| 437 | } |
| 438 | |
| 439 | void LiveCapture::childUpdate() |
| 440 | { |
| 441 | // first do a small lock and check if the list is currently empty |
| 442 | { |
| 443 | QMutexLocker l(&m_ChildrenLock); |
| 444 | |
| 445 | if(m_Children.empty()) |
| 446 | { |
| 447 | ui->childProcessLabel->setVisible(false); |
| 448 | ui->childProcesses->setVisible(false); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | // We only compare the child processes for a local context |
| 453 | const bool local = isLocal(); |
| 454 | |
| 455 | // enumerate processes outside of the lock |
| 456 | QProcessList processes; |
| 457 | if(local) |
| 458 | { |
| 459 | processes = QProcessInfo::enumerate(false); |
| 460 | } |
| 461 | |
| 462 | // now since we're adding and removing, we lock around the whole rest of the function. It won't be |
| 463 | // too slow. |
| 464 | { |
| 465 | QMutexLocker l(&m_ChildrenLock); |
| 466 | |
| 467 | if(!m_Children.empty()) |
| 468 | { |
| 469 | // remove any stale processes |
| 470 | for(int i = 0; i < m_Children.size(); i++) |
| 471 | { |
| 472 | bool found = false; |
| 473 | |
| 474 | for(QProcessInfo &p : processes) |
| 475 | { |
| 476 | if(p.pid() == m_Children[i].PID) |
| 477 | { |
| 478 | found = true; |
| 479 | break; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | if(!found && local) |
| 484 | { |
| 485 | if(m_Children[i].added) |
| 486 | { |
| 487 | for(int c = 0; c < ui->childProcesses->count(); c++) |
| 488 | { |
| 489 | QListWidgetItem *item = ui->childProcesses->item(c); |
| 490 | if(item->data(PIDRole).toUInt() == m_Children[i].PID) |
| 491 | delete ui->childProcesses->takeItem(c); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | // process expired/doesn't exist anymore |
| 496 | m_Children.removeAt(i); |