| 364 | } |
| 365 | |
| 366 | void write( const void * _buf, int _len ) |
| 367 | { |
| 368 | if( isInvalid() || _len > SHM_FIFO_SIZE ) |
| 369 | { |
| 370 | return; |
| 371 | } |
| 372 | lock(); |
| 373 | while( _len > SHM_FIFO_SIZE - m_data->endPtr ) |
| 374 | { |
| 375 | // if no space is left, try to move data to front |
| 376 | if( m_data->startPtr > 0 ) |
| 377 | { |
| 378 | memmove( m_data->data, |
| 379 | m_data->data + m_data->startPtr, |
| 380 | m_data->endPtr - m_data->startPtr ); |
| 381 | m_data->endPtr = m_data->endPtr - |
| 382 | m_data->startPtr; |
| 383 | m_data->startPtr = 0; |
| 384 | } |
| 385 | unlock(); |
| 386 | #ifndef LMMS_BUILD_WIN32 |
| 387 | usleep( 5 ); |
| 388 | #endif |
| 389 | lock(); |
| 390 | } |
| 391 | fastMemCpy( m_data->data + m_data->endPtr, _buf, _len ); |
| 392 | m_data->endPtr += _len; |
| 393 | unlock(); |
| 394 | } |
| 395 | |
| 396 | volatile bool m_invalid; |
| 397 | bool m_master; |