170010018
/
minix3
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
minix3/commands/dhrystone/dhrystone.c

581 lines
12 KiB
C
Raw Permalink Blame History

/* dhrystone - benchmark program */
#define REGISTER
/*
*
* "DHRYSTONE" Benchmark Program
*
* Version: C/1.1, 12/01/84
*
* Date: PROGRAM updated 01/06/86, COMMENTS changed 01/31/87
*
* Author: Reinhold P. Weicker, CACM Vol 27, No 10, 10/84 pg.1013
* Translated from ADA by Rick Richardson
* Every method to preserve ADA-likeness has been used,
* at the expense of C-ness.
*
* Compile: cc -O dry.c -o drynr : No registers
* cc -O -DREG=register dry.c -o dryr : Registers
*
* Defines: Defines are provided for old C compiler's
* which don't have enums, and can't assign structures.
* The time(2) function is library dependant; Most
* return the time in seconds, but beware of some, like
* Aztec C, which return other units.
* The LOOPS define is initially set for 50000 loops.
* If you have a machine with large integers and is
* very fast, please change this number to 500000 to
* get better accuracy. Please select the way to
* measure the execution time using the TIME define.
* For single user machines, time(2) is adequate. For
* multi-user machines where you cannot get single-user
* access, use the times(2) function. Be careful to
* adjust the HZ parameter below for the units which
* are returned by your times(2) function. You can
* sometimes find this in <sys/param.h>. If you have
* neither time(2) nor times(2), use a stopwatch in
* the dead of the night.
* Use a "printf" at the point marked "start timer"
* to begin your timings. DO NOT use the UNIX "time(1)"
* command, as this will measure the total time to
* run this program, which will (erroneously) include
* the time to malloc(3) storage and to compute the
* time it takes to do nothing.
*
* Run: drynr; dryr
*
* Results: If you get any new machine/OS results, please send to:
*
* ihnp4!castor!pcrat!rick
*
* and thanks to all that do.
*
* Note: I order the list in increasing performance of the
* "with registers" benchmark. If the compiler doesn't
* provide register variables, then the benchmark
* is the same for both REG and NOREG.
*
* PLEASE: Send complete information about the machine type,
* clock speed, OS and C manufacturer/version. If
* the machine is modified, tell me what was done.
* On UNIX, execute uname -a and cc -V to get this info.
*
* 80x8x NOTE: 80x8x benchers: please try to do all memory models
* for a particular compiler.
*
*
* The following program contains statements of a high-level programming
* language (C) in a distribution considered representative:
*
* assignments 53%
* control statements 32%
* procedure, function calls 15%
*
* 100 statements are dynamically executed. The program is balanced with
* respect to the three aspects:
* - statement type
* - operand type (for simple data types)
* - operand access
* operand global, local, parameter, or constant.
*
* The combination of these three aspects is balanced only approximately.
*
* The program does not compute anything meaningfull, but it is
* syntactically and semantically correct.
*
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
/* Accuracy of timings and human fatigue controlled by next two lines */
/*#define LOOPS 50000 */ /* Use this for slow or 16 bit machines */
/*#define LOOPS 500000 */ /* Use this for faster machines */
/*#define LOOPS (sizeof(int) == 2 ? 50000 : 1000000)*/
/* Seconds to run */
#define SECONDS 15
/* Compiler dependent options */
#define NOENUM /* Define if compiler has no enum's */
/* #define NOSTRUCTASSIGN */ /* Define if compiler can't assign structures*/
/* Define only one of the next two defines */
#define TIMES /* Use times(2) time function */
/*#define TIME */ /* Use time(2) time function */
#ifdef TIME
/* Ganularity of time(2) is of course 1 second */
#define HZ 1
#endif
#ifdef TIMES
/* Define the granularity of your times(2) function */
/*#define HZ 50 */ /* times(2) returns 1/50 second (europe?) */
/*#define HZ 60 */ /* times(2) returns 1/60 second (most) */
/*#define HZ 100 */ /* times(2) returns 1/100 second (WECo) */
#endif
/* For compatibility with goofed up version */
/*#undef GOOF */ /* Define if you want the goofed up version */
#ifdef GOOF
char Version[] = "1.0";
#else
char Version[] = "1.1";
#endif
#ifdef NOSTRUCTASSIGN
#define structassign(d, s) memcpy(&(d), &(s), sizeof(d))
#else
#define structassign(d, s) d = s
#endif
#ifdef NOENUM
#define Ident1 1
#define Ident2 2
#define Ident3 3
#define Ident4 4
#define Ident5 5
typedef int Enumeration;
#else
typedef enum {
Ident1, Ident2, Ident3, Ident4, Ident5
} Enumeration;
#endif
typedef int OneToThirty;
typedef int OneToFifty;
typedef char CapitalLetter;
typedef char String30[31];
typedef int Array1Dim[51];
typedef int Array2Dim[51][51];
struct Record {
struct Record *PtrComp;
Enumeration Discr;
Enumeration EnumComp;
OneToFifty IntComp;
String30 StringComp;
};
typedef struct Record RecordType;
typedef RecordType *RecordPtr;
typedef int boolean;
#ifdef NULL
#undef NULL
#endif
#define NULL 0
#define TRUE 1
#define FALSE 0
#ifndef REG
#define REG
#endif
#ifdef TIMES
#include <sys/times.h>
#endif
int main(void);
void prep_timer(void);
void timeout(int sig);
void Proc0(void);
void Proc1(RecordPtr PtrParIn);
void Proc2(OneToFifty *IntParIO);
void Proc3(RecordPtr *PtrParOut);
void Proc4(void);
void Proc5(void);
void Proc6(Enumeration EnumParIn, Enumeration *EnumParOut);
void Proc7(OneToFifty IntParI1, OneToFifty IntParI2, OneToFifty
*IntParOut);
void Proc8(Array1Dim Array1Par, Array2Dim Array2Par, OneToFifty
IntParI1, OneToFifty IntParI2);
boolean Func2(String30 StrParI1, String30 StrParI2);
boolean Func3(Enumeration EnumParIn);
Enumeration Func1(int CharPar1, int CharPar2);
int main()
{
Proc0();
return(0);
}
#if __STDC__
volatile int done;
#else
int done;
#endif
void prep_timer()
{
signal(SIGALRM, timeout);
done = 0;
}
void timeout(sig)
int sig;
{
done = 1;
}
/* Package 1 */
int IntGlob;
boolean BoolGlob;
char Char1Glob;
char Char2Glob;
Array1Dim Array1Glob;
Array2Dim Array2Glob;
RecordPtr PtrGlb;
RecordPtr PtrGlbNext;
void Proc0()
{
OneToFifty IntLoc1;
REG OneToFifty IntLoc2;
OneToFifty IntLoc3;
REG char CharIndex;
Enumeration EnumLoc;
String30 String1Loc;
String30 String2Loc;
register unsigned long i;
unsigned long starttime;
unsigned long benchtime;
unsigned long nulltime;
unsigned long nullloops;
unsigned long benchloops;
unsigned long ticks_per_sec;
#ifdef TIMES
struct tms tms;
#endif
#ifdef HZ
#define ticks_per_sec HZ
#else
ticks_per_sec = sysconf(_SC_CLK_TCK);
#endif
i = 0;
prep_timer();
#ifdef TIME
starttime = time((long *) 0);
#endif
#ifdef TIMES
times(&tms);
starttime = tms.tms_utime;
#endif
alarm(1);
while (!done) i++;
#ifdef TIME
nulltime = time((long *) 0) - starttime; /* Computes o'head of loop */
#endif
#ifdef TIMES
times(&tms);
nulltime = tms.tms_utime - starttime; /* Computes overhead of looping */
#endif
nullloops = i;
PtrGlbNext = (RecordPtr) malloc(sizeof(RecordType));
PtrGlb = (RecordPtr) malloc(sizeof(RecordType));
PtrGlb->PtrComp = PtrGlbNext;
PtrGlb->Discr = Ident1;
PtrGlb->EnumComp = Ident3;
PtrGlb->IntComp = 40;
strcpy(PtrGlb->StringComp, "DHRYSTONE PROGRAM, SOME STRING");
#ifndef GOOF
strcpy(String1Loc, "DHRYSTONE PROGRAM, 1'ST STRING"); /* GOOF */
#endif
Array2Glob[8][7] = 10; /* Was missing in published program */
/*****************
-- Start Timer --
*****************/
i = 0;
prep_timer();
#ifdef TIME
starttime = time((long *) 0);
#endif
#ifdef TIMES
times(&tms);
starttime = tms.tms_utime;
#endif
alarm(SECONDS);
while (!done) {
i++;
Proc5();
Proc4();
IntLoc1 = 2;
IntLoc2 = 3;
strcpy(String2Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
EnumLoc = Ident2;
BoolGlob = !Func2(String1Loc, String2Loc);
while (IntLoc1 < IntLoc2) {
IntLoc3 = 5 * IntLoc1 - IntLoc2;
Proc7(IntLoc1, IntLoc2, &IntLoc3);
++IntLoc1;
}
Proc8(Array1Glob, Array2Glob, IntLoc1, IntLoc3);
Proc1(PtrGlb);
for (CharIndex = 'A'; CharIndex <= Char2Glob; ++CharIndex)
if (EnumLoc == Func1(CharIndex, 'C'))
Proc6(Ident1, &EnumLoc);
IntLoc3 = IntLoc2 * IntLoc1;
IntLoc2 = IntLoc3 / IntLoc1;
IntLoc2 = 7 * (IntLoc3 - IntLoc2) - IntLoc1;
Proc2(&IntLoc1);
}
/*****************
-- Stop Timer --
*****************/
#ifdef TIME
benchtime = time((long *) 0) - starttime;
#endif
#ifdef TIMES
times(&tms);
benchtime = tms.tms_utime - starttime;
#endif
benchloops = i;
/* Approximately correct benchtime to the nulltime. */
benchtime -= nulltime / (nullloops / benchloops);
printf("Dhrystone(%s) time for %lu passes = %lu.%02lu\n",
Version,
benchloops, benchtime / ticks_per_sec,
benchtime % ticks_per_sec * 100 / ticks_per_sec);
printf("This machine benchmarks at %lu dhrystones/second\n",
benchloops * ticks_per_sec / benchtime);
}
void Proc1(PtrParIn)
REG RecordPtr PtrParIn;
{
#define NextRecord (*(PtrParIn->PtrComp))
structassign(NextRecord, *PtrGlb);
PtrParIn->IntComp = 5;
NextRecord.IntComp = PtrParIn->IntComp;
NextRecord.PtrComp = PtrParIn->PtrComp;
Proc3((RecordPtr *)NextRecord.PtrComp);
if (NextRecord.Discr == Ident1) {
NextRecord.IntComp = 6;
Proc6(PtrParIn->EnumComp, &NextRecord.EnumComp);
NextRecord.PtrComp = PtrGlb->PtrComp;
Proc7(NextRecord.IntComp, 10, &NextRecord.IntComp);
} else
structassign(*PtrParIn, NextRecord);
#undef NextRecord
}
void Proc2(IntParIO)
OneToFifty *IntParIO;
{
REG OneToFifty IntLoc;
REG Enumeration EnumLoc;
IntLoc = *IntParIO + 10;
for (;;) {
if (Char1Glob == 'A') {
--IntLoc;
*IntParIO = IntLoc - IntGlob;
EnumLoc = Ident1;
}
if (EnumLoc == Ident1) break;
}
}
void Proc3(PtrParOut)
RecordPtr *PtrParOut;
{
if (PtrGlb != NULL)
*PtrParOut = PtrGlb->PtrComp;
else
IntGlob = 100;
Proc7(10, IntGlob, &PtrGlb->IntComp);
}
void Proc4()
{
REG boolean BoolLoc;
BoolLoc = Char1Glob == 'A';
BoolLoc |= BoolGlob;
Char2Glob = 'B';
}
void Proc5()
{
Char1Glob = 'A';
BoolGlob = FALSE;
}
void Proc6(EnumParIn, EnumParOut)
REG Enumeration EnumParIn;
REG Enumeration *EnumParOut;
{
*EnumParOut = EnumParIn;
if (!Func3(EnumParIn)) *EnumParOut = Ident4;
switch (EnumParIn) {
case Ident1: *EnumParOut = Ident1; break;
case Ident2:
if (IntGlob > 100)
*EnumParOut = Ident1;
else
*EnumParOut = Ident4;
break;
case Ident3: *EnumParOut = Ident2; break;
case Ident4:
break;
case Ident5: *EnumParOut = Ident3;
}
}
void Proc7(IntParI1, IntParI2, IntParOut)
OneToFifty IntParI1;
OneToFifty IntParI2;
OneToFifty *IntParOut;
{
REG OneToFifty IntLoc;
IntLoc = IntParI1 + 2;
*IntParOut = IntParI2 + IntLoc;
}
void Proc8(Array1Par, Array2Par, IntParI1, IntParI2)
Array1Dim Array1Par;
Array2Dim Array2Par;
OneToFifty IntParI1;
OneToFifty IntParI2;
{
REG OneToFifty IntLoc;
REG OneToFifty IntIndex;
IntLoc = IntParI1 + 5;
Array1Par[IntLoc] = IntParI2;
Array1Par[IntLoc + 1] = Array1Par[IntLoc];
Array1Par[IntLoc + 30] = IntLoc;
for (IntIndex = IntLoc; IntIndex <= (IntLoc + 1); ++IntIndex)
Array2Par[IntLoc][IntIndex] = IntLoc;
++Array2Par[IntLoc][IntLoc - 1];
Array2Par[IntLoc + 20][IntLoc] = Array1Par[IntLoc];
IntGlob = 5;
}
Enumeration Func1(CharPar1, CharPar2)
CapitalLetter CharPar1;
CapitalLetter CharPar2;
{
REG CapitalLetter CharLoc1;
REG CapitalLetter CharLoc2;
CharLoc1 = CharPar1;
CharLoc2 = CharLoc1;
if (CharLoc2 != CharPar2)
return(Ident1);
else
return(Ident2);
}
boolean Func2(StrParI1, StrParI2)
String30 StrParI1;
String30 StrParI2;
{
REG OneToThirty IntLoc;
REG CapitalLetter CharLoc;
IntLoc = 1;
while (IntLoc <= 1)
if (Func1(StrParI1[IntLoc], StrParI2[IntLoc + 1]) == Ident1) {
CharLoc = 'A';
++IntLoc;
}
if (CharLoc >= 'W' && CharLoc <= 'Z') IntLoc = 7;
if (CharLoc == 'X')
return(TRUE);
else {
if (strcmp(StrParI1, StrParI2) > 0) {
IntLoc += 7;
return(TRUE);
} else
return(FALSE);
}
}
boolean Func3(EnumParIn)
REG Enumeration EnumParIn;
{
REG Enumeration EnumLoc;
EnumLoc = EnumParIn;
if (EnumLoc == Ident3) return(TRUE);
return(FALSE);
}
#ifdef NOSTRUCTASSIGN
memcpy(d, s, l)
register char *d;
register char *s;
register int l;
{
while (l--) *d++ = *s++;
}
#endif
Reference in New Issue View Git Blame Copy Permalink