/*
*Copyright(c)2016, Jeffrey Lee
*Allrightsreserved.
*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met: 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef PROFILING_H
#define PROFILING_H

#include <stdint.h>

//#define PROFILING_ENABLED

#ifdef PROFILING_ENABLED

typedef struct profile_struct
{
  const char *name;
  struct profile_struct *full_list;
  struct profile_struct *active_list;
  uint32_t cumulative_count;
  uint64_t cumulative_time;
  uint64_t cumulative_metric;
} profile_struct_t;

extern void profile_init();
extern void profile_update();

extern void profile_begin(profile_struct_t *prof);
extern void profile_end(profile_struct_t *prof);

#define PROFILE_FUNC_BEGIN \
  static profile_struct_t profile_stats = { __FUNCTION__ }; \
  profile_begin(&profile_stats);

#define PROFILE_FUNC_END \
  profile_end(&profile_stats);

#define PROFILE_FUNC_METRIC(X) \
  profile_stats.cumulative_metric += (X);

#else

static inline void profile_init() {}
static inline void profile_update() {}

#define PROFILE_FUNC_BEGIN
#define PROFILE_FUNC_END
#define PROFILE_FUNC_METRIC(X)

#endif

#endif
