p = Pool(2)
p.map(start_simulation, test_devices)
与上面的代码一样，我想用start_simulation函数启动两个worker，但有没有办法按时间间隔延迟它？例如：
worker1@start_simulation
wait 5 minutes
worker2@start_simulation
答案 0 :(得分：0)
您可能更容易实施<?php
require_once('./database/connect_bd.php');
function insert(){
$dbc = connection();
$returnn = array();
$errors = array();
$admin;
$product;
$record;
$amount;
if($_POST['product'] == ""){
$errors[] = 'The product field is required!';
}else{
$product = $_POST['product'];
}
if($_POST['admin'] == ""){
$errors[] = 'The admin field is required!';
}else{
$admin = $_POST['admin'];
}
if($_POST['record'] == ""){
$errors[] = 'The field record is required';
}else{
$record = $_POST['record'];
}
if(empty($_POST['amount'])){
$errors[] = 'The field amount is required';
}else{
$amount = $_POST['amount'];
}
if(empty($erros)){
$query = "select SUM(ret.amount) AS amount,
ret.product_name,
ret.id_product
from(SELECT
SUM(p.amount) AS AMOUNT,
p.record_type,
p.id_product,
c.name AS name_product,
c.image
FROM stock p JOIN administrator u
ON u.id_admin = p.id_admin
JOIN register_products c
ON c.id_product = p.id_product
WHERE p.record_type = 'input'
GROUP BY
p.record_type,
p.id_product,
c.name,
c.image
UNION
SELECT
-SUM(p.amount) AS AMOUNT,
p.record_type,
p.id_product,
c.name AS name_product,
c.imagem
FROM stock p JOIN administrator u
ON u.id_admin = p.id_admin
JOIN register_products c
ON c.id_product = p.id_product
WHERE p.record_type = 'output'
GROUP BY
p.record_type,
p.id_product,
c.name,
c.image)ret
WHERE ret.id_product = $product
group by ret.name_product,
ret.id_product";
$result = @mysqli_query($dbc, $query);
$row = mysqli_fetch_array($result);
$amount_db = $row['amount'];
if($amount_db >= $amount || mysqli_num_rows($result) == 0){
$query = "INSERT INTO stock(id_stock, amount, record_type, id_admin, id_product, dt_drive) VALUES (NULL, $amount,'$record', '$admin' ,'$product',CURRENT_TIMESTAMP)";
$result = @mysqli_query($dbc, $query);
if($result){
$returnn[] = 'successfully completed registration';
}else{
$errors[] = 'Some error occured while registering the stock!';
}
}else{
//stock error
echo"<script>alert('Value Exceeds amount in stock'); history.go(-1)</script>";
}
}else{
$return = $errors;
}
return $returnn;
}?>
multiprocessing.Process