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 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