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// $Id: ID_Generator.cpp 91670 2010-09-08 18:02:26Z johnnyw $
#if !defined (ACE_ID_GENERATOR_C)
#define ACE_ID_GENERATOR_C
#include "ace/Object_Manager.h"
#include "ID_Generator.h"
time_t ACE_ID_Generator::last_time_ = 0;
size_t ACE_ID_Generator::last_number_ = 0;
ACE_SYNCH_MUTEX *ACE_ID_Generator::lock_ = 0;
char *
ACE_ID_Generator::get_new_id (char *id)
{
time_t t;
size_t sn;
ACE_ID_Generator::get_serial_id (t, sn);
ACE_NEW_RETURN (id, char [ACE_OFFER_ID_LENGTH], 0);
ACE_OS::sprintf (id, "%014d%06d", t, sn);
return id;
}
void
ACE_ID_Generator::get_serial_id (time_t &t, size_t &s)
{
ACE_MT (ACE_GUARD (ACE_SYNCH_MUTEX, ace_mon, *ACE_ID_Generator::get_lock ()));
ACE_OS::time (&t);
if (t != ACE_ID_Generator::last_time_)
{
ACE_ID_Generator::last_time_ = t;
s = ACE_ID_Generator::last_number_ = 0;
}
else
s = ACE_ID_Generator::last_number_++;
}
ACE_SYNCH_MUTEX *
ACE_ID_Generator::get_lock (void)
{
#if defined (ACE_HAS_THREADS)
if (ACE_ID_Generator::lock_ == 0)
{
ACE_MT (ACE_GUARD_RETURN (ACE_Recursive_Thread_Mutex, ace_mon, *ACE_Static_Object_Lock::instance (), 0));
// Double-checked Locking Optimization.
if (ACE_ID_Generator::lock_ == 0)
ACE_NEW_RETURN (ACE_ID_Generator::lock_, ACE_SYNCH_MUTEX, 0);
}
#endif /* ACE_HAS_THREADS */
return ACE_ID_Generator::lock_;
}
#endif /* ACE_ID_GENERATOR_C */
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