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* DevNotes: Add entry cgf-000019.

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* dcrt0.cc (do_exit): Just set exit_state to ES_EVENTS_TERMINATE and nuke call
to events_terminate which just set a superfluous flag.
* sigproc.cc (signal_exit_code): New variable.
(setup_signal_exit): Define new function.
(_cygtls::signal_exit): Remove accommodations for closing the signal pipe
handle.
(exit_thread): Just sleep if we're exiting.
(wait_sig): If signal_exit_code is set, just handle bookkeeping signals and
exit ReadFile loop if there is nothing more to process.  Call signal_exit at
end if signal_exit_code is non-zero.
* sigproc.h (setup_signal_exit): Declare new function.
* exceptions.cc (sigpacket::process): Use setup_signal_exit to control exiting
due to a signal.
(exception::handle): Ditto.  Query exit_state rather than defunct exit_already
to determine if we are exiting.
* globals.cc (ES_SIGNAL_EXIT): New enum.
* sync.h (lock_process::release): New function for explicitly unlocking muto.
(lock_process::~lock_process): Use release method.
This commit is contained in:
Christopher Faylor
2012-12-28 18:06:17 +00:00
parent 81f1868336
commit 871d0724fa
8 changed files with 117 additions and 43 deletions
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19
winsup/cygwin/exceptions.cc
View File

@ -41,8 +41,6 @@ static BOOL WINAPI ctrl_c_handler (DWORD);
/* This is set to indicate that we have already exited. */
static NO_COPY int exit_already = 0;
NO_COPY static struct
{
unsigned int code;
@ -481,9 +479,9 @@ exception::handle (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT *in, void
return 0;
}
/* If we've already exited, don't do anything here. Returning 1
/* If we're exiting, don't do anything here. Returning 1
tells Windows to keep looking for an exception handler. */
if (exit_already || e->ExceptionFlags)
if (exit_state || e->ExceptionFlags)
return 1;
siginfo_t si = {0};
@ -673,8 +671,7 @@ exception::handle (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT *in, void
error_code);
}
/* Flag signal + core dump */
me.signal_exit ((cygheap->rlim_core > 0UL ? 0x80 : 0) | si.si_signo);
setup_signal_exit ((cygheap->rlim_core > 0UL ? 0x80 : 0) | si.si_signo);
}
si.si_addr = (si.si_signo == SIGSEGV || si.si_signo == SIGBUS
@ -1249,13 +1246,9 @@ done:
return rc;
exit_sig:
tls->signal_exit (si.si_signo); /* never returns */
}
void
events_terminate ()
{
exit_already = 1;
sigproc_printf ("setting up for exit with signal %d", si.si_signo);
setup_signal_exit (si.si_signo);
return rc;
}
int