/* ************************************************************************* * * "DHRYSTONE" Benchmark Program * ----------------------------- * * Version: C, Version 2.1 * * File: dhry_1.c (part 2 of 3) * * Date: May 25, 1988 * * Author: Reinhold P. Weicker * ************************************************************************* */ #include #include #include #include "dhry.h" static double dtime(void) { extern unsigned int timer_get_ms(); return (double)timer_get_ms() / 1000; } /* Global Variables: */ Rec_Pointer Ptr_Glob, Next_Ptr_Glob; int Int_Glob; Boolean Bool_Glob; char Ch_1_Glob, Ch_2_Glob; int Arr_1_Glob [50]; int Arr_2_Glob [50] [50]; char Reg_Define[] = "Register option selected."; //extern void *malloc(); Enumeration Func_1(); /* forward declaration necessary since Enumeration may not simply be int */ #ifndef ROPT #define REG /* REG becomes defined as empty */ /* i.e. no register variables */ #else #define REG register #endif void Proc_1(REG Rec_Pointer); void Proc_2(One_Fifty *); void Proc_3(Rec_Pointer *); void Proc_4(void); void Proc_5(void); #ifdef NOSTRUCTASSIGN void memcpy(register char *, register char *, register int); #endif extern Boolean Func_2(Str_30, Str_30); extern void Proc_6(Enumeration, Enumeration *); extern void Proc_7(One_Fifty, One_Fifty, One_Fifty *); extern void Proc_8(Arr_1_Dim, Arr_2_Dim, int, int); /* variables for time measurement: */ #define Too_Small_Time 2 /* Measurements should last at least 2 seconds */ double Begin_Time, End_Time, User_Time; double Microseconds, Dhrystones_Per_Second, Vax_Mips; /* end of variables for time measurement */ void dhry_main(unsigned int Number_Of_Runs) /*****/ /* main program, corresponds to procedures */ /* Main and Proc_0 in the Ada version */ { One_Fifty Int_1_Loc; REG One_Fifty Int_2_Loc = 0; One_Fifty Int_3_Loc; REG char Ch_Index; Enumeration Enum_Loc; Str_30 Str_1_Loc; Str_30 Str_2_Loc; REG int Run_Index; Next_Ptr_Glob = (Rec_Pointer) malloc(sizeof(Rec_Type)); Ptr_Glob = (Rec_Pointer) malloc(sizeof(Rec_Type)); Ptr_Glob->Ptr_Comp = Next_Ptr_Glob; Ptr_Glob->Discr = Ident_1; Ptr_Glob->variant.var_1.Enum_Comp = Ident_3; Ptr_Glob->variant.var_1.Int_Comp = 40; strcpy(Ptr_Glob->variant.var_1.Str_Comp, "DHRYSTONE PROGRAM, SOME STRING"); strcpy(Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING"); Arr_2_Glob [8][7] = 10; /* Was missing in published program. Without this statement, */ /* Arr_2_Glob [8][7] would have an undefined value. */ /* Warning: With 16-Bit processors and Number_Of_Runs > 32000, */ /* overflow may occur for this array element. */ printf("\n"); printf("Dhrystone Benchmark, Version 2.1 (Language: C)\n"); printf("\n"); /* if (Reg) { printf ("Program compiled with 'register' attribute\n"); printf ("\n"); } else { printf ("Program compiled without 'register' attribute\n"); printf ("\n"); } */ if (Number_Of_Runs == 0) { printf("Please give the number of runs through the benchmark:\n"); return; } printf("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs); puts("\r\nplease waitting for a moment...\r\n"); /***************/ /* Start timer */ /***************/ Begin_Time = dtime(); for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index) { Proc_5(); Proc_4(); /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */ Int_1_Loc = 2; Int_2_Loc = 3; strcpy(Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING"); Enum_Loc = Ident_2; Bool_Glob = ! Func_2(Str_1_Loc, Str_2_Loc); /* Bool_Glob == 1 */ while (Int_1_Loc < Int_2_Loc) { /* loop body executed once */ Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc; /* Int_3_Loc == 7 */ Proc_7(Int_1_Loc, Int_2_Loc, &Int_3_Loc); /* Int_3_Loc == 7 */ Int_1_Loc += 1; } /* while */ /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ Proc_8(Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc); /* Int_Glob == 5 */ Proc_1(Ptr_Glob); for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index) /* loop body executed twice */ { if (Enum_Loc == Func_1(Ch_Index, 'C')) /* then, not executed */ { Proc_6(Ident_1, &Enum_Loc); strcpy(Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING"); Int_2_Loc = Run_Index; Int_Glob = Run_Index; } } /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */ Int_2_Loc = Int_2_Loc * Int_1_Loc; Int_1_Loc = Int_2_Loc / Int_3_Loc; Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc; /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */ Proc_2(&Int_1_Loc); /* Int_1_Loc == 5 */ } /* loop "for Run_Index" */ /**************/ /* Stop timer */ /**************/ End_Time = dtime(); printf("Execution ends\n"); printf("\n"); printf("Final values of the variables used in the benchmark:\n"); printf("\n"); printf("Int_Glob: %d\n", Int_Glob); printf(" should be: %d\n", 5); printf("Bool_Glob: %d\n", Bool_Glob); printf(" should be: %d\n", 1); printf("Ch_1_Glob: %c\n", Ch_1_Glob); printf(" should be: %c\n", 'A'); printf("Ch_2_Glob: %c\n", Ch_2_Glob); printf(" should be: %c\n", 'B'); printf("Arr_1_Glob[8]: %d\n", Arr_1_Glob[8]); printf(" should be: %d\n", 7); printf("Arr_2_Glob[8][7]: %d\n", Arr_2_Glob[8][7]); printf(" should be: Number_Of_Runs + 10\n"); printf("Ptr_Glob->\n"); printf(" Ptr_Comp: %d\n", (int) Ptr_Glob->Ptr_Comp); printf(" should be: (implementation-dependent)\n"); printf(" Discr: %d\n", Ptr_Glob->Discr); printf(" should be: %d\n", 0); printf(" Enum_Comp: %d\n", Ptr_Glob->variant.var_1.Enum_Comp); printf(" should be: %d\n", 2); printf(" Int_Comp: %d\n", Ptr_Glob->variant.var_1.Int_Comp); printf(" should be: %d\n", 17); printf(" Str_Comp: %s\n", Ptr_Glob->variant.var_1.Str_Comp); printf(" should be: DHRYSTONE PROGRAM, SOME STRING\n"); printf("Next_Ptr_Glob->\n"); printf(" Ptr_Comp: %d\n", (int) Next_Ptr_Glob->Ptr_Comp); printf(" should be: (implementation-dependent), same as above\n"); printf(" Discr: %d\n", Next_Ptr_Glob->Discr); printf(" should be: %d\n", 0); printf(" Enum_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp); printf(" should be: %d\n", 1); printf(" Int_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp); printf(" should be: %d\n", 18); printf(" Str_Comp: %s\n", Next_Ptr_Glob->variant.var_1.Str_Comp); printf(" should be: DHRYSTONE PROGRAM, SOME STRING\n"); printf("Int_1_Loc: %d\n", Int_1_Loc); printf(" should be: %d\n", 5); printf("Int_2_Loc: %d\n", Int_2_Loc); printf(" should be: %d\n", 13); printf("Int_3_Loc: %d\n", Int_3_Loc); printf(" should be: %d\n", 7); printf("Enum_Loc: %d\n", Enum_Loc); printf(" should be: %d\n", 1); printf("Str_1_Loc: %s\n", Str_1_Loc); printf(" should be: DHRYSTONE PROGRAM, 1'ST STRING\n"); printf("Str_2_Loc: %s\n", Str_2_Loc); printf(" should be: DHRYSTONE PROGRAM, 2'ND STRING\n"); printf("\n"); User_Time = End_Time - Begin_Time; if (User_Time < Too_Small_Time) { printf("Measured time too small to obtain meaningful results\n"); printf("Please increase number of runs\n"); printf("\n"); } else { Microseconds = User_Time * Mic_secs_Per_Second / (double) Number_Of_Runs; Dhrystones_Per_Second = (double) Number_Of_Runs / User_Time; Vax_Mips = Dhrystones_Per_Second / 1757.0; #ifdef ROPT printf("Register option selected? YES\n"); #else printf("Register option selected? NO\n"); strcpy(Reg_Define, "Register option not selected."); #endif printf("Microseconds for one run through Dhrystone: "); printf("%7.1f \n", Microseconds); printf("Dhrystones per Second: "); printf("%10.1f \n", Dhrystones_Per_Second); printf("VAX MIPS rating = %10.3f \n", Vax_Mips); printf("\n"); printf("\n"); printf("Dhrystone Benchmark, Version 2.1 (Language: C)\n"); printf("%s\n", Reg_Define); printf("Microseconds for one loop: %7.1f\n", Microseconds); printf("Dhrystones per second: %10.1f\n", Dhrystones_Per_Second); printf("VAX MIPS rating: %10.3f\n", Vax_Mips); } free(Next_Ptr_Glob); free(Ptr_Glob); } void Proc_1(REG Rec_Pointer Ptr_Val_Par) /* executed once */ { REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp; /* == Ptr_Glob_Next */ /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp, */ /* corresponds to "rename" in Ada, "with" in Pascal */ structassign(*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob); Ptr_Val_Par->variant.var_1.Int_Comp = 5; Next_Record->variant.var_1.Int_Comp = Ptr_Val_Par->variant.var_1.Int_Comp; Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp; Proc_3(&Next_Record->Ptr_Comp); /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp == Ptr_Glob->Ptr_Comp */ if (Next_Record->Discr == Ident_1) /* then, executed */ { Next_Record->variant.var_1.Int_Comp = 6; Proc_6(Ptr_Val_Par->variant.var_1.Enum_Comp, &Next_Record->variant.var_1.Enum_Comp); Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp; Proc_7(Next_Record->variant.var_1.Int_Comp, 10, &Next_Record->variant.var_1.Int_Comp); } else { /* not executed */ structassign(*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp); } } /* Proc_1 */ void Proc_2(One_Fifty *Int_Par_Ref) /******************/ /* executed once */ /* *Int_Par_Ref == 1, becomes 4 */ { One_Fifty Int_Loc; Enumeration Enum_Loc = Ident_1; Int_Loc = *Int_Par_Ref + 10; do /* executed once */ if (Ch_1_Glob == 'A') /* then, executed */ { Int_Loc -= 1; *Int_Par_Ref = Int_Loc - Int_Glob; Enum_Loc = Ident_1; } /* if */ while (Enum_Loc != Ident_1); /* true */ } /* Proc_2 */ void Proc_3(Rec_Pointer *Ptr_Ref_Par) /******************/ /* executed once */ /* Ptr_Ref_Par becomes Ptr_Glob */ { if (Ptr_Glob != Null) /* then, executed */ { *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp; } Proc_7(10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp); } /* Proc_3 */ void Proc_4(void) /* without parameters */ /*******/ /* executed once */ { Boolean Bool_Loc; Bool_Loc = Ch_1_Glob == 'A'; Bool_Glob = Bool_Loc | Bool_Glob; Ch_2_Glob = 'B'; } /* Proc_4 */ void Proc_5(void) /* without parameters */ /* executed once */ { Ch_1_Glob = 'A'; Bool_Glob = false; } /* Proc_5 */ /* Procedure for the assignment of structures, */ /* if the C compiler doesn't support this feature */ #ifdef NOSTRUCTASSIGN void memcpy(register char *d, register char *s, register int l) /* register char *d; register char *s; register int l; */ { while (l--) { *d++ = *s++; } } #endif