| /* |
| * Copyright 2008-2009 Katholieke Universiteit Leuven |
| * |
| * Use of this software is governed by the GNU LGPLv2.1 license |
| * |
| * Written by Sven Verdoolaege, K.U.Leuven, Departement |
| * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium |
| */ |
| |
| #include <string.h> |
| #include <isl_ctx_private.h> |
| #include "isl_name.h" |
| |
| struct isl_name *isl_name_alloc(struct isl_ctx *ctx, const char *s) |
| { |
| const char *copy = strdup(s); |
| struct isl_name *name; |
| |
| if (!copy) |
| return NULL; |
| name = isl_alloc_type(ctx, struct isl_name); |
| if (!name) |
| goto error; |
| |
| name->ref = 1; |
| name->name = copy; |
| |
| name->hash = isl_hash_init(); |
| name->hash = isl_hash_string(name->hash, s); |
| |
| return name; |
| error: |
| free((char *)copy); |
| return NULL; |
| } |
| |
| static int isl_name_has_name(const void *entry, const void *val) |
| { |
| struct isl_name *name = (struct isl_name *)entry; |
| const char *s = (const char *)val; |
| |
| return !strcmp(name->name, s); |
| } |
| |
| struct isl_name *isl_name_get(struct isl_ctx *ctx, const char *name) |
| { |
| struct isl_hash_table_entry *entry; |
| uint32_t name_hash; |
| |
| name_hash = isl_hash_string(isl_hash_init(), name); |
| entry = isl_hash_table_find(ctx, &ctx->name_hash, name_hash, |
| isl_name_has_name, name, 1); |
| if (!entry) |
| return NULL; |
| if (entry->data) |
| return isl_name_copy(ctx, entry->data); |
| entry->data = isl_name_alloc(ctx, name); |
| if (!entry->data) |
| ctx->name_hash.n--; |
| return entry->data; |
| } |
| |
| struct isl_name *isl_name_copy(struct isl_ctx *ctx, struct isl_name *name) |
| { |
| if (!name) |
| return NULL; |
| |
| name->ref++; |
| return name; |
| } |
| |
| static int isl_name_eq(const void *entry, const void *name) |
| { |
| return entry == name; |
| } |
| |
| uint32_t isl_hash_name(uint32_t hash, struct isl_name *name) |
| { |
| if (name) |
| isl_hash_hash(hash, name->hash); |
| |
| return hash; |
| } |
| |
| void isl_name_free(struct isl_ctx *ctx, struct isl_name *name) |
| { |
| uint32_t name_hash; |
| struct isl_hash_table_entry *entry; |
| |
| if (!name) |
| return; |
| |
| if (--name->ref > 0) |
| return; |
| |
| name_hash = isl_hash_string(isl_hash_init(), name->name); |
| entry = isl_hash_table_find(ctx, &ctx->name_hash, name_hash, |
| isl_name_eq, name, 0); |
| isl_assert(ctx, entry, return); |
| isl_hash_table_remove(ctx, &ctx->name_hash, entry); |
| |
| free((char *)name->name); |
| free(name); |
| } |