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Re: [rfa] Assume thread-db loaded over a live process


Daniel Jacobowitz wrote:
On Mon, Sep 13, 2004 at 10:51:39PM +0000, Michael Snyder wrote:

Andrew Cagney wrote:

Andrew Cagney wrote:


Hello,

This patch changes:

-      /* We can only poke around if there actually is a child process.
-         If there is no child process alive, postpone the steps below
-         until one has been created.  */
-      if (proc_handle.pid != 0)
-       {
-         enable_thread_event_reporting ();
-         thread_db_find_new_threads ();
-       }
+      enable_thread_event_reporting ();
+      thread_db_find_new_threads ();

this code is only executed when there is a child process so the guard isn't needed. Tested on GNU/Linux, no change in test results.

ok?



From memory, I think this code was to guard against the corefile case.

When you load a corefile, you may call thread_db_new_objfile, but
you won't have a child process.  Is that no longer the case?  Does
loading a corefile no longer cause this function to be called?


This code is only executed when there is a child process. As you note, when loading a core file there is no child process (and as daniel pointed out, !target_has_execution holds) so this code is not executed.

That's what I don't understand, Andrew. This code *used to* get called for a corefile. What's changed? As far as I can see, it will get called from symbol_file_add. In my existing July build, it does.


Um, is that July of _this_ year?  There's a !target_has_execution check
up above it.

Ah. OK. I only checked to see if the function was called. Now I see that this code doesn't get reached.

OK, sorry for the confusion -- the change looks fine to me.


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