1 /* 2 * Copyright 2011-2015 Samy Al Bahra. 3 * Copyright 2011 David Joseph. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef CK_BARRIER_H 29 #define CK_BARRIER_H 30 31 #include <ck_spinlock.h> 32 33 struct ck_barrier_centralized { 34 unsigned int value; 35 unsigned int sense; 36 }; 37 typedef struct ck_barrier_centralized ck_barrier_centralized_t; 38 39 struct ck_barrier_centralized_state { 40 unsigned int sense; 41 }; 42 typedef struct ck_barrier_centralized_state ck_barrier_centralized_state_t; 43 44 #define CK_BARRIER_CENTRALIZED_INITIALIZER {0, 0} 45 #define CK_BARRIER_CENTRALIZED_STATE_INITIALIZER {0} 46 47 void ck_barrier_centralized(ck_barrier_centralized_t *, 48 ck_barrier_centralized_state_t *, unsigned int); 49 50 struct ck_barrier_combining_group { 51 unsigned int k; 52 unsigned int count; 53 unsigned int sense; 54 struct ck_barrier_combining_group *parent; 55 struct ck_barrier_combining_group *left; 56 struct ck_barrier_combining_group *right; 57 struct ck_barrier_combining_group *next; 58 } CK_CC_CACHELINE; 59 typedef struct ck_barrier_combining_group ck_barrier_combining_group_t; 60 61 struct ck_barrier_combining_state { 62 unsigned int sense; 63 }; 64 typedef struct ck_barrier_combining_state ck_barrier_combining_state_t; 65 66 #define CK_BARRIER_COMBINING_STATE_INITIALIZER {~0} 67 68 struct ck_barrier_combining { 69 struct ck_barrier_combining_group *root; 70 ck_spinlock_fas_t mutex; 71 }; 72 typedef struct ck_barrier_combining ck_barrier_combining_t; 73 74 void ck_barrier_combining_init(ck_barrier_combining_t *, ck_barrier_combining_group_t *); 75 76 void ck_barrier_combining_group_init(ck_barrier_combining_t *, 77 ck_barrier_combining_group_t *, unsigned int); 78 79 void ck_barrier_combining(ck_barrier_combining_t *, 80 ck_barrier_combining_group_t *, 81 ck_barrier_combining_state_t *); 82 83 struct ck_barrier_dissemination_flag { 84 unsigned int tflag; 85 unsigned int *pflag; 86 }; 87 typedef struct ck_barrier_dissemination_flag ck_barrier_dissemination_flag_t; 88 89 struct ck_barrier_dissemination { 90 unsigned int nthr; 91 unsigned int size; 92 unsigned int tid; 93 struct ck_barrier_dissemination_flag *flags[2]; 94 }; 95 typedef struct ck_barrier_dissemination ck_barrier_dissemination_t; 96 97 struct ck_barrier_dissemination_state { 98 int parity; 99 unsigned int sense; 100 unsigned int tid; 101 }; 102 typedef struct ck_barrier_dissemination_state ck_barrier_dissemination_state_t; 103 104 void ck_barrier_dissemination_init(ck_barrier_dissemination_t *, 105 ck_barrier_dissemination_flag_t **, unsigned int); 106 107 void ck_barrier_dissemination_subscribe(ck_barrier_dissemination_t *, 108 ck_barrier_dissemination_state_t *); 109 110 unsigned int ck_barrier_dissemination_size(unsigned int); 111 112 void ck_barrier_dissemination(ck_barrier_dissemination_t *, 113 ck_barrier_dissemination_state_t *); 114 115 struct ck_barrier_tournament_round { 116 int role; 117 unsigned int *opponent; 118 unsigned int flag; 119 }; 120 typedef struct ck_barrier_tournament_round ck_barrier_tournament_round_t; 121 122 struct ck_barrier_tournament { 123 unsigned int tid; 124 unsigned int size; 125 struct ck_barrier_tournament_round **rounds; 126 }; 127 typedef struct ck_barrier_tournament ck_barrier_tournament_t; 128 129 struct ck_barrier_tournament_state { 130 unsigned int sense; 131 unsigned int vpid; 132 }; 133 typedef struct ck_barrier_tournament_state ck_barrier_tournament_state_t; 134 135 void ck_barrier_tournament_subscribe(ck_barrier_tournament_t *, 136 ck_barrier_tournament_state_t *); 137 void ck_barrier_tournament_init(ck_barrier_tournament_t *, 138 ck_barrier_tournament_round_t **, 139 unsigned int); 140 unsigned int ck_barrier_tournament_size(unsigned int); 141 void ck_barrier_tournament(ck_barrier_tournament_t *, ck_barrier_tournament_state_t *); 142 143 struct ck_barrier_mcs { 144 unsigned int tid; 145 unsigned int *children[2]; 146 unsigned int childnotready[4]; 147 unsigned int dummy; 148 unsigned int havechild[4]; 149 unsigned int *parent; 150 unsigned int parentsense; 151 }; 152 typedef struct ck_barrier_mcs ck_barrier_mcs_t; 153 154 struct ck_barrier_mcs_state { 155 unsigned int sense; 156 unsigned int vpid; 157 }; 158 typedef struct ck_barrier_mcs_state ck_barrier_mcs_state_t; 159 160 void ck_barrier_mcs_init(ck_barrier_mcs_t *, unsigned int); 161 void ck_barrier_mcs_subscribe(ck_barrier_mcs_t *, ck_barrier_mcs_state_t *); 162 void ck_barrier_mcs(ck_barrier_mcs_t *, ck_barrier_mcs_state_t *); 163 164 #endif /* CK_BARRIER_H */ 165