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-rw-r--r--libpthread/linuxthreads_db/td_thr_validate.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/libpthread/linuxthreads_db/td_thr_validate.c b/libpthread/linuxthreads_db/td_thr_validate.c
new file mode 100644
index 000000000..6f893d3f7
--- /dev/null
+++ b/libpthread/linuxthreads_db/td_thr_validate.c
@@ -0,0 +1,70 @@
+/* Validate a thread handle.
+ Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "thread_dbP.h"
+#include <linuxthreads/internals.h>
+
+
+td_err_e
+td_thr_validate (const td_thrhandle_t *th)
+{
+ struct pthread_handle_struct *handles = th->th_ta_p->handles;
+ int pthread_threads_max = th->th_ta_p->pthread_threads_max;
+ int cnt;
+ struct pthread_handle_struct phc;
+
+ LOG ("td_thr_validate");
+
+ /* A special case: if the program just starts up the handle is
+ NULL. */
+ if (th->th_unique == NULL)
+ {
+ /* Read the first handle. If the pointer to the thread
+ descriptor is not NULL this is an error. */
+ if (ps_pdread (th->th_ta_p->ph, handles, &phc,
+ sizeof (struct pthread_handle_struct)) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ return phc.h_descr == NULL ? TD_OK : TD_NOTHR;
+ }
+
+ /* Now get all descriptors, one after the other. */
+ for (cnt = 0; cnt < pthread_threads_max; ++cnt, ++handles)
+ {
+ if (ps_pdread (th->th_ta_p->ph, handles, &phc,
+ sizeof (struct pthread_handle_struct)) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ if (phc.h_descr != NULL && phc.h_descr == th->th_unique)
+ {
+ struct _pthread_descr_struct pds;
+
+ if (ps_pdread (th->th_ta_p->ph, phc.h_descr, &pds,
+ th->th_ta_p->sizeof_descr) != PS_OK)
+ return TD_ERR; /* XXX Other error value? */
+
+ /* XXX There should be another test using the TID but this is
+ currently not available. */
+ return pds.p_terminated != 0 ? TD_NOTHR : TD_OK;
+ }
+ }
+
+ return TD_ERR;
+}