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ExceptionLogger

FreePascal Exception Logger aka madExcept or EurekaLog.

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README

lazarus-exception-logger

Extended version of ExceptionLogger (https://github.com/beNative/lazarus)) At the moment of unhanled exception in the application shows basic application information and exception stack trace report.

Also the error report can be saved to a file. New error report record will be added to the end of the existing report file.

Repository: https://github.com/r3code/lazarus-exception-logger

Example of app info:

pascal
Class: Exception
Message: Simple exception
Application: Demo
Version: Demo
Time: 29.11.2017 13:58:57
Process ID: 6412
Thread ID: 6240

Example of error report file

pascal
Date/time          : 2017-12-01 17:53:48.110
Operating system   : Windows 7 SP1 i386
user name          : ??????????????
program up time    : 0days 0hours 0min 2sec 356ms
free disk space    : 296 GB
Process ID         : 15860
Thread ID          : 16152
Executable         : IncodeUsage.exe
App. title         : IncodeUsage Exaple of ExceptionLogger
Version            : 1.1.0.0
Compiled date      : 2017/12/01 at 17:52:03
Build target       : i386 - Win32
LCL version        : LCL 1.6.4.0
Widget set         : Win32/Win64 widget set
Exception class    : EMyException
Exception message  : Woo!
code revision      : 43594
pascal
01: 00426B2D   TFRMTESTINCODE.BUTTON1CLICK in utestincode.pas (62)
02: 004FCB98   TCONTROL.CLICK in ./include/control.inc (2736)
03: 0051194D   TBUTTONCONTROL.CLICK in ./include/buttoncontrol.inc (54)
04: 00511F6D   TCUSTOMBUTTON.CLICK in ./include/buttons.inc (169)
05: 0051187B   TBUTTONCONTROL.WMDEFAULTCLICKED in ./include/buttoncontrol.inc (20)
06: 0040D188     (754)
07: 004F2CA0   TWINCONTROL.WNDPROC in ./include/wincontrol.inc (5384)
08: 0053BAE9   DELIVERMESSAGE in lclmessageglue.pas (112)
09: 004CFB8F   TWINDOWPROCHELPER.DOWINDOWPROC in ./win32/win32callback.inc (2441)
10: 004D021B   WINDOWPROC in ./win32/win32callback.inc (2604)
11: 00540F27   CUSTOMFORMWNDPROC in ./win32/win32wsforms.pp (382)
12: 76CBC4B7     
13: 76CBC5B7     
14: 76CB5264     
15: 76CB5552     
16: 738445A1     
17: 73844603

Example of exception stack trace dialog:

see doc/images/error_report.jpg Exception Report Example

Install

  • Download and install lpk file as Lazarus package.
  • Or copy source file to your project to use it standalone, include the files in a project or set the source path, init it directly in your code.

Usage

Common

Set Project Options - Debugging Checks and assertions

  • I/O (-Ci)
  • Range (-Cr)
  • Overflow(-Co)
  • Stack (-Ct)
  • other by your needs.

Generate debugging info...: Yes

Type of debug info: Stabs (-gs)

Display line numbers...: Yes

Standalone usage

See demo/IncodeUsage.lpr

As Component

Put component TExceptionLogger (tab Samples) to your form and set properties you want.

TExceptionLogger Properties

LogFileName - filepath to write report to.

MaxCallStackDepth - maximum count of lines listed in the report, default 20.

Demo

See demo folder.