X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Finclude%2Frte_tailq.h;h=6ac4b9b6a3b171e5baae411cdfbebdfb0202e0fb;hb=f6b4f6c9c123e4c537e868b1bc7fee07730ad306;hp=00d4a3c7b18c77430f670b4fa7c2b1e8c63cd26b;hpb=b6df9fc8715f9a925136006b18fdd65f9c621757;p=dpdk.git diff --git a/lib/librte_eal/common/include/rte_tailq.h b/lib/librte_eal/common/include/rte_tailq.h index 00d4a3c7b1..6ac4b9b6a3 100644 --- a/lib/librte_eal/common/include/rte_tailq.h +++ b/lib/librte_eal/common/include/rte_tailq.h @@ -1,35 +1,34 @@ /*- * BSD LICENSE - * - * Copyright(c) 2010-2013 Intel Corporation. All rights reserved. + * + * 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 + * + * 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 + * + * * 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 + * * 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 + * * 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 + * + * 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 _RTE_TAILQ_H_ @@ -46,13 +45,15 @@ extern "C" { #endif #include +#include /** dummy structure type used by the rte_tailq APIs */ -struct rte_dummy { - TAILQ_ENTRY(rte_dummy) next; /**< Pointer entries for a tailq list */ +struct rte_tailq_entry { + TAILQ_ENTRY(rte_tailq_entry) next; /**< Pointer entries for a tailq list */ + void *data; /**< Pointer to the data referenced by this tailq entry */ }; /** dummy */ -TAILQ_HEAD(rte_dummy_head, rte_dummy); +TAILQ_HEAD(rte_tailq_entry_head, rte_tailq_entry); #define RTE_TAILQ_NAMESIZE 32 @@ -65,9 +66,15 @@ TAILQ_HEAD(rte_dummy_head, rte_dummy); * a multi-process app to find already-created elements in shared memory. */ struct rte_tailq_head { - struct rte_dummy_head tailq_head; /**< NOTE: must be first element */ + struct rte_tailq_entry_head tailq_head; /**< NOTE: must be first element */ }; +/** + * Return the first tailq entry casted to the right struct. + */ +#define RTE_TAILQ_CAST(tailq_entry, struct_name) \ + (struct struct_name *)&(tailq_entry)->tailq_head + /** * Utility macro to make reserving a tailqueue for a particular struct easier. * @@ -85,7 +92,7 @@ struct rte_tailq_head { * element in the rte_tailq_head structure. */ #define RTE_TAILQ_RESERVE(name, struct_name) \ - (struct struct_name *)(&rte_eal_tailq_reserve(name)->tailq_head) + RTE_TAILQ_CAST(rte_eal_tailq_reserve(name), struct_name) /** * Utility macro to make reserving a tailqueue for a particular struct easier. @@ -105,7 +112,7 @@ struct rte_tailq_head { * element in the rte_tailq_head structure. */ #define RTE_TAILQ_RESERVE_BY_IDX(idx, struct_name) \ - (struct struct_name *)(&rte_eal_tailq_reserve_by_idx(idx)->tailq_head) + RTE_TAILQ_CAST(rte_eal_tailq_reserve_by_idx(idx), struct_name) /** * Utility macro to make looking up a tailqueue for a particular struct easier. @@ -124,7 +131,7 @@ struct rte_tailq_head { * element in the rte_tailq_head structure. */ #define RTE_TAILQ_LOOKUP(name, struct_name) \ - (struct struct_name *)(&rte_eal_tailq_lookup(name)->tailq_head) + RTE_TAILQ_CAST(rte_eal_tailq_lookup(name), struct_name) /** * Utility macro to make looking up a tailqueue for a particular struct easier. @@ -143,7 +150,7 @@ struct rte_tailq_head { * element in the rte_tailq_head structure. */ #define RTE_TAILQ_LOOKUP_BY_IDX(idx, struct_name) \ - (struct struct_name *)(&rte_eal_tailq_lookup_by_idx(idx)->tailq_head) + RTE_TAILQ_CAST(rte_eal_tailq_lookup_by_idx(idx), struct_name) /** * Reserve a slot in the tailq list for a particular tailq header @@ -171,8 +178,11 @@ struct rte_tailq_head *rte_eal_tailq_reserve_by_idx(const unsigned idx); /** * Dump tail queues to the console. + * + * @param f + * A pointer to a file for output */ -void rte_dump_tailq(void); +void rte_dump_tailq(FILE *f); /** * Lookup for a tail queue.