1 /* 2 * ngtcp2 3 * 4 * Copyright (c) 2022 ngtcp2 contributors 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining 7 * a copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sublicense, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be 15 * included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 #ifndef NGTCP2_OPL_H 26 #define NGTCP2_OPL_H 27 28 #ifdef HAVE_CONFIG_H 29 # include <config.h> 30 #endif /* HAVE_CONFIG_H */ 31 32 #include <ngtcp2/ngtcp2.h> 33 34 typedef struct ngtcp2_opl_entry ngtcp2_opl_entry; 35 36 struct ngtcp2_opl_entry { 37 ngtcp2_opl_entry *next; 38 }; 39 40 /* 41 * ngtcp2_opl is an object memory pool. 42 */ 43 typedef struct ngtcp2_opl { 44 ngtcp2_opl_entry *head; 45 } ngtcp2_opl; 46 47 /* 48 * ngtcp2_opl_init initializes |opl|. 49 */ 50 void ngtcp2_opl_init(ngtcp2_opl *opl); 51 52 /* 53 * ngtcp2_opl_push inserts |ent| to |opl| head. 54 */ 55 void ngtcp2_opl_push(ngtcp2_opl *opl, ngtcp2_opl_entry *ent); 56 57 /* 58 * ngtcp2_opl_pop removes the first ngtcp2_opl_entry from |opl| and 59 * returns it. If |opl| does not have any entry, it returns NULL. 60 */ 61 ngtcp2_opl_entry *ngtcp2_opl_pop(ngtcp2_opl *opl); 62 63 void ngtcp2_opl_clear(ngtcp2_opl *opl); 64 65 #endif /* NGTCP2_OPL_H */ 66