78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
|
|
* All Rights Reserved
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <debug.h>
|
|
#include <delay.h>
|
|
#include <console.h>
|
|
|
|
#include <osmocom/core/msgb.h>
|
|
|
|
#define NO_TALLOC
|
|
|
|
#ifdef NO_TALLOC
|
|
/* This is a poor mans static allocator for msgb objects */
|
|
#define MSGB_DATA_SIZE 256+4
|
|
#define MSGB_NUM 32
|
|
struct supermsg {
|
|
uint8_t allocated;
|
|
struct msgb msg;
|
|
uint8_t buf[MSGB_DATA_SIZE];
|
|
};
|
|
static struct supermsg msgs[MSGB_NUM];
|
|
void *_talloc_zero(void *ctx, unsigned int size, const char *name)
|
|
{
|
|
unsigned long flags;
|
|
unsigned int i;
|
|
|
|
local_firq_save(flags);
|
|
|
|
if (size > sizeof(struct msgb) + MSGB_DATA_SIZE)
|
|
goto panic;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(msgs); i++) {
|
|
if (!msgs[i].allocated) {
|
|
msgs[i].allocated = 1;
|
|
memset(&msgs[i].msg, 0, sizeof(msgs[i].msg));
|
|
memset(&msgs[i].buf, 0, sizeof(msgs[i].buf));
|
|
local_irq_restore(flags);
|
|
return &msgs[i].msg;
|
|
}
|
|
}
|
|
|
|
panic:
|
|
cons_puts("unable to allocate msgb\n");
|
|
while (1);
|
|
|
|
return NULL; /* not reached */
|
|
}
|
|
void talloc_free(void *msg)
|
|
{
|
|
struct supermsg *smsg = container_of(msg, struct supermsg, msg);
|
|
/* no locking required, since this is atomic */
|
|
smsg->allocated = 0;
|
|
}
|
|
#endif
|