memory/mozjemalloc/linkedlist.h
author Valentin Gosu <valentin.gosu@gmail.com>
Wed, 12 Aug 2015 00:43:48 +0200
changeset 289987 846e76b0e711b7b7640f41ddcf45904fe737d24a
parent 100844 87bd340fac6aa9f70c42bb4a8fbe0b7325277b0d
child 428298 9638b85c359051c792baab365d4a3b1ad30359a4
permissions -rw-r--r--
Bug 1172701 - Make GetSubresourceURI normalize the path for packaged resources r=mcmanus

/* -*- Mode: C; tab-width: 8; c-basic-offset: 8; indent-tabs-mode: t -*- */
/* vim:set softtabstop=8 shiftwidth=8 noet: */
/*-
 * Copyright (C) the Mozilla Foundation.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice(s), this list of conditions and the following disclaimer as
 *    the first lines of this file unmodified other than the possible
 *    addition of one or more copyright notices.
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 *    notice(s), this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
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 *******************************************************************************/

#ifndef linkedlist_h__
#define linkedlist_h__

#include <stddef.h>

typedef struct LinkedList_s LinkedList;

struct LinkedList_s {
	LinkedList *next;
	LinkedList *prev;
};

/* Convert from LinkedList* to foo*. */
#define LinkedList_Get(e, type, prop) \
  (type*)((char*)(e) - offsetof(type, prop))

/* Insert |e| at the beginning of |l|.  */
void LinkedList_InsertHead(LinkedList *l, LinkedList *e)
{
	e->next = l;
	e->prev = l->prev;
	e->next->prev = e;
	e->prev->next = e;
}

void LinkedList_Remove(LinkedList *e)
{
	e->prev->next = e->next;
	e->next->prev = e->prev;
	e->next = e;
	e->prev = e;
}

bool LinkedList_IsEmpty(LinkedList *e)
{
	return e->next == e;
}

void LinkedList_Init(LinkedList *e)
{
	e->next = e;
	e->prev = e;
}

#endif