130 lines
4.6 KiB
C++
130 lines
4.6 KiB
C++
/*
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* Legal Notice
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*
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* This document and associated source code (the "Work") is a part of a
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* benchmark specification maintained by the TPC.
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*
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* The TPC reserves all right, title, and interest to the Work as provided
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* under U.S. and international laws, including without limitation all patent
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* and trademark rights therein.
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*
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* No Warranty
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*
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* 1.1 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE INFORMATION
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* CONTAINED HEREIN IS PROVIDED "AS IS" AND WITH ALL FAULTS, AND THE
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* AUTHORS AND DEVELOPERS OF THE WORK HEREBY DISCLAIM ALL OTHER
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* WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,
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* INCLUDING, BUT NOT LIMITED TO, ANY (IF ANY) IMPLIED WARRANTIES,
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* DUTIES OR CONDITIONS OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
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* PURPOSE, OF ACCURACY OR COMPLETENESS OF RESPONSES, OF RESULTS, OF
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* WORKMANLIKE EFFORT, OF LACK OF VIRUSES, AND OF LACK OF NEGLIGENCE.
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* ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT,
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* QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT
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* WITH REGARD TO THE WORK.
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* 1.2 IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THE WORK BE LIABLE TO
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* ANY OTHER PARTY FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO THE
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* COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS
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* OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
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* INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY,
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* OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT
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* RELATING TO THE WORK, WHETHER OR NOT SUCH AUTHOR OR DEVELOPER HAD
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* ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
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*
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* Contributors
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* - Doug Johnson
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*/
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/******************************************************************************
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* Description: Implementation of the CWheelTime class.
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* See WheelTime.h for a high level description.
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******************************************************************************/
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#include "main/WheelTime.h"
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using namespace TPCE;
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CWheelTime::CWheelTime(PWheelConfig pWheelConfig) : m_pWheelConfig(pWheelConfig), m_Cycles(0), m_Index(0) {
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}
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CWheelTime::CWheelTime(PWheelConfig pWheelConfig, INT32 cycles, INT32 index)
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: m_pWheelConfig(pWheelConfig), m_Cycles(cycles), m_Index(index) {
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}
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CWheelTime::CWheelTime(PWheelConfig pWheelConfig, CDateTime &Base, CDateTime &Now, INT32 offset)
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: m_pWheelConfig(pWheelConfig) {
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Set(Base, Now);
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Add(offset);
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}
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CWheelTime::~CWheelTime(void) {
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}
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void CWheelTime::Add(INT32 Interval) {
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// DJ - should throw error if Interval >= m_pWheelConfig->WheelSize?
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m_Cycles += Interval / m_pWheelConfig->WheelSize;
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m_Index += Interval % m_pWheelConfig->WheelSize;
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if (m_Index >= m_pWheelConfig->WheelSize) {
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// Handle wrapping in the wheel - assume we don't allow multi-cycle
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// intervals
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m_Cycles++;
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m_Index -= m_pWheelConfig->WheelSize;
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}
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}
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INT32 CWheelTime::Offset(const CWheelTime &Time) {
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INT32 Interval;
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Interval = (m_Cycles - Time.m_Cycles) * m_pWheelConfig->WheelSize;
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Interval += (m_Index - Time.m_Index);
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return (Interval);
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}
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void CWheelTime::Set(INT32 cycles, INT32 index) {
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m_Cycles = cycles;
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m_Index = index; // DJ - should throw error if Index >= m_pWheelConfig->WheelSize
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}
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// Set is overloaded. This version is used by the timer wheel.
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void CWheelTime::Set(CDateTime &Base, CDateTime &Now) {
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INT32 offset; // offset from BaseTime in milliseconds
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// DJ - If Now < Base, then we should probably throw an exception
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offset = Now.DiffInMilliSeconds(Base) / m_pWheelConfig->WheelResolution; // convert based on wheel resolution
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m_Cycles = offset / m_pWheelConfig->WheelSize;
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m_Index = offset % m_pWheelConfig->WheelSize;
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}
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// Set is overloaded. This version is used by the event wheel.
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void CWheelTime::Set(CDateTime *pBase, CDateTime *pNow) {
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INT32 offset; // offset from BaseTime in milliseconds
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// DJ - If Now < Base, then we should probably throw an exception
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offset = pNow->DiffInMilliSeconds(pBase) / m_pWheelConfig->WheelResolution; // convert based on wheel resolution
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m_Cycles = offset / m_pWheelConfig->WheelSize;
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m_Index = offset % m_pWheelConfig->WheelSize;
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}
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bool CWheelTime::operator<(const CWheelTime &Time) {
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return (m_Cycles == Time.m_Cycles) ? (m_Index < Time.m_Index) : (m_Cycles < Time.m_Cycles);
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}
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CWheelTime &CWheelTime::operator=(const CWheelTime &Time) {
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m_pWheelConfig = Time.m_pWheelConfig;
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m_Cycles = Time.m_Cycles;
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m_Index = Time.m_Index;
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return *this;
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}
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CWheelTime &CWheelTime::operator+=(const INT32 &Interval) {
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Add(Interval);
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return *this;
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}
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CWheelTime CWheelTime::operator++(INT32) {
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Add(1);
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return *this;
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}
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