CODEWITHSUNDEEP
cconcurrencypthreads
Lopson
Lopson

Reputation: 1217

Pthread: Multiple File Access

I have two threads that will be accessing multiples files. These two threads might try to access the same file at the same time. How can I guarantee exclusive access to a file in this scenario using pthread functions and structs in C, knowing that there will be a very large number of files that these two threads will be accessing? I know I can create a big number of mutexes, but that doesn't seem like the way to go since there is a limit to that number.

Upvotes: 0

Views: 531

Answers (1)

Steve Emmerson
Steve Emmerson

Reputation: 7832

Have each thread place an advisory write-lock the file that's it's about to access using, for example, flock().

Upvotes: 1

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