-/* Memory management routine
- Copyright (C) 1998 Kunihiro Ishiguro
-
-This file is part of GNU Zebra.
-
-GNU Zebra 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, or (at your option) any
-later version.
-
-GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the Free
-Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
-
-#ifndef _ZEBRA_MEMORY_H
-#define _ZEBRA_MEMORY_H
-
-/* For pretty printing of memory allocate information. */
-struct memory_list
-{
- int index;
- const char *format;
+/*
+ * 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.
+ */
+
+#ifndef _QUAGGA_MEMORY_H
+#define _QUAGGA_MEMORY_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <frratomic.h>
+#include "compiler.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(HAVE_MALLOC_SIZE) && !defined(HAVE_MALLOC_USABLE_SIZE)
+#define malloc_usable_size(x) malloc_size(x)
+#define HAVE_MALLOC_USABLE_SIZE
+#endif
+
+#define SIZE_VAR ~0UL
+struct memtype {
+ struct memtype *next, **ref;
+ const char *name;
+ atomic_size_t n_alloc;
+ atomic_size_t n_max;
+ atomic_size_t size;
+#ifdef HAVE_MALLOC_USABLE_SIZE
+ atomic_size_t total;
+ atomic_size_t max_size;
+#endif
};
-struct mlist {
- struct memory_list *list;
- const char *name;
+struct memgroup {
+ struct memgroup *next, **ref;
+ struct memtype *types, **insert;
+ const char *name;
};
-
-#include "lib/memtypes.h"
-
-extern struct mlist mlists[];
-
-/* #define MEMORY_LOG */
-#ifdef MEMORY_LOG
-#define XMALLOC(mtype, size) \
- mtype_zmalloc (__FILE__, __LINE__, (mtype), (size))
-#define XCALLOC(mtype, size) \
- mtype_zcalloc (__FILE__, __LINE__, (mtype), (size))
-#define XREALLOC(mtype, ptr, size) \
- mtype_zrealloc (__FILE__, __LINE__, (mtype), (ptr), (size))
-#define XFREE(mtype, ptr) \
- mtype_zfree (__FILE__, __LINE__, (mtype), (ptr))
-#define XSTRDUP(mtype, str) \
- mtype_zstrdup (__FILE__, __LINE__, (mtype), (str))
-#else
-#define XMALLOC(mtype, size) zmalloc ((mtype), (size))
-#define XCALLOC(mtype, size) zcalloc ((mtype), (size))
-#define XREALLOC(mtype, ptr, size) zrealloc ((mtype), (ptr), (size))
-#define XFREE(mtype, ptr) do { \
- zfree ((mtype), (ptr)); \
- ptr = NULL; } \
- while (0)
-#define XSTRDUP(mtype, str) zstrdup ((mtype), (str))
-#endif /* MEMORY_LOG */
-
-/* Prototypes of memory function. */
-extern void *zmalloc (int type, size_t size);
-extern void *zcalloc (int type, size_t size);
-extern void *zrealloc (int type, void *ptr, size_t size);
-extern void zfree (int type, void *ptr);
-extern char *zstrdup (int type, const char *str);
-
-extern void *mtype_zmalloc (const char *file, int line, int type, size_t size);
-
-extern void *mtype_zcalloc (const char *file, int line, int type,
- size_t num, size_t size);
-
-extern void *mtype_zrealloc (const char *file, int line, int type, void *ptr,
- size_t size);
-
-extern void mtype_zfree (const char *file, int line, int type,
- void *ptr);
-
-extern char *mtype_zstrdup (const char *file, int line, int type,
- const char *str);
-extern void memory_init (void);
-extern void log_memstats_stderr (const char *);
-
-/* return number of allocations outstanding for the type */
-extern unsigned long mtype_stats_alloc (int);
-
-/* Human friendly string for given byte count */
-#define MTYPE_MEMSTR_LEN 20
-extern const char *mtype_memstr (char *, size_t, unsigned long);
-#endif /* _ZEBRA_MEMORY_H */
+
+/* macro usage:
+ *
+ * mydaemon.h
+ * DECLARE_MGROUP(MYDAEMON)
+ * DECLARE_MTYPE(MYDAEMON_COMMON)
+ *
+ * mydaemon.c
+ * DEFINE_MGROUP(MYDAEMON, "my daemon memory")
+ * DEFINE_MTYPE(MYDAEMON, MYDAEMON_COMMON,
+ * "this mtype is used in multiple files in mydaemon")
+ * foo = qmalloc(MTYPE_MYDAEMON_COMMON, sizeof(*foo))
+ *
+ * mydaemon_io.c
+ * bar = qmalloc(MTYPE_MYDAEMON_COMMON, sizeof(*bar))
+ *
+ * DEFINE_MTYPE_STATIC(MYDAEMON, MYDAEMON_IO,
+ * "this mtype is used only in this file")
+ * baz = qmalloc(MTYPE_MYDAEMON_IO, sizeof(*baz))
+ *
+ * Note: Naming conventions (MGROUP_ and MTYPE_ prefixes are enforced
+ * by not having these as part of the macro arguments)
+ * Note: MTYPE_* are symbols to the compiler (of type struct memtype *),
+ * but MGROUP_* aren't.
+ */
+
+#define DECLARE_MGROUP(name) extern struct memgroup _mg_##name;
+#define DEFINE_MGROUP(mname, desc) \
+ struct memgroup _mg_##mname \
+ __attribute__((section(".data.mgroups"))) = { \
+ .name = desc, \
+ .types = NULL, \
+ .next = NULL, \
+ .insert = NULL, \
+ .ref = NULL, \
+ }; \
+ static void _mginit_##mname(void) __attribute__((_CONSTRUCTOR(1000))); \
+ static void _mginit_##mname(void) \
+ { \
+ extern struct memgroup **mg_insert; \
+ _mg_##mname.ref = mg_insert; \
+ *mg_insert = &_mg_##mname; \
+ mg_insert = &_mg_##mname.next; \
+ } \
+ static void _mgfini_##mname(void) __attribute__((_DESTRUCTOR(1000))); \
+ static void _mgfini_##mname(void) \
+ { \
+ if (_mg_##mname.next) \
+ _mg_##mname.next->ref = _mg_##mname.ref; \
+ *_mg_##mname.ref = _mg_##mname.next; \
+ }
+
+#define DECLARE_MTYPE(name) \
+ extern struct memtype MTYPE_##name[1]; \
+ /* end */
+
+#define DEFINE_MTYPE_ATTR(group, mname, attr, desc) \
+ attr struct memtype MTYPE_##mname[1] \
+ __attribute__((section(".data.mtypes"))) = { { \
+ .name = desc, \
+ .next = NULL, \
+ .n_alloc = 0, \
+ .size = 0, \
+ .ref = NULL, \
+ } }; \
+ static void _mtinit_##mname(void) __attribute__((_CONSTRUCTOR(1001))); \
+ static void _mtinit_##mname(void) \
+ { \
+ if (_mg_##group.insert == NULL) \
+ _mg_##group.insert = &_mg_##group.types; \
+ MTYPE_##mname->ref = _mg_##group.insert; \
+ *_mg_##group.insert = MTYPE_##mname; \
+ _mg_##group.insert = &MTYPE_##mname->next; \
+ } \
+ static void _mtfini_##mname(void) __attribute__((_DESTRUCTOR(1001))); \
+ static void _mtfini_##mname(void) \
+ { \
+ if (MTYPE_##mname->next) \
+ MTYPE_##mname->next->ref = MTYPE_##mname->ref; \
+ *MTYPE_##mname->ref = MTYPE_##mname->next; \
+ } \
+ /* end */
+
+#define DEFINE_MTYPE(group, name, desc) \
+ DEFINE_MTYPE_ATTR(group, name, , desc) \
+ /* end */
+
+#define DEFINE_MTYPE_STATIC(group, name, desc) \
+ DEFINE_MTYPE_ATTR(group, name, static, desc) \
+ /* end */
+
+DECLARE_MGROUP(LIB)
+DECLARE_MTYPE(TMP)
+
+
+extern void *qmalloc(struct memtype *mt, size_t size)
+ __attribute__((malloc, _ALLOC_SIZE(2), nonnull(1) _RET_NONNULL));
+extern void *qcalloc(struct memtype *mt, size_t size)
+ __attribute__((malloc, _ALLOC_SIZE(2), nonnull(1) _RET_NONNULL));
+extern void *qrealloc(struct memtype *mt, void *ptr, size_t size)
+ __attribute__((_ALLOC_SIZE(3), nonnull(1) _RET_NONNULL));
+extern void *qstrdup(struct memtype *mt, const char *str)
+ __attribute__((malloc, nonnull(1) _RET_NONNULL));
+extern void qfree(struct memtype *mt, void *ptr) __attribute__((nonnull(1)));
+
+#define XMALLOC(mtype, size) qmalloc(mtype, size)
+#define XCALLOC(mtype, size) qcalloc(mtype, size)
+#define XREALLOC(mtype, ptr, size) qrealloc(mtype, ptr, size)
+#define XSTRDUP(mtype, str) qstrdup(mtype, str)
+#define XFREE(mtype, ptr) \
+ do { \
+ qfree(mtype, ptr); \
+ ptr = NULL; \
+ } while (0)
+
+static inline size_t mtype_stats_alloc(struct memtype *mt)
+{
+ return mt->n_alloc;
+}
+
+/* NB: calls are ordered by memgroup; and there is a call with mt == NULL for
+ * each memgroup (so that a header can be printed, and empty memgroups show)
+ *
+ * return value: 0: continue, !0: abort walk. qmem_walk will return the
+ * last value from qmem_walk_fn. */
+typedef int qmem_walk_fn(void *arg, struct memgroup *mg, struct memtype *mt);
+extern int qmem_walk(qmem_walk_fn *func, void *arg);
+extern int log_memstats(FILE *fp, const char *);
+#define log_memstats_stderr(prefix) log_memstats(stderr, prefix)
+
+extern void memory_oom(size_t size, const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _QUAGGA_MEMORY_H */
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