Getting Clojure Stacktrace

Question

I am aware of http://richhickey.github.com/clojure/clojure.stacktrace-api.html .

Is there a way to get the current stacktrace w/o throwing an exception and catching it?

(I'm debugging a piece of code, and want to capture stacktraces at certain points so I can analyze what's going on.)

Thanks!

See http://stackoverflow.com/questions/944991/is-there-a-way-to-dump-a-stack-trace-without-throwing-an-exception-in-java — user100464, May 10 '12 at 11:11
So basically: either create your own exception, or call a function which creates its own exception? I didn't realize exceptions were such low level / inexpensive primitives. I thought surely there must be some overheat that can be eliminated if I just want the stacktrace. — user1383359, May 10 '12 at 19:00

score 8 · Accepted Answer · answered May 10 '12 at 07:29

use clojure.repl.pst

user=> (try (/ 1 0) (catch Exception e (pst e)))
ArithmeticException Divide by zero
    clojure.lang.Numbers.divide (Numbers.java:156)
    clojure.lang.Numbers.divide (Numbers.java:3691)
    user/eval28 (NO_SOURCE_FILE:8)
    clojure.lang.Compiler.eval (Compiler.java:6511)
    clojure.lang.Compiler.eval (Compiler.java:6477)
    clojure.core/eval (core.clj:2797)
    clojure.main/repl/read-eval-print--6569 (main.clj:245)
    clojure.main/repl/fn--6574 (main.clj:266)
    clojure.main/repl (main.clj:266)
    clojure.main/repl-opt (main.clj:332)
    clojure.main/main (main.clj:427)
    clojure.lang.Var.invoke (Var.java:423)

BTW: pst print stack trace to `*err*` – number23_cn May 11 '12 at 13:08 — number23_cn, May 11 '12 at 13:08

score 1 · Answer 2 · edited May 23 '17 at 12:31

1

This code return StackTraceElement array which is not so hard to turn in readable form:

(.getStackTrace (Thread/currentThread))

edited May 23 '17 at 12:31

Community

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answered Apr 09 '13 at 12:56

om-nom-nom

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Getting Clojure Stacktrace

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