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* child_info.h (cygheap_exec_info::sigmask): Declare new field.

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* cygheap.cc (init_cygheap::find_tls): Rename threadlist_ix -> ix.  Only take
one pass through thread list, looking for eligible threads to signal.  Set a
new param indicating that function has found a sigwait* mask.
* cygheap.h (init_cygheap::find_tls): Reflect new parameter.
* dcrt0.cc (parent_sigmask): New variable.
(child_info_spawn::handle_spawn): Save parent's signal mask here.
(dll_crt0_1): Restore parent's signal mask to tls sigmask as appropriate.  Call
sig_dispatch_pending to flush signal queue when we can finally do something
with signals.
* exceptions.cc (sigpacket::process): Avoid attempting to handle signals if we
haven't finished initializing.  Rely on the fact that find_tls will do mask
checking and don't do it again.  Delete ill-named 'dummy' variable.
* sigproc.cc (cygheap_exec_info::alloc): Save calling thread's signal mask in
new sigmask field.
(wait_sig): Try to debug when WFSO fails and DEBUGGING is defined.
* thread.cc (pthread::set_tls_self_pointer): Make this a true automatic method
rather than inexplicably relying on a thread parameter.
(pthread::thread_init_wrapper): Accommodate set_tls_self_pointer change to
non-static.  Initialize sigmask before setting tid or suffer signal races.
* ehread.h (pthread::set_tls_self_pointer): Make non-static, delete parameter.
This commit is contained in:
Christopher Faylor
2013-03-31 12:35:44 +00:00
parent 4332090c2d
commit 8f8eeb70ba
10 changed files with 111 additions and 62 deletions
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17
winsup/cygwin/sigproc.cc
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@@ -835,9 +835,12 @@ child_info_spawn::child_info_spawn (child_info_types chtype, bool need_subproc_r
cygheap_exec_info *
cygheap_exec_info::alloc ()
{
return (cygheap_exec_info *) ccalloc_abort (HEAP_1_EXEC, 1,
sizeof (cygheap_exec_info)
+ (nprocs * sizeof (children[0])));
cygheap_exec_info *res =
(cygheap_exec_info *) ccalloc_abort (HEAP_1_EXEC, 1,
sizeof (cygheap_exec_info)
+ (nprocs * sizeof (children[0])));
res->sigmask = _my_tls.sigmask;
return res;
}
void
@@ -1237,7 +1240,6 @@ pending_signals::add (sigpacket& pack)
if (se->si.si_signo)
return;
*se = pack;
se->mask = &pack.sigtls->sigmask;
se->next = NULL;
if (end)
end->next = se;
@@ -1365,7 +1367,12 @@ wait_sig (VOID *)
lock_process::force_release (pack.sigtls);
ForceCloseHandle1 (h, exit_thread);
if (res != WAIT_OBJECT_0)
system_printf ("WaitForSingleObject(%p) for thread exit returned %u", h, res);
{
#ifdef DEBUGGING
try_to_debug();
#endif
system_printf ("WaitForSingleObject(%p) for thread exit returned %u", h, res);
}
}
break;
}