Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 126 insertions, 0 deletions

diff --git a/REORG.TODO/nptl_db/td_thr_get_info.c b/REORG.TODO/nptl_db/td_thr_get_info.c
new file mode 100644
index 0000000000..48979b8e28
--- /dev/null
+++ b/REORG.TODO/nptl_db/td_thr_get_info.c
@@ -0,0 +1,126 @@
+/* Get thread information.
+   Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+#include <string.h>
+#include <stdint.h>
+#include "thread_dbP.h"
+
+
+td_err_e
+td_thr_get_info (const td_thrhandle_t *th, td_thrinfo_t *infop)
+{
+  td_err_e err;
+  void *copy;
+  psaddr_t tls, schedpolicy, schedprio, cancelhandling, tid, report_events;
+
+  LOG ("td_thr_get_info");
+
+  if (th->th_unique == 0)
+    {
+      /* Special case for the main thread before initialization.  */
+      copy = NULL;
+      tls = 0;
+      cancelhandling = 0;
+      schedpolicy = SCHED_OTHER;
+      schedprio = 0;
+      tid = 0;
+      err = DB_GET_VALUE (report_events, th->th_ta_p,
+			  __nptl_initial_report_events, 0);
+    }
+  else
+    {
+      /* Copy the whole descriptor in once so we can access the several
+	 fields locally.  Excess copying in one go is much better than
+	 multiple ps_pdread calls.  */
+      err = DB_GET_STRUCT (copy, th->th_ta_p, th->th_unique, pthread);
+      if (err != TD_OK)
+	return err;
+
+      err = DB_GET_FIELD_ADDRESS (tls, th->th_ta_p, th->th_unique,
+				  pthread, specific, 0);
+      if (err != TD_OK)
+	return err;
+
+      err = DB_GET_FIELD_LOCAL (schedpolicy, th->th_ta_p, copy, pthread,
+				schedpolicy, 0);
+      if (err != TD_OK)
+	return err;
+      err = DB_GET_FIELD_LOCAL (schedprio, th->th_ta_p, copy, pthread,
+				schedparam_sched_priority, 0);
+      if (err != TD_OK)
+	return err;
+      err = DB_GET_FIELD_LOCAL (tid, th->th_ta_p, copy, pthread, tid, 0);
+      if (err != TD_OK)
+	return err;
+      err = DB_GET_FIELD_LOCAL (cancelhandling, th->th_ta_p, copy, pthread,
+				cancelhandling, 0);
+      if (err != TD_OK)
+	return err;
+      err = DB_GET_FIELD_LOCAL (report_events, th->th_ta_p, copy, pthread,
+				report_events, 0);
+    }
+  if (err != TD_OK)
+    return err;
+
+  /* Fill in information.  Clear first to provide reproducable
+     results for the fields we do not fill in.  */
+  memset (infop, '\0', sizeof (td_thrinfo_t));
+
+  infop->ti_tid = (thread_t) th->th_unique;
+  infop->ti_tls = (char *) tls;
+  infop->ti_pri = ((uintptr_t) schedpolicy == SCHED_OTHER
+		   ? 0 : (uintptr_t) schedprio);
+  infop->ti_type = TD_THR_USER;
+
+  if ((((int) (uintptr_t) cancelhandling) & EXITING_BITMASK) == 0)
+    /* XXX For now there is no way to get more information.  */
+    infop->ti_state = TD_THR_ACTIVE;
+  else if ((((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK) == 0)
+    infop->ti_state = TD_THR_ZOMBIE;
+  else
+    infop->ti_state = TD_THR_UNKNOWN;
+
+  /* Initialization which are the same in both cases.  */
+  infop->ti_ta_p = th->th_ta_p;
+  infop->ti_lid = tid == 0 ? ps_getpid (th->th_ta_p->ph) : (uintptr_t) tid;
+  infop->ti_traceme = report_events != 0;
+
+  if (copy != NULL)
+    err = DB_GET_FIELD_LOCAL (infop->ti_startfunc, th->th_ta_p, copy, pthread,
+			      start_routine, 0);
+  if (copy != NULL && err == TD_OK)
+    {
+      uint32_t idx;
+      for (idx = 0; idx < TD_EVENTSIZE; ++idx)
+	{
+	  psaddr_t word;
+	  err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy, pthread,
+				    eventbuf_eventmask_event_bits, idx);
+	  if (err != TD_OK)
+	    break;
+	  infop->ti_events.event_bits[idx] = (uintptr_t) word;
+	}
+      if (err == TD_NOAPLIC)
+	memset (&infop->ti_events.event_bits[idx], 0,
+		(TD_EVENTSIZE - idx) * sizeof infop->ti_events.event_bits[0]);
+    }
+
+  return err;
+}