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/*
* Copyright (c) 2015-16 David Lamparter, for NetDEF, Inc.
*
* 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 <zebra.h>
#include <stdlib.h>
#include "memory.h"
#include "log.h"
static struct memgroup *mg_first = NULL;
struct memgroup **mg_insert = &mg_first;
DEFINE_MGROUP(LIB, "libfrr")
DEFINE_MTYPE(LIB, TMP, "Temporary memory")
static inline void
mt_count_alloc (struct memtype *mt, size_t size)
{
mt->n_alloc++;
if (mt->size == 0)
mt->size = size;
else if (mt->size != size)
mt->size = SIZE_VAR;
}
static inline void
mt_count_free (struct memtype *mt)
{
if (mt->n_alloc == 0)
{
zlog_err ("memory allocation count underflow for \"%s\"", mt->name);
zlog_backtrace (LOG_ERR);
}
mt->n_alloc--;
}
static inline void *
mt_checkalloc (struct memtype *mt, void *ptr, size_t size)
{
if (__builtin_expect(ptr == NULL, 0))
{
memory_oom (size, mt->name);
return NULL;
}
mt_count_alloc (mt, size);
return ptr;
}
void *
qmalloc (struct memtype *mt, size_t size)
{
return mt_checkalloc (mt, malloc (size), size);
}
void *
qcalloc (struct memtype *mt, size_t size)
{
return mt_checkalloc (mt, calloc (size, 1), size);
}
void *
qrealloc (struct memtype *mt, void *ptr, size_t size)
{
if (ptr)
mt_count_free (mt);
return mt_checkalloc (mt, ptr ? realloc (ptr, size) : malloc (size), size);
}
void *
qstrdup (struct memtype *mt, const char *str)
{
return mt_checkalloc (mt, strdup (str), strlen (str) + 1);
}
void
qfree (struct memtype *mt, void *ptr)
{
if (ptr)
mt_count_free (mt);
free (ptr);
}
int
qmem_walk (qmem_walk_fn *func, void *arg)
{
struct memgroup *mg;
struct memtype *mt;
int rv;
for (mg = mg_first; mg; mg = mg->next)
{
if ((rv = func (arg, mg, NULL)))
return rv;
for (mt = mg->types; mt; mt = mt->next)
if ((rv = func (arg, mg, mt)))
return rv;
}
return 0;
}
struct exit_dump_args
{
const char *prefix;
int error;
};
static int
qmem_exit_walker (void *arg, struct memgroup *mg, struct memtype *mt)
{
struct exit_dump_args *eda = arg;
if (!mt)
{
fprintf (stderr, "%s: showing active allocations in memory group %s\n",
eda->prefix, mg->name);
}
else if (mt->n_alloc)
{
char size[32];
eda->error++;
snprintf (size, sizeof (size), "%10zu", mt->size);
fprintf (stderr, "%s: memstats: %-30s: %6zu * %s\n",
eda->prefix, mt->name, mt->n_alloc,
mt->size == SIZE_VAR ? "(variably sized)" : size);
}
return 0;
}
void
log_memstats_stderr (const char *prefix)
{
struct exit_dump_args eda = { .prefix = prefix, .error = 0 };
qmem_walk (qmem_exit_walker, &eda);
}
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