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/* User Interface Events.
Copyright 1999 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GDB.
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. */
/* Work in progress */
/* This file was created with the aid of ``gdb-events.sh''.
The bourn shell script ``gdb-events.sh'' creates the files
``new-gdb-events.c'' and ``new-gdb-events.h and then compares
them against the existing ``gdb-events.[hc]''. Any differences
found being reported.
If editing this file, please also run gdb-events.sh and merge any
changes into that script. Conversely, when making sweeping changes
to this file, modifying gdb-events.sh and using its output may
prove easier. */
#include "defs.h"
#include "gdb-events.h"
#include "gdbcmd.h"
#undef XMALLOC
#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
#if WITH_GDB_EVENTS
static struct gdb_events null_event_hooks;
static struct gdb_events queue_event_hooks;
static struct gdb_events *current_event_hooks = &null_event_hooks;
#endif
int gdb_events_debug;
#if WITH_GDB_EVENTS
void
breakpoint_create_event (int b)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "breakpoint_create_event\n");
if (!current_event_hooks->breakpoint_create)
return;
current_event_hooks->breakpoint_create (b);
}
void
breakpoint_delete_event (int b)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "breakpoint_delete_event\n");
if (!current_event_hooks->breakpoint_delete)
return;
current_event_hooks->breakpoint_delete (b);
}
void
breakpoint_modify_event (int b)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "breakpoint_modify_event\n");
if (!current_event_hooks->breakpoint_modify)
return;
current_event_hooks->breakpoint_modify (b);
}
#endif
#if WITH_GDB_EVENTS
struct gdb_events *
set_gdb_event_hooks (struct gdb_events *vector)
{
struct gdb_events *old_events = current_event_hooks;
if (vector == NULL)
current_event_hooks = &queue_event_hooks;
else
current_event_hooks = vector;
return old_events;
}
#endif
enum gdb_event
{
breakpoint_create,
breakpoint_delete,
breakpoint_modify,
nr_gdb_events
};
struct breakpoint_create
{
int b;
};
struct breakpoint_delete
{
int b;
};
struct breakpoint_modify
{
int b;
};
struct event
{
enum gdb_event type;
struct event *next;
union
{
struct breakpoint_create breakpoint_create;
struct breakpoint_delete breakpoint_delete;
struct breakpoint_modify breakpoint_modify;
}
data;
};
struct event *pending_events;
struct event *delivering_events;
static void
append (struct event *new_event)
{
struct event **event = &pending_events;
while ((*event) != NULL)
event = &((*event)->next);
(*event) = new_event;
(*event)->next = NULL;
}
static void
queue_breakpoint_create (int b)
{
struct event *event = XMALLOC (struct event);
event->type = breakpoint_create;
event->data.breakpoint_create.b = b;
append (event);
}
static void
queue_breakpoint_delete (int b)
{
struct event *event = XMALLOC (struct event);
event->type = breakpoint_delete;
event->data.breakpoint_delete.b = b;
append (event);
}
static void
queue_breakpoint_modify (int b)
{
struct event *event = XMALLOC (struct event);
event->type = breakpoint_modify;
event->data.breakpoint_modify.b = b;
append (event);
}
void
gdb_events_deliver (struct gdb_events *vector)
{
/* Just zap any events left around from last time. */
while (delivering_events != NULL)
{
struct event *event = delivering_events;
delivering_events = event->next;
free (event);
}
/* Process any pending events. Because one of the deliveries could
bail out we move everything off of the pending queue onto an
in-progress queue where it can, later, be cleaned up if
necessary. */
delivering_events = pending_events;
pending_events = NULL;
while (delivering_events != NULL)
{
struct event *event = delivering_events;
switch (event->type)
{
case breakpoint_create:
vector->breakpoint_create
(event->data.breakpoint_create.b);
break;
case breakpoint_delete:
vector->breakpoint_delete
(event->data.breakpoint_delete.b);
break;
case breakpoint_modify:
vector->breakpoint_modify
(event->data.breakpoint_modify.b);
break;
}
delivering_events = event->next;
free (event);
}
}
void _initialize_gdb_events (void);
void
_initialize_gdb_events (void)
{
#if WITH_GDB_EVENTS
queue_event_hooks.breakpoint_create = queue_breakpoint_create;
queue_event_hooks.breakpoint_delete = queue_breakpoint_delete;
queue_event_hooks.breakpoint_modify = queue_breakpoint_modify;
#endif
add_show_from_set (add_set_cmd ("eventdebug",
class_maintenance,
var_zinteger,
(char *)&gdb_events_debug,
"Set event debugging.\n\
When non-zero, event/notify debugging is enabled.", &setlist),
&showlist);
}
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