1/*
2 * Backtrace debugging
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#ifndef TRACE_H
16#define TRACE_H
17
18#define WPA_TRACE_LEN 16
19
20#ifdef WPA_TRACE
21#include <execinfo.h>
22
23#include "list.h"
24
25#define WPA_TRACE_INFO void *btrace[WPA_TRACE_LEN]; int btrace_num;
26
27struct wpa_trace_ref {
28	struct dl_list list;
29	const void *addr;
30	WPA_TRACE_INFO
31};
32#define WPA_TRACE_REF(name) struct wpa_trace_ref wpa_trace_ref_##name
33
34#define wpa_trace_dump(title, ptr) \
35	wpa_trace_dump_func((title), (ptr)->btrace, (ptr)->btrace_num)
36void wpa_trace_dump_func(const char *title, void **btrace, int btrace_num);
37#define wpa_trace_record(ptr) \
38	(ptr)->btrace_num = backtrace((ptr)->btrace, WPA_TRACE_LEN)
39void wpa_trace_show(const char *title);
40#define wpa_trace_add_ref(ptr, name, addr) \
41	wpa_trace_add_ref_func(&(ptr)->wpa_trace_ref_##name, (addr))
42void wpa_trace_add_ref_func(struct wpa_trace_ref *ref, const void *addr);
43#define wpa_trace_remove_ref(ptr, name, addr)	\
44	do { \
45		if ((addr)) \
46			dl_list_del(&(ptr)->wpa_trace_ref_##name.list); \
47	} while (0)
48void wpa_trace_check_ref(const void *addr);
49
50#else /* WPA_TRACE */
51
52#define WPA_TRACE_INFO
53#define WPA_TRACE_REF(n)
54#define wpa_trace_dump(title, ptr) do { } while (0)
55#define wpa_trace_record(ptr) do { } while (0)
56#define wpa_trace_show(title) do { } while (0)
57#define wpa_trace_add_ref(ptr, name, addr) do { } while (0)
58#define wpa_trace_remove_ref(ptr, name, addr) do { } while (0)
59#define wpa_trace_check_ref(addr) do { } while (0)
60
61#endif /* WPA_TRACE */
62
63
64#ifdef WPA_TRACE_BFD
65
66void wpa_trace_dump_funcname(const char *title, void *pc);
67
68#else /* WPA_TRACE_BFD */
69
70#define wpa_trace_dump_funcname(title, pc) do { } while (0)
71
72#endif /* WPA_TRACE_BFD */
73
74#endif /* TRACE_H */
75