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--!A cross-platform build utility based on Lua
--
-- Licensed 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-present, TBOOX Open Source Group.
--
-- @author ruki
-- @file jobpool.lua
--
-- imports
import("core.base.object")
import("core.base.hashset")
-- define module
local jobpool = jobpool or object {_init = {"_size", "_rootjob", "_leafjobs"}}
-- get jobs size
function jobpool:size()
return self._size
end
-- get root job
function jobpool:rootjob()
return self._rootjob
end
-- add run job to the given job node
--
-- @param name the job name
-- @param run the run command/script
-- @param opt the options (rootjob)
--
function jobpool:addjob(name, run, opt)
opt = opt or {}
return self:add({name = name, run = run}, opt.rootjob)
end
-- add job to the given job node
--
-- @param job the job
-- @param rootjob the root job node (optional)
--
function jobpool:add(job, rootjob)
-- add job to the root job
rootjob = rootjob or self:rootjob()
rootjob._deps = rootjob._deps or hashset.new()
rootjob._deps:insert(job)
-- attach parents node
local parents = job._parents
if not parents then
parents = {}
job._parents = parents
self._size = self._size + 1 -- @note only update number for new job without parents
end
table.insert(parents, rootjob)
-- in group? attach the group node
local group = self._group
if group then
job._deps = job._deps or hashset.new()
job._deps:insert(group)
group._parents = group._parents or {}
table.insert(group._parents, job)
end
return job
end
-- pop job without deps at leaf node
function jobpool:pop()
-- no jobs?
if self:size() == 0 then
return
end
-- init leaf jobs first
local leafjobs = self._leafjobs
if #leafjobs == 0 then
local refs = {}
self:_genleafjobs(self:rootjob(), leafjobs, refs)
end
-- pop a job from the leaf jobs
if #leafjobs > 0 then
-- get job
local job = leafjobs[#leafjobs]
table.remove(leafjobs, #leafjobs)
-- get priority and parents node
local priority = job._priority or 0
local parents = assert(job._parents, "invalid job without parents node!")
-- update all parents nodes
for _, p in ipairs(parents) do
p._priority = math.max(p._priority or 0, priority + 1)
p._deps:remove(job)
if p._deps:empty() and self._size > 0 then
table.insert(leafjobs, 1, p)
end
end
-- is group node?
if job.group then
-- pop the next real job
return self:pop()
else
-- pop this job
self._size = self._size - 1
return job, priority
end
end
end
-- enter group
--
-- @param name the group name
--
function jobpool:group_enter(name)
assert(not self._group, "jobpool: cannot enter group(%s)!", name)
self._group = {name = name, group = true}
end
-- leave group
--
-- @return the group node
--
function jobpool:group_leave()
local group = self._group
self._group = nil
if group and group._parents then
return group
end
end
-- generate all leaf jobs from the given job
function jobpool:_genleafjobs(job, leafjobs, refs)
local deps = job._deps
if deps and not deps:empty() then
for _, dep in deps:keys() do
local depkey = tostring(dep)
if not refs[depkey] then
refs[depkey] = true
self:_genleafjobs(dep, leafjobs, refs)
end
end
else
table.insert(leafjobs, job)
end
end
-- generate jobs tree for the given job
function jobpool:_gentree(job, refs)
local tree = {job.group and ("group(" .. job.name .. ")") or job.name}
local deps = job._deps
if deps and not deps:empty() then
for _, dep in deps:keys() do
local depkey = tostring(dep)
if refs[depkey] then
local depname = dep.group and ("group(" .. dep.name .. ")") or dep.name
table.insert(tree, "ref(" .. depname .. ")")
else
refs[depkey] = true
table.insert(tree, self:_gentree(dep, refs))
end
end
end
-- strip tree
local smalltree = hashset.new()
for _, item in ipairs(tree) do
item = table.unwrap(item)
if smalltree:size() < 16 or type(item) == "table" then
smalltree:insert(item)
else
smalltree:insert("...")
end
end
return smalltree:to_array()
end
-- tostring
function jobpool:__tostring()
local refs = {}
return string.serialize(self:_gentree(self:rootjob(), refs), {indent = 2})
end
-- new a jobpool
function new()
return jobpool {0, {name = "root"}, {}}
end
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