PR python/15620, PR python/18620 - breakpoint events in Python

[deliverable/binutils-gdb.git] / gdb / observer.c

diff --git a/gdb/observer.c b/gdb/observer.c
index 570d979ac24f2666cdbe6ac98d43e32e2ea1f28a..d678eeaedd65ab4f81d631403f873b537962f2fb 100644 (file)
--- a/gdb/observer.c
+++ b/gdb/observer.c
@@ -1,7 +1,6 @@
 /* GDB Notifications to Observers.
 
-   Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2003-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -19,9 +18,9 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* An observer is an entity who is interested in being notified when GDB
-   reaches certain states, or certain events occur in GDB. The entity being
-   observed is called the Subject. To receive notifications, the observer
-   attaches a callback to the subject. One subject can have several
+   reaches certain states, or certain events occur in GDB.  The entity being
+   observed is called the Subject.  To receive notifications, the observer
+   attaches a callback to the subject.  One subject can have several
    observers.
 
    This file implements an internal generic low-level event notification
@@ -31,15 +30,15 @@
    for all possible notifications.
 
    The current implementation of the generic observer provides support
-   for contextual data. This contextual data is given to the subject
-   when attaching the callback. In return, the subject will provide
+   for contextual data.  This contextual data is given to the subject
+   when attaching the callback.  In return, the subject will provide
    this contextual data back to the observer as a parameter of the
    callback.
 
    FIXME: The current support for the contextual data is only partial,
    as it lacks a mechanism that would deallocate this data when the
-   callback is detached. This is not a problem so far, as this contextual
-   data is only used internally to hold a function pointer. Later on,
+   callback is detached.  This is not a problem so far, as this contextual
+   data is only used internally to hold a function pointer.  Later on,
    if a certain observer needs to provide support for user-level
    contextual data, then the generic notification mechanism will need
    need to be enhanced to allow the observer to provide a routine to
@@ -55,7 +54,7 @@
 #include "command.h"
 #include "gdbcmd.h"
 
-static int observer_debug;
+static unsigned int observer_debug;
 static void
 show_observer_debug (struct ui_file *file, int from_tty,
                     struct cmd_list_element *c, const char *value)
@@ -90,9 +89,9 @@ struct observer_list
 static struct observer_list *
 xalloc_observer_list_node (void)
 {
-  struct observer_list *node = XMALLOC (struct observer_list);
+  struct observer_list *node = XNEW (struct observer_list);
 
-  node->observer = XMALLOC (struct observer);
+  node->observer = XNEW (struct observer);
   return node;
 }
 
@@ -182,6 +181,11 @@ int observer_test_first_observer = 0;
 int observer_test_second_observer = 0;
 int observer_test_third_observer = 0;
 
+/* Provide prototypes to silence -Wmissing-prototypes.  */
+extern void observer_test_first_notification_function (int arg);
+extern void observer_test_second_notification_function (int arg);
+extern void observer_test_third_notification_function (int arg);
+
 void
 observer_test_first_notification_function (int arg)
 {
@@ -205,14 +209,14 @@ extern initialize_file_ftype _initialize_observer; /* -Wmissing-prototypes */
 void
 _initialize_observer (void)
 {
-  add_setshow_zinteger_cmd ("observer", class_maintenance,
-                           &observer_debug, _("\
+  add_setshow_zuinteger_cmd ("observer", class_maintenance,
+                            &observer_debug, _("\
 Set observer debugging."), _("\
 Show observer debugging."), _("\
 When non-zero, observer debugging is enabled."),
-                           NULL,
-                           show_observer_debug,
-                           &setdebuglist, &showdebuglist);
+                            NULL,
+                            show_observer_debug,
+                            &setdebuglist, &showdebuglist);
 }
 
 #include "observer.inc"