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Typing (cemerick.austin/repl-env) in Clojure REPL causes OutOfMemoryError #39

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ivan opened this issue Jan 17, 2014 · 9 comments
Closed

Typing (cemerick.austin/repl-env) in Clojure REPL causes OutOfMemoryError #39

ivan opened this issue Jan 17, 2014 · 9 comments

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@ivan
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ivan commented Jan 17, 2014

Example session: https://www.refheap.com/7d37150b0fbe017920682f9ee/raw

It took me some time to figure out that the problem was caused by the printing of the object, not due to some problem with the repl-env itself.

Not sure if this deserves some kind of warning in the README or a fix to not try to print an infinite amount of text.

If this does not reproduce on your machine, try this on Ubuntu 13.10

git clone https://github.com/ludios/reworld
cd reworld
git checkout 1483b1a6350ef2c950cf2447d940ad308a273b2c
lein repl
(cemerick.austin/repl-env)
@ivan
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ivan commented Jan 18, 2014

jvisualvm shows one thread doing this:

"nREPL-worker-2" #19 daemon prio=5 os_prio=0 tid=0x00007fd78806e000 nid=0x380c runnable [0x00007fd7b0be8000]
java.lang.Thread.State: RUNNABLE
    at clojure.core$meta.invoke(core.clj:205)
    at clojure.core$print_meta.invoke(core_print.clj:65)
    at clojure.core$print_simple.invoke(core_print.clj:127)
    at clojure.core$fn__5398.invoke(core_print.clj:131)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5406.invoke(core_print.clj:143)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5426.invoke(core_print.clj:194)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5426.invoke(core_print.clj:194)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5426.invoke(core_print.clj:194)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5426.invoke(core_print.clj:194)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5406.invoke(core_print.clj:143)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5426.invoke(core_print.clj:194)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5406.invoke(core_print.clj:143)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5431.invoke(core_print.clj:207)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$fn__5497.invoke(core_print.clj:383)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$print_map$fn__5428.invoke(core_print.clj:200)
    at clojure.core$print_sequential.invoke(core_print.clj:58)
    at clojure.core$print_map.invoke(core_print.clj:203)
    at clojure.core$fn__5449.invoke(core_print.clj:260)
    at clojure.lang.MultiFn.invoke(MultiFn.java:231)
    at clojure.core$pr_on.invoke(core.clj:3322)
    at clojure.core$pr.invoke(core.clj:3334)
    at clojure.tools.nrepl.middleware.pr_values$pr_values$fn$reify__570$fn__572.invoke(pr_values.clj:23)
    at clojure.tools.nrepl.middleware.pr_values$pr_values$fn$reify__570.send(pr_values.clj:23)
    at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__591$fn__602.invoke(interruptible_eval.clj:67)
    at clojure.main$repl$read_eval_print__6588.invoke(main.clj:260)
    at clojure.main$repl$fn__6597.invoke(main.clj:277)
    at clojure.main$repl.doInvoke(main.clj:277)
    at clojure.lang.RestFn.invoke(RestFn.java:1096)
    at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__591.invoke(interruptible_eval.clj:56)
    at clojure.lang.AFn.applyToHelper(AFn.java:159)
    at clojure.lang.AFn.applyTo(AFn.java:151)
    at clojure.core$apply.invoke(core.clj:617)
    at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1788)
    at clojure.lang.RestFn.invoke(RestFn.java:425)
    at clojure.tools.nrepl.middleware.interruptible_eval$evaluate.invoke(interruptible_eval.clj:41)
    at clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__632$fn__635.invoke(interruptible_eval.clj:171)
    at clojure.core$comp$fn__4154.invoke(core.clj:2330)
    at clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__625.invoke(interruptible_eval.clj:138)
    at clojure.lang.AFn.run(AFn.java:24)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:744)

Locked ownable synchronizers:
    - <0x0000000081253778> (a java.util.concurrent.ThreadPoolExecutor$Worker)

@ivan
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ivan commented Jan 18, 2014

Looks like the env/*compiler* is unprintable; specifically, the value for the :cljs.analyzer/namespaces key in it.

@ivan
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ivan commented Jan 18, 2014

Some additional debugging info for tracking down the possible ClojureScript problem

user=> (require '[clojure.java.io :refer [writer]])
nil
user=> (def defs (:defs ('cljs.core (:cljs.analyzer/namespaces @(:cljs.env/compiler (cemerick.austin/repl-env))))))
Browser-REPL ready @ http://localhost:52620/4703/repl/start
#'user/defs
user=> (def w (writer "/tmp/cycle"))
#'user/w
user=> (binding [*out* w] (doseq [k defs] (prn k)))
[hit ctrl-c to stop]

I see it looping forever trying to print info about an autogenerated symbol ->t9461, in my case https://www.refheap.com/0361fd0b3d226feb946076d98/raw

@dparoulek
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In case it's helpful: When I use [org.clojure/clojurescript "0.0-2030"], then (cemerick.austin/repl-env) works fine. But when I use [org.clojure/clojurescript "0.0-2134"], I also see a Java Heap Space OutOfMemory error.

@cemerick
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256MB is the recommended heap size when doing ClojureScript compilation; that's likely overkill, but should resolve any OutOfMemoryErrors encountered when using Austin. Add :jvm-opts ["-Xmx256m"] to your project.clj.

@dparoulek
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When I switch to 2134, I can still run lein cljsbuild once and lein trampoline cljsbuild auto so I don't think it's a compilation issue.

The OutOfMemory error happens when I try to eval (cemerick.austin/repl-env).

With max heap size set to 256, I get OutOfMemoryError. When I set max heap size to 1024 I have to wait a bit longer, but I still see the OutOfMemoryError.

I can consistently reproduce this by creating a project:

lein new replenv

And then use the project.clj here (and also pasted an example of a repl session):
https://gist.github.com/dparoulek/8919700

I'm using a new mac book pro, with jdk1.6.0_65.

I'm pretty new to clojurescript so I definitely might be overlooking something obvious, but seems to be an issue between newer clojurescript versions and austin, maybe? Please let me know if I can help by sending more info or testing with different versions.

repl-env works great with v2030 and it's so much fun to do live coding and see it show up in the browser! Thanks again!

Dave

@cemerick
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Try binding the REPL environment to a var to prevent it from printing, e.g. (def env (cemerick.austin/repl-env)).

I'm using 2156 at the moment, which works well. Give that a shot.

@dparoulek
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New it must be something simple. That worked, thanks!

@cursork
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cursork commented Aug 19, 2014

It seems fairly easy to accidentally print a repl-env? It has happened a few times for me and is something I tend to forget that I shouldn't do.

I'm currently using this as a work-around:

(defmethod print-method cemerick.austin.BrowserEnv
  [b w]
  (.write w (str "#<BrowserEnv " b ">")))

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@ivan @cemerick @dparoulek @cursork