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Further reduce size and remove queue.h, we can use GLIBC's old queue.h now
- Cleanup code - Further polish on total size using black magic - Remove OpenBSD queue.h, code simplied so much now it's not needed anymore. Instead we can rely on the standard GNU/Linux sys/queue.h (old BSD copy) $ size libuev.a libuev.so.1 text data bss dec hex filename 1520 0 0 1520 5f0 libuev.o (ex libuev.a) 4194 680 8 4882 1312 libuev.so.1 Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
@@ -1,648 +0,0 @@
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/* $OpenBSD: queue.h,v 1.38 2013/07/03 15:05:21 fgsch Exp $ */
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/* $NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $ */
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/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
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*
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* @(#)queue.h 8.5 (Berkeley) 8/20/94
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*/
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#ifndef _SYS_QUEUE_H_
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#define _SYS_QUEUE_H_
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/*
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* This file defines five types of data structures: singly-linked lists,
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* lists, simple queues, tail queues, and circular queues.
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*
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*
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* A singly-linked list is headed by a single forward pointer. The elements
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* are singly linked for minimum space and pointer manipulation overhead at
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* the expense of O(n) removal for arbitrary elements. New elements can be
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* added to the list after an existing element or at the head of the list.
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* Elements being removed from the head of the list should use the explicit
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* macro for this purpose for optimum efficiency. A singly-linked list may
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* only be traversed in the forward direction. Singly-linked lists are ideal
|
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* for applications with large datasets and few or no removals or for
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* implementing a LIFO queue.
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*
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* A list is headed by a single forward pointer (or an array of forward
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* pointers for a hash table header). The elements are doubly linked
|
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* so that an arbitrary element can be removed without a need to
|
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* traverse the list. New elements can be added to the list before
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* or after an existing element or at the head of the list. A list
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* may only be traversed in the forward direction.
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*
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* A simple queue is headed by a pair of pointers, one the head of the
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* list and the other to the tail of the list. The elements are singly
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* linked to save space, so elements can only be removed from the
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* head of the list. New elements can be added to the list before or after
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* an existing element, at the head of the list, or at the end of the
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* list. A simple queue may only be traversed in the forward direction.
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*
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* A tail queue is headed by a pair of pointers, one to the head of the
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* list and the other to the tail of the list. The elements are doubly
|
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* linked so that an arbitrary element can be removed without a need to
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* traverse the list. New elements can be added to the list before or
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* after an existing element, at the head of the list, or at the end of
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* the list. A tail queue may be traversed in either direction.
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*
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* A circle queue is headed by a pair of pointers, one to the head of the
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* list and the other to the tail of the list. The elements are doubly
|
||||
* linked so that an arbitrary element can be removed without a need to
|
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* traverse the list. New elements can be added to the list before or after
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* an existing element, at the head of the list, or at the end of the list.
|
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* A circle queue may be traversed in either direction, but has a more
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* complex end of list detection.
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*
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* For details on the use of these macros, see the queue(3) manual page.
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*/
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#if defined(QUEUE_MACRO_DEBUG) || (defined(_KERNEL) && defined(DIAGNOSTIC))
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#define _Q_INVALIDATE(a) (a) = ((void *)-1)
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#else
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#define _Q_INVALIDATE(a)
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#endif
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|
||||
/*
|
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* Singly-linked List definitions.
|
||||
*/
|
||||
#define SLIST_HEAD(name, type) \
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struct name { \
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struct type *slh_first; /* first element */ \
|
||||
}
|
||||
|
||||
#define SLIST_HEAD_INITIALIZER(head) \
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{ NULL }
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|
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#define SLIST_ENTRY(type) \
|
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struct { \
|
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struct type *sle_next; /* next element */ \
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}
|
||||
|
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/*
|
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* Singly-linked List access methods.
|
||||
*/
|
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#define SLIST_FIRST(head) ((head)->slh_first)
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#define SLIST_END(head) NULL
|
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#define SLIST_EMPTY(head) (SLIST_FIRST(head) == SLIST_END(head))
|
||||
#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
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|
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#define SLIST_FOREACH(var, head, field) \
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for((var) = SLIST_FIRST(head); \
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(var) != SLIST_END(head); \
|
||||
(var) = SLIST_NEXT(var, field))
|
||||
|
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#define SLIST_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = SLIST_FIRST(head); \
|
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(var) && ((tvar) = SLIST_NEXT(var, field), 1); \
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||||
(var) = (tvar))
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||||
|
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/*
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* Singly-linked List functions.
|
||||
*/
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||||
#define SLIST_INIT(head) { \
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SLIST_FIRST(head) = SLIST_END(head); \
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}
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|
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#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
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(elm)->field.sle_next = (slistelm)->field.sle_next; \
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(slistelm)->field.sle_next = (elm); \
|
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} while (0)
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||||
|
||||
#define SLIST_INSERT_HEAD(head, elm, field) do { \
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(elm)->field.sle_next = (head)->slh_first; \
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||||
(head)->slh_first = (elm); \
|
||||
} while (0)
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||||
|
||||
#define SLIST_REMOVE_AFTER(elm, field) do { \
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(elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \
|
||||
} while (0)
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||||
|
||||
#define SLIST_REMOVE_HEAD(head, field) do { \
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(head)->slh_first = (head)->slh_first->field.sle_next; \
|
||||
} while (0)
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||||
|
||||
#define SLIST_REMOVE(head, elm, type, field) do { \
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if ((head)->slh_first == (elm)) { \
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||||
SLIST_REMOVE_HEAD((head), field); \
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||||
} else { \
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||||
struct type *curelm = (head)->slh_first; \
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\
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||||
while (curelm->field.sle_next != (elm)) \
|
||||
curelm = curelm->field.sle_next; \
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||||
curelm->field.sle_next = \
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curelm->field.sle_next->field.sle_next; \
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||||
_Q_INVALIDATE((elm)->field.sle_next); \
|
||||
} \
|
||||
} while (0)
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||||
|
||||
/*
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||||
* List definitions.
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||||
*/
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#define LIST_HEAD(name, type) \
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struct name { \
|
||||
struct type *lh_first; /* first element */ \
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}
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|
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#define LIST_HEAD_INITIALIZER(head) \
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{ NULL }
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||||
|
||||
#define LIST_ENTRY(type) \
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struct { \
|
||||
struct type *le_next; /* next element */ \
|
||||
struct type **le_prev; /* address of previous next element */ \
|
||||
}
|
||||
|
||||
/*
|
||||
* List access methods
|
||||
*/
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#define LIST_FIRST(head) ((head)->lh_first)
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#define LIST_END(head) NULL
|
||||
#define LIST_EMPTY(head) (LIST_FIRST(head) == LIST_END(head))
|
||||
#define LIST_NEXT(elm, field) ((elm)->field.le_next)
|
||||
|
||||
#define LIST_FOREACH(var, head, field) \
|
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for((var) = LIST_FIRST(head); \
|
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(var)!= LIST_END(head); \
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(var) = LIST_NEXT(var, field))
|
||||
|
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#define LIST_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = LIST_FIRST(head); \
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(var) && ((tvar) = LIST_NEXT(var, field), 1); \
|
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(var) = (tvar))
|
||||
|
||||
/*
|
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* List functions.
|
||||
*/
|
||||
#define LIST_INIT(head) do { \
|
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LIST_FIRST(head) = LIST_END(head); \
|
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} while (0)
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|
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#define LIST_INSERT_AFTER(listelm, elm, field) do { \
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if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
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(listelm)->field.le_next->field.le_prev = \
|
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&(elm)->field.le_next; \
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(listelm)->field.le_next = (elm); \
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(elm)->field.le_prev = &(listelm)->field.le_next; \
|
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} while (0)
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|
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#define LIST_INSERT_BEFORE(listelm, elm, field) do { \
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(elm)->field.le_prev = (listelm)->field.le_prev; \
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(elm)->field.le_next = (listelm); \
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*(listelm)->field.le_prev = (elm); \
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(listelm)->field.le_prev = &(elm)->field.le_next; \
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} while (0)
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#define LIST_INSERT_HEAD(head, elm, field) do { \
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if (((elm)->field.le_next = (head)->lh_first) != NULL) \
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(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
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(head)->lh_first = (elm); \
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(elm)->field.le_prev = &(head)->lh_first; \
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} while (0)
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#define LIST_REMOVE(elm, field) do { \
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if ((elm)->field.le_next != NULL) \
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(elm)->field.le_next->field.le_prev = \
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(elm)->field.le_prev; \
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*(elm)->field.le_prev = (elm)->field.le_next; \
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_Q_INVALIDATE((elm)->field.le_prev); \
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_Q_INVALIDATE((elm)->field.le_next); \
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} while (0)
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#define LIST_REPLACE(elm, elm2, field) do { \
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if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \
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(elm2)->field.le_next->field.le_prev = \
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&(elm2)->field.le_next; \
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(elm2)->field.le_prev = (elm)->field.le_prev; \
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*(elm2)->field.le_prev = (elm2); \
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_Q_INVALIDATE((elm)->field.le_prev); \
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_Q_INVALIDATE((elm)->field.le_next); \
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} while (0)
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/*
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* Simple queue definitions.
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*/
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#define SIMPLEQ_HEAD(name, type) \
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struct name { \
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struct type *sqh_first; /* first element */ \
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struct type **sqh_last; /* addr of last next element */ \
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}
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#define SIMPLEQ_HEAD_INITIALIZER(head) \
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{ NULL, &(head).sqh_first }
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|
||||
#define SIMPLEQ_ENTRY(type) \
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struct { \
|
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struct type *sqe_next; /* next element */ \
|
||||
}
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||||
|
||||
/*
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||||
* Simple queue access methods.
|
||||
*/
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||||
#define SIMPLEQ_FIRST(head) ((head)->sqh_first)
|
||||
#define SIMPLEQ_END(head) NULL
|
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#define SIMPLEQ_EMPTY(head) (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
|
||||
#define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
|
||||
|
||||
#define SIMPLEQ_FOREACH(var, head, field) \
|
||||
for((var) = SIMPLEQ_FIRST(head); \
|
||||
(var) != SIMPLEQ_END(head); \
|
||||
(var) = SIMPLEQ_NEXT(var, field))
|
||||
|
||||
#define SIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
|
||||
for ((var) = SIMPLEQ_FIRST(head); \
|
||||
(var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
/*
|
||||
* Simple queue functions.
|
||||
*/
|
||||
#define SIMPLEQ_INIT(head) do { \
|
||||
(head)->sqh_first = NULL; \
|
||||
(head)->sqh_last = &(head)->sqh_first; \
|
||||
} while (0)
|
||||
|
||||
#define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \
|
||||
if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
|
||||
(head)->sqh_last = &(elm)->field.sqe_next; \
|
||||
(head)->sqh_first = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \
|
||||
(elm)->field.sqe_next = NULL; \
|
||||
*(head)->sqh_last = (elm); \
|
||||
(head)->sqh_last = &(elm)->field.sqe_next; \
|
||||
} while (0)
|
||||
|
||||
#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
|
||||
(head)->sqh_last = &(elm)->field.sqe_next; \
|
||||
(listelm)->field.sqe_next = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define SIMPLEQ_REMOVE_HEAD(head, field) do { \
|
||||
if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
|
||||
(head)->sqh_last = &(head)->sqh_first; \
|
||||
} while (0)
|
||||
|
||||
#define SIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
|
||||
if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \
|
||||
== NULL) \
|
||||
(head)->sqh_last = &(elm)->field.sqe_next; \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
* XOR Simple queue definitions.
|
||||
*/
|
||||
#define XSIMPLEQ_HEAD(name, type) \
|
||||
struct name { \
|
||||
struct type *sqx_first; /* first element */ \
|
||||
struct type **sqx_last; /* addr of last next element */ \
|
||||
unsigned long sqx_cookie; \
|
||||
}
|
||||
|
||||
#define XSIMPLEQ_ENTRY(type) \
|
||||
struct { \
|
||||
struct type *sqx_next; /* next element */ \
|
||||
}
|
||||
|
||||
/*
|
||||
* XOR Simple queue access methods.
|
||||
*/
|
||||
#define XSIMPLEQ_XOR(head, ptr) ((__typeof(ptr))((head)->sqx_cookie ^ \
|
||||
(unsigned long)(ptr)))
|
||||
#define XSIMPLEQ_FIRST(head) XSIMPLEQ_XOR(head, ((head)->sqx_first))
|
||||
#define XSIMPLEQ_END(head) NULL
|
||||
#define XSIMPLEQ_EMPTY(head) (XSIMPLEQ_FIRST(head) == XSIMPLEQ_END(head))
|
||||
#define XSIMPLEQ_NEXT(head, elm, field) XSIMPLEQ_XOR(head, ((elm)->field.sqx_next))
|
||||
|
||||
|
||||
#define XSIMPLEQ_FOREACH(var, head, field) \
|
||||
for ((var) = XSIMPLEQ_FIRST(head); \
|
||||
(var) != XSIMPLEQ_END(head); \
|
||||
(var) = XSIMPLEQ_NEXT(head, var, field))
|
||||
|
||||
#define XSIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
|
||||
for ((var) = XSIMPLEQ_FIRST(head); \
|
||||
(var) && ((tvar) = XSIMPLEQ_NEXT(head, var, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
/*
|
||||
* XOR Simple queue functions.
|
||||
*/
|
||||
#define XSIMPLEQ_INIT(head) do { \
|
||||
arc4random_buf(&(head)->sqx_cookie, sizeof((head)->sqx_cookie)); \
|
||||
(head)->sqx_first = XSIMPLEQ_XOR(head, NULL); \
|
||||
(head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
|
||||
} while (0)
|
||||
|
||||
#define XSIMPLEQ_INSERT_HEAD(head, elm, field) do { \
|
||||
if (((elm)->field.sqx_next = (head)->sqx_first) == \
|
||||
XSIMPLEQ_XOR(head, NULL)) \
|
||||
(head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
|
||||
(head)->sqx_first = XSIMPLEQ_XOR(head, (elm)); \
|
||||
} while (0)
|
||||
|
||||
#define XSIMPLEQ_INSERT_TAIL(head, elm, field) do { \
|
||||
(elm)->field.sqx_next = XSIMPLEQ_XOR(head, NULL); \
|
||||
*(XSIMPLEQ_XOR(head, (head)->sqx_last)) = XSIMPLEQ_XOR(head, (elm)); \
|
||||
(head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
|
||||
} while (0)
|
||||
|
||||
#define XSIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
if (((elm)->field.sqx_next = (listelm)->field.sqx_next) == \
|
||||
XSIMPLEQ_XOR(head, NULL)) \
|
||||
(head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
|
||||
(listelm)->field.sqx_next = XSIMPLEQ_XOR(head, (elm)); \
|
||||
} while (0)
|
||||
|
||||
#define XSIMPLEQ_REMOVE_HEAD(head, field) do { \
|
||||
if (((head)->sqx_first = XSIMPLEQ_XOR(head, \
|
||||
(head)->sqx_first)->field.sqx_next) == XSIMPLEQ_XOR(head, NULL)) \
|
||||
(head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
|
||||
} while (0)
|
||||
|
||||
#define XSIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
|
||||
if (((elm)->field.sqx_next = XSIMPLEQ_XOR(head, \
|
||||
(elm)->field.sqx_next)->field.sqx_next) \
|
||||
== XSIMPLEQ_XOR(head, NULL)) \
|
||||
(head)->sqx_last = \
|
||||
XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
|
||||
} while (0)
|
||||
|
||||
|
||||
/*
|
||||
* Tail queue definitions.
|
||||
*/
|
||||
#define TAILQ_HEAD(name, type) \
|
||||
struct name { \
|
||||
struct type *tqh_first; /* first element */ \
|
||||
struct type **tqh_last; /* addr of last next element */ \
|
||||
}
|
||||
|
||||
#define TAILQ_HEAD_INITIALIZER(head) \
|
||||
{ NULL, &(head).tqh_first }
|
||||
|
||||
#define TAILQ_ENTRY(type) \
|
||||
struct { \
|
||||
struct type *tqe_next; /* next element */ \
|
||||
struct type **tqe_prev; /* address of previous next element */ \
|
||||
}
|
||||
|
||||
/*
|
||||
* tail queue access methods
|
||||
*/
|
||||
#define TAILQ_FIRST(head) ((head)->tqh_first)
|
||||
#define TAILQ_END(head) NULL
|
||||
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
||||
#define TAILQ_LAST(head, headname) \
|
||||
(*(((struct headname *)((head)->tqh_last))->tqh_last))
|
||||
/* XXX */
|
||||
#define TAILQ_PREV(elm, headname, field) \
|
||||
(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
|
||||
#define TAILQ_EMPTY(head) \
|
||||
(TAILQ_FIRST(head) == TAILQ_END(head))
|
||||
|
||||
#define TAILQ_FOREACH(var, head, field) \
|
||||
for((var) = TAILQ_FIRST(head); \
|
||||
(var) != TAILQ_END(head); \
|
||||
(var) = TAILQ_NEXT(var, field))
|
||||
|
||||
#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
|
||||
for ((var) = TAILQ_FIRST(head); \
|
||||
(var) != TAILQ_END(head) && \
|
||||
((tvar) = TAILQ_NEXT(var, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
|
||||
#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
||||
for((var) = TAILQ_LAST(head, headname); \
|
||||
(var) != TAILQ_END(head); \
|
||||
(var) = TAILQ_PREV(var, headname, field))
|
||||
|
||||
#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
|
||||
for ((var) = TAILQ_LAST(head, headname); \
|
||||
(var) != TAILQ_END(head) && \
|
||||
((tvar) = TAILQ_PREV(var, headname, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
/*
|
||||
* Tail queue functions.
|
||||
*/
|
||||
#define TAILQ_INIT(head) do { \
|
||||
(head)->tqh_first = NULL; \
|
||||
(head)->tqh_last = &(head)->tqh_first; \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_INSERT_HEAD(head, elm, field) do { \
|
||||
if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
|
||||
(head)->tqh_first->field.tqe_prev = \
|
||||
&(elm)->field.tqe_next; \
|
||||
else \
|
||||
(head)->tqh_last = &(elm)->field.tqe_next; \
|
||||
(head)->tqh_first = (elm); \
|
||||
(elm)->field.tqe_prev = &(head)->tqh_first; \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_INSERT_TAIL(head, elm, field) do { \
|
||||
(elm)->field.tqe_next = NULL; \
|
||||
(elm)->field.tqe_prev = (head)->tqh_last; \
|
||||
*(head)->tqh_last = (elm); \
|
||||
(head)->tqh_last = &(elm)->field.tqe_next; \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
|
||||
(elm)->field.tqe_next->field.tqe_prev = \
|
||||
&(elm)->field.tqe_next; \
|
||||
else \
|
||||
(head)->tqh_last = &(elm)->field.tqe_next; \
|
||||
(listelm)->field.tqe_next = (elm); \
|
||||
(elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
||||
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
||||
(elm)->field.tqe_next = (listelm); \
|
||||
*(listelm)->field.tqe_prev = (elm); \
|
||||
(listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_REMOVE(head, elm, field) do { \
|
||||
if (((elm)->field.tqe_next) != NULL) \
|
||||
(elm)->field.tqe_next->field.tqe_prev = \
|
||||
(elm)->field.tqe_prev; \
|
||||
else \
|
||||
(head)->tqh_last = (elm)->field.tqe_prev; \
|
||||
*(elm)->field.tqe_prev = (elm)->field.tqe_next; \
|
||||
_Q_INVALIDATE((elm)->field.tqe_prev); \
|
||||
_Q_INVALIDATE((elm)->field.tqe_next); \
|
||||
} while (0)
|
||||
|
||||
#define TAILQ_REPLACE(head, elm, elm2, field) do { \
|
||||
if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \
|
||||
(elm2)->field.tqe_next->field.tqe_prev = \
|
||||
&(elm2)->field.tqe_next; \
|
||||
else \
|
||||
(head)->tqh_last = &(elm2)->field.tqe_next; \
|
||||
(elm2)->field.tqe_prev = (elm)->field.tqe_prev; \
|
||||
*(elm2)->field.tqe_prev = (elm2); \
|
||||
_Q_INVALIDATE((elm)->field.tqe_prev); \
|
||||
_Q_INVALIDATE((elm)->field.tqe_next); \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
* Circular queue definitions.
|
||||
*/
|
||||
#define CIRCLEQ_HEAD(name, type) \
|
||||
struct name { \
|
||||
struct type *cqh_first; /* first element */ \
|
||||
struct type *cqh_last; /* last element */ \
|
||||
}
|
||||
|
||||
#define CIRCLEQ_HEAD_INITIALIZER(head) \
|
||||
{ CIRCLEQ_END(&head), CIRCLEQ_END(&head) }
|
||||
|
||||
#define CIRCLEQ_ENTRY(type) \
|
||||
struct { \
|
||||
struct type *cqe_next; /* next element */ \
|
||||
struct type *cqe_prev; /* previous element */ \
|
||||
}
|
||||
|
||||
/*
|
||||
* Circular queue access methods
|
||||
*/
|
||||
#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
|
||||
#define CIRCLEQ_LAST(head) ((head)->cqh_last)
|
||||
#define CIRCLEQ_END(head) ((void *)(head))
|
||||
#define CIRCLEQ_NEXT(elm, field) ((elm)->field.cqe_next)
|
||||
#define CIRCLEQ_PREV(elm, field) ((elm)->field.cqe_prev)
|
||||
#define CIRCLEQ_EMPTY(head) \
|
||||
(CIRCLEQ_FIRST(head) == CIRCLEQ_END(head))
|
||||
|
||||
#define CIRCLEQ_FOREACH(var, head, field) \
|
||||
for((var) = CIRCLEQ_FIRST(head); \
|
||||
(var) != CIRCLEQ_END(head); \
|
||||
(var) = CIRCLEQ_NEXT(var, field))
|
||||
|
||||
#define CIRCLEQ_FOREACH_SAFE(var, head, field, tvar) \
|
||||
for ((var) = CIRCLEQ_FIRST(head); \
|
||||
(var) != CIRCLEQ_END(head) && \
|
||||
((tvar) = CIRCLEQ_NEXT(var, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \
|
||||
for((var) = CIRCLEQ_LAST(head); \
|
||||
(var) != CIRCLEQ_END(head); \
|
||||
(var) = CIRCLEQ_PREV(var, field))
|
||||
|
||||
#define CIRCLEQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
|
||||
for ((var) = CIRCLEQ_LAST(head, headname); \
|
||||
(var) != CIRCLEQ_END(head) && \
|
||||
((tvar) = CIRCLEQ_PREV(var, headname, field), 1); \
|
||||
(var) = (tvar))
|
||||
|
||||
/*
|
||||
* Circular queue functions.
|
||||
*/
|
||||
#define CIRCLEQ_INIT(head) do { \
|
||||
(head)->cqh_first = CIRCLEQ_END(head); \
|
||||
(head)->cqh_last = CIRCLEQ_END(head); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
||||
(elm)->field.cqe_next = (listelm)->field.cqe_next; \
|
||||
(elm)->field.cqe_prev = (listelm); \
|
||||
if ((listelm)->field.cqe_next == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_last = (elm); \
|
||||
else \
|
||||
(listelm)->field.cqe_next->field.cqe_prev = (elm); \
|
||||
(listelm)->field.cqe_next = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \
|
||||
(elm)->field.cqe_next = (listelm); \
|
||||
(elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
|
||||
if ((listelm)->field.cqe_prev == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_first = (elm); \
|
||||
else \
|
||||
(listelm)->field.cqe_prev->field.cqe_next = (elm); \
|
||||
(listelm)->field.cqe_prev = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \
|
||||
(elm)->field.cqe_next = (head)->cqh_first; \
|
||||
(elm)->field.cqe_prev = CIRCLEQ_END(head); \
|
||||
if ((head)->cqh_last == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_last = (elm); \
|
||||
else \
|
||||
(head)->cqh_first->field.cqe_prev = (elm); \
|
||||
(head)->cqh_first = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \
|
||||
(elm)->field.cqe_next = CIRCLEQ_END(head); \
|
||||
(elm)->field.cqe_prev = (head)->cqh_last; \
|
||||
if ((head)->cqh_first == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_first = (elm); \
|
||||
else \
|
||||
(head)->cqh_last->field.cqe_next = (elm); \
|
||||
(head)->cqh_last = (elm); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_REMOVE(head, elm, field) do { \
|
||||
if ((elm)->field.cqe_next == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_last = (elm)->field.cqe_prev; \
|
||||
else \
|
||||
(elm)->field.cqe_next->field.cqe_prev = \
|
||||
(elm)->field.cqe_prev; \
|
||||
if ((elm)->field.cqe_prev == CIRCLEQ_END(head)) \
|
||||
(head)->cqh_first = (elm)->field.cqe_next; \
|
||||
else \
|
||||
(elm)->field.cqe_prev->field.cqe_next = \
|
||||
(elm)->field.cqe_next; \
|
||||
_Q_INVALIDATE((elm)->field.cqe_prev); \
|
||||
_Q_INVALIDATE((elm)->field.cqe_next); \
|
||||
} while (0)
|
||||
|
||||
#define CIRCLEQ_REPLACE(head, elm, elm2, field) do { \
|
||||
if (((elm2)->field.cqe_next = (elm)->field.cqe_next) == \
|
||||
CIRCLEQ_END(head)) \
|
||||
(head)->cqh_last = (elm2); \
|
||||
else \
|
||||
(elm2)->field.cqe_next->field.cqe_prev = (elm2); \
|
||||
if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) == \
|
||||
CIRCLEQ_END(head)) \
|
||||
(head)->cqh_first = (elm2); \
|
||||
else \
|
||||
(elm2)->field.cqe_prev->field.cqe_next = (elm2); \
|
||||
_Q_INVALIDATE((elm)->field.cqe_prev); \
|
||||
_Q_INVALIDATE((elm)->field.cqe_next); \
|
||||
} while (0)
|
||||
|
||||
#endif /* !_SYS_QUEUE_H_ */
|
||||
@@ -26,16 +26,11 @@
|
||||
#ifndef LIBUEV_UEV_H_
|
||||
#define LIBUEV_UEV_H_
|
||||
|
||||
#include "queue.h"
|
||||
#include <sys/queue.h>
|
||||
|
||||
/* Max. number of simulateneous events */
|
||||
#define UEV_MAX_EVENTS 10
|
||||
|
||||
/* Elapsed time between two times() tick measurements in msec */
|
||||
#define TIME_DIFF_MSEC(now, then) \
|
||||
( (now - then) / clock_tick * 1000 + \
|
||||
((now - then) % clock_tick) * 1000 / clock_tick )
|
||||
|
||||
/* Forward declare due to dependencys, don't try this at home. */
|
||||
struct uev;
|
||||
|
||||
|
||||
@@ -31,6 +31,16 @@
|
||||
|
||||
#include "libuev/uev.h"
|
||||
|
||||
static struct timespec msec2tspec(int msec)
|
||||
{
|
||||
struct timespec ts;
|
||||
|
||||
ts.tv_sec = msec / 1000;
|
||||
ts.tv_nsec = (msec % 1000) * 1000000;
|
||||
|
||||
return ts;
|
||||
}
|
||||
|
||||
static uev_io_t *new_watcher(uev_t *ctx, uev_type_t type, int fd, uev_dir_t dir, uev_cb_t *handler, void *data)
|
||||
{
|
||||
uev_io_t *w;
|
||||
@@ -98,13 +108,13 @@ int uev_io_delete(uev_t *ctx, uev_io_t *w)
|
||||
* @param timeout Timeout in milliseconds before @param handler is called
|
||||
* @param period For periodic timers this is the period time that @param timeout is reset to
|
||||
*
|
||||
* One-shot timers you likely set @param period to zero and only use
|
||||
* @param timeout. For periodic timers you likely set @param timeout to
|
||||
* either zero, to call it as soon as the event loop starts, or to the
|
||||
* same value as @param period. When the timer expires, the @param
|
||||
* handler is called, with the optional @param data argument. A
|
||||
* non-periodic timer ends its life there, while a periodic task's
|
||||
* @param timeout is reset to the @param period and restarted.
|
||||
* For one-shot timers you set @param period to zero and only use @param
|
||||
* timeout. For periodic timers you likely set @param timeout to either
|
||||
* zero, to call it as soon as the event loop starts, or to the same
|
||||
* value as @param period. When the timer expires, the @param handler
|
||||
* is called, with the optional @param data argument. A non-periodic
|
||||
* timer ends its life there, while a periodic task's @param timeout is
|
||||
* reset to the @param period and restarted.
|
||||
*
|
||||
* @return The new timer, or %NULL if invalid pointers or out or memory.
|
||||
*/
|
||||
@@ -118,13 +128,12 @@ uev_io_t *uev_timer_create(uev_t *ctx, uev_cb_t *handler, void *data, int timeou
|
||||
return NULL;
|
||||
|
||||
w = new_watcher(ctx, UEV_TIMER_TYPE, fd, UEV_DIR_INBOUND, handler, data);
|
||||
if (!w) {
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
if (!w)
|
||||
goto exit;
|
||||
|
||||
if (uev_timer_set(ctx, w, timeout, period)) {
|
||||
delete_watcher(ctx, w);
|
||||
exit:
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
@@ -137,16 +146,7 @@ uev_io_t *uev_timer_create(uev_t *ctx, uev_cb_t *handler, void *data, int timeou
|
||||
*/
|
||||
int uev_timer_set(uev_t *ctx, uev_io_t *w, int timeout, int period)
|
||||
{
|
||||
struct itimerspec time = {
|
||||
.it_value = {
|
||||
.tv_sec = timeout / 1000,
|
||||
.tv_nsec = (timeout % 1000) * 1000000
|
||||
},
|
||||
.it_interval = {
|
||||
.tv_sec = period / 1000,
|
||||
.tv_nsec = (period % 1000) * 1000000
|
||||
}
|
||||
};
|
||||
struct itimerspec time;
|
||||
|
||||
if (!ctx || !w) {
|
||||
errno = EINVAL;
|
||||
@@ -159,6 +159,9 @@ int uev_timer_set(uev_t *ctx, uev_io_t *w, int timeout, int period)
|
||||
if (!ctx->running)
|
||||
return 0;
|
||||
|
||||
time.it_value = msec2tspec(timeout);
|
||||
time.it_interval = msec2tspec(period);
|
||||
|
||||
return timerfd_settime(w->fd, 0, &time, NULL);
|
||||
}
|
||||
|
||||
@@ -189,15 +192,14 @@ uev_t *uev_ctx_create(void)
|
||||
return NULL;
|
||||
|
||||
ctx = (uev_t *)calloc(1, sizeof(*ctx));
|
||||
if (!ctx) {
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
if (!ctx)
|
||||
goto exit;
|
||||
|
||||
ctx->events = (struct epoll_event *)calloc(UEV_MAX_EVENTS, sizeof(struct epoll_event));
|
||||
if (!ctx->events) {
|
||||
close(fd);
|
||||
free(ctx);
|
||||
exit:
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@@ -212,10 +214,14 @@ uev_t *uev_ctx_create(void)
|
||||
*/
|
||||
void uev_ctx_delete(uev_t *ctx)
|
||||
{
|
||||
uev_io_t *w, *tmp;
|
||||
while (!LIST_EMPTY(&ctx->watchers)) {
|
||||
uev_io_t *w = LIST_FIRST(&ctx->watchers);
|
||||
|
||||
LIST_FOREACH_SAFE(w, &ctx->watchers, link, tmp)
|
||||
delete_watcher(ctx, w);
|
||||
if (UEV_TIMER_TYPE == w->type)
|
||||
uev_timer_delete(ctx, w);
|
||||
else
|
||||
uev_io_delete(ctx, w);
|
||||
}
|
||||
|
||||
close(ctx->efd);
|
||||
free(ctx->events);
|
||||
@@ -232,7 +238,7 @@ int uev_run(uev_t *ctx)
|
||||
|
||||
if (!ctx) {
|
||||
errno = EINVAL;
|
||||
return 1;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Start the event loop */
|
||||
@@ -251,26 +257,22 @@ int uev_run(uev_t *ctx)
|
||||
if (EINTR == errno)
|
||||
continue; /* Signalled, try again */
|
||||
|
||||
/* Error in poll. Cannot continue */
|
||||
result = 2;
|
||||
result = -1;
|
||||
ctx->running = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
for (i = 0; i < nfds; i++) {
|
||||
uev_io_t *w = (uev_io_t *)ctx->events[i].data.ptr;
|
||||
w = (uev_io_t *)ctx->events[i].data.ptr;
|
||||
|
||||
if (w->handler)
|
||||
w->handler((struct uev *)ctx, w, w->data);
|
||||
|
||||
if (UEV_TIMER_TYPE == w->type) {
|
||||
int result;
|
||||
uint64_t exp;
|
||||
|
||||
result = read(w->fd, &exp, sizeof(exp));
|
||||
if (result != sizeof(exp)) {
|
||||
/* Error in timerfd. Cannot continue */
|
||||
result = 3;
|
||||
if (read(w->fd, &exp, sizeof(exp)) != sizeof(exp)) {
|
||||
result = -1;
|
||||
ctx->running = 0;
|
||||
}
|
||||
|
||||
@@ -280,8 +282,6 @@ int uev_run(uev_t *ctx)
|
||||
}
|
||||
}
|
||||
|
||||
ctx->running = 0;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user