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Commit cbf37263 authored by Adrian Roos's avatar Adrian Roos
Browse files

Revert "Revert "Track ashmem memory usage in Parcel"" 

This reverts commit 6880307e.

Bug: 25004154
Change-Id: I9b432d1ebc39f3bbcd7afdefc403f0fb6ced8158
parent 6880307e

include/binder/Parcel.h

+4 −2
Original line number Diff line number Diff line
@@ -342,9 +342,11 @@ public: 


private:

    size_t mBlobAshmemSize;

    size_t mOpenAshmemSize;



public:

    size_t getBlobAshmemSize() const;

    size_t getOpenAshmemSize() const;

};



// ---------------------------------------------------------------------------
@@ -412,9 +414,9 @@ inline TextOutput& operator<<(TextOutput& to, const Parcel& parcel) 


// Generic acquire and release of objects.

void acquire_object(const sp<ProcessState>& proc,

                    const flat_binder_object& obj, const void* who);

                    const flat_binder_object& obj, const void* who, size_t* outAshmemSize);

void release_object(const sp<ProcessState>& proc,

                    const flat_binder_object& obj, const void* who);

                    const flat_binder_object& obj, const void* who, size_t* outAshmemSize);



void flatten_binder(const sp<ProcessState>& proc,

                    const sp<IBinder>& binder, flat_binder_object* out);

libs/binder/Parcel.cpp

+28 −10
Original line number Diff line number Diff line
@@ -96,7 +96,7 @@ enum { 
};



void acquire_object(const sp<ProcessState>& proc,

    const flat_binder_object& obj, const void* who)

    const flat_binder_object& obj, const void* who, size_t* outAshmemSize)

{

    switch (obj.type) {

        case BINDER_TYPE_BINDER:
@@ -123,8 +123,13 @@ void acquire_object(const sp<ProcessState>& proc, 
            return;

        }

        case BINDER_TYPE_FD: {

            // intentionally blank -- nothing to do to acquire this, but we do

            // recognize it as a legitimate object type.

            if (obj.cookie != 0) {

                // If we own an ashmem fd, keep track of how much memory it refers to.

                int size = ashmem_get_size_region(obj.handle);

                if (size > 0) {

                    *outAshmemSize += size;

                }

            }

            return;

        }

    }
@@ -133,7 +138,7 @@ void acquire_object(const sp<ProcessState>& proc, 
}



void release_object(const sp<ProcessState>& proc,

    const flat_binder_object& obj, const void* who)

    const flat_binder_object& obj, const void* who, size_t* outAshmemSize)

{

    switch (obj.type) {

        case BINDER_TYPE_BINDER:
@@ -160,7 +165,14 @@ void release_object(const sp<ProcessState>& proc, 
            return;

        }

        case BINDER_TYPE_FD: {

            if (obj.cookie != 0) close(obj.handle);

            if (obj.cookie != 0) {

                int size = ashmem_get_size_region(obj.handle);

                if (size > 0) {

                    *outAshmemSize -= size;

                }



                close(obj.handle);

            }

            return;

        }

    }
@@ -504,7 +516,7 @@ status_t Parcel::appendFrom(const Parcel *parcel, size_t offset, size_t len) 


            flat_binder_object* flat

                = reinterpret_cast<flat_binder_object*>(mData + off);

            acquire_object(proc, *flat, this);

            acquire_object(proc, *flat, this, &mOpenAshmemSize);



            if (flat->type == BINDER_TYPE_FD) {

                // If this is a file descriptor, we need to dup it so the
@@ -1026,7 +1038,7 @@ restart_write: 
        // Need to write meta-data?

        if (nullMetaData || val.binder != 0) {

            mObjects[mObjectsSize] = mDataPos;

            acquire_object(ProcessState::self(), val, this);

            acquire_object(ProcessState::self(), val, this, &mOpenAshmemSize);

            mObjectsSize++;

        }
@@ -1609,7 +1621,7 @@ void Parcel::releaseObjects() 
        i--;

        const flat_binder_object* flat

            = reinterpret_cast<flat_binder_object*>(data+objects[i]);

        release_object(proc, *flat, this);

        release_object(proc, *flat, this, &mOpenAshmemSize);

    }

}
@@ -1623,7 +1635,7 @@ void Parcel::acquireObjects() 
        i--;

        const flat_binder_object* flat

            = reinterpret_cast<flat_binder_object*>(data+objects[i]);

        acquire_object(proc, *flat, this);

        acquire_object(proc, *flat, this, &mOpenAshmemSize);

    }

}
@@ -1805,7 +1817,7 @@ status_t Parcel::continueWrite(size_t desired) 
                    // will need to rescan because we may have lopped off the only FDs

                    mFdsKnown = false;

                }

                release_object(proc, *flat, this);

                release_object(proc, *flat, this, &mOpenAshmemSize);

            }

            binder_size_t* objects =

                (binder_size_t*)realloc(mObjects, objectsSize*sizeof(binder_size_t));
@@ -1891,6 +1903,7 @@ void Parcel::initState() 
    mAllowFds = true;

    mOwner = NULL;

    mBlobAshmemSize = 0;

    mOpenAshmemSize = 0;

}



void Parcel::scanForFds() const
@@ -1913,6 +1926,11 @@ size_t Parcel::getBlobAshmemSize() const 
    return mBlobAshmemSize;

}



size_t Parcel::getOpenAshmemSize() const

{

    return mOpenAshmemSize;

}



// --- Parcel::Blob ---



Parcel::Blob::Blob() :