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|
--!The Make-like Build Utility based on Lua
--
-- Licensed to the Apache Software Foundation (ASF) under one
-- or more contributor license agreements. See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership. The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015 - 2017, TBOOX Open Source Group.
--
-- @author ruki
-- @file process.lua
--
-- define module: process
local process = process or {}
-- load modules
local utils = require("base/utils")
local string = require("base/string")
local coroutine = require("base/coroutine")
-- async run task and echo waiting info
function process.asyncrun(task, waitchars)
-- create a coroutine task
task = coroutine.create(task)
-- trace
local waitindex = 0
local waitchars = waitchars or {'\\', '|', '/', '-'}
utils.printf(waitchars[waitindex + 1])
-- start and wait this task
local ok, errors = coroutine.resume(task)
if not ok then
-- remove wait charactor
utils.printf("\b")
-- failed
return false, errors
end
-- wait and poll task
while coroutine.status(task) ~= "dead" do
-- trace
waitindex = ((waitindex + 1) % #waitchars)
utils.printf("\b" .. waitchars[waitindex + 1])
-- wait some time
os.sleep(300)
-- continue to poll this task
local ok, errors = coroutine.resume(task, 0)
if not ok then
-- remove wait charactor
utils.printf("\b")
-- failed
return false, errors
end
end
-- remove wait charactor
utils.printf("\b")
-- ok
return true
end
-- run jobs with processes
function process.runjobs(jobfunc, total, comax, timeout, timer)
-- init max coroutine count
comax = comax or total
-- init timeout
timeout = timeout or -1
-- make objects
local index = 1
local tasks = {}
local procs = {}
local indices = {}
local time = os.mclock()
repeat
-- wait processes
local tasks_finished = {}
local procs_count = #procs
if procs_count > 0 then
-- wait them
local count, procinfos = process.waitlist(procs, utils.ifelse(procs_count < comax and index <= total, 0, timeout))
if count < 0 then
return false, string.format("wait processes(%d) failed(%d)", #procs, count)
end
-- timer is triggered? call timer
if timer and os.mclock() - time > timeout then
timer(indices)
time = os.mclock()
end
-- wait ok
for _, procinfo in ipairs(procinfos) do
-- the process info
local proc = procinfo[1]
local procid = procinfo[2]
local status = procinfo[3]
-- check
assert(procs[procid] == proc)
-- resume this task
local job_task = tasks[procid]
local ok, job_proc_or_errors = coroutine.resume(job_task, 1, status)
if not ok then
return false, job_proc_or_errors
end
-- the other process is pending for this task?
if coroutine.status(job_task) ~= "dead" then
-- check
assert(job_proc_or_errors)
-- update the pending process
procs[procid] = job_proc_or_errors
-- this task has been finised?
else
-- mark this task as finised
tasks_finished[procid] = true
end
end
end
-- update the pending tasks and procs
local tasks_pending = {}
local procs_pending = {}
local indices_pending = {}
for taskid, job_task in ipairs(tasks) do
if not tasks_finished[taskid] then
table.insert(tasks_pending, job_task)
table.insert(procs_pending, procs[taskid])
table.insert(indices_pending, indices[taskid])
end
end
tasks = tasks_pending
procs = procs_pending
indices = indices_pending
-- produce tasks
while #tasks < comax and index <= total do
-- new task
local job_task = coroutine.create(jobfunc)
-- resume it first
local ok, job_proc_or_errors = coroutine.resume(job_task, index)
if not ok then
return false, job_proc_or_errors
end
-- add pending tasks
if coroutine.status(job_task) ~= "dead" then
-- check
assert(job_proc_or_errors)
-- put task and proc to the pendings tasks
table.insert(tasks, job_task)
table.insert(procs, job_proc_or_errors)
table.insert(indices, index)
end
-- next index
index = index + 1
end
until #tasks == 0
-- ok
return true
end
-- return module: process
return process
|
