+++ /dev/null
-/* Copyright (c) 2004-2021. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-/* Warning, this module is done to be efficient and performs tons of
- cast and dirty things. So avoid using it unless you really know
- what you are doing. */
-
-/* This type should be added to a type that is to be used in such a swag */
-
-#include "swag.h"
-#include "xbt/asserts.h"
-
-typedef s_xbt_swag_hookup_t *xbt_swag_hookup_t;
-typedef struct xbt_swag* xbt_swag_t;
-typedef const struct xbt_swag* const_xbt_swag_t;
-
-#define xbt_swag_getPrev(obj, offset) (((xbt_swag_hookup_t)(((char*)(obj)) + (offset)))->prev)
-#define xbt_swag_getNext(obj, offset) (((xbt_swag_hookup_t)(((char*)(obj)) + (offset)))->next)
-#define xbt_swag_belongs(obj, swag) (xbt_swag_getNext((obj), (swag)->offset) || (swag)->tail == (obj))
-
-static inline void *xbt_swag_getFirst(const_xbt_swag_t swag)
-{
- return swag->head;
-}
-
-/*
- * @brief Offset computation
- * @arg var a variable of type <tt>struct</tt> something
- * @arg field a field of <tt>struct</tt> something
- * @return the offset of @a field in <tt>struct</tt> something.
- * @hideinitializer
- *
- * It is very similar to offsetof except that is done at runtime and that you have to declare a variable. Why defining
- * such a macro then ? Because it is portable...
- */
-#define xbt_swag_offset(var, field) ((char*)&((var).field) - (char*)&(var))
-/* @} */
-
-/* Creates a new swag.
- * @param swag the swag to initialize
- * @param offset where the hookup is located in the structure
- * @see xbt_swag_offset
- *
- * Usage : xbt_swag_init(swag,&obj.setA-&obj);
- */
-static inline void xbt_swag_init(xbt_swag_t swag, size_t offset)
-{
- swag->tail = NULL;
- swag->head = NULL;
- swag->offset = offset;
- swag->count = 0;
-}
-
-/*
- * @param obj the object to insert in the swag
- * @param swag a swag
- *
- * insert (at the tail... you probably had a very good reason to do that, I hope you know what you're doing) @a obj in
- * @a swag
- */
-static inline void xbt_swag_insert(void *obj, xbt_swag_t swag)
-{
- xbt_assert(!xbt_swag_belongs(obj, swag) || swag->tail,
- "This object belongs to an empty swag! Did you correctly initialize the object's hookup?");
-
- if (!swag->head) {
- xbt_assert(!(swag->tail), "Inconsistent swag.");
- swag->head = obj;
- swag->tail = obj;
- swag->count++;
- } else if (obj != swag->tail && !xbt_swag_getNext(obj, swag->offset)) {
- xbt_swag_getPrev(obj, swag->offset) = swag->tail;
- xbt_swag_getNext(swag->tail, swag->offset) = obj;
- swag->tail = obj;
- swag->count++;
- }
-}
-
-/*
- * @param obj the object to remove from the swag
- * @param swag a swag
- * @return @a obj if it was in the @a swag and NULL otherwise
- *
- * removes @a obj from @a swag
- */
-static inline void *xbt_swag_remove(void *obj, xbt_swag_t swag)
-{
- if (!obj)
- return NULL;
-
- size_t offset = swag->offset;
- void* prev = xbt_swag_getPrev(obj, offset);
- void* next = xbt_swag_getNext(obj, offset);
-
- if (prev) {
- xbt_swag_getNext(prev, offset) = next;
- xbt_swag_getPrev(obj, offset) = NULL;
- if (next) {
- xbt_swag_getPrev(next, offset) = prev;
- xbt_swag_getNext(obj, offset) = NULL;
- } else {
- swag->tail = prev;
- }
- swag->count--;
- } else if (next) {
- xbt_swag_getPrev(next, offset) = NULL;
- xbt_swag_getNext(obj, offset) = NULL;
- swag->head = next;
- swag->count--;
- } else if (obj == swag->head) {
- swag->head = swag->tail = NULL;
- swag->count--;
- }
-
- return obj;
-}
-
-/*
- * @param swag a swag
- * @return the number of objects in @a swag
- */
-static inline int xbt_swag_size(const_xbt_swag_t swag)
-{
- return swag->count;
-}
