/*

 * Backtrace debugging

 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>

 *

 * This software may be distributed under the terms of the BSD license.

 * See README for more details.

 */

#ifndef TRACE_H

#define TRACE_H

#define WPA_TRACE_LEN 16

#ifdef WPA_TRACE

#include <execinfo.h>

#include "list.h"

extern const char *current_btrace_ctx;

#define WPA_TRACE_INFO      \

  void *btrace[WPA_TRACE_LEN];  \

  int btrace_num;     \

  const char *btrace_ctx;

struct wpa_trace_ref {

  struct dl_list list;

  const void *addr;

  WPA_TRACE_INFO

};

#define WPA_TRACE_REF(name) struct wpa_trace_ref wpa_trace_ref_##name

#define wpa_trace_dump(title, ptr) \

  wpa_trace_dump_func((title), (ptr)->btrace, (ptr)->btrace_num,  \

          (ptr)->btrace_ctx)

void wpa_trace_dump_func(const char *title, void **btrace, int btrace_num,

       const char *btrace_ctx);

#define wpa_trace_record(ptr)           \

  do {                \

    (ptr)->btrace_num = backtrace((ptr)->btrace, WPA_TRACE_LEN); \

    (ptr)->btrace_ctx = current_btrace_ctx;     \

  } while (0)

void wpa_trace_show(const char *title);

#define wpa_trace_add_ref(ptr, name, addr) \

  wpa_trace_add_ref_func(&(ptr)->wpa_trace_ref_##name, (addr))

void wpa_trace_add_ref_func(struct wpa_trace_ref *ref, const void *addr);

#define wpa_trace_remove_ref(ptr, name, addr) \

  do { \

    if ((addr)) \

      dl_list_del(&(ptr)->wpa_trace_ref_##name.list); \

  } while (0)

void wpa_trace_check_ref(const void *addr);

size_t wpa_trace_calling_func(const char *buf[], size_t len);

void wpa_trace_set_context(const char *ctx);

#else /* WPA_TRACE */

#define WPA_TRACE_INFO

#define WPA_TRACE_REF(n)

#define wpa_trace_dump(title, ptr) do { } while (0)

#define wpa_trace_record(ptr) do { } while (0)

#define wpa_trace_show(title) do { } while (0)

#define wpa_trace_add_ref(ptr, name, addr) do { } while (0)

#define wpa_trace_remove_ref(ptr, name, addr) do { } while (0)

#define wpa_trace_check_ref(addr) do { } while (0)

static inline void wpa_trace_set_context(const char *ctx)

{

}

#endif /* WPA_TRACE */

#ifdef WPA_TRACE_BFD

void wpa_trace_dump_funcname(const char *title, void *pc);

#else /* WPA_TRACE_BFD */

#define wpa_trace_dump_funcname(title, pc) do { } while (0)

#endif /* WPA_TRACE_BFD */

void wpa_trace_deinit(void);

#endif /* TRACE_H */