What is Parallel::ForkManager in Perl?

Parallel::ForkManager is a Perl module that provides a simple way to manage a pool of processes and execute tasks in parallel. This is particularly useful for speeding up operations that can be done concurrently, such as web scraping, data processing, or any CPU-bound tasks. The module allows you to fork multiple processes, limit the number of simultaneous processes, and handle the results of each child process easily.

Example

use Parallel::ForkManager; # Number of processes you want to run in parallel my $pm = Parallel::ForkManager->new(4); # An array of tasks to be processed my @tasks = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10); foreach my $task (@tasks) { $pm->start and next; # Forks and returns the pid for the child # Simulate some work being done print "Processing task $task in process $$\n"; sleep(2); # Simulates time taken for the task $pm->finish; # Terminates the child process } $pm->wait_all_children;

Parallel::ForkManager Perl parallel processing process management concurrency

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