Implement threading in Delphi

Threading & Multi-Threadingskillsetup L237
delphicleancode/delphi-spec-kit
What it does

Implement concurrent tasks in Delphi

Best for

Long-running background operations in Delphi without blocking the UI thread.

Inputs
  • · Worker procedure
  • · Shared data
  • · Cancellation token
Outputs
  • · Thread result
  • · UI updates via Queue/Synchronize
Requires
  • · TThread
  • · TTask
  • · TParallel
Preconditions
  • · VCL or FMX form available
  • · No direct UI access from secondary threads
Failure modes
  • · Deadlock via Synchronize
  • · Memory leak if FreeOnTerminate=false
  • · UI race conditions
Trust signals
  • · Producer-Consumer pattern
  • · Synchronize vs Queue tradeoff documented
  • · Auto-Free guidance