| 1 | /* |
| 2 | * Common Trace Format |
| 3 | * |
| 4 | * Enumeration mapping strings (quarks) from/to integers. |
| 5 | * |
| 6 | * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include <ctf/ctf-types.h> |
| 24 | #include <stdint.h> |
| 25 | #include <glib.h> |
| 26 | |
| 27 | struct enum_table { |
| 28 | GHashTable *value_to_quark; /* Tuples (value, GQuark) */ |
| 29 | GHashTable *quark_to_value; /* Tuples (GQuark, value) */ |
| 30 | }; |
| 31 | |
| 32 | #if (__WORDSIZE == 32) |
| 33 | GQuark enum_uint_to_quark(const struct enum_table *table, uint64_t v) |
| 34 | { |
| 35 | gconstpointer q = g_hash_table_lookup(table->value_to_quark, &v); |
| 36 | return (GQuark) (unsigned long) q; |
| 37 | } |
| 38 | |
| 39 | GQuark enum_int_to_quark(const struct enum_table *table, uint64_t v) |
| 40 | { |
| 41 | gconstpointer q = g_hash_table_lookup(table->value_to_quark, &v); |
| 42 | return (GQuark) (unsigned long) q; |
| 43 | } |
| 44 | |
| 45 | uint64_t enum_quark_to_uint(size_t len, int byte_order, GQuark q) |
| 46 | { |
| 47 | gconstpointer v = g_hash_table_lookup(table->quark_to_value, |
| 48 | (gconstpointer) q); |
| 49 | return *(const uint64_t *) v; |
| 50 | } |
| 51 | |
| 52 | int64_t enum_quark_to_int(size_t len, int byte_order, GQuark q) |
| 53 | { |
| 54 | gconstpointer v = g_hash_table_lookup(table->quark_to_value, |
| 55 | (gconstpointer) q); |
| 56 | return *(const int64_t *) v; |
| 57 | } |
| 58 | |
| 59 | guint enum_val_hash(gconstpointer key) |
| 60 | { |
| 61 | int64_t ukey = *(const int64_t *)key; |
| 62 | |
| 63 | return (guint)ukey ^ (guint)(ukey >> 32); |
| 64 | } |
| 65 | |
| 66 | gboolean enum_val_equal(gconstpointer a, gconstpointer b) |
| 67 | { |
| 68 | int64_t ua = *(const int64_t *)a; |
| 69 | int64_t ub = *(const int64_t *)b; |
| 70 | |
| 71 | return ua == ub; |
| 72 | } |
| 73 | |
| 74 | void enum_val_free(void *ptr) |
| 75 | { |
| 76 | g_free(ptr); |
| 77 | } |
| 78 | |
| 79 | void enum_signed_insert(struct enum_table *table, int64_t v, GQuark q) |
| 80 | { |
| 81 | int64_t *valuep = g_new(int64_t, 1); |
| 82 | |
| 83 | g_hash_table_insert(table->value_to_quark, valuep, |
| 84 | (gpointer) (unsigned long) q); |
| 85 | g_hash_table_insert(table->quark_to_value, (gpointer) (unsigned long) q, |
| 86 | valuep); |
| 87 | } |
| 88 | |
| 89 | void enum_unsigned_insert(struct enum_table *table, uint64_t v, GQuark q) |
| 90 | { |
| 91 | uint64_t *valuep = g_new(uint64_t, 1); |
| 92 | |
| 93 | g_hash_table_insert(table->value_to_quark, valuep, |
| 94 | (gpointer) (unsigned long) q); |
| 95 | g_hash_table_insert(table->quark_to_value, (gpointer) (unsigned long) q, |
| 96 | valuep); |
| 97 | } |
| 98 | #else /* __WORDSIZE != 32 */ |
| 99 | GQuark enum_uint_to_quark(const struct enum_table *table, uint64_t v) |
| 100 | { |
| 101 | gconstpointer q = g_hash_table_lookup(table->value_to_quark, |
| 102 | (gconstpointer) v); |
| 103 | return (GQuark) (unsigned long) q; |
| 104 | } |
| 105 | |
| 106 | GQuark enum_int_to_quark(const struct enum_table *table, uint64_t v) |
| 107 | { |
| 108 | gconstpointer q = g_hash_table_lookup(table->value_to_quark, |
| 109 | (gconstpointer) v); |
| 110 | return (GQuark) (unsigned long) q; |
| 111 | } |
| 112 | |
| 113 | uint64_t enum_quark_to_uint(size_t len, int byte_order, GQuark q) |
| 114 | { |
| 115 | gconstpointer v = g_hash_table_lookup(table->quark_to_value, |
| 116 | (gconstpointer) (unsigned long) q); |
| 117 | return *(const uint64_t *) v; |
| 118 | } |
| 119 | |
| 120 | int64_t enum_quark_to_int(size_t len, int byte_order, GQuark q) |
| 121 | { |
| 122 | gconstpointer v = g_hash_table_lookup(table->quark_to_value, |
| 123 | (gconstpointer) (unsigned long) q); |
| 124 | return *(const int64_t *) v; |
| 125 | } |
| 126 | |
| 127 | guint enum_val_hash(gconstpointer key) |
| 128 | { |
| 129 | return g_direct_hash(key); |
| 130 | } |
| 131 | |
| 132 | gboolean enum_val_equal(gconstpointer a, gconstpointer b) |
| 133 | { |
| 134 | return g_direct_equal(a, b); |
| 135 | } |
| 136 | |
| 137 | void enum_val_free(void *ptr) |
| 138 | { |
| 139 | } |
| 140 | |
| 141 | void enum_signed_insert(struct enum_table *table, int64_t v, GQuark q) |
| 142 | { |
| 143 | g_hash_table_insert(table->value_to_quark, (gpointer) v, |
| 144 | (gpointer) (unsigned long) q); |
| 145 | g_hash_table_insert(table->quark_to_value, (gpointer) (unsigned long) q, |
| 146 | valuep); |
| 147 | } |
| 148 | |
| 149 | void enum_unsigned_insert(struct enum_table *table, uint64_t v, GQuark q) |
| 150 | { |
| 151 | g_hash_table_insert(table->value_to_quark, (gpointer) v, |
| 152 | (gpointer) (unsigned long) q); |
| 153 | g_hash_table_insert(table->quark_to_value, (gpointer) (unsigned long) q, |
| 154 | valuep); |
| 155 | } |
| 156 | #endif /* __WORDSIZE != 32 */ |
| 157 | |
| 158 | struct enum_table *enum_new(void) |
| 159 | { |
| 160 | struct enum_table *table; |
| 161 | |
| 162 | table = g_new(struct enum_table, 1); |
| 163 | table->value_to_quark = g_hash_table(enum_val_hash, enum_val_equal); |
| 164 | table->quark_to_value = g_hash_table_new_full(g_direct_hash, |
| 165 | g_direct_equal, |
| 166 | NULL, enum_val_free); |
| 167 | } |
| 168 | |
| 169 | void enum_destroy(struct enum_table *table) |
| 170 | { |
| 171 | g_hash_table_destroy(table->value_to_quark); |
| 172 | g_hash_table_destroy(table->quark_to_value); |
| 173 | g_free(table); |
| 174 | } |