1 /*
2 * Backtrace debugging
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #ifndef TRACE_H
10 #define TRACE_H
11
12 #define WPA_TRACE_LEN 16
13
14 #ifdef WPA_TRACE
15 #include <execinfo.h>
16
17 #include "list.h"
18
19 extern const char *current_btrace_ctx;
20
21 #define WPA_TRACE_INFO \
22 void *btrace[WPA_TRACE_LEN]; \
23 int btrace_num; \
24 const char *btrace_ctx;
25
26 struct wpa_trace_ref {
27 struct dl_list list;
28 const void *addr;
29 WPA_TRACE_INFO
30 };
31 #define WPA_TRACE_REF(name) struct wpa_trace_ref wpa_trace_ref_##name
32
33 #define wpa_trace_dump(title, ptr) \
34 wpa_trace_dump_func((title), (ptr)->btrace, (ptr)->btrace_num, \
35 (ptr)->btrace_ctx)
36 void wpa_trace_dump_func(const char *title, void **btrace, int btrace_num,
37 const char *btrace_ctx);
38 #define wpa_trace_record(ptr) \
39 do { \
40 (ptr)->btrace_num = backtrace((ptr)->btrace, WPA_TRACE_LEN); \
41 (ptr)->btrace_ctx = current_btrace_ctx; \
42 } while (0)
43 void wpa_trace_show(const char *title);
44 #define wpa_trace_add_ref(ptr, name, addr) \
45 wpa_trace_add_ref_func(&(ptr)->wpa_trace_ref_##name, (addr))
46 void wpa_trace_add_ref_func(struct wpa_trace_ref *ref, const void *addr);
47 #define wpa_trace_remove_ref(ptr, name, addr) \
48 do { \
49 if ((addr)) \
50 dl_list_del(&(ptr)->wpa_trace_ref_##name.list); \
51 } while (0)
52 void wpa_trace_check_ref(const void *addr);
53 size_t wpa_trace_calling_func(const char *buf[], size_t len);
54 void wpa_trace_set_context(const char *ctx);
55
56 #else /* WPA_TRACE */
57
58 #define WPA_TRACE_INFO
59 #define WPA_TRACE_REF(n)
60 #define wpa_trace_dump(title, ptr) do { } while (0)
61 #define wpa_trace_record(ptr) do { } while (0)
62 #define wpa_trace_show(title) do { } while (0)
63 #define wpa_trace_add_ref(ptr, name, addr) do { } while (0)
64 #define wpa_trace_remove_ref(ptr, name, addr) do { } while (0)
65 #define wpa_trace_check_ref(addr) do { } while (0)
66
wpa_trace_set_context(const char * ctx)67 static inline void wpa_trace_set_context(const char *ctx)
68 {
69 }
70
71 #endif /* WPA_TRACE */
72
73
74 #ifdef WPA_TRACE_BFD
75
76 void wpa_trace_dump_funcname(const char *title, void *pc);
77
78 #else /* WPA_TRACE_BFD */
79
80 #define wpa_trace_dump_funcname(title, pc) do { } while (0)
81
82 #endif /* WPA_TRACE_BFD */
83
84 void wpa_trace_deinit(void);
85
86 #endif /* TRACE_H */
87