* breakpoint.c: (watch_command_1): Parse additional optional

"thread" parameter to the watchpoint command and set the
      "thread" member of the breakpoint struct.
      * doc/gdb.texinfo: Add new parameter's description.
      * testsuite/gdb.base/watch_thread_num.c: New testcase source file.
      * testsuite/gdb.base/watch_thread_num.exp: New testcase expect file.

gdb/testsuite/gdb.base/watch_thread_num.c

@@ -0,0 +1,63 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   This file is copied from schedlock.c.  */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+void *thread_function (void *arg); /* Pointer to function executed by each thread */
+
+#define NUM 5
+
+static unsigned int shared_var = 1;
+
+int main () {
+    int res;
+    pthread_t threads[NUM];
+    void *thread_result;
+    long i;
+
+    for (i = 0; i < NUM; i++)
+      {
+        res = pthread_create (&threads[i],
+                             NULL,
+                             thread_function,
+			     (void *) i);
+      }
+
+    thread_result = thread_function ((void *) i);
+
+    exit (EXIT_SUCCESS);
+}
+
+void *thread_function (void *arg) {
+    int my_number = (long) arg;
+    /* Don't run forever.  Run just short of it :)  */
+    while (shared_var > 0)
+      {
+        shared_var++;
+	usleep (1); /* Loop increment.  */
+      }
+
+    pthread_exit (NULL);
+}
+