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v/vlib/sync/pool/pool_test.v

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import time
import sync.pool
pub struct SResult {
s string
}
pub struct IResult {
i int
}
fn worker_s(p &pool.PoolProcessor, idx int, worker_id int) &SResult {
item := p.get_item<string>(idx)
println('worker_s worker_id: $worker_id | idx: $idx | item: $item')
time.wait(3 * time.millisecond)
return &SResult{'$item $item'}
}
fn worker_i(p &pool.PoolProcessor, idx int, worker_id int) &IResult {
item := p.get_item<int>(idx)
println('worker_i worker_id: $worker_id | idx: $idx | item: $item')
time.wait(5 * time.millisecond)
return &IResult{item * 1000}
}
fn test_work_on_strings() {
mut pool_s := pool.new_pool_processor(
callback: worker_s
maxjobs: 8
)
pool_s.work_on_items(['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'])
for x in pool_s.get_results<SResult>() {
println(x.s)
assert x.s.len > 1
}
}
fn test_work_on_ints() {
// NB: since maxjobs is left empty here,
// the pool processor will use njobs = runtime.nr_jobs so that
// it will work optimally without overloading the system
mut pool_i := pool.new_pool_processor(
callback: worker_i
)
pool_i.work_on_items([1, 2, 3, 4, 5, 6, 7, 8])
for x in pool_i.get_results<IResult>() {
println(x.i)
assert x.i > 100
}
}