natDirectByteBufferImpl.cc [plain text]
#include <config.h>
#include <gcj/cni.h>
#include <jvm.h>
#include <stdlib.h>
#include <gnu/gcj/RawData.h>
#include <java/nio/DirectByteBufferImpl.h>
using gnu::gcj::RawData;
using java::nio::DirectByteBufferImpl;
RawData*
java::nio::DirectByteBufferImpl::allocateImpl (jint capacity)
{
return reinterpret_cast<gnu::gcj::RawData*> (::malloc (capacity));
}
void
java::nio::DirectByteBufferImpl::freeImpl (gnu::gcj::RawData* address)
{
::free (reinterpret_cast<void*> (address));
}
jbyte
DirectByteBufferImpl::getImpl (RawData* address, jint index)
{
jbyte* pointer = reinterpret_cast<jbyte*> (address) + index;
return *pointer;
}
void
DirectByteBufferImpl::getImpl (RawData* address, jint index,
jbyteArray dst, jint offset, jint length)
{
jbyte* src = reinterpret_cast<jbyte*> (address) + index;
memcpy (elements (dst) + offset, src, length);
}
void
java::nio::DirectByteBufferImpl::putImpl (gnu::gcj::RawData* address,
jint index, jbyte value)
{
jbyte* pointer = reinterpret_cast<jbyte*> (address) + index;
*pointer = value;
}
RawData*
java::nio::DirectByteBufferImpl::adjustAddress (RawData* address, jint offset)
{
jbyte* start = reinterpret_cast<jbyte*> (address) + offset;
return reinterpret_cast<RawData*>(start);
}
void
java::nio::DirectByteBufferImpl::shiftDown
(RawData* address, jint dst_offset, jint src_offset, jint count)
{
jbyte* dst = reinterpret_cast<jbyte*> (address) + dst_offset;
jbyte* src = reinterpret_cast<jbyte*> (address) + src_offset;
::memmove(dst, src, count);
}