58d5e2c3ff
(discard_my_cleanups,save_my_cleanups,restore_my_cleanups): Ditto. * cleanups.h (make_my_cleanup,make_my_cleanup2): Delete (discard_my_cleanups,save_my_cleanups,restore_my_cleanups): Delete.
85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/* Cleanups.
|
|
Copyright (C) 1986, 1988-2005, 2007-2012 Free Software Foundation, Inc.
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef CLEANUPS_H
|
|
#define CLEANUPS_H
|
|
|
|
/* The cleanup list records things that have to be undone
|
|
if an error happens (descriptors to be closed, memory to be freed, etc.)
|
|
Each link in the chain records a function to call and an
|
|
argument to give it.
|
|
|
|
Use make_cleanup to add an element to the cleanup chain.
|
|
Use do_cleanups to do all cleanup actions back to a given
|
|
point in the chain. Use discard_cleanups to remove cleanups
|
|
from the chain back to a given point, not doing them.
|
|
|
|
If the argument is pointer to allocated memory, then you need
|
|
to additionally set the 'free_arg' member to a function that will
|
|
free that memory. This function will be called both when the cleanup
|
|
is executed and when it's discarded. */
|
|
|
|
struct cleanup
|
|
{
|
|
struct cleanup *next;
|
|
void (*function) (void *);
|
|
void (*free_arg) (void *);
|
|
void *arg;
|
|
};
|
|
|
|
/* NOTE: cagney/2000-03-04: This typedef is strictly for the
|
|
make_cleanup function declarations below. Do not use this typedef
|
|
as a cast when passing functions into the make_cleanup() code.
|
|
Instead either use a bounce function or add a wrapper function.
|
|
Calling a f(char*) function with f(void*) is non-portable. */
|
|
typedef void (make_cleanup_ftype) (void *);
|
|
|
|
/* WARNING: The result of the "make cleanup" routines is not the intuitive
|
|
choice of being a handle on the just-created cleanup. Instead it is an
|
|
opaque handle of the cleanup mechanism and represents all cleanups created
|
|
from that point onwards. */
|
|
|
|
extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
|
|
|
|
extern struct cleanup *make_cleanup_dtor (make_cleanup_ftype *, void *,
|
|
void (*dtor) (void *));
|
|
|
|
extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
|
|
|
|
/* A special value to pass to do_cleanups and do_final_cleanups
|
|
to tell them to do all cleanups. */
|
|
#define ALL_CLEANUPS ((struct cleanup *)0)
|
|
|
|
extern void do_cleanups (struct cleanup *);
|
|
extern void do_final_cleanups (struct cleanup *);
|
|
|
|
extern void discard_cleanups (struct cleanup *);
|
|
extern void discard_final_cleanups (struct cleanup *);
|
|
|
|
extern struct cleanup *save_cleanups (void);
|
|
extern struct cleanup *save_final_cleanups (void);
|
|
|
|
extern void restore_cleanups (struct cleanup *);
|
|
extern void restore_final_cleanups (struct cleanup *);
|
|
|
|
/* A no-op cleanup.
|
|
This is useful when you want to establish a known reference point
|
|
to pass to do_cleanups. */
|
|
extern void null_cleanup (void *);
|
|
|
|
#endif /* CLEANUPS_H */
|