//-----------------------------------------------------------------------------
// name: UINT__ join()
// desc: shred can call this to get an index into the vector of read pointers
//-----------------------------------------------------------------------------
UINT__ CBufferAdvance::join( Chuck_Event * event )
{
// TODO: necessary?
ACQUIRE_MUTEX
// index of new pointer that will be pushed back
UINT__ read_offset_index;
// add new pointer pointing (as pointers do) to current write offset
// (shreds don't get interrupted, so m_write_offset will always be correct, right?)
// (uh, hope so...)
if( !m_free.empty() )
{
read_offset_index = m_free.front();
m_free.pop();
//assert( read_offset_index < m_read_offsets.size() );
m_read_offsets[read_offset_index] = ReadOffset( m_write_offset, event );
}
else
{
read_offset_index = m_read_offsets.size();
m_read_offsets.push_back( ReadOffset( m_write_offset, event ) );
}
// TODO: necessary?
RELEASE_MUTEX
// return index
return read_offset_index;
}
int File::ReadOffsetAlloc(FILE *file, u32 offset, u32 length, u8 **outbuf)
{
u8 *buffer = NULL;
int ret;
/* Allocate memory */
buffer = (u8*)Tools::AllocateMemory(length);
if (!buffer) return -1;
/* Read file */
ret = ReadOffset(file, offset, length, &buffer);
if (ret < 0)
{
delete buffer; buffer = NULL;
return ret;
}
DCFlushRange(buffer, length);
/* Set pointer */
*outbuf = buffer;
return 0;
}
