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// $Id$
#include "ace/System_Time.h"
#include "ace/MMAP_Memory_Pool.h"
#include "ace/Malloc_T.h"
#include "ace/Null_Mutex.h"
#include "ace/Time_Value.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_time.h"
ACE_RCSID(ace, System_Time, "$Id$")
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_System_Time::ACE_System_Time (const ACE_TCHAR *poolname)
: shmem_ (0)
, delta_time_ (0)
{
ACE_TRACE ("ACE_System_Time::ACE_System_Time");
// Only create a new unique filename for the memory pool file
// if the user didn't supply one...
if (poolname == 0)
{
#if defined (ACE_DEFAULT_BACKING_STORE)
// Create a temporary file.
ACE_OS::strcpy (this->poolname_,
ACE_DEFAULT_BACKING_STORE);
#else /* ACE_DEFAULT_BACKING_STORE */
if (ACE::get_temp_dir (this->poolname_,
MAXPATHLEN - 17) == -1)
// -17 for ace-malloc-XXXXXX
{
ACE_ERROR ((LM_ERROR,
ACE_LIB_TEXT ("Temporary path too long, ")
ACE_LIB_TEXT ("defaulting to current directory\n")));
this->poolname_[0] = 0;
}
// Add the filename to the end
ACE_OS::strcat (this->poolname_, ACE_LIB_TEXT ("ace-malloc-XXXXXX"));
#endif /* ACE_DEFAULT_BACKING_STORE */
}
else
ACE_OS::strsncpy (this->poolname_,
poolname,
(sizeof this->poolname_ / sizeof (ACE_TCHAR)));
ACE_NEW (this->shmem_,
ALLOCATOR (this->poolname_));
}
ACE_System_Time::~ACE_System_Time (void)
{
ACE_TRACE ("ACE_System_Time::~ACE_System_Time");
delete this->shmem_;
}
// Get the local system time.
int
ACE_System_Time::get_local_system_time (time_t & time_out)
{
ACE_TRACE ("ACE_System_Time::get_local_system_time");
time_out = ACE_OS::time (0);
return 0;
}
int
ACE_System_Time::get_local_system_time (ACE_Time_Value &time_out)
{
ACE_TRACE ("ACE_System_Time::get_local_system_time");
time_out.set (ACE_OS::time (0), 0);
return 0;
}
// Get the system time of the central time server.
int
ACE_System_Time::get_master_system_time (time_t &time_out)
{
ACE_TRACE ("ACE_System_Time::get_master_system_time");
if (this->delta_time_ == 0)
{
// Try to find it
void * temp;
if (this->shmem_->find (ACE_DEFAULT_TIME_SERVER_STR, temp) == -1)
{
// No time entry in shared memory (meaning no Clerk exists)
// so return the local time of the host.
return this->get_local_system_time (time_out);
}
else
// Extract the delta time.
this->delta_time_ = static_cast<long *> (temp);
}
time_t local_time;
// If delta_time is positive, it means that the system clock is
// ahead of our local clock so add delta to the local time to get an
// approximation of the system time. Else if delta time is negative,
// it means that our local clock is ahead of the system clock, so
// return the last local time stored (to avoid time conflicts).
if (*this->delta_time_ >= 0 )
{
this->get_local_system_time (local_time);
time_out = local_time + static_cast<ACE_UINT32> (*this->delta_time_);
}
else
// Return the last local time. Note that this is stored as the
// second field in shared memory.
time_out = *(this->delta_time_ + 1);
return 0;
}
int
ACE_System_Time::get_master_system_time (ACE_Time_Value &time_out)
{
ACE_TRACE ("ACE_System_Time::get_master_system_time");
time_t to;
if (this->get_master_system_time (to) == -1)
return -1;
time_out.sec (to);
return 0;
}
// Synchronize local system time with the central time server using
// specified mode (currently unimplemented).
int
ACE_System_Time::sync_local_system_time (ACE_System_Time::Sync_Mode)
{
ACE_TRACE ("ACE_System_Time::sync_local_system_time");
ACE_NOTSUP_RETURN (-1);
}
ACE_END_VERSIONED_NAMESPACE_DECL
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