1 2 static char help[] = "Tests PetscCommGetComm().\n"; 3 4 #include <petscsys.h> 5 6 int main(int argc,char **argv) 7 { 8 MPI_Comm comms[10],comm; 9 PetscInt i; 10 PetscRandom rand; 11 12 PetscFunctionBeginUser; 13 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 14 PetscCall(PetscRandomCreate(PETSC_COMM_WORLD,&rand)); 15 PetscCall(PetscObjectGetComm((PetscObject)rand,&comm)); 16 for (i=0; i<10; i++) { 17 PetscCall(PetscCommGetComm(comm,&comms[i])); 18 } 19 for (i=0; i<5; i++) { 20 PetscCall(PetscCommRestoreComm(comm,&comms[i])); 21 } 22 for (i=0; i<5; i++) { 23 PetscCall(PetscCommGetComm(comm,&comms[i])); 24 } 25 for (i=0; i<10; i++) { 26 PetscCall(PetscCommRestoreComm(comm,&comms[i])); 27 } 28 PetscCall(PetscRandomDestroy(&rand)); 29 PetscCall(PetscFinalize()); 30 return 0; 31 } 32 33 /*TEST 34 35 test: 36 requires: defined(PETSC_USE_LOG) 37 args: -info 38 filter: grep Reusing | wc -l 39 40 TEST*/ 41