EV::Future

High-performance async control flow for Perl's EV event loop, implemented in XS.

Functions

• parallel(\@tasks, \&final_cb [, $unsafe]) - run all tasks concurrently
• parallel_limit(\@tasks, $limit, \&final_cb [, $unsafe]) - concurrent with concurrency limit
• series(\@tasks, \&final_cb [, $unsafe]) - run tasks sequentially

Install

perl Makefile.PL && make && make test

Requires Perl 5.10+, EV 4.37+, and a C compiler.

Benchmarks

1000 sync tasks x 5000 iterations:

| | parallel | parallel_limit(10) | series | |---|---:|---:|---:| | EV::Future (unsafe) | 4,386 | 4,673 | 5,000 | | EV::Future (safe) | 2,262 | 2,688 | 2,591 | | AnyEvent cv | 1,027 | - | 3,185 | | Future::XS | 982 | 431 | 893 | | Promise::XS | 32 | - | 809 |

Safe mode adds per-task double-call protection and G_EVAL. Unsafe mode skips both, roughly doubling throughput.

Examples

See eg/ directory for usage with AnyEvent::YACurl, EV::Hiredis, and EV::Etcd.