| /* Memory allocation library |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
| */ |
| #include <stdint.h> |
| |
| #include "talloc.h" |
| #include "trace.h" |
| #include "utils.h" |
| #include <osmocom/core/utils.h> |
| |
| #define NUM_RCTX_SMALL 10 |
| #define RCTX_SIZE_SMALL 348 |
| |
| static uint8_t msgb_data[NUM_RCTX_SMALL][RCTX_SIZE_SMALL] __attribute__((aligned(sizeof(long)))); |
| static uint8_t msgb_inuse[NUM_RCTX_SMALL]; |
| |
| void *_talloc_zero(const void *ctx, size_t size, const char *name) |
| { |
| unsigned int i; |
| unsigned long x; |
| |
| local_irq_save(x); |
| if (size > RCTX_SIZE_SMALL) { |
| local_irq_restore(x); |
| TRACE_ERROR("%s() request too large(%d > %d)\r\n", __func__, size, RCTX_SIZE_SMALL); |
| return NULL; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(msgb_inuse); i++) { |
| if (!msgb_inuse[i]) { |
| uint8_t *out = msgb_data[i]; |
| msgb_inuse[i] = 1; |
| memset(out, 0, size); |
| local_irq_restore(x); |
| return out; |
| } |
| } |
| local_irq_restore(x); |
| TRACE_ERROR("%s() out of memory!\r\n", __func__); |
| return NULL; |
| } |
| |
| int _talloc_free(void *ptr, const char *location) |
| { |
| unsigned int i; |
| unsigned long x; |
| |
| local_irq_save(x); |
| for (i = 0; i < ARRAY_SIZE(msgb_inuse); i++) { |
| if (ptr == msgb_data[i]) { |
| if (!msgb_inuse[i]) { |
| TRACE_ERROR("%s: double_free by \r\n", __func__, location); |
| } else { |
| msgb_inuse[i] = 0; |
| } |
| local_irq_restore(x); |
| return 0; |
| } |
| } |
| |
| local_irq_restore(x); |
| TRACE_ERROR("%s: invalid pointer %p from %s\r\n", __func__, ptr, location); |
| return -1; |
| } |
| |
| void talloc_set_name_const(const void *ptr, const char *name) |
| { |
| /* do nothing */ |
| } |
| |
| #if 0 |
| void *talloc_named_const(const void *context, size_t size, const char *name) |
| { |
| if (size) |
| TRACE_ERROR("%s: called with size!=0 from %s\r\n", __func__, name); |
| return NULL; |
| } |
| |
| void *talloc_pool(const void *context, size_t size) |
| { |
| } |
| #endif |
| |