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|
use std
use "config"
use "opts"
use "types"
use "util"
pkg bld =
const buildtarg : (b : build#, targ : byte[:] -> bool)
const clean : (b : build# -> bool)
;;
const buildtarg = {b, targ
var g, targs
g = b.deps
match std.htget(g.targs, targ)
| `std.Some t: targs = t
| `std.None: std.fatal("unknown target: {}\n", targ)
;;
for t : targs
mark(b, t)
;;
build(b, g)
-> !b.fail
}
const clean = {b
for n : b.deps.nodes
if n.durable
continue
;;
for g : n.gen
if std.remove(g)
mbldput("\tclean {}\n", g)
;;
;;
;;
-> true
}
const mark = {b, o
if o.want
-> void
;;
o.want = true
for n : o.ndep
mark(b, n)
;;
}
const build = {b, g
for n : g.leaves
if n.want
/* stale() updates the mtime of the leaf node */
stale(b, n)
unblock(b, n)
;;
;;
while std.htcount(b.proc) != 0 || b.queue.len != 0
while std.htcount(b.proc) < opt_maxproc && b.queue.len > 0
launch(b, std.slpop(&b.queue))
;;
wait(b)
;;
}
const launch = {b, n
var pid
if stale(b, n)
mkout(n)
pid = run(n.cmd, "")
std.htput(b.proc, pid, n)
else
unblock(b, n)
;;
}
const wait = {b
var pp : std.pid
if std.htcount(b.proc) == 0
-> void
;;
match std.waitany()
| (p, `std.Wfailure): fail(b, p, "FAIL")
| (p, `std.Wsignalled): fail(b, p, "CRASH")
| (p, `std.Waiterror): std.fatal("error waiting: nproc={}\n", std.htcount(b.proc))
| (p, `std.Wsuccess):
pp = p
match std.htget(b.proc, p)
| `std.None:
std.fatal("followed home by stray pid {}\n", p)
| `std.Some n:
n.mtime = std.now()
std.htdel(b.proc, p)
unblock(b, n)
;;
;;
}
const proclbl = {b, pid
match std.htget(b.proc, pid)
| `std.Some n: -> n.cmd
| `std.None: -> std.sldup(["?unknown?"][:])
;;
}
const unblock = {b, n
if b.fail
-> void
;;
for g : n.ngen
std.assert(g.nblock != 0, "bogus unblock {} from {}\n", g.lbl, n.lbl)
g.nblock--
if g.nblock == 0 && g.want
std.slpush(&b.queue, g)
;;
;;
}
const stale = {b, n
var staletime
staletime = 0
for d : n.ndep
staletime = std.max(staletime, d.mtime)
;;
n.mtime = std.now()
for g : n.gen
match std.fmtime(g)
| `std.Ok tm: n.mtime = std.min(n.mtime, tm)
| `std.Err e: n.mtime = 0
;;
;;
-> staletime > n.mtime
}
const mkout = {n
for g : n.gen
std.mkpath(std.dirname(g))
;;
}
const fail = {b, pid, failtype
std.fput(std.Err, "{}: {j= }\n", failtype, proclbl(b, pid))
std.htdel(b.proc, pid)
std.slfree(b.queue)
b.queue = [][:]
b.fail = true
}
|
