binutils-gdb/gdb/gdb-events.c

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/* User Interface Events.
Copyright 1999, 2001, 2002 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
This file is part of GDB.
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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.
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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.
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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. */
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/* 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"
#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);
}
void
tracepoint_create_event (int number)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "tracepoint_create_event\n");
if (!current_event_hooks->tracepoint_create)
return;
current_event_hooks->tracepoint_create (number);
}
void
tracepoint_delete_event (int number)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "tracepoint_delete_event\n");
if (!current_event_hooks->tracepoint_delete)
return;
current_event_hooks->tracepoint_delete (number);
}
void
tracepoint_modify_event (int number)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "tracepoint_modify_event\n");
if (!current_event_hooks->tracepoint_modify)
return;
current_event_hooks->tracepoint_modify (number);
}
void
architecture_changed_event (void)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "architecture_changed_event\n");
if (!current_event_hooks->architecture_changed)
return;
current_event_hooks->architecture_changed ();
}
void
target_changed_event (void)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "target_changed_event\n");
if (!current_event_hooks->target_changed)
return;
current_event_hooks->target_changed ();
}
void
selected_frame_level_changed_event (int level)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "selected_frame_level_changed_event\n");
if (!current_event_hooks->selected_frame_level_changed)
return;
current_event_hooks->selected_frame_level_changed (level);
}
void
selected_thread_changed_event (int thread_num)
{
if (gdb_events_debug)
fprintf_unfiltered (gdb_stdlog, "selected_thread_changed_event\n");
if (!current_event_hooks->selected_thread_changed)
return;
current_event_hooks->selected_thread_changed (thread_num);
}
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#endif
#if WITH_GDB_EVENTS
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struct gdb_events *
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set_gdb_event_hooks (struct gdb_events *vector)
{
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struct gdb_events *old_events = current_event_hooks;
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if (vector == NULL)
current_event_hooks = &queue_event_hooks;
else
current_event_hooks = vector;
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return old_events;
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}
#endif
#if WITH_GDB_EVENTS
void
clear_gdb_event_hooks (void)
{
set_gdb_event_hooks (&null_event_hooks);
}
#endif
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enum gdb_event
{
breakpoint_create,
breakpoint_delete,
breakpoint_modify,
tracepoint_create,
tracepoint_delete,
tracepoint_modify,
architecture_changed,
target_changed,
selected_frame_level_changed,
selected_thread_changed,
nr_gdb_events
};
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struct breakpoint_create
{
int b;
};
struct breakpoint_delete
{
int b;
};
struct breakpoint_modify
{
int b;
};
struct tracepoint_create
{
int number;
};
struct tracepoint_delete
{
int number;
};
struct tracepoint_modify
{
int number;
};
struct selected_frame_level_changed
{
int level;
};
struct selected_thread_changed
{
int thread_num;
};
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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;
struct tracepoint_create tracepoint_create;
struct tracepoint_delete tracepoint_delete;
struct tracepoint_modify tracepoint_modify;
struct selected_frame_level_changed selected_frame_level_changed;
struct selected_thread_changed selected_thread_changed;
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}
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);
}
static void
queue_tracepoint_create (int number)
{
struct event *event = XMALLOC (struct event);
event->type = tracepoint_create;
event->data.tracepoint_create.number = number;
append (event);
}
static void
queue_tracepoint_delete (int number)
{
struct event *event = XMALLOC (struct event);
event->type = tracepoint_delete;
event->data.tracepoint_delete.number = number;
append (event);
}
static void
queue_tracepoint_modify (int number)
{
struct event *event = XMALLOC (struct event);
event->type = tracepoint_modify;
event->data.tracepoint_modify.number = number;
append (event);
}
static void
queue_architecture_changed (void)
{
struct event *event = XMALLOC (struct event);
event->type = architecture_changed;
append (event);
}
static void
queue_target_changed (void)
{
struct event *event = XMALLOC (struct event);
event->type = target_changed;
append (event);
}
static void
queue_selected_frame_level_changed (int level)
{
struct event *event = XMALLOC (struct event);
event->type = selected_frame_level_changed;
event->data.selected_frame_level_changed.level = level;
append (event);
}
static void
queue_selected_thread_changed (int thread_num)
{
struct event *event = XMALLOC (struct event);
event->type = selected_thread_changed;
event->data.selected_thread_changed.thread_num = thread_num;
append (event);
}
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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;
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xfree (event);
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}
/* 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;
case tracepoint_create:
vector->tracepoint_create
(event->data.tracepoint_create.number);
break;
case tracepoint_delete:
vector->tracepoint_delete
(event->data.tracepoint_delete.number);
break;
case tracepoint_modify:
vector->tracepoint_modify
(event->data.tracepoint_modify.number);
break;
case architecture_changed:
vector->architecture_changed ();
break;
case target_changed:
vector->target_changed ();
break;
case selected_frame_level_changed:
vector->selected_frame_level_changed
(event->data.selected_frame_level_changed.level);
break;
case selected_thread_changed:
vector->selected_thread_changed
(event->data.selected_thread_changed.thread_num);
break;
}
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delivering_events = event->next;
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xfree (event);
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}
}
void _initialize_gdb_events (void);
void
_initialize_gdb_events (void)
{
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struct cmd_list_element *c;
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#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;
queue_event_hooks.tracepoint_create = queue_tracepoint_create;
queue_event_hooks.tracepoint_delete = queue_tracepoint_delete;
queue_event_hooks.tracepoint_modify = queue_tracepoint_modify;
queue_event_hooks.architecture_changed = queue_architecture_changed;
queue_event_hooks.target_changed = queue_target_changed;
queue_event_hooks.selected_frame_level_changed = queue_selected_frame_level_changed;
queue_event_hooks.selected_thread_changed = queue_selected_thread_changed;
#endif
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c = add_set_cmd ("eventdebug", class_maintenance, var_zinteger,
(char *) (&gdb_events_debug), "Set event debugging.\n\
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When non-zero, event/notify debugging is enabled.", &setlist);
deprecate_cmd (c, "set debug event");
deprecate_cmd (add_show_from_set (c, &showlist), "show debug event");
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add_show_from_set (add_set_cmd ("event",
class_maintenance,
var_zinteger,
(char *) (&gdb_events_debug),
"Set event debugging.\n\
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When non-zero, event/notify debugging is enabled.", &setdebuglist),
&showdebuglist);
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}