public inbox for goredo-devel@lists.cypherpunks.ru
Atom feed
From: goredo <spacefrogg-goredo@spacefrogg•net>
To: goredo-devel@lists.cypherpunks.ru
Subject: Redo targets built twice during single run
Date: Tue, 26 Oct 2021 09:21:35 +0000 (UTC)	[thread overview]
Message-ID: <b44af078-d6cc-422a-b8eb-a73648146d4f@spacefrogg.net> (raw)

Hi,

I had the feeling for some time that some targets get built a second time during a single run and now I've found an MWE. You need the following dependency graph:
- lvl1: lvl3 lvl2
  - lvl2: lvl3
    - lvl3

As you can see, lvl1 and lvl2 both depend on lvl3. The bug is triggered, when the arguments to redo-ifchange in lvl1 are as shown above, with lvl3 coming before lvl2. Then, redo misses to communicate that it has already built the dependency of lvl2 and lvl3 gets built a second time.

```
Level 3 executed
redo . lvl3 (0.003s)
Level 3 executed
redo . . lvl3 (0.003s)
redo . lvl2 (0.014s)
redo lvl1 (0.038s)
```

This only happens when redo is run with -j 1.

Kind regards,
–Michael

             reply	other threads:[~2021-10-26  9:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-26  9:21 goredo [this message]
2021-10-27  7:32 ` Redo targets built twice during single run Sergey Matveev