libc/1427: gprof does not profile threads

DISCUSSION Dan Kegel 1 participant 1 message Mar 16, 2002

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Dan Kegel

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2002-03-16 04:10 UTC #0 lore raw

Quoted 13 lines · Ulrich Drepper

Quoted 5 lines · Dan Kegel
Quoted 2 lines
Ulrich, do you at least agree that it would be desirable for gprof to work properly on multithreaded programs?
No. gprof is uselss in today world.
Then why not change sysdeps/generic/initfini.c with something like:
(quoted diff) +1 -1
-      if (gmon_start)
+      if (gmon_start && __pthread_initialize_minimal)
          gmon_start ();

Quoted 1 line

So it doesn't even try when threading?

I believe Ulrich's proposed fix would be

Review

Quoted 3 lines

(quoted diff) +1 -1

-      if (gmon_start)
+      if (gmon_start && 0)
          gmon_start ();

as he did not distinguish between threaded and nonthreaded programs when he said gprof was useless.

- Dan