Actual source code: pbarrier.c
2: #include <petsc/private/petscimpl.h>
4: /* Logging support */
5: PetscLogEvent PETSC_Barrier;
7: /*@C
8: PetscBarrier - Blocks until this routine is executed by all
9: processors owning the object obj.
11: Input Parameters:
12: . obj - PETSc object (Mat, Vec, IS, SNES etc...)
13: The object be caste with a (PetscObject). NULL can be used to indicate the barrier should be across MPI_COMM_WORLD
15: Level: intermediate
17: Notes:
18: This routine calls MPI_Barrier with the communicator of the PETSc Object obj
20: Fortran Usage:
21: You may pass PETSC_NULL_VEC or any other PETSc null object, such as PETSC_NULL_MAT, to indicate the barrier should be
22: across MPI_COMM_WORLD. You can also pass in any PETSc object, Vec, Mat, etc
24: @*/
25: PetscErrorCode PetscBarrier(PetscObject obj)
26: {
27: MPI_Comm comm;
30: PetscLogEventBegin(PETSC_Barrier,obj,0,0,0);
31: if (obj) PetscObjectGetComm(obj,&comm);
32: else comm = PETSC_COMM_WORLD;
33: MPI_Barrier(comm);
34: PetscLogEventEnd(PETSC_Barrier,obj,0,0,0);
35: return 0;
36: }