Scippy

SCIP

Solving Constraint Integer Programs

tpi.h File Reference

Detailed Description

the type definitions for the SCIP parallel interface

Author
Robert Lion Gottwald
Stephen J. Maher

Definition in file tpi.h.

#include "scip/def.h"
#include "scip/pub_message.h"
#include "tpi/def_openmp.h"
#include "tpi/type_tpi.h"
#include "tpi/tpi_openmp.h"
#include "tpi/tpi_tnycthrd.h"
#include "tpi/tpi_none.h"

Go to the source code of this file.

Functions

SCIP_RETCODE SCIPtpiInitLock (SCIP_LOCK *lock)
 
void SCIPtpiDestroyLock (SCIP_LOCK *lock)
 
SCIP_RETCODE SCIPtpiAcquireLock (SCIP_LOCK *lock)
 
SCIP_RETCODE SCIPtpiReleaseLock (SCIP_LOCK *lock)
 
SCIP_RETCODE SCIPtpiInitCondition (SCIP_LOCK *lock)
 
void SCIPtpiDestroyCondition (SCIP_LOCK *lock)
 
SCIP_RETCODE SCIPtpiSignalCondition (SCIP_CONDITION *condition)
 
SCIP_RETCODE SCIPtpiBroadcastCondition (SCIP_CONDITION *condition)
 
SCIP_RETCODE SCIPtpiWaitCondition (SCIP_CONDITION *condition, SCIP_LOCK *lock)
 
int SCIPtpiGetNumThreads (void)
 
int SCIPtpiGetThreadNum (void)
 
SCIP_RETCODE SCIPtpiCreateJob (SCIP_JOB **job, int jobid, SCIP_RETCODE(*jobfunc)(void *args), void *jobarg)
 
int SCIPtpiGetNewJobID (void)
 
SCIP_RETCODE SCIPtpiSumbitJob (SCIP_JOB *job, SCIP_SUBMITSTATUS *status)
 
SCIP_RETCODE SCIPtpiCollectJobs (int jobid)
 
SCIP_RETCODE SCIPtpiInit (int nthreads, int queuesize, SCIP_Bool blockwhenfull)
 
SCIP_RETCODE SCIPtpiExit (void)
 

Function Documentation

◆ SCIPtpiInitLock()

SCIP_RETCODE SCIPtpiInitLock ( SCIP_LOCK *  lock)

initializes the given lock

Parameters
lockthe lock

Referenced by createThreadPool(), SCIPsyncstoreCreate(), and SCIPsyncstoreInit().

◆ SCIPtpiDestroyLock()

void SCIPtpiDestroyLock ( SCIP_LOCK *  lock)

destroys the given lock

Parameters
lockthe lock

Referenced by freeThreadPool(), SCIPsyncstoreExit(), and SCIPsyncstoreRelease().

◆ SCIPtpiAcquireLock()

◆ SCIPtpiReleaseLock()

◆ SCIPtpiInitCondition()

SCIP_RETCODE SCIPtpiInitCondition ( SCIP_LOCK *  lock)

initializes the given condition variable

Parameters
lockthe lock

Referenced by createThreadPool(), and SCIPsyncstoreInit().

◆ SCIPtpiDestroyCondition()

void SCIPtpiDestroyCondition ( SCIP_LOCK *  lock)

destroys the given condition variable

Parameters
lockthe lock

Referenced by freeThreadPool(), and SCIPsyncstoreExit().

◆ SCIPtpiSignalCondition()

SCIP_RETCODE SCIPtpiSignalCondition ( SCIP_CONDITION *  condition)

signals one waiting thread

Parameters
conditionthe condition variable to signal

Definition at line 260 of file tpi_openmp.c.

References SCIP_CALL, SCIP_OKAY, SCIPtpiAcquireLock(), and SCIPtpiReleaseLock().

Referenced by jobQueueAddJob().

◆ SCIPtpiBroadcastCondition()

SCIP_RETCODE SCIPtpiBroadcastCondition ( SCIP_CONDITION *  condition)

signals all waiting threads

Parameters
conditionthe condition variable to broadcast

Definition at line 274 of file tpi_openmp.c.

References SCIP_CALL, SCIP_OKAY, SCIPtpiAcquireLock(), and SCIPtpiReleaseLock().

Referenced by freeThreadPool(), and SCIPsyncstoreFinishSync().

◆ SCIPtpiWaitCondition()

SCIP_RETCODE SCIPtpiWaitCondition ( SCIP_CONDITION *  condition,
SCIP_LOCK *  lock 
)

waits on a condition variable. The given lock must be held by the caller and will be held when this function returns.

Parameters
conditionthe condition variable to wait on
lockthe lock that is held by the caller

Definition at line 286 of file tpi_openmp.c.

References SCIP_CALL, SCIP_OKAY, SCIPtpiAcquireLock(), and SCIPtpiReleaseLock().

Referenced by freeThreadPool(), and SCIPsyncstoreEnsureAllSynced().

◆ SCIPtpiGetNumThreads()

int SCIPtpiGetNumThreads ( void  )

returns the number of threads

Returns the number of threads

Definition at line 324 of file tpi_openmp.c.

◆ SCIPtpiGetThreadNum()

int SCIPtpiGetThreadNum ( void  )

returns the thread number

Returns the thread number

Definition at line 331 of file tpi_openmp.c.

Referenced by applyBoundChanges(), execConcsolver(), and executeJob().

◆ SCIPtpiCreateJob()

SCIP_RETCODE SCIPtpiCreateJob ( SCIP_JOB **  job,
int  jobid,
SCIP_RETCODE(*)(void *args)  jobfunc,
void *  jobarg 
)

creates a job for parallel processing

Parameters
jobpointer to the job that will be created
jobidthe id for the current job
jobfuncpointer to the job function
jobargthe job's argument

Definition at line 28 of file tpi_none.c.

References BMSallocMemory, SCIP_Job::jobfunc, SCIP_Job::jobid, NULL, SCIP_ALLOC, SCIP_ERROR, SCIP_OKAY, and SCIP_UNUSED.

Referenced by SCIPconcurrentSolve().

◆ SCIPtpiGetNewJobID()

int SCIPtpiGetNewJobID ( void  )

get a new job id for a new set of jobs

get a new job id for the new set of submitted jobs

Definition at line 356 of file tpi_openmp.c.

References SCIP_Job::jobid.

Referenced by SCIPconcurrentSolve().

◆ SCIPtpiSumbitJob()

SCIP_RETCODE SCIPtpiSumbitJob ( SCIP_JOB job,
SCIP_SUBMITSTATUS status 
)

submit a job for parallel processing the return is a globally defined status

submit a job for parallel processing

Parameters
jobpointer to the job to be submitted
statuspointer to store the job's submit status

Definition at line 45 of file tpi_none.c.

References SCIP_Job::jobid, NULL, SCIP_ERROR, and SCIP_UNUSED.

Referenced by SCIPconcurrentSolve().

◆ SCIPtpiCollectJobs()

SCIP_RETCODE SCIPtpiCollectJobs ( int  jobid)

blocks until all jobs of the given jobid have finished and then returns the smallest SCIP_RETCODE of all the jobs

Blocks until all jobs with the given jobid have finished and then returns the smallest SCIP_RETCODE of all the jobs

Blocks until all jobs of the given jobid have finished and then returns the smallest SCIP_RETCODE of all the jobs

if the job has the right jobid collect its retcode, remove it from the finished job list, and free it

Parameters
jobidthe jobid of the jobs to wait for

Definition at line 58 of file tpi_none.c.

References SCIP_Job::retcode, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIP_UNUSED, and SCIPtpiAcquireLock().

Referenced by SCIPconcurrentSolve().

◆ SCIPtpiInit()

SCIP_RETCODE SCIPtpiInit ( int  nthreads,
int  queuesize,
SCIP_Bool  blockwhenfull 
)

initializes tpi

Parameters
nthreadsthe number of threads to be used
queuesizethe size of the queue
blockwhenfullshould the queue block when full

Definition at line 68 of file tpi_none.c.

References SCIP_ERROR, and SCIP_UNUSED.

Referenced by SCIPsyncstoreInit().

◆ SCIPtpiExit()

SCIP_RETCODE SCIPtpiExit ( void  )

deinitializes the tpi

deinitializes tpi

Definition at line 82 of file tpi_none.c.

References SCIP_ERROR.

Referenced by SCIPsyncstoreExit().