/* -*- C++ -*- */

//=============================================================================
/**
 *  @file    Timeprobe.h
 *
 *  $Id$
 *
 *  @author Irfan Pyarali
 *
 * If users want to use time probes the ACE_COMPILE_TIMEPROBES flag
 * must be defined when compiling ACE.  This can be achieved by doing
 * one of the following: . Use make probe = 1 if you are using the
 * make utility. . Define ACE_COMPILE_TIMEPROBES in config.h . Define
 * ACE_COMPILE_TIMEPROBES in the VC project file. . Other regular
 * methods will also work. It is not necessary to define
 * ACE_COMPILE_TIMEPROBES when using time probes you simply need
 * ACE_ENABLE_TIMEPROBES.  You can use the ACE_TIMEPROBE_* macros to
 * program the time probes and use the ACE_ENABLE_TIMEPROBE to enable
 * the time probes.  If you define ACE_ENABLE_TIMEPROBE in your code
 * but forget to compile ACE with ACE_COMPILE_TIMEPROBES you will end
 * up with linker errors. Remember that ACE_COMPILE_TIMEPROBES means
 * that the ACE library will contain code for time probes.  This is
 * only useful when compiling ACE. ACE_ENABLE_TIMEPROBES means that
 * the ACE_TIMEPROBE_* macros should spring to life.
 *
 */
//=============================================================================


#ifndef ACE_TIMEPROBE_H
#define ACE_TIMEPROBE_H
#include "ace/pre.h"

#include "ace/OS.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

#if defined (ACE_ENABLE_TIMEPROBES)
  #if !defined (ACE_COMPILE_TIMEPROBES)
    #define ACE_COMPILE_TIMEPROBES
  #endif /* ACE_COMPILE_TIMEPROBES */
#endif /* ACE_ENABLE_TIMEPROBES */

#if defined (ACE_COMPILE_TIMEPROBES)

/**
 * @class ACE_Event_Descriptions
 *
 * @brief Event Descriptions.
 */
class ACE_Export ACE_Event_Descriptions
{
public:
  /// Event descriptions
  const char **descriptions_;

  /// Minimum id of this description set
  u_long minimum_id_;

  /// Comparison
  int operator== (const ACE_Event_Descriptions &rhs) const;
};

/**
 * @class ACE_timeprobe_t
 *
 * @brief Time probe record.
 */
class ACE_Export ACE_timeprobe_t
{
public:
  /// Events are record as strings or numbers.
  union event
  {
    u_long event_number_;
    const char *event_description_;
  };

  /// Type of event.
  enum event_type
  {
    NUMBER,
    STRING
  };

  /// Event.
  event event_;

  /// Type of event.
  event_type event_type_;

  /// Timestamp.
  ACE_hrtime_t time_;

  /// Id of thread posting the time probe.
  ACE_thread_t thread_;
};

#if defined (__ACE_INLINE__)
#include "ace/Timeprobe.i"
#endif /* __ACE_INLINE__ */

#include "ace/Synch.h"
#include "ace/Singleton.h"
#include "ace/Timeprobe_T.h"

// If ACE_MT_TIMEPROBES is defined, use a Thread_Mutex to lock the
// internal state of ACE_Timerprobe.  This allows multiple threads to
// use the same ACE_Timerprobe.
#  if defined (ACE_MT_TIMEPROBES)
typedef ACE_SYNCH_MUTEX ACE_TIMEPROBE_MUTEX;
#  else /* ACE_MT_TIMEPROBES */
typedef ACE_SYNCH_NULL_MUTEX ACE_TIMEPROBE_MUTEX;
#  endif /* ACE_MT_TIMEPROBES */

typedef ACE_Timeprobe<ACE_TIMEPROBE_MUTEX>
        ACE_TIMEPROBE_WITH_LOCKING;

// If ACE_TSS_TIMEPROBES is defined, store the ACE_Timeprobe singleton
// in thread specific storage.  This allows multiple threads to use
// their own instance of ACE_Timerprobe, without interfering with each
// other.
#  if defined (ACE_TSS_TIMEPROBES)
#    define ACE_TIMEPROBE_SINGLETON_TYPE ACE_TSS_Singleton
#    define ACE_TIMEPROBE_SINGLETON_LOCK_TYPE ACE_SYNCH_NULL_MUTEX
#  else /* ACE_TSS_TIMEPROBES */
#    define ACE_TIMEPROBE_SINGLETON_TYPE ACE_Singleton
#    define ACE_TIMEPROBE_SINGLETON_LOCK_TYPE ACE_SYNCH_MUTEX
#  endif /* ACE_TSS_TIMEPROBES */

#if defined (_MSC_VER)
// Disable warning of using Microsoft Extension.
#pragma warning(disable:4231)
#endif /* _MSC_VER */

typedef ACE_TIMEPROBE_SINGLETON_TYPE<ACE_TIMEPROBE_WITH_LOCKING, ACE_TIMEPROBE_SINGLETON_LOCK_TYPE>
        ACE_TIMEPROBE_SINGLETON;

ACE_SINGLETON_DECLARE (ACE_TIMEPROBE_SINGLETON_TYPE, \
                       ACE_TIMEPROBE_WITH_LOCKING, \
                       ACE_TIMEPROBE_SINGLETON_LOCK_TYPE);

#if defined (_MSC_VER)
// Default back the warning of using Microsoft Extension.
#pragma warning(default:4231)
#endif /* _MSC_VER */

#endif /* ACE_COMPILE_TIMEPROBES */

// If ACE_ENABLE_TIMEPROBES is defined, the macros below will
// work. Otherwise, they just vanish.  Using this macro, you can
// control which files/libraries are probed.
#if defined (ACE_ENABLE_TIMEPROBES) && defined (ACE_COMPILE_TIMEPROBES)

#  define ACE_TIMEPROBE_RESET ACE_TIMEPROBE_SINGLETON::instance ()->reset ()
#  define ACE_TIMEPROBE(id) ACE_TIMEPROBE_SINGLETON::instance ()->timeprobe (id)
#  define ACE_TIMEPROBE_PRINT ACE_TIMEPROBE_SINGLETON::instance ()->print_times ()
#  define ACE_TIMEPROBE_PRINT_ABSOLUTE ACE_TIMEPROBE_SINGLETON::instance ()->print_absolute_times ()
#  define ACE_TIMEPROBE_EVENT_DESCRIPTIONS(descriptions, minimum_id) static int ace_timeprobe_##descriptions##_return = ACE_TIMEPROBE_SINGLETON::instance ()->event_descriptions (descriptions, minimum_id)
#  define ACE_FUNCTION_TIMEPROBE(X) ACE_Function_Timeprobe<ACE_TIMEPROBE_WITH_LOCKING> function_timeprobe (*ACE_TIMEPROBE_SINGLETON::instance (), X)

#else /* ACE_ENABLE_TIMEPROBES && ACE_COMPILE_TIMEPROBES */

#  define ACE_TIMEPROBE_RESET
#  define ACE_TIMEPROBE(id)
#  define ACE_TIMEPROBE_PRINT
#  define ACE_TIMEPROBE_PRINT_ABSOLUTE
#  define ACE_TIMEPROBE_EVENT_DESCRIPTIONS(descriptions, minimum_id)
#  define ACE_FUNCTION_TIMEPROBE(X)

#endif /* ACE_ENABLE_TIMEPROBES && ACE_COMPILE_TIMEPROBES */
#include "ace/post.h"
#endif /* ACE_TIMEPROBE_H */