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/*
* Copyright (C) 2010 Joel Rosdahl
*
* 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, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "ccache.h"
struct exit_function {
void (*function)(void *);
void *context;
struct exit_function *next;
};
struct nullary_exit_function {
void (*function)(void);
};
static struct exit_function *exit_functions;
static void
call_nullary_exit_function(void *context)
{
struct nullary_exit_function *p = (struct nullary_exit_function*)context;
p->function();
free(p);
}
/*
* Initialize exit functions. Must be called once before exitfn_add* are used.
*/
void
exitfn_init(void)
{
if (atexit(exitfn_call) != 0) {
fatal("atexit failed: %s", strerror(errno));
}
}
/*
* Add a nullary function to be called context when ccache exits. Functions are
* called in reverse order.
*/
void
exitfn_add_nullary(void (*function)(void))
{
struct nullary_exit_function *p = x_malloc(sizeof(*p));
p->function = function;
exitfn_add(call_nullary_exit_function, p);
}
/*
* Add a function to be called with a context parameter when ccache exits.
* Functions are called in reverse order.
*/
void
exitfn_add(void (*function)(void *), void *context)
{
struct exit_function *p;
p = x_malloc(sizeof(*p));
p->function = function;
p->context = context;
p->next = exit_functions;
exit_functions = p;
}
/*
* Call added functions.
*/
void
exitfn_call(void)
{
struct exit_function *p = exit_functions, *q;
while (p) {
p->function(p->context);
q = p;
p = p->next;
free(q);
}
exit_functions = NULL;
}
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