Is there a way to detect if a file is open in another application from MATLAB?
85 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a problem reading a file and I would like to check if the file is already opened by another application before using load.
I have received access conflicts when I try to read a file with MATLAB while this file is written to by another application.
Any idea?
2 commentaires
Walter Roberson
le 8 Fév 2011
Are you willing to restrict this question to MS Windows and access to either local drives or a shared drive on a Windows server? The answers get much more complicated in other cases.
Réponse acceptée
Andreas Goser
le 8 Fév 2011
The FOPEN command returns a -1 if there is an issue with opening the file. You can use that. Even if you use LOAD or other functions to really import the data, you can use FOPEN (and probably FCLOSE) to test if it is blocked by another application.
3 commentaires
Andreas Goser
le 8 Fév 2011
If the other application is not writing, there is no "block". So a question here is what else do you have under control and how narrow the problem is.
Plus de réponses (1)
Aurelien Queffurust
le 8 Fév 2011
Another strategy is to use a file as a semaphore.
This trick is used for example in this submission: Multicore - Parallel processing on multiple cores
0 commentaires
Voir également
Catégories
En savoir plus sur Low-Level File I/O dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!