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process.c: try to workaroun SEGV by r65994

Browse source 
http://ci.rvm.jp/results/trunk-mjit-wait@silicon-docker/1480173

It tries to print C backtrace but fails. And core file on the server
seems to be stopping on the irrelevant place due to its own signal
handler for the dump.

And I failed to reproduce this SEGV on my machine.

I don't know why it's broken, so let me try this change to investigate
the reason of SEGV.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
k0kubun 2018-11-26 14:45:39 +00:00
parent c8c265f42a
commit 0e6aba22c6
4 changed files with 35 additions and 16 deletions
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37
mjit.c
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@ -785,6 +785,29 @@ mjit_child_after_fork(void)
start_worker();
}
/* Half-baked version of mjit_finish(). It just deletes MJIT-related files.
Caller should disable MJIT because it won't work without the deleted files.
We want to use mjit_finish() for this function's usage but it's somehow broken like:
http://ci.rvm.jp/results/trunk-mjit-wait@silicon-docker/1480173 */
void
mjit_clean_files(void)
{
#ifndef _MSC_VER /* mswin has prebuilt precompiled header */
if (!mjit_opts.save_temps && getpid() == pch_owner_pid)
remove_file(pch_file);
xfree(header_file); header_file = NULL;
#endif
xfree(tmp_dir); tmp_dir = NULL;
xfree(pch_file); pch_file = NULL;
mjit_call_p = FALSE;
free_list(&unit_queue);
free_list(&active_units);
free_list(&compact_units);
}
/* Finish the threads processing units and creating PCH, finalize
and free MJIT data. It should be called last during MJIT
life. */
@ -817,19 +840,7 @@ mjit_finish(void)
rb_native_cond_destroy(&mjit_worker_wakeup);
rb_native_cond_destroy(&mjit_gc_wakeup);
#ifndef _MSC_VER /* mswin has prebuilt precompiled header */
if (!mjit_opts.save_temps && getpid() == pch_owner_pid)
remove_file(pch_file);
xfree(header_file); header_file = NULL;
#endif
xfree(tmp_dir); tmp_dir = NULL;
xfree(pch_file); pch_file = NULL;
mjit_call_p = FALSE;
free_list(&unit_queue);
free_list(&active_units);
free_list(&compact_units);
mjit_clean_files();
finish_conts();
mjit_enabled = FALSE;