SCIP Doxygen Documentation
 
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Detailed Description

methods for clocks and timing issues

Author
Tobias Achterberg

Definition in file clock.c.

#include <assert.h>
#include <sys/times.h>
#include <sys/time.h>
#include <unistd.h>
#include <time.h>
#include "scip/def.h"
#include "scip/pub_message.h"
#include "blockmemshell/memory.h"
#include "scip/set.h"
#include "scip/clock.h"
#include "scip/struct_clock.h"

Go to the source code of this file.

Functions

static SCIP_Real cputime2sec (clock_t cputime)
 
static SCIP_Real walltime2sec (long sec, long usec)
 
static void sec2cputime (SCIP_Real sec, clock_t *cputime)
 
static void sec2walltime (SCIP_Real sec, long *wallsec, long *wallusec)
 
static void clockSetType (SCIP_CLOCK *clck, SCIP_CLOCKTYPE newtype)
 
static void clockUpdateDefaultType (SCIP_CLOCK *clck, SCIP_CLOCKTYPE defaultclocktype)
 
SCIP_RETCODE SCIPclockCreate (SCIP_CLOCK **clck, SCIP_CLOCKTYPE clocktype)
 
void SCIPclockFree (SCIP_CLOCK **clck)
 
void SCIPclockInit (SCIP_CLOCK *clck, SCIP_CLOCKTYPE clocktype)
 
void SCIPclockReset (SCIP_CLOCK *clck)
 
void SCIPclockEnable (SCIP_CLOCK *clck)
 
void SCIPclockDisable (SCIP_CLOCK *clck)
 
void SCIPclockEnableOrDisable (SCIP_CLOCK *clck, SCIP_Bool enable)
 
void SCIPclockSetType (SCIP_CLOCK *clck, SCIP_CLOCKTYPE clocktype)
 
void SCIPclockStart (SCIP_CLOCK *clck, SCIP_SET *set)
 
void SCIPclockStop (SCIP_CLOCK *clck, SCIP_SET *set)
 
SCIP_Bool SCIPclockIsRunning (SCIP_CLOCK *clck)
 
SCIP_Real SCIPclockGetTime (SCIP_CLOCK *clck)
 
SCIP_Real SCIPclockGetLastTime (SCIP_CLOCK *clck)
 
void SCIPclockSetTime (SCIP_CLOCK *clck, SCIP_Real sec)
 
SCIP_Real SCIPclockGetTimeOfDay (void)
 

Function Documentation

◆ cputime2sec()

static SCIP_Real cputime2sec ( clock_t cputime)
static

converts CPU clock ticks into seconds

Parameters
cputimeclock ticks for CPU time

Definition at line 53 of file clock.c.

References SCIP_Real.

Referenced by SCIPclockGetTime(), and SCIPclockStart().

◆ walltime2sec()

static SCIP_Real walltime2sec ( long sec,
long usec )
static

converts wall clock time into seconds

Parameters
secseconds counter
usecmicroseconds counter

Definition at line 77 of file clock.c.

References SCIP_Real.

Referenced by SCIPclockGetTime(), and SCIPclockStart().

◆ sec2cputime()

static void sec2cputime ( SCIP_Real sec,
clock_t * cputime )
static

converts seconds into CPU clock ticks

Parameters
secseconds
cputimepointer to store clock ticks for CPU time

Definition at line 87 of file clock.c.

References assert(), NULL, and SCIP_Real.

Referenced by SCIPclockSetTime().

◆ sec2walltime()

static void sec2walltime ( SCIP_Real sec,
long * wallsec,
long * wallusec )
static

converts wall clock time into seconds

Parameters
secseconds
wallsecpointer to store seconds counter
wallusecpointer to store microseconds counter

Definition at line 110 of file clock.c.

References assert(), NULL, and SCIP_Real.

Referenced by SCIPclockSetTime().

◆ clockSetType()

static void clockSetType ( SCIP_CLOCK * clck,
SCIP_CLOCKTYPE newtype )
static

sets the clock's type and converts the clock timer accordingly

Parameters
clckclock timer
newtypenew clock type

Definition at line 126 of file clock.c.

References assert(), SCIP_Clock::clocktype, SCIP_Clock::nruns, NULL, SCIP_CLOCKTYPE_DEFAULT, SCIP_Real, SCIPclockGetTime(), SCIPclockReset(), SCIPclockSetTime(), and SCIPdebugMessage.

Referenced by clockUpdateDefaultType(), and SCIPclockSetTime().

◆ clockUpdateDefaultType()

static void clockUpdateDefaultType ( SCIP_CLOCK * clck,
SCIP_CLOCKTYPE defaultclocktype )
static

if the clock uses the default clock type and the default changed, converts the clock timer to the new type

Parameters
clckclock timer
defaultclocktypedefault type of clock to use

Definition at line 157 of file clock.c.

References assert(), clockSetType(), SCIP_Clock::clocktype, NULL, SCIP_CLOCKTYPE_DEFAULT, and SCIP_Clock::usedefault.

Referenced by SCIPclockStart().

◆ SCIPclockCreate()

◆ SCIPclockFree()

◆ SCIPclockInit()

void SCIPclockInit ( SCIP_CLOCK * clck,
SCIP_CLOCKTYPE clocktype )

initializes and resets a clock

Parameters
clckclock timer
clocktypetype of clock

Definition at line 195 of file clock.c.

References assert(), SCIP_Clock::enabled, SCIP_Clock::lasttime, NULL, SCIPclockSetType(), SCIPdebugMessage, and TRUE.

Referenced by SCIPclockCreate().

◆ SCIPclockReset()

◆ SCIPclockEnable()

void SCIPclockEnable ( SCIP_CLOCK * clck)

enables the clock

Parameters
clckclock timer

Definition at line 235 of file clock.c.

References assert(), SCIP_Clock::clocktype, SCIP_Clock::enabled, NULL, SCIPdebugMessage, TRUE, and SCIP_Clock::usedefault.

Referenced by SCIPclockEnableOrDisable().

◆ SCIPclockDisable()

void SCIPclockDisable ( SCIP_CLOCK * clck)

disables and resets the clock

Parameters
clckclock timer

Definition at line 247 of file clock.c.

References assert(), SCIP_Clock::clocktype, SCIP_Clock::enabled, FALSE, NULL, SCIPclockReset(), SCIPdebugMessage, and SCIP_Clock::usedefault.

Referenced by SCIPclockEnableOrDisable().

◆ SCIPclockEnableOrDisable()

◆ SCIPclockSetType()

void SCIPclockSetType ( SCIP_CLOCK * clck,
SCIP_CLOCKTYPE clocktype )

sets the type of the clock, overriding the default clock type, and resets the clock

Parameters
clckclock timer
clocktypetype of clock

Definition at line 274 of file clock.c.

References assert(), SCIP_Clock::clocktype, NULL, SCIP_CLOCKTYPE_DEFAULT, SCIPclockReset(), SCIPdebugMessage, and SCIP_Clock::usedefault.

Referenced by SCIPclockInit().

◆ SCIPclockStart()

void SCIPclockStart ( SCIP_CLOCK * clck,
SCIP_SET * set )

starts measurement of time in the given clock

Parameters
clckclock timer
setglobal SCIP settings

Definition at line 290 of file clock.c.

References assert(), SCIP_Clock::clocktype, clockUpdateDefaultType(), cputime2sec(), SCIP_Clock::enabled, SCIP_Clock::nruns, NULL, SCIP_CLOCKTYPE_CPU, SCIP_CLOCKTYPE_DEFAULT, SCIP_CLOCKTYPE_WALL, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, and walltime2sec().

Referenced by addCurrentSolution(), addNode(), conflictAddConflictCons(), conflictAnalyzeBoundexceedingLP(), conflictAnalyzeInfeasibleLP(), conflictAnalyzeLP(), doCopy(), doScipCreate(), lpBarrier(), lpDualSimplex(), lpLexDualSimplex(), lpPrimalSimplex(), nlpSolve(), nodeRepropagate(), performStrongbranchWithPropagation(), presolve(), SCIPbenderscutExec(), SCIPbenderscutExit(), SCIPbenderscutExitsol(), SCIPbenderscutInit(), SCIPbenderscutInitsol(), SCIPbendersExec(), SCIPbendersExit(), SCIPbendersExitpre(), SCIPbendersExitsol(), SCIPbendersInit(), SCIPbendersInitpre(), SCIPbendersInitsol(), SCIPbranchruleExecExternSol(), SCIPbranchruleExecLPSol(), SCIPbranchruleExecPseudoSol(), SCIPbranchruleExit(), SCIPbranchruleExitsol(), SCIPbranchruleInit(), SCIPbranchruleInitsol(), SCIPcolGetStrongbranch(), SCIPcolGetStrongbranches(), SCIPcomprExec(), SCIPcomprExit(), SCIPcomprInit(), SCIPconflictAnalyze(), SCIPconflictAnalyzePseudo(), SCIPconflictAnalyzeStrongbranch(), SCIPconflicthdlrExec(), SCIPconflicthdlrExit(), SCIPconflicthdlrExitsol(), SCIPconflicthdlrInit(), SCIPconflicthdlrInitsol(), SCIPconshdlrCheck(), SCIPconshdlrEnforceLPSol(), SCIPconshdlrEnforcePseudoSol(), SCIPconshdlrEnforceRelaxSol(), SCIPconshdlrExit(), SCIPconshdlrExitpre(), SCIPconshdlrExitsol(), SCIPconshdlrInit(), SCIPconshdlrInitLP(), SCIPconshdlrInitpre(), SCIPconshdlrInitsol(), SCIPconshdlrPresolve(), SCIPconshdlrPropagate(), SCIPconshdlrSeparateLP(), SCIPconshdlrSeparateSol(), SCIPconsResolvePropagation(), SCIPcutpoolSeparate(), SCIPcutselExit(), SCIPcutselExitsol(), SCIPcutselInit(), SCIPcutselInitsol(), SCIPcutselsSelect(), SCIPeventhdlrExec(), SCIPeventhdlrExit(), SCIPeventhdlrExitsol(), SCIPeventhdlrInit(), SCIPeventhdlrInitsol(), SCIPexprhdlrEstimateExpr(), SCIPexprhdlrInitEstimatesExpr(), SCIPexprhdlrIntEvalExpr(), SCIPexprhdlrReversePropExpr(), SCIPexprhdlrSimplifyExpr(), SCIPheurExec(), SCIPheurExit(), SCIPheurExitsol(), SCIPheurInit(), SCIPheurInitsol(), SCIPnlpiAddConstraints(), SCIPnlpiAddVars(), SCIPnlpiChgConsSides(), SCIPnlpiChgExpr(), SCIPnlpiChgLinearCoefs(), SCIPnlpiChgObjConstant(), SCIPnlpiChgVarBounds(), SCIPnlpiCreateProblem(), SCIPnlpiDelConsSet(), SCIPnlpiDelVarSet(), SCIPnlpiFreeProblem(), SCIPnlpiSetObjective(), SCIPnodeselExit(), SCIPnodeselExitsol(), SCIPnodeselInit(), SCIPnodeselInitsol(), SCIPnodeselSelect(), SCIPpresolExec(), SCIPpresolExit(), SCIPpresolExitpre(), SCIPpresolInit(), SCIPpresolInitpre(), SCIPpresolve(), SCIPpricerExit(), SCIPpricerExitsol(), SCIPpricerFarkas(), SCIPpricerInit(), SCIPpricerInitsol(), SCIPpricerRedcost(), SCIPpricestoreAddProbVars(), SCIPpropExec(), SCIPpropExit(), SCIPpropExitpre(), SCIPpropExitsol(), SCIPpropInit(), SCIPpropInitpre(), SCIPpropInitsol(), SCIPpropPresol(), SCIPpropResolvePropagation(), SCIPreaderRead(), SCIPrelaxExec(), SCIPrelaxExit(), SCIPrelaxExitsol(), SCIPrelaxInit(), SCIPrelaxInitsol(), SCIPrunBoundHeuristic(), SCIPsepaExecLP(), SCIPsepaExecSol(), SCIPsepaExit(), SCIPsepaExitsol(), SCIPsepaInit(), SCIPsepaInitsol(), SCIPsolve(), SCIPsolveCIP(), SCIPsolveConcurrent(), SCIPstartClock(), SCIPstartSolvingTime(), and SCIPtryStrongbranchLPSol().

◆ SCIPclockStop()

void SCIPclockStop ( SCIP_CLOCK * clck,
SCIP_SET * set )

stops measurement of time in the given clock

Parameters
clckclock timer
setglobal SCIP settings

Definition at line 360 of file clock.c.

References assert(), SCIP_Clock::clocktype, SCIP_Clock::enabled, SCIP_Clock::nruns, NULL, SCIP_CLOCKTYPE_CPU, SCIP_CLOCKTYPE_DEFAULT, SCIP_CLOCKTYPE_WALL, SCIPABORT, SCIPdebugMessage, and SCIPerrorMessage.

Referenced by addCurrentSolution(), addNode(), conflictAddConflictCons(), conflictAnalyzeBoundexceedingLP(), conflictAnalyzeInfeasibleLP(), conflictAnalyzeLP(), doCopy(), lpBarrier(), lpDualSimplex(), lpLexDualSimplex(), lpPrimalSimplex(), nlpSolve(), nodeRepropagate(), performStrongbranchWithPropagation(), presolve(), SCIPbenderscutExec(), SCIPbenderscutExit(), SCIPbenderscutExitsol(), SCIPbenderscutInit(), SCIPbenderscutInitsol(), SCIPbendersExec(), SCIPbendersExit(), SCIPbendersExitpre(), SCIPbendersExitsol(), SCIPbendersInit(), SCIPbendersInitpre(), SCIPbendersInitsol(), SCIPbranchruleExecExternSol(), SCIPbranchruleExecLPSol(), SCIPbranchruleExecPseudoSol(), SCIPbranchruleExit(), SCIPbranchruleExitsol(), SCIPbranchruleInit(), SCIPbranchruleInitsol(), SCIPcolGetStrongbranch(), SCIPcolGetStrongbranches(), SCIPcomprExec(), SCIPcomprExit(), SCIPcomprInit(), SCIPconflictAnalyze(), SCIPconflictAnalyzePseudo(), SCIPconflictAnalyzeStrongbranch(), SCIPconflicthdlrExec(), SCIPconflicthdlrExit(), SCIPconflicthdlrExitsol(), SCIPconflicthdlrInit(), SCIPconflicthdlrInitsol(), SCIPconshdlrCheck(), SCIPconshdlrEnforceLPSol(), SCIPconshdlrEnforcePseudoSol(), SCIPconshdlrEnforceRelaxSol(), SCIPconshdlrExit(), SCIPconshdlrExitpre(), SCIPconshdlrExitsol(), SCIPconshdlrInit(), SCIPconshdlrInitLP(), SCIPconshdlrInitpre(), SCIPconshdlrInitsol(), SCIPconshdlrPresolve(), SCIPconshdlrPropagate(), SCIPconshdlrSeparateLP(), SCIPconshdlrSeparateSol(), SCIPconsResolvePropagation(), SCIPcutpoolSeparate(), SCIPcutselExit(), SCIPcutselExitsol(), SCIPcutselInit(), SCIPcutselInitsol(), SCIPcutselsSelect(), SCIPeventhdlrExec(), SCIPeventhdlrExit(), SCIPeventhdlrExitsol(), SCIPeventhdlrInit(), SCIPeventhdlrInitsol(), SCIPexprhdlrEstimateExpr(), SCIPexprhdlrInitEstimatesExpr(), SCIPexprhdlrIntEvalExpr(), SCIPexprhdlrReversePropExpr(), SCIPexprhdlrSimplifyExpr(), SCIPheurExec(), SCIPheurExit(), SCIPheurExitsol(), SCIPheurInit(), SCIPheurInitsol(), SCIPnlpiAddConstraints(), SCIPnlpiAddVars(), SCIPnlpiChgConsSides(), SCIPnlpiChgExpr(), SCIPnlpiChgLinearCoefs(), SCIPnlpiChgObjConstant(), SCIPnlpiChgVarBounds(), SCIPnlpiCreateProblem(), SCIPnlpiDelConsSet(), SCIPnlpiDelVarSet(), SCIPnlpiFreeProblem(), SCIPnlpiSetObjective(), SCIPnodeselExit(), SCIPnodeselExitsol(), SCIPnodeselInit(), SCIPnodeselInitsol(), SCIPnodeselSelect(), SCIPpresolExec(), SCIPpresolExit(), SCIPpresolExitpre(), SCIPpresolInit(), SCIPpresolInitpre(), SCIPpresolve(), SCIPpricerExit(), SCIPpricerExitsol(), SCIPpricerFarkas(), SCIPpricerInit(), SCIPpricerInitsol(), SCIPpricerRedcost(), SCIPpricestoreAddProbVars(), SCIPpropExec(), SCIPpropExit(), SCIPpropExitpre(), SCIPpropExitsol(), SCIPpropInit(), SCIPpropInitpre(), SCIPpropInitsol(), SCIPpropPresol(), SCIPpropResolvePropagation(), SCIPreaderRead(), SCIPrelaxExec(), SCIPrelaxExit(), SCIPrelaxExitsol(), SCIPrelaxInit(), SCIPrelaxInitsol(), SCIPrunBoundHeuristic(), SCIPsepaExecLP(), SCIPsepaExecSol(), SCIPsepaExit(), SCIPsepaExitsol(), SCIPsepaInit(), SCIPsepaInitsol(), SCIPsolve(), SCIPsolveCIP(), SCIPsolveConcurrent(), SCIPstopClock(), SCIPstopSolvingTime(), and SCIPtryStrongbranchLPSol().

◆ SCIPclockIsRunning()

SCIP_Bool SCIPclockIsRunning ( SCIP_CLOCK * clck)

returns whether the clock is currently running

Parameters
clckclock timer

Definition at line 427 of file clock.c.

References assert(), SCIP_Clock::nruns, NULL, and SCIP_Bool.

Referenced by nodeRepropagate(), and SCIPreaderRead().

◆ SCIPclockGetTime()

SCIP_Real SCIPclockGetTime ( SCIP_CLOCK * clck)

gets the used time of this clock in seconds

Parameters
clckclock timer

Definition at line 438 of file clock.c.

References assert(), SCIP_Clock::clocktype, SCIP_Clock::cpuclock, cputime2sec(), SCIP_Clock::data, SCIP_Clock::enabled, EPSN, SCIP_Clock::lasttime, SCIP_Clock::nruns, NULL, result, SCIP_CLOCKTYPE_CPU, SCIP_CLOCKTYPE_DEFAULT, SCIP_CLOCKTYPE_WALL, SCIP_Real, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIP_WallClock::sec, SCIP_WallClock::usec, SCIP_Clock::usedefault, SCIP_CPUClock::user, SCIP_Clock::wallclock, and walltime2sec().

Referenced by applyVbounds(), clockSetType(), displayRelevantStats(), doCopy(), lpAlgorithm(), lpBarrier(), lpDualSimplex(), lpLexDualSimplex(), lpPrimalSimplex(), printTime(), SCIPbenderscutGetSetupTime(), SCIPbenderscutGetTime(), SCIPbendersGetSetupTime(), SCIPbendersGetTime(), SCIPbranchruleGetSetupTime(), SCIPbranchruleGetTime(), SCIPcomprGetSetupTime(), SCIPcomprGetTime(), SCIPconcsolverGetSyncTime(), SCIPconflictGetBoundexceedingLPTime(), SCIPconflictGetGlobalApplTime(), SCIPconflictGetInfeasibleLPTime(), SCIPconflictGetPropTime(), SCIPconflictGetPseudoTime(), SCIPconflictGetStrongbranchTime(), SCIPconflicthdlrGetSetupTime(), SCIPconflicthdlrGetTime(), SCIPconshdlrGetCheckTime(), SCIPconshdlrGetEnfoLPTime(), SCIPconshdlrGetEnfoPSTime(), SCIPconshdlrGetEnfoRelaxTime(), SCIPconshdlrGetPresolTime(), SCIPconshdlrGetPropTime(), SCIPconshdlrGetRespropTime(), SCIPconshdlrGetSepaTime(), SCIPconshdlrGetSetupTime(), SCIPconshdlrGetStrongBranchPropTime(), SCIPcutpoolGetTime(), SCIPcutselGetSetupTime(), SCIPcutselGetTime(), SCIPeventhdlrGetSetupTime(), SCIPeventhdlrGetTime(), SCIPexprhdlrGetEstimateTime(), SCIPexprhdlrGetIntevalTime(), SCIPexprhdlrGetReversepropTime(), SCIPexprhdlrGetSimplifyTime(), SCIPgetClockTime(), SCIPgetPresolvingTime(), SCIPgetSolvingTime(), SCIPgetTotalTime(), SCIPheurGetSetupTime(), SCIPheurGetTime(), SCIPnlpiGetProblemTime(), SCIPnlpiMergeStatistics(), SCIPnlpiSolve(), SCIPnodeselGetSetupTime(), SCIPnodeselGetTime(), SCIPpresolGetSetupTime(), SCIPpresolGetTime(), SCIPpresolve(), SCIPpricerGetSetupTime(), SCIPpricerGetTime(), SCIPpricestoreGetProbPricingTime(), SCIPprintHeuristicStatistics(), SCIPprintLPStatistics(), SCIPprintNLPStatistics(), SCIPprintReoptStatistics(), SCIPprintTimingStatistics(), SCIPprintTreeStatistics(), SCIPpropGetPresolTime(), SCIPpropGetRespropTime(), SCIPpropGetSetupTime(), SCIPpropGetStrongBranchPropTime(), SCIPpropGetTime(), SCIPreaderGetReadingTime(), SCIPreaderRead(), SCIPrelaxExec(), SCIPrelaxGetSetupTime(), SCIPrelaxGetTime(), SCIPreoptGetSavingtime(), SCIPsepaGetSetupTime(), SCIPsepaGetTime(), SCIPsolveIsStopped(), SCIPstatUpdatePrimalDualIntegrals(), solStamp(), and solveNodeInitialLP().

◆ SCIPclockGetLastTime()

SCIP_Real SCIPclockGetLastTime ( SCIP_CLOCK * clck)

gets the last validated time of this clock in seconds

Parameters
clckclock timer

Definition at line 529 of file clock.c.

References assert(), SCIP_Clock::lasttime, NULL, and SCIP_Real.

Referenced by SCIPsolveIsStopped(), and solStamp().

◆ SCIPclockSetTime()

◆ SCIPclockGetTimeOfDay()

SCIP_Real SCIPclockGetTimeOfDay ( void )

gets current time of day in seconds (standard time zone)

Definition at line 621 of file clock.c.

References NULL, and SCIP_Real.

Referenced by SCIPgetTimeOfDay().