zircon/kernel/include/trace.h

// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008-2013 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#ifndef ZIRCON_KERNEL_INCLUDE_TRACE_H_
#define ZIRCON_KERNEL_INCLUDE_TRACE_H_

#include <stdio.h>

//#define __FUNC__ __PRETTY_FUNCTION__
#define __FUNC__ __func__

/* trace routines */
#define TRACE_ENTRY printf("%s: entry\n", __FUNC__)
#define TRACE_EXIT printf("%s: exit\n", __FUNC__)
#define TRACE_ENTRY_OBJ printf("%s: entry obj %p\n", __FUNC__, this)
#define TRACE_EXIT_OBJ printf("%s: exit obj %p\n", __FUNC__, this)
#define TRACE printf("%s:%d\n", __FUNC__, __LINE__)
#define TRACEF(str, x...)                           \
  do {                                              \
    printf("%s:%d: " str, __FUNC__, __LINE__, ##x); \
  } while (0)

/* trace routines that work if LOCAL_TRACE is set */
#define LTRACE_ENTRY   \
  do {                 \
    if (LOCAL_TRACE) { \
      TRACE_ENTRY;     \
    }                  \
  } while (0)
#define LTRACE_EXIT    \
  do {                 \
    if (LOCAL_TRACE) { \
      TRACE_EXIT;      \
    }                  \
  } while (0)
#define LTRACE_ENTRY_OBJ \
  do {                   \
    if (LOCAL_TRACE) {   \
      TRACE_ENTRY_OBJ;   \
    }                    \
  } while (0)
#define LTRACE_EXIT_OBJ \
  do {                  \
    if (LOCAL_TRACE) {  \
      TRACE_EXIT_OBJ;   \
    }                   \
  } while (0)
#define LTRACE         \
  do {                 \
    if (LOCAL_TRACE) { \
      TRACE;           \
    }                  \
  } while (0)
#define LTRACEF(x...)  \
  do {                 \
    if (LOCAL_TRACE) { \
      TRACEF(x);       \
    }                  \
  } while (0)
#define LTRACEF_LEVEL(level, x...) \
  do {                             \
    if (LOCAL_TRACE >= (level)) {  \
      TRACEF(x);                   \
    }                              \
  } while (0)

#endif  // ZIRCON_KERNEL_INCLUDE_TRACE_H_