* cygwin/include/signal.h: Add copyright notice.

* cygwin.din: Make clock SIGFE.  Add clock_gettime, sigwaitinfo, timer_create,
timer_delete, timer_settime.
* include/cygwin/version.h: Reflect above additions.
* fork.cc (fork_child): Call fixup_timers_after_fork.
* signal.cc (sigwait): Remove unused variable.
* timer.cc: New file.
(clock_gettime): Define new function.
(timer_tracker): Define new struct used by timer functions.
(timer_tracker::timer_tracker): New function.
(to_us): New function.
(timer_thread): New function.
(timer_tracker::settime): New function.
(timer_create): New function.
(timer_settime): New function.
(timer_delete): New function.
(fixup_timers_after_fork): New function.
* cygthread.cc: Bump thread count.
* signal.cc (sigwaitinfo): Define new function.
(sigwait): Redefine based on sigwaitinfo.
* include/cygwin/signal.h (sigwaitinfo): Declare.
(sigwait): Ditto.
* dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when
ctty == ctty_on_hold.
* cygtls.h (_threadinfo::threadkill): New element.
(_threadinfo::set_threadkill): Declare new function.
(_threadinfo::reset_threadkill): Declare new function.
* dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to
running process with #(*& Windows Me/9x.
(initial_env): Try to initialize strace if uninitialized.
* gendef: Don't zero signal if threadkill is set since that will happen in the
called function.
* signal.cc (sigwait): Ensure cleanup in error conditions.
* sigproc.cc (sig_send): Clear packet mask storage.
(wait_subproc): Fill in child exit code in siginfo_t structure.
* thread.cc (pthread_kill): Set threadkill flag.
* tlsoffsets.h: Regenerate.  Throughout, use siginfo_t to fill out all signal
information for "kernel" signals.
* cygtls.h (_threadinfo::set_siginfo): Declare new function.
* cygtls.cc (_threadinfo::set_siginfo): Define new function.
* dcrt0.cc (do_exit): Accommodate siginfo_t considerations.
* exceptions.cc (handle_exceptions): Ditto.
(sig_handle_tty_stop): Ditto.
(ctrl_c_handler): Use killsys() to send signal.
(sigpacket::process): Rename from sig_handle.  Use siginfo_t field from
sigpacket for everything.
(tty_min::kill_pgrp): Accommodate siginfo_t considerations.
(fhandler_termios::bg_check): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal.
* signal.cc (kill_worker): Rewrite to use siginfo_t second argument.
(kill_pgrp): Ditto.
(kill0): Define new function pulled from kill().
(kill): Rewrite as frontend to kill0.
(killsys): Define new function.
* sigproc.cc (sigelem): Eliminate.
(sigpacket): Move to sigproc.h.  Subsume sigelem.
(pending_signals): Use sigpacket rather than sigelem for everything.
(sig_clear): Ditto.
(wait_sig): Ditto.
(sig_send): Rewrite to use siginfo_t argument.
(sig_send): New function wratpper to sig_send with siginfo_t argument.
(wait_subproc): Accommodate siginfo_t considerations.
* thread.cc (pthread_kill): Ditto.
* sigproc.h (sigpacket): Move here.
(sigpacket::process): Declare "new" function.
(sig_handle): Eliminate declaration.
(sig_send): Declare with new paramaters.
(killsys): Declare new function.
(kill_pgrp): Declare.
* winsup.h: Move some signal-specific stuff to sigproc.h.
* include/cygwin/signal.h: Tweak some siginfo_t stuff.

1 files changed, 20 insertions, 4 deletions

diff --git a/winsup/cygwin/sigproc.h b/winsup/cygwin/sigproc.h
index f34dfa208..03ee1b89b 100644
--- a/winsup/cygwin/sigproc.h
+++ b/winsup/cygwin/sigproc.h
@@ -48,6 +48,21 @@ typedef struct struct_waitq
   HANDLE thread_ev;
 } waitq;
 
+struct sigpacket
+{
+  siginfo_t si;
+  pid_t pid;
+  class _threadinfo *tls;
+  sigset_t *mask;
+  sigset_t mask_storage;
+  union
+  {
+    HANDLE wakeup;
+    struct sigpacket *next;
+  };
+  int __stdcall process () __attribute__ ((regparm (1)));
+};
+
 extern HANDLE signal_arrived;
 extern HANDLE sigCONT;
 
@@ -62,9 +77,6 @@ int __stdcall handle_sigprocmask (int sig, const sigset_t *set,
 
 extern "C" void __stdcall reset_signal_arrived ();
 extern "C" int __stdcall call_signal_handler_now ();
-#ifdef _CYGTLS_H
-int __stdcall sig_handle (int, sigset_t, int, _threadinfo *) __attribute__ ((regparm (3)));
-#endif
 void __stdcall sig_clear (int) __attribute__ ((regparm (1)));
 void __stdcall sig_set_pending (int) __attribute__ ((regparm (1)));
 int __stdcall handle_sigsuspend (sigset_t);
@@ -78,12 +90,16 @@ void __stdcall subproc_init ();
 void __stdcall sigproc_terminate ();
 bool __stdcall proc_exists (_pinfo *) __attribute__ ((regparm(1)));
 bool __stdcall pid_exists (pid_t) __attribute__ ((regparm(1)));
-int __stdcall sig_send (_pinfo *, int, void * = NULL) __attribute__ ((regparm(3)));
+int __stdcall sig_send (_pinfo *, siginfo_t&, class _threadinfo *tls = NULL) __attribute__ ((regparm (3)));
+int __stdcall sig_send (_pinfo *, int) __attribute__ ((regparm (2)));
 void __stdcall signal_fixup_after_fork ();
 void __stdcall signal_fixup_after_exec ();
 void __stdcall wait_for_sigthread ();
 void __stdcall sigalloc ();
 
+int kill_pgrp (pid_t, siginfo_t&);
+int killsys (pid_t, int);
+
 extern char myself_nowait_dummy[];
 
 extern struct sigaction *global_sigs;