2 * This file is part of the sigrok project.
4 * Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 static gpointer new_chunk(struct datastore **ds);
28 /* TODO: Return int as error status, and the struct as param. */
29 struct datastore *datastore_new(int unitsize)
35 return NULL; /* FIXME */
37 if (!(ds = g_malloc(sizeof(struct datastore))))
38 // return SIGROK_ERR_MALLOC;
39 return NULL; /* FIXME */
41 ds->ds_unitsize = unitsize;
48 int datastore_destroy(struct datastore *ds)
55 for (chunk = ds->chunklist; chunk; chunk = chunk->next)
57 g_slist_free(ds->chunklist);
63 void datastore_put(struct datastore *ds, void *data, unsigned int length,
64 int in_unitsize, int *probelist)
67 int capacity, size, num_chunks, chunk_bytes_free, chunk_offset;
71 in_unitsize = in_unitsize;
72 probelist = probelist;
74 if (ds->chunklist == NULL)
75 chunk = new_chunk(&ds);
77 chunk = g_slist_last(ds->chunklist)->data;
79 num_chunks = g_slist_length(ds->chunklist);
80 capacity = (num_chunks * DATASTORE_CHUNKSIZE);
81 chunk_bytes_free = capacity - (ds->ds_unitsize * ds->num_units);
82 chunk_offset = capacity - (DATASTORE_CHUNKSIZE * (num_chunks - 1))
85 while (stored < length) {
86 if (chunk_bytes_free == 0) {
87 chunk = new_chunk(&ds);
88 chunk_bytes_free = DATASTORE_CHUNKSIZE;
92 if (length - stored > (unsigned int)chunk_bytes_free)
93 size = chunk_bytes_free;
95 /* Last part, won't fill up this chunk. */
96 size = length - stored;
98 memcpy(chunk + chunk_offset, data + stored, size);
99 chunk_bytes_free -= size;
102 ds->num_units += stored / ds->ds_unitsize;
105 static gpointer new_chunk(struct datastore **ds)
109 if (!(chunk = malloc(DATASTORE_CHUNKSIZE * (*ds)->ds_unitsize)))
112 (*ds)->chunklist = g_slist_append((*ds)->chunklist, chunk);