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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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14
winsup/cygwin/thread.cc
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@@ -338,7 +338,7 @@ pthread::init_mainthread ()
api_fatal ("failed to create mainthread object");
}
set_tls_self_pointer (thread);
thread->set_tls_self_pointer ();
thread->thread_id = GetCurrentThreadId ();
if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
GetCurrentProcess (), &thread->win32_obj_id,
@@ -357,16 +357,16 @@ pthread::self ()
if (!thread)
{
thread = pthread_null::get_null_pthread ();
set_tls_self_pointer (thread);
thread->set_tls_self_pointer ();
}
return thread;
}
void
pthread::set_tls_self_pointer (pthread *thread)
pthread::set_tls_self_pointer ()
{
thread->cygtls = &_my_tls;
_my_tls.tid = thread;
cygtls = &_my_tls;
_my_tls.tid = this;
}
List<pthread> pthread::threads;
@@ -1912,14 +1912,14 @@ DWORD WINAPI
pthread::thread_init_wrapper (void *arg)
{
pthread *thread = (pthread *) arg;
set_tls_self_pointer (thread);
_my_tls.sigmask = thread->parent_sigmask;
thread->set_tls_self_pointer ();
thread->mutex.lock ();
// if thread is detached force cleanup on exit
if (thread->attr.joinable == PTHREAD_CREATE_DETACHED && thread->joiner == NULL)
thread->joiner = thread;
_my_tls.sigmask = thread->parent_sigmask;
thread->mutex.unlock ();
debug_printf ("tid %p", &_my_tls);