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Qore::DebugProgram Class Referenceabstract

DebugProgram class supports Qore Program debugging via ProgramControl. More...

`#include <QC_DebugProgram.dox.h>`

## Public Member Functions

nothing | addProgram (ProgramControl pgm)
| Add program to debugging.
int | breakProgram (ProgramControl pgm)
| Break program, i.e. all threads.
int | breakProgramThread (ProgramControl pgm, int tid)
| Break particular program thread.
| constructor ()
| Creates the debug program object with notification functions without any functionality.
| copy ()
| Throws an exception to prevent objects of this class from being copied.
| destructor ()
| Waits for all threads to finish executing, then deletes all global variables, dereferences the internal Program object and deletes the Qore object.
list | getAllPrograms ()
| Get all programs being debugged.
int | getInterruptedCount ()
| Get number of interrupted threads.
abstract | onAttach (ProgramControl pgm, reference rs, reference rtsid)
| Executed when new thread is attached to program being debugged.
abstract | onDetach (ProgramControl pgm, reference rs, reference rtsid)
| Executed when thread is datached from program being debugged.
abstract | onException (ProgramControl pgm, int statement, hash ex, reference dismiss, reference rs, reference rtsid)
| Executed when an exception is raised.
abstract | onExit (ProgramControl pgm, int statement, reference returnValue, reference rs, reference rtsid)
| Executed when a program/thread is exited.
abstract | onFunctionEnter (ProgramControl pgm, int statement, reference rs, reference rtsid)
| Executed when a function is entered.
abstract | onFunctionExit (ProgramControl pgm, int statement, reference returnValue, reference rs, reference rtsid)
| Executed when a function is exited.
abstract | onStep (ProgramControl pgm, int blockStatement, *int statement, *int breakpointId, reference flow, reference rs, reference rtsid)
| Executed when step is performed.
nothing | removeProgram (ProgramControl pgm)
| Remove program from debugging.
nothing | waitForTerminationAndClear ()
| Clear all programs and wait for all threads to finish executing callbacks.

## Detailed Description

DebugProgram class supports Qore Program debugging via ProgramControl.

One instance may be assigned to one or more ProgramControl instances which may run in one or more threads. ProgramControl is added to the debugging list, next the program being debugged notifies the debugger when the next execution event occurs. Calling of notification method is always performed in the program thread. When the program flow is to be interrupted then it happens in the notification method of this class. Then debugger decides to continue and then returns from the notification function and passes Debug Run State Constants value "step option" code back.

The debugger should probably handle control in separate thread.

The DebugProgram class defines the interface and the real functionality should be implemented in a child class.

Restrictions:
  MUST HAVE: Qore::PO_ALLOW_DEBUGGER

Example:
  const code = "for (int i=0; i<10; i++) {}";
  class MyDebugProgram dbg() inherits DebugProgram {
  private:
  onAttach(ProgramControl pgm, reference rs) {
  rs = DebugStep;
  }
  }
  ProgramControl p = ProgramControl::getProgram();
  dbg.addProgram(p);
  pgm.parse(code);
  pgm.saveProgram();
  pgm.run();

Since
  Qore 0.8.13

## Member Function Documentation

## copy()

Qore::DebugProgram::copy | ( |  | ) |

Throws an exception to prevent objects of this class from being copied.

Exceptions

  DEBUGPROGRAM-COPY-ERROR | copying DebugProgram objects is unsupported

## onException()

abstract Qore::DebugProgram::onException | ( | ProgramControl | pgm,
|  | int | statement,
|  | hash | ex,
|  | reference | dismiss,
|  | reference | rs,
|  | reference | rtsid
| ) |  |

pure virtual

Executed when an exception is raised.

See also
  ProgramControl::getStatementIdInfo

## onExit()

abstract Qore::DebugProgram::onExit | ( | ProgramControl | pgm,
|  | int | statement,
|  | reference | returnValue,
|  | reference | rs,
|  | reference | rtsid
| ) |  |

pure virtual

Executed when a program/thread is exited.

See also
  ProgramControl::getStatementIdInfo

## onFunctionEnter()

abstract Qore::DebugProgram::onFunctionEnter | ( | ProgramControl | pgm,
|  | int | statement,
|  | reference | rs,
|  | reference | rtsid
| ) |  |

pure virtual

Executed when a function is entered.

See also
  ProgramControl::getStatementIdInfo

## onFunctionExit()

abstract Qore::DebugProgram::onFunctionExit | ( | ProgramControl | pgm,
|  | int | statement,
|  | reference | returnValue,
|  | reference | rs,
|  | reference | rtsid
| ) |  |

pure virtual

Executed when a function is exited.

See also
  ProgramControl::getStatementIdInfo