C++ (Cpp) LVStreamRef::GetWriteBuffer Examples

Example #1

File: cr3win.cpp Project: MEHDIDZ16/boox-opensource

void MMapTest()
{
	// write
	{
		LVStreamRef stream = LVMapFileStream( "c:\\cr3\\mapfile.dat", LVOM_APPEND, 1000000 );
		LVStreamBufferRef buf = stream->GetWriteBuffer( 0, stream->GetSize() );
		lUInt32 * p = (lUInt32*)buf->getReadWrite();
		for ( lUInt32 i=0; i<1000000/4; i++ ) {
			p[i] = i;
		}
	}
	// read
	{
		LVStreamRef stream = LVMapFileStream( "c:\\cr3\\mapfile.dat", LVOM_READ, 1000000 );
		LVStreamBufferRef buf = stream->GetReadBuffer( 0, stream->GetSize() );
		const lUInt32 * p = (const lUInt32*)buf->getReadOnly();
		for ( lUInt32 i=0; i<1000000/4; i++ ) {
			if ( p[i]!=i ) {
				CRLog::error("MMapTest failed!!!");
				break;
			}
		}
	}
}