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* thread.c (ruby_thread_stack_overflow): call rb_exc_raise() on

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stack overflows in the signal handler, if sigaltstack is
  available.  On stack overflow (and with sigaltstack), the signal
  handler is more likely to have room to create an exception
  object.  [ruby-core:23813]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23720 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2009-06-17 03:56:29 +00:00
parent 39a770b720
commit 945ea61cd7
2 changed files with 18 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Wed Jun 17 12:37:37 2009 Yukihiro Matsumoto <matz@ruby-lang.org>
* thread.c (ruby_thread_stack_overflow): call rb_exc_raise() on
stack overflows in the signal handler, if sigaltstack is
available. On stack overflow (and with sigaltstack), the signal
handler is more likely to have room to create an exception
object. [ruby-core:23813]
Wed Jun 17 08:10:38 2009 Koichi Sasada <ko1@atdot.net> Wed Jun 17 08:10:38 2009 Koichi Sasada <ko1@atdot.net>
* ext/objspace: added. objspace library extends some methods to * ext/objspace: added. objspace library extends some methods to

11
thread.c
View File

@ -1300,12 +1300,21 @@ rb_threadptr_signal_exit(rb_thread_t *th)
rb_threadptr_raise(th->vm->main_thread, 2, argv); rb_threadptr_raise(th->vm->main_thread, 2, argv);
} }
#if defined(POSIX_SIGNAL) && defined(SIGSEGV) && defined(HAVE_SIGALTSTACK)
#define USE_SIGALTSTACK
#endif
void void
ruby_thread_stack_overflow(rb_thread_t *th) ruby_thread_stack_overflow(rb_thread_t *th)
{ {
th->errinfo = sysstack_error;
th->raised_flag = 0; th->raised_flag = 0;
#ifdef USE_SIGALTSTACK
th->raised_flag = 0;
rb_exc_raise(sysstack_error);
#else
th->errinfo = sysstack_error;
TH_JUMP_TAG(th, TAG_RAISE); TH_JUMP_TAG(th, TAG_RAISE);
#endif
} }
int int