dalvikvm-heap(16081): Grow heap (frag case) to 11.341MB for 460816-byte allocation

[learner]

Hello All,

In my android application i am allocating 5 direct buffers as follows:

private ByteBuffer[] mBuffer;
//
mBuffer = new ByteBuffer[5];
for (int i = 0; i < 5; i++) {
mBuffer[i] = ByteBuffer.allocateDirect(mBufSize);//mBufSize would
be 460800 Bytes

}

And in another module of my app, i will get ByteBuffer from JNI (which
is allocated in JNI using NewDirectByteBuffer) and i will retrieve the
byte array from it in to an already allocated byte array like this:

public byte[] getBuffer()
{
Log.d("MyTest","Entered in to GetBuffer");
returnedBuffer = new byte[mValue.capacity()];//mValue is the
ByteBuffer returned to me from JNI and capacity is 460800

mValue.get(returnedBuffer);
return returnedBuffer;

}

But once the mValue.get statement is executed i am getting an
exception which says:

dalvikvm-heap(16081): Grow heap (frag case) to 11.341MB for 460816-
byte allocation.

I am not able to understand what is the reason for it. Is
allocateDirect call allocating the memory in heap space? Am i ran out
of heap memory?

How can i resolve this situation.

regards,

Sriram.

[Narayan Kamath]

What leads you to think this is an error message or exception ?  By itself

that is just an informational message. Are you seeing any other abnormal

behaviour ?

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[learner]

Hello Mr Narayan,

Immediately after this log, i get A/libc(18997): Fatal signal 11
(SIGSEGV) at 0x70787f80 (code=1) and during the debug process, i
observed that control is lost after "mValue.get(returnedBuffer);"
with the dump giving the above logs.

mValue is not null and returnedBuffer is allocated by me with mValue
size.

I dont know why my ByteBuffer.get() method is failing.

regards,

Sriram.

[learner]

Hi Narayan,

I found the mistake in my code. It nothing to do with direct buffer,
but i am trying to get an array from an invalid direct buffer. I
resolved the problem now.

Thanks for your help.

regards,

Sriram.

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