delphi - Cancel attached backup service -

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my software has make database backups , 1 of expected features backup can canceled.

as can think of, have 3 options:

  • use component, such tibbackupservice
  • programmatically call gbak using shellexecute or so
  • programmatically call service using gds32.dll api

i tried first 1 , if cancel service keeps running (the backup file built until end , resoureces keep unchanged).

the second option smells me , don´t think i´ll able abort operation well.

the third option cost hours , i´d know:

  • is there way abort backup operation using first option?
  • the third option viable? if yes, operation abortable?
  • is firebird backup operation cancelable @ all?

thanks

ps: didn't mention firebird version using.

1) gbak "normal" application connects database, read information, , write backup file. restore process inverse.

2) when use servicesapi backup (option 1 , 3, in example), firebird start "internal" version of gbak job.

for of options, if using firebird 2.1, can run "delete mon$statements mon$attachment_id = " different connection. stop backup process. fb 2.5, can drop gbak connection, doing "delete mon$attachments where...".

you can find gbak attachment id looking mon$remote_process in mon$attachments table.


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