Hash :
6d4085c1
Author :
Thomas de Grivel
Date :
2020-04-30T12:01:46
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158
/*
* Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <assert.h>
#include <stdlib.h>
#include <strings.h>
#include <rtbuf/data.h>
s_data_type g_data_alloc_type = {
sizeof(s_data_alloc) * 8,
DATA_TYPE_BITS
};
s_data_alloc g_data_alloc;
s_data_type g_data_type_type = {
sizeof(u_data_type) * 8,
DATA_TYPE_BITS
};
s_data_alloc *g_data_type_alloc = 0;
int libdata_init ()
{
data_alloc_init(&g_data_alloc, &g_data_alloc_type,
DATA_ALLOC_MAX, 0, (f_data_clean*) data_alloc_clean);
return 0;
}
void data_alloc_init (s_data_alloc *da, s_data_type *t,
unsigned int max, f_data_init *init,
f_data_clean *clean)
{
assert(da);
assert(t);
da->t = t;
da->max = max;
da->mem = calloc(max, (t->bits + 7) / 8);
da->n = 0;
da->free = calloc(max, sizeof(unsigned int));
da->free_n = 0;
da->init = init;
da->clean = clean;
}
void data_alloc_clean (s_data_alloc *da)
{
assert(da);
bzero(da->mem, da->max * ((da->t->bits + 7) / 8));
bzero(da->free, da->max * sizeof(unsigned int));
free(da->mem);
free(da->free);
}
void * data_new_at (s_data_alloc *da, unsigned int i)
{
unsigned int octets = (da->t->bits + 7) / 8;
unsigned int offset = i * octets;
void *m = da->mem + offset;
bzero(m, octets);
if (da->init)
da->init(m);
return m;
}
void * data_new (s_data_alloc *da)
{
assert(da);
if (da->free_n) {
unsigned int i = da->free[--da->free_n];
da->free[da->free_n] = 0;
return data_new_at(da, i);
}
if (da->n < da->max) {
unsigned int i = da->n++;
return data_new_at(da, i);
}
return 0;
}
int data_new_i (s_data_alloc *da)
{
assert(da);
if (da->free_n) {
unsigned int i = da->free[--da->free_n];
da->free[da->free_n] = 0;
data_new_at(da, i);
return i;
}
if (da->n < da->max) {
unsigned int i = da->n++;
data_new_at(da, i);
return i;
}
return -1;
}
void data_delete (s_data_alloc *da, void *data)
{
unsigned int octets;
unsigned int i;
assert(da);
assert(da->t);
octets = ((da->t->bits + 7) / 8);
assert(da->mem <= data);
assert(data < da->mem + da->max * octets);
if (da->clean)
da->clean(data);
bzero(data, octets);
i = (data - da->mem) / octets;
da->free[da->free_n++] = i;
}
s_data_alloc * data_alloc_new (s_data_type *t, unsigned int max,
f_data_init *init, f_data_clean *clean)
{
s_data_alloc *da = data_new(&g_data_alloc);
assert(da);
data_alloc_init(da, t, max, init, clean);
return da;
}
void data_alloc_delete (s_data_alloc *da)
{
assert(da);
data_delete(&g_data_alloc, da);
}
u_data_type * data_type_new (unsigned int bits, unsigned int type)
{
u_data_type *t;
if (!g_data_type_alloc)
g_data_type_alloc = data_alloc_new(&g_data_type_type, DATA_TYPE_MAX,
0, 0);
assert(g_data_type_alloc);
t = data_new(g_data_type_alloc);
assert(t);
t->t.bits = bits;
t->t.type = type;
return t;
}
void data_type_delete (s_data_type *t)
{
assert(g_data_type_alloc);
data_delete(g_data_type_alloc, t);
}