diff options
Diffstat (limited to 'src/dpdk_lib18/librte_malloc/malloc_elem.h')
| -rwxr-xr-x | src/dpdk_lib18/librte_malloc/malloc_elem.h | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/src/dpdk_lib18/librte_malloc/malloc_elem.h b/src/dpdk_lib18/librte_malloc/malloc_elem.h deleted file mode 100755 index 9790b1a0..00000000 --- a/src/dpdk_lib18/librte_malloc/malloc_elem.h +++ /dev/null @@ -1,190 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT - * OWNER 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. - */ - -#ifndef MALLOC_ELEM_H_ -#define MALLOC_ELEM_H_ - -#include <rte_memory.h> - -/* dummy definition of struct so we can use pointers to it in malloc_elem struct */ -struct malloc_heap; - -enum elem_state { - ELEM_FREE = 0, - ELEM_BUSY, - ELEM_PAD /* element is a padding-only header */ -}; - -struct malloc_elem { - struct malloc_heap *heap; - struct malloc_elem *volatile prev; /* points to prev elem in memzone */ - LIST_ENTRY(malloc_elem) free_list; /* list of free elements in heap */ - const struct rte_memzone *mz; - volatile enum elem_state state; - uint32_t pad; - size_t size; -#ifdef RTE_LIBRTE_MALLOC_DEBUG - uint64_t header_cookie; /* Cookie marking start of data */ - /* trailer cookie at start + size */ -#endif -} __rte_cache_aligned; - -#ifndef RTE_LIBRTE_MALLOC_DEBUG -static const unsigned MALLOC_ELEM_TRAILER_LEN = 0; - -/* dummy function - just check if pointer is non-null */ -static inline int -malloc_elem_cookies_ok(const struct malloc_elem *elem){ return elem != NULL; } - -/* dummy function - no header if malloc_debug is not enabled */ -static inline void -set_header(struct malloc_elem *elem __rte_unused){ } - -/* dummy function - no trailer if malloc_debug is not enabled */ -static inline void -set_trailer(struct malloc_elem *elem __rte_unused){ } - - -#else -static const unsigned MALLOC_ELEM_TRAILER_LEN = RTE_CACHE_LINE_SIZE; - -#define MALLOC_HEADER_COOKIE 0xbadbadbadadd2e55ULL /**< Header cookie. */ -#define MALLOC_TRAILER_COOKIE 0xadd2e55badbadbadULL /**< Trailer cookie.*/ - -/* define macros to make referencing the header and trailer cookies easier */ -#define MALLOC_ELEM_TRAILER(elem) (*((uint64_t*)RTE_PTR_ADD(elem, \ - elem->size - MALLOC_ELEM_TRAILER_LEN))) -#define MALLOC_ELEM_HEADER(elem) (elem->header_cookie) - -static inline void -set_header(struct malloc_elem *elem) -{ - if (elem != NULL) - MALLOC_ELEM_HEADER(elem) = MALLOC_HEADER_COOKIE; -} - -static inline void -set_trailer(struct malloc_elem *elem) -{ - if (elem != NULL) - MALLOC_ELEM_TRAILER(elem) = MALLOC_TRAILER_COOKIE; -} - -/* check that the header and trailer cookies are set correctly */ -static inline int -malloc_elem_cookies_ok(const struct malloc_elem *elem) -{ - return (elem != NULL && - MALLOC_ELEM_HEADER(elem) == MALLOC_HEADER_COOKIE && - MALLOC_ELEM_TRAILER(elem) == MALLOC_TRAILER_COOKIE); -} - -#endif - -static const unsigned MALLOC_ELEM_HEADER_LEN = sizeof(struct malloc_elem); -#define MALLOC_ELEM_OVERHEAD (MALLOC_ELEM_HEADER_LEN + MALLOC_ELEM_TRAILER_LEN) - -/* - * Given a pointer to the start of a memory block returned by malloc, get - * the actual malloc_elem header for that block. - */ -static inline struct malloc_elem * -malloc_elem_from_data(const void *data) -{ - if (data == NULL) - return NULL; - - struct malloc_elem *elem = RTE_PTR_SUB(data, MALLOC_ELEM_HEADER_LEN); - if (!malloc_elem_cookies_ok(elem)) - return NULL; - return elem->state != ELEM_PAD ? elem: RTE_PTR_SUB(elem, elem->pad); -} - -/* - * initialise a malloc_elem header - */ -void -malloc_elem_init(struct malloc_elem *elem, - struct malloc_heap *heap, - const struct rte_memzone *mz, - size_t size); - -/* - * initialise a dummy malloc_elem header for the end-of-memzone marker - */ -void -malloc_elem_mkend(struct malloc_elem *elem, - struct malloc_elem *prev_free); - -/* - * return true if the current malloc_elem can hold a block of data - * of the requested size and with the requested alignment - */ -int -malloc_elem_can_hold(struct malloc_elem *elem, size_t size, unsigned align); - -/* - * reserve a block of data in an existing malloc_elem. If the malloc_elem - * is much larger than the data block requested, we split the element in two. - */ -struct malloc_elem * -malloc_elem_alloc(struct malloc_elem *elem, size_t size, unsigned align); - -/* - * free a malloc_elem block by adding it to the free list. If the - * blocks either immediately before or immediately after newly freed block - * are also free, the blocks are merged together. - */ -int -malloc_elem_free(struct malloc_elem *elem); - -/* - * attempt to resize a malloc_elem by expanding into any free space - * immediately after it in memory. - */ -int -malloc_elem_resize(struct malloc_elem *elem, size_t size); - -/* - * Given an element size, compute its freelist index. - */ -size_t -malloc_elem_free_list_index(size_t size); - -/* - * Add element to its heap's free list. - */ -void -malloc_elem_free_list_insert(struct malloc_elem *elem); - -#endif /* MALLOC_ELEM_H_ */ |