1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
--!A cross-platform 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 - 2018, 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])
io.flush()
-- start and wait this task
local ok, errors = coroutine.resume(task)
if not ok then
-- remove wait charactor
utils.printf("\b")
io.flush()
-- 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])
io.flush()
-- 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")
io.flush()
-- failed
return false, errors
end
end
-- remove wait charactor
utils.printf("\b")
io.flush()
-- 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
local procs_infos = nil
if procs_count > 0 then
local count = -1
count, procs_infos = process.waitlist(procs, utils.ifelse(#tasks < comax and index <= total, 0, timeout))
if count < 0 then
return false, string.format("wait processes(%d) failed(%d)", #procs, count)
end
end
-- timer is triggered? call timer
if timer and os.mclock() - time > timeout then
timer(indices)
time = os.mclock()
end
-- append fake procs_infos for coroutine.yield()
procs_infos = procs_infos or {}
for taskid = #procs + 1, #tasks do
table.insert(procs_infos, {nil, taskid, 0})
end
-- wait ok
for _, procinfo in ipairs(procs_infos) do
-- the process info
local proc = procinfo[1]
local taskid = procinfo[2]
local status = procinfo[3]
-- check
assert(procs[taskid] == proc)
-- resume this task
local job_task = tasks[taskid]
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
procs[taskid] = job_proc_or_errors
else
-- mark this task as finished?
tasks_finished[taskid] = true
end
end
-- update the pending tasks and procs
local tasks_pending1 = {}
local procs_pending1 = {}
local indices_pending1 = {}
local tasks_pending2 = {}
local indices_pending2 = {}
for taskid, job_task in ipairs(tasks) do
if not tasks_finished[taskid] and procs[taskid] ~= nil then -- for coroutine.yield(proc) in os.execv
table.insert(tasks_pending1, job_task)
table.insert(procs_pending1, procs[taskid])
table.insert(indices_pending1, indices[taskid])
end
end
for taskid, job_task in ipairs(tasks) do
if not tasks_finished[taskid] and procs[taskid] == nil then -- for coroutine.yield()
table.insert(tasks_pending2, job_task)
table.insert(indices_pending2, indices[taskid])
end
end
-- produce tasks
while (#tasks_pending1 + #tasks_pending2) < 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
if job_proc_or_errors ~= nil then -- for coroutine.yield(proc) in os.execv
table.insert(tasks_pending1, job_task)
table.insert(procs_pending1, job_proc_or_errors)
table.insert(indices_pending1, index)
else
table.insert(tasks_pending2, job_task)
table.insert(indices_pending2, index)
end
end
-- next index
index = index + 1
end
-- merge pending tasks
procs = procs_pending1
tasks = table.join(tasks_pending1, tasks_pending2)
indices = table.join(indices_pending1, indices_pending2)
until #tasks == 0
-- ok
return true
end
-- return module: process
return process
|
