Actual source code: dlregisthreadcomm.c

petsc-3.5.2 2014-09-08
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  1: #include <petsc-private/threadcommimpl.h>

  3: static PetscBool PetscThreadCommPackageInitialized = PETSC_FALSE;

  5: extern PetscErrorCode PetscThreadCommDetach(MPI_Comm);
  6: extern PetscBool PetscThreadCommRegisterAllCalled;

 10: /*@C
 11:    PetscThreadCommFinalizePackage - Finalize PetscThreadComm package, called from PetscFinalize()

 13:    Logically collective

 15:    Level: developer

 17: .seealso: PetscThreadCommInitializePackage()
 18: @*/
 19: PetscErrorCode PetscThreadCommFinalizePackage(void)
 20: {

 24:   PetscFunctionListDestroy(&PetscThreadCommList);
 25:   MPI_Keyval_free(&Petsc_ThreadComm_keyval);
 26:   PetscThreadCommPackageInitialized = PETSC_FALSE;
 27:   PetscThreadCommRegisterAllCalled  = PETSC_FALSE;
 28:   return(0);
 29: }

 33: /*
 34:   This frees the thread communicator attached to MPI_Comm

 36:   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.

 38:   Note: this is declared extern "C" because it is passed to MPI_Keyval_create()
 39: */
 40: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_CopyThreadComm(MPI_Comm comm,PetscMPIInt keyval,void *extra_state,void *attr_in,void *attr_out,int *flag)
 41: {
 42:   PetscErrorCode  ierr;
 43:   PetscThreadComm tcomm = (PetscThreadComm)attr_in;

 46:   tcomm->refct++;
 47:   *(void**)attr_out = tcomm;

 49:   *flag = 1;
 50:   PetscInfo1(0,"Copying thread communicator data in an MPI_Comm %ld\n",(long)comm);
 51:   if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
 52:   return(0);
 53: }

 57: /*
 58:   This frees the thread communicator attached to MPI_Comm

 60:   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.

 62:   Note: this is declared extern "C" because it is passed to MPI_Keyval_create()
 63: */
 64: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelThreadComm(MPI_Comm comm,PetscMPIInt keyval,void *attr,void *extra_state)
 65: {

 69:   PetscThreadCommDestroy((PetscThreadComm*)&attr);
 70:   PetscInfo1(0,"Deleting thread communicator data in an MPI_Comm %ld\n",(long)comm);if (ierr) PetscFunctionReturn((PetscMPIInt)ierr);
 71:   return(0);
 72: }

 76: /*@C
 77:    PetscThreadCommInitializePackage - Initializes ThreadComm package

 79:    Logically collective

 81:    Level: developer

 83: .seealso: PetscThreadCommFinalizePackage()
 84: @*/
 85: PetscErrorCode PetscThreadCommInitializePackage(void)
 86: {

 90:   if (PetscThreadCommPackageInitialized) return(0);

 92:   if (Petsc_ThreadComm_keyval == MPI_KEYVAL_INVALID) {
 93:     MPI_Keyval_create(Petsc_CopyThreadComm,Petsc_DelThreadComm,&Petsc_ThreadComm_keyval,(void*)0);
 94:   }

 96:   PetscGetNCores(NULL);

 98:   PetscLogEventRegister("ThreadCommRunKer",  0, &ThreadComm_RunKernel);
 99:   PetscLogEventRegister("ThreadCommBarrie",  0, &ThreadComm_Barrier);

101:   PetscThreadCommPackageInitialized = PETSC_TRUE;

103:   PetscRegisterFinalize(PetscThreadCommFinalizePackage);
104:   return(0);
105: }