Re^2: [threads] Open a file in one thread and allow others to write to it

I call it log but this is just text file containing data parsed from Web page. And it's name format is defined by the user in the config file.

Comment on Re^2: [threads] Open a file in one thread and allow others to write to it

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Re^3: [threads] Open a file in one thread and allow others to write to it by BioLion (Curate) on Nov 16, 2009 at 13:16 UTC
Why not have a shared variable which you write the 'log' to, say an array which holds the information for each line entry, and a thread which keep an eye on the size of the shared array and dumps it out when it hits whatever size you want and resets it. This way you don't need to worry about shared filehandles, only a shared in-memory variable ( IPC::Sharable seems to be the usual way of doing this ), and you have separated the 'logging' function from the 'collection' function. Just a something something...	[reply]

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Re^3: [threads] Open a file in one thread and allow others to write to it
by BioLion (Curate) on Nov 16, 2009 at 13:16 UTC

Why not have a shared variable which you write the 'log' to, say an array which holds the information for each line entry, and a thread which keep an eye on the size of the shared array and dumps it out when it hits whatever size you want and resets it.

This way you don't need to worry about shared filehandles, only a shared in-memory variable ( IPC::Sharable seems to be the usual way of doing this ), and you have separated the 'logging' function from the 'collection' function.

Just a something something...

[reply]