1 2 #include <petscsys.h> 3 #include <petsctime.h> 4 5 int main(int argc,char **argv) 6 { 7 PetscLogDouble x,y; 8 PetscLogEvent e1; 9 PetscErrorCode ierr; 10 PetscBool flg; 11 12 ierr = PetscInitialize(&argc,&argv,0,0);if (ierr) return ierr; 13 PetscLogEventRegister("*DummyEvent",0,&e1); 14 /* To take care of the paging effects */ 15 ierr = PetscTime(&x);CHKERRQ(ierr); 16 ierr = PetscLogEventBegin(e1,&x,0,0,0);CHKERRQ(ierr); 17 ierr = PetscLogEventEnd(e1,&x,0,0,0);CHKERRQ(ierr); 18 19 ierr = PetscTime(&x);CHKERRQ(ierr); 20 /* 10 Occurences of the dummy event */ 21 ierr = PetscLogEventBegin(e1,&x,0,0,0);CHKERRQ(ierr); 22 ierr = PetscLogEventEnd(e1,&x,0,0,0);CHKERRQ(ierr); 23 ierr = PetscLogEventBegin(e1,&x,&y,0,0);CHKERRQ(ierr); 24 ierr = PetscLogEventEnd(e1,&x,&y,0,0);CHKERRQ(ierr); 25 ierr = PetscLogEventBegin(e1,&y,0,0,0);CHKERRQ(ierr); 26 ierr = PetscLogEventEnd(e1,&y,0,0,0);CHKERRQ(ierr); 27 ierr = PetscLogEventBegin(e1,&x,0,0,0);CHKERRQ(ierr); 28 ierr = PetscLogEventEnd(e1,&x,0,0,0);CHKERRQ(ierr); 29 ierr = PetscLogEventBegin(e1,&x,&y,0,0);CHKERRQ(ierr); 30 ierr = PetscLogEventEnd(e1,&x,&y,0,0);CHKERRQ(ierr); 31 ierr = PetscLogEventBegin(e1,&y,0,0,0);CHKERRQ(ierr); 32 ierr = PetscLogEventEnd(e1,&y,0,0,0);CHKERRQ(ierr); 33 ierr = PetscLogEventBegin(e1,&x,0,0,0);CHKERRQ(ierr); 34 ierr = PetscLogEventEnd(e1,&x,0,0,0);CHKERRQ(ierr); 35 ierr = PetscLogEventBegin(e1,&x,&y,0,0);CHKERRQ(ierr); 36 ierr = PetscLogEventEnd(e1,&x,&y,0,0);CHKERRQ(ierr); 37 ierr = PetscLogEventBegin(e1,&y,0,0,0);CHKERRQ(ierr); 38 ierr = PetscLogEventEnd(e1,&y,0,0,0);CHKERRQ(ierr); 39 ierr = PetscLogEventBegin(e1,&x,&e1,0,0);CHKERRQ(ierr); 40 ierr = PetscLogEventEnd(e1,&x,&e1,0,0);CHKERRQ(ierr); 41 42 ierr = PetscTime(&y);CHKERRQ(ierr); 43 fprintf(stderr,"%-15s : %e sec, with options : ","PetscLogEvent",(y-x)/10.0); 44 45 ierr = PetscOptionsHasName(NULL,"-log",&flg);CHKERRQ(ierr); 46 if (flg) fprintf(stderr,"-log "); 47 ierr = PetscOptionsHasName(NULL,"-log_all",&flg);CHKERRQ(ierr); 48 if (flg) fprintf(stderr,"-log_all "); 49 ierr = PetscOptionsHasName(NULL,"-log_view",&flg);CHKERRQ(ierr); 50 if (flg) fprintf(stderr,"-log_view "); 51 ierr = PetscOptionsHasName(NULL,"-log_mpe",&flg);CHKERRQ(ierr); 52 if (flg) fprintf(stderr,"-log_mpe "); 53 54 fprintf(stderr,"\n"); 55 56 ierr = PetscFinalize(); 57 return ierr; 58 } 59