node->prev->next = newNode;

         node->prev = newNode;

    }



    void insertHead(NODE* newNode) {

        if (mFirst == 0) {

            mFirst = mLast = newNode;

            newNode->prev = newNode->next = 0;

        } else {

            newNode->prev = 0;

            newNode->next = mFirst;

            mFirst->prev = newNode;

            mFirst = newNode;

        }

    }

    

    void insertTail(NODE* newNode) {

        if (mLast == 0) {

            insertHead(newNode);

        } else {

            newNode->prev = mLast;

            newNode->next = 0;

            mLast->next = newNode;

            mLast = newNode;

        }

    }



    NODE* remove(NODE* node) {

        if (node->prev == 0)    mFirst = node->next;

        else                    node->prev->next = node->next;

        if (node->next == 0)    mLast = node->prev;

        else                    node->next->prev = node->prev;

        return node;

    }

};





/*

 * concrete implementation of AllocatorInterface using a simple

 * best-fit allocation scheme

 */

class SimpleBestFitAllocator : public AllocatorInterface

{

public:



                        SimpleBestFitAllocator(size_t size);

    virtual             ~SimpleBestFitAllocator();



    virtual size_t      allocate(size_t size, uint32_t flags = 0);

    virtual status_t    deallocate(size_t offset);

    virtual size_t      size() const;

    virtual void        dump(const char* what, uint32_t flags = 0) const;

    virtual void        dump(String8& res,

            const char* what, uint32_t flags = 0) const;



private:



    struct chunk_t {

        chunk_t(size_t start, size_t size) 

            : start(start), size(size), free(1), prev(0), next(0) {

        }

        size_t              start;

        size_t              size : 28;

        int                 free : 4;

        mutable chunk_t*    prev;

        mutable chunk_t*    next;

    };



    ssize_t  alloc(size_t size, uint32_t flags);

    chunk_t* dealloc(size_t start);

    void     dump_l(const char* what, uint32_t flags = 0) const;

    void     dump_l(String8& res, const char* what, uint32_t flags = 0) const;



    static const int    kMemoryAlign;

    mutable Mutex       mLock;

    LinkedList<chunk_t> mList;

    size_t              mHeapSize;

};



// ----------------------------------------------------------------------------



class MemoryDealer : public RefBase

{

public:



    enum {

        READ_ONLY = MemoryHeapBase::READ_ONLY,

        PAGE_ALIGNED = AllocatorInterface::PAGE_ALIGNED

    };



    // creates a memory dealer with the SharedHeap and SimpleBestFitAllocator

    MemoryDealer(size_t size, uint32_t flags = 0, const char* name = 0);



    // provide a custom heap but use the SimpleBestFitAllocator

    MemoryDealer(const sp<HeapInterface>& heap);



    // provide both custom heap and allocotar

    MemoryDealer(

            const sp<HeapInterface>& heap,

            const sp<AllocatorInterface>& allocator);



    virtual sp<IMemory> allocate(size_t size, uint32_t flags = 0);

    virtual void        deallocate(size_t offset);

    virtual void        dump(const char* what, uint32_t flags = 0) const;





    sp<IMemoryHeap> getMemoryHeap() const { return heap(); }

    sp<AllocatorInterface> getAllocator() const { return allocator(); }



protected:

    virtual ~MemoryDealer();



private:    

    const sp<HeapInterface>&        heap() const;

    const sp<AllocatorInterface>&   allocator() const;



    class Allocation : public BnMemory {

    public:

        Allocation(const sp<MemoryDealer>& dealer,

                ssize_t offset, size_t size, const sp<IMemory>& memory);

        virtual ~Allocation();

        virtual sp<IMemoryHeap> getMemory(ssize_t* offset, size_t* size) const;

    private:

        sp<MemoryDealer>        mDealer;

        ssize_t                 mOffset;

        size_t                  mSize;

        sp<IMemory>             mMemory;

    };



    sp<HeapInterface>           mHeap;

    sp<AllocatorInterface>      mAllocator;

};





// ----------------------------------------------------------------------------

}; // namespace android



#endif // ANDROID_MEMORY_DEALER_H

include/binder/MemoryHeapPmem.h

+9 −1
Original line number Diff line number Diff line
@@ -20,18 +20,26 @@ 
#include <stdlib.h>

#include <stdint.h>



#ifdef USE_ECLAIR_MEMORYDEALER

#include <binder/MemoryDealer.h>

#endif

#include <binder/MemoryHeapBase.h>

#include <binder/IMemory.h>

#include <utils/SortedVector.h>

#ifndef USE_ECLAIR_MEMORYDEALER

#include <utils/threads.h>

#endif



namespace android {



class MemoryHeapBase;



// ---------------------------------------------------------------------------



#ifdef USE_ECLAIR_MEMORYDEALER

class MemoryHeapPmem : public HeapInterface, public MemoryHeapBase

#else

class MemoryHeapPmem : public MemoryHeapBase

#endif

{

public:

    class MemoryPmem : public BnMemory {