scan_worker

1. Overview

The scan_worker.cpp file executes device or image scans asynchronously and publishes progress and final reports.

This is an implementation file. It contains executable logic for the subsystem, including parsing, I/O, validation, recovery flow, or graphical behavior declared by the corresponding interface.

Its paired source or interface file is scan_worker.hpp.

Primary responsibilities:

  • Start scanner work outside the UI thread
  • Forward progress updates
  • Support cancellation or lifecycle control
  • Deliver completed ScanReport objects

2. File Identity and Scope

  • Source path: src/scan_worker.cpp
  • Language: C++
  • File role: implementation file
  • Physical lines: 84
  • Non-empty lines: 69
  • SHA-256: 3d49959ba2c7f9c99f4b41a97231f0527c492788f61898ae74e096b84fe6dd34

The declarations in this file use the global namespace.

3. Dependencies

3.1 Project Headers

  • scan_worker.hpp
  • scanner_engine.hpp

3.2 Standard and External Headers

  • iostream

These dependencies define the file’s compile-time integration with the recovery engine, GTK interface, on-disk format decoders, operating-system services, or C++ standard library.

4. Declared Types

No class, structure, or enumeration definition is declared directly in this file.

5. Constants and Configuration Values

No preprocessor or compile-time constants were detected as top-level declarations in this file.

6. Data Members and Persistent State

No class data members are declared directly in this file, or the file primarily implements methods declared elsewhere.

7. API and Function Inventory

The following callable interfaces or definitions were detected:

  • ScanWorker::~ScanWorker() – Destroys the object and releases resources owned by the instance.
  • void ScanWorker::start(const std::string&path,CompletionCallback cb,ProgressCallback progress_cb) – Implements the operation identified by this API and updates or returns the associated state.
  • bool ScanWorker::running()const – Implements the operation identified by this API and updates or returns the associated state.
  • void ScanWorker::join() – Implements the operation identified by this API and updates or returns the associated state.
  • void ScanWorker::request_cancel() – Implements the operation identified by this API and updates or returns the associated state.
  • bool ScanWorker::cancel_requested()const – Implements the operation identified by this API and updates or returns the associated state.

8. Operational Flow

The subsystem represented by this file normally participates in the following flow:

  1. Start scanner work outside the UI thread.
  2. Forward progress updates.
  3. Support cancellation or lifecycle control.
  4. Deliver completed ScanReport objects.
  5. Expose or execute the detected APIs: ~ScanWorker, start, running, join, request_cancel, cancel_requested.
  6. Return explicit results, progress data, recovered records, or diagnostics to the calling layer.

9. Validation and Error Handling

  • Input and output paths require existence checks, permission handling and safe destination construction.
  • The implementation contains explicit failure-catching paths and should retain the original diagnostic context.

10. Runtime, Concurrency, and Resource Management

  • Concurrency: the file contains worker-thread or synchronization primitives; UI updates and shared state must remain thread-safe.
  • Error handling: explicit error, exception or optional-result paths are present and form part of the file contract.

11. Security and Data-Recovery Considerations

  • Recovery code should prefer read-only source access and avoid writing to the original damaged medium.
  • Raw devices and image files are treated as untrusted binary input; every offset and length must remain bounded by the source size.

12. Implementation Considerations

  • The implementation should remain aligned with declarations in the paired header and preserve documented return-value semantics.

13. Integration with the Recovery Pipeline

  • The file belongs to the orchestration layer between the UI and low-level parsers.
  • It aggregates progress, results and diagnostics from multiple modules.
  • It should preserve cancellation and completion semantics across thread boundaries.

14. Licensing and Provenance

No explicit copyright or software-license statement was detected in the opening section of this individual file. Distribution terms should therefore be verified against the project-level license and repository metadata.

The SHA-256 value in this document can be used to associate the generated documentation with the exact source version analyzed.

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