Mercurial > hg > early-roguelike
view rogue3/list.c @ 162:600873555ec0
Don't swap signal handlers in md_shellescape().
md_shellescape() sets SIGINT and SIGQUIT to be ignored, storing the
previous handlers, and restores them after the shell exits. But it
mixed up the two handlers.
Since the signals were usually handled by the same function, this fix
doesn't have much effect, but anything that makes signal code less
confusing is a good thing.
author | John "Elwin" Edwards |
---|---|
date | Mon, 08 Jun 2015 10:01:25 -0400 |
parents | 527e2150eaf0 |
children | 0250220d8cdd |
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/* * Functions for dealing with linked lists of goodies * * @(#)list.c 3.3 (Berkeley) 6/15/81 * * Rogue: Exploring the Dungeons of Doom * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman * All rights reserved. * * See the file LICENSE.TXT for full copyright and licensing information. */ #include "curses.h" #include <stdlib.h> #include <string.h> #include "machdep.h" #include "rogue.h" /* * detach: * Takes an item out of whatever linked list it might be in */ void _detach(struct linked_list **list, struct linked_list *item) { if (*list == item) *list = next(item); if (prev(item) != NULL) item->l_prev->l_next = next(item); if (next(item) != NULL) item->l_next->l_prev = prev(item); item->l_next = NULL; item->l_prev = NULL; } /* * _attach: * add an item to the head of a list */ void _attach(struct linked_list **list, struct linked_list *item) { if (*list != NULL) { item->l_next = *list; (*list)->l_prev = item; item->l_prev = NULL; } else { item->l_next = NULL; item->l_prev = NULL; } *list = item; } /* * _free_list: * Throw the whole blamed thing away */ void _free_list(struct linked_list **ptr) { struct linked_list *item; while (*ptr != NULL) { item = *ptr; *ptr = next(item); discard(item); } } /* * discard: * free up an item */ void discard(struct linked_list *item) { total -= 2; FREE(item->l_data); FREE(item); } /* * new_item * get a new item with a specified size */ struct linked_list * new_item(int size) { struct linked_list *item; if ((item = (struct linked_list *) _new(sizeof *item)) == NULL) { msg("Ran out of memory for header after %d items", total); return NULL; } if ((item->l_data = _new(size)) == NULL) { msg("Ran out of memory for data after %d items", total); free(item); return NULL; } item->l_next = item->l_prev = NULL; memset(item->l_data,0,size); return item; } char * _new(size_t size) { char *space = ALLOC(size); if (space == NULL) { sprintf(prbuf, "Rogue ran out of memory (%d). Fatal error!", md_memused()); fatal(prbuf); } total++; return space; }