Root > Reference > All Functions > InitCheckFreeze

Procedure InitCheckFreeze

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Starts checking for freezes and hangs.

 

Unit

EFreeze

 

Syntax

 

Code (Delphi)

procedure InitCheckFreeze(

const AThreadID: Cardinal = 0;

const AMainWnd: HWND = 0;

const AThreadHandle: THandle = 0;

const ATimeout: Cardinal = 4;

const AAntiFreezeMsg: String = '';

const AAntiFreezeWCTMsg: String = ''

);

 

Parameters

AThreadID [in, optional]

Thread ID to detect hangs inside this thread. Usually this is MainThreadID. Default is 0 - which means "use MainThreadID". This value can be ignored by some checks. For example, Wait Chain Traversal (WCT) check detects deadlocks in any EurekaLog-enabled threads - thus it does not need thread ID.

 

AMainWnd [in, optional]

A handle of main application form. Default is 0 - which means autodetection. This value can be ignored by some checks. For example, Wait Chain Traversal (WCT) check detects deadlocks in any EurekaLog-enabled threads - thus it does not need window handle.

 

AThreadHandle [in, optional]

A handle of thread identified by AThreadID.

 

ATimeout [in, optional]

A timeout in seconds. Default is 4. It is recommended to pass CurrentEurekaLogOptions.FreezeTimeout here.

 

AAntiFreezeMsg [in, optional]

A message for freeze exception. Default is 'The application seems to be frozen.'. It is recommended to pass CurrentEurekaLogOptions.CustomizedExpandedTexts[mtException_AntiFreeze] here.

 

AAntiFreezeWCTMsg [in, optional]

Alternative message for freeze exception. Default is 'A deadlock was detected in thread %d.'. It is recommended to pass CurrentEurekaLogOptions.CustomizedExpandedTexts[mtException_AntiFreezeWCT] here.

 

Remarks

This function creates a background freeze detection thread. Thread will use current EurekaLog options.

 

The function will use FreezeThreadClass global variable to determinate which class should be used as background freeze detection thread.

 

Important!

This function should be called from main thread.

 

Note

This function is called automatically during initialization of EurekaLog. You can call it manually to re-create/re-initialize freeze detection checks. For example, if you want to change timeout at run-time.

 

The function will not be called automatically if hang detection is disabled in EurekaLog project options.

 

Warning

This function do nothing if freeze detection thread is already running. Use DoneCheckFreeze to stop background freeze detection thread.

 

Note

This function will do nothing if your current settings blocks freeze detection. For example, if your settings indicate that freeze detection should not be active during debugging, and you currently run application under debugging - then this call will do nothing.

 

See also



Send feedback... Build date: 2024-09-30
Last edited: 2024-09-30
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