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140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
// $Id: System_Time.cpp 91286 2010-08-05 09:04:31Z johnnyw $
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#include "ace/System_Time.h"
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#include "ace/MMAP_Memory_Pool.h"
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#include "ace/Malloc_T.h"
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#include "ace/Null_Mutex.h"
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#include "ace/Time_Value.h"
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#include "ace/OS_NS_string.h"
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#include "ace/OS_NS_time.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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ACE_System_Time::ACE_System_Time (const ACE_TCHAR *poolname)
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: shmem_ (0)
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, delta_time_ (0)
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{
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ACE_TRACE ("ACE_System_Time::ACE_System_Time");
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// Only create a new unique filename for the memory pool file
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// if the user didn't supply one...
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if (poolname == 0)
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{
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#if defined (ACE_DEFAULT_BACKING_STORE)
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// Create a temporary file.
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ACE_OS::strcpy (this->poolname_,
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ACE_DEFAULT_BACKING_STORE);
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#else /* ACE_DEFAULT_BACKING_STORE */
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if (ACE::get_temp_dir (this->poolname_,
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MAXPATHLEN - 17) == -1)
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// -17 for ace-malloc-XXXXXX
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{
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ACE_ERROR ((LM_ERROR,
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ACE_TEXT ("Temporary path too long, ")
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ACE_TEXT ("defaulting to current directory\n")));
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this->poolname_[0] = 0;
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}
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// Add the filename to the end
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ACE_OS::strcat (this->poolname_, ACE_TEXT ("ace-malloc-XXXXXX"));
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#endif /* ACE_DEFAULT_BACKING_STORE */
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}
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else
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ACE_OS::strsncpy (this->poolname_,
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poolname,
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(sizeof this->poolname_ / sizeof (ACE_TCHAR)));
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ACE_NEW (this->shmem_,
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ALLOCATOR (this->poolname_));
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}
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ACE_System_Time::~ACE_System_Time (void)
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{
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ACE_TRACE ("ACE_System_Time::~ACE_System_Time");
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delete this->shmem_;
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}
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// Get the local system time.
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int
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ACE_System_Time::get_local_system_time (time_t & time_out)
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{
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ACE_TRACE ("ACE_System_Time::get_local_system_time");
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time_out = ACE_OS::time (0);
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return 0;
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}
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int
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ACE_System_Time::get_local_system_time (ACE_Time_Value &time_out)
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{
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ACE_TRACE ("ACE_System_Time::get_local_system_time");
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time_out.set (ACE_OS::time (0), 0);
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return 0;
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}
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// Get the system time of the central time server.
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int
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ACE_System_Time::get_master_system_time (time_t &time_out)
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{
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ACE_TRACE ("ACE_System_Time::get_master_system_time");
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if (this->delta_time_ == 0)
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{
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// Try to find it
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void * temp = 0;
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if (this->shmem_->find (ACE_DEFAULT_TIME_SERVER_STR, temp) == -1)
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{
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// No time entry in shared memory (meaning no Clerk exists)
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// so return the local time of the host.
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return this->get_local_system_time (time_out);
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}
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else
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// Extract the delta time.
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this->delta_time_ = static_cast<long *> (temp);
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}
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time_t local_time;
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// If delta_time is positive, it means that the system clock is
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// ahead of our local clock so add delta to the local time to get an
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// approximation of the system time. Else if delta time is negative,
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// it means that our local clock is ahead of the system clock, so
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// return the last local time stored (to avoid time conflicts).
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if (*this->delta_time_ >= 0 )
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{
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this->get_local_system_time (local_time);
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time_out = local_time + static_cast<ACE_UINT32> (*this->delta_time_);
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}
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else
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// Return the last local time. Note that this is stored as the
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// second field in shared memory.
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time_out = *(this->delta_time_ + 1);
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return 0;
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}
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int
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ACE_System_Time::get_master_system_time (ACE_Time_Value &time_out)
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{
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ACE_TRACE ("ACE_System_Time::get_master_system_time");
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time_t to;
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if (this->get_master_system_time (to) == -1)
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return -1;
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time_out.sec (to);
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return 0;
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}
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// Synchronize local system time with the central time server using
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// specified mode (currently unimplemented).
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int
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ACE_System_Time::sync_local_system_time (ACE_System_Time::Sync_Mode)
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{
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ACE_TRACE ("ACE_System_Time::sync_local_system_time");
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ACE_NOTSUP_RETURN (-1);
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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