mirror of
https://git.proxmox.com/git/wasi-libc
synced 2025-07-03 09:55:14 +00:00
320054e84f
This incoporates pieces from musl-libc, cloudlibc, cloudabi, libpreopen, and dlmalloc, as well as a significant amount of new code.
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
/*-
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* Copyright (c) 2016 Stanley Uche Godfrey
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* Copyright (c) 2016, 2018 Jonathan Anderson
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* All rights reserved.
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*
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* This software was developed at Memorial University under the
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* NSERC Discovery program (RGPIN-2015-06048).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* @file po_map.c
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* @brief Implementation of po_map management functions
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "internal.h"
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#ifdef __wasilibc_unmodified_upstream
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#else
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static
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#endif
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struct po_map*
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po_map_create(int capacity)
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{
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struct po_map *map;
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map = malloc(sizeof(struct po_map));
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if (map == NULL) {
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return (NULL);
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}
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map->entries = calloc(sizeof(struct po_map_entry), capacity);
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if (map->entries == NULL) {
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free(map);
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return (NULL);
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}
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map->refcount = 1;
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map->capacity = capacity;
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map->length = 0;
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po_map_assertvalid(map);
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return (map);
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}
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#ifdef __wasilibc_unmodified_upstream
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#else
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static
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#endif
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struct po_map*
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po_map_enlarge(struct po_map *map)
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{
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struct po_map_entry *enlarged;
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enlarged = calloc(sizeof(struct po_map_entry), 2 * map->capacity);
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if (enlarged == NULL) {
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return (NULL);
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}
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memcpy(enlarged, map->entries, map->length * sizeof(*enlarged));
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free(map->entries);
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map->entries = enlarged;
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map->capacity = 2 * map->capacity;
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return map;
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}
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#ifdef __wasilibc_unmodified_upstream
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size_t
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po_map_foreach(const struct po_map *map, po_map_iter_cb cb)
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{
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struct po_map_entry *entry;
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size_t n;
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po_map_assertvalid(map);
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for (n = 0; n < map->length; n++) {
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entry = map->entries + n;
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if (!cb(entry->name, entry->fd, entry->rights)) {
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break;
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}
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}
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return (n);
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}
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#endif
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#ifdef __wasilibc_unmodified_upstream
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#else
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static
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#endif
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void
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po_map_release(struct po_map *map)
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{
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if (map == NULL) {
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return;
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}
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po_map_assertvalid(map);
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map->refcount -= 1;
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if (map->refcount == 0) {
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free(map->entries);
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free(map);
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}
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}
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