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// $Id$
#if !defined (ACE_TIMEPROBE_H)
#define ACE_TIMEPROBE_H
// This class is compiled only when ACE_COMPILE_TIMEPROBES is defined
#if defined (ACE_COMPILE_TIMEPROBES)
#include "ace/Malloc.h"
template <class ACE_LOCK>
class ACE_Timeprobe
{
// = TITLE
//
// This class is used to instrument code. This is accomplished
// by inserting time probes at different location in the code.
// ACE_Timeprobe then measures the time difference between two
// time probes.
//
// = DESCRIPTION
//
// This class provides a lightweight implementation for
// measuring the time required to execute code between two time
// probes. When a time probe executes, it records the time, the
// id of the calling thread, and an event description. The
// event description can either be an unsigned long or a string
// (char *). If string are used, care must be taken cause only
// pointer copies are done and the string data is *not* copied.
//
// The recorded time probes can then be printed by calling
// print_times(). If you have used unsigned longs as event
// descriptions in any of your time probes, you must provide an
// event description table that maps the unsigned longs to
// readable strings. This map is a simple array of strings, and
// the event number is used as the index into the array when
// looking for the event description. If you have only used
// strings for the event description, this map is not necessary.
//
public:
enum
{
ACE_DEFAULT_TABLE_SIZE = 4 * 1024
// Default size of the slots in Timeprobe
};
ACE_Timeprobe (u_long size = ACE_DEFAULT_TABLE_SIZE,
ACE_Allocator *alloc = 0);
// Create Timeprobes with <size> slots, using <alloc> for the
// allocator.
~ACE_Timeprobe (void);
// Destructor
void timeprobe (u_long event);
// Record a time. <event> is used to describe this time probe.
void timeprobe (const char *id);
// Record a time. <id> is used to describe this time probe.
void print_times (const char *event_description[] = 0) const;
// Print the time probes. Use <event_description> as a map for
// converting unsigned long events to strings.
void reset (void);
// Reset the slots. All old time probes will be lost.
protected:
ACE_Timeprobe (const ACE_Timeprobe &);
// Not implemented.
// = Time probe record
struct timeprobe_t
{
union event
{
u_long event_number_;
const char *event_description_;
};
// Events are record as strings or numbers
enum event_type
{
NUMBER,
STRING
};
// Type of event
event event_;
// Event
event_type event_type_;
// Event type
ACE_Time_Value time_;
// Timestamp
ACE_thread_t thread_;
// Id of thread posting the time probe
};
timeprobe_t *timeprobes_;
// Time probe slots
ACE_Allocator *allocator_;
// Pointer to a memory allocator.
ACE_LOCK lock_;
// Synchronization variable.
u_long max_size_;
// Max size of timestamp table
u_long current_size_;
// Current size of timestamp table
};
template <class Timeprobe>
class ACE_Function_Timeprobe
{
public:
ACE_Function_Timeprobe (Timeprobe &timeprobe,
u_long event);
~ACE_Function_Timeprobe (void);
protected:
Timeprobe &timeprobe_;
u_long event_;
};
#if defined (__ACE_INLINE__)
#include "ace/Timeprobe.i"
#endif /* __ACE_INLINE__ */
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "ace/Timeprobe.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Timeprobe.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#include "ace/Synch.h"
#include "ace/Singleton.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_Timeprobe<ACE_Thread_Mutex> ACE_TIMEPROBE_WITH_LOCKING;
# else /* ACE_MT_TIMEPROBES */
typedef ACE_Timeprobe<ACE_Null_Mutex> ACE_TIMEPROBE_WITH_LOCKING;
# endif /* ACE_MT_TIMEPROBES */
// 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)
typedef ACE_TSS_Singleton<ACE_TIMEPROBE_WITH_LOCKING, ACE_Null_Mutex> ACE_TIMEPROBE_SINGLETON;
# else /* ACE_TSS_TIMEPROBES */
typedef ACE_Singleton<ACE_TIMEPROBE_WITH_LOCKING, ACE_Thread_Mutex> ACE_TIMEPROBE_SINGLETON;
# endif /* ACE_TSS_TIMEPROBES */
#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)
# 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_USING_TABLE(table) ACE_TIMEPROBE_SINGLETON::instance ()->print_times (table)
# define ACE_FUNCTION_TIMEPROBE(X) ACE_Function_Timeprobe<ACE_TIMEPROBE_WITH_LOCKING> function_timeprobe (*ACE_TIMEPROBE_SINGLETON::instance (), X)
#else /* ACE_ENABLE_TIMEPROBES */
# define ACE_TIMEPROBE_RESET
# define ACE_TIMEPROBE(id)
# define ACE_TIMEPROBE_PRINT
# define ACE_TIMEPROBE_PRINT_USING_TABLE(table)
# define ACE_FUNCTION_TIMEPROBE(X)
#endif /* ACE_ENABLE_TIMEPROBES */
#endif /* ACE_TIMEPROBE_H */
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