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testCopy.cpp
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343 lines (277 loc) · 6.52 KB
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/*
Copyright (C) 2003-2006 MySQL AB
All rights reserved. Use is subject to license terms.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <ndb_global.h>
#include <NdbOut.hpp>
#include <NdbTick.h>
#ifdef __NDB_FORTE6
#define HAND
bool hand = true;
#else
bool hand = false;
#endif
struct Data7 {
Uint32 data[7];
#ifdef HAND
inline Data7& operator=(const Data7 & o){
Uint32 t0 = o.data[0];
Uint32 t1 = o.data[1];
Uint32 t2 = o.data[2];
Uint32 t3 = o.data[3];
Uint32 t4 = o.data[4];
Uint32 t5 = o.data[5];
Uint32 t6 = o.data[6];
data[0] = t0;
data[1] = t1;
data[2] = t2;
data[3] = t3;
data[4] = t4;
data[5] = t5;
data[6] = t6;
return * this;
}
#endif
};
struct Data25 {
Uint32 data[25];
};
struct TestSignal {
Data7 head;
Data25 data;
};
Uint32 g_time = 3000;
Uint32 g_count = 8*2048;
TestSignal g_signal;
TestSignal * g_jobBuffer;
template<Uint32 LEN>
inline
void
MEMCOPY(Uint32 * to, const Uint32 * from){
Uint32 t0 ;
Uint32 t1 ;
Uint32 t2 ;
Uint32 t3 ;
Uint32 len = LEN;
while(len > 4){
t0 = from[0];
t1 = from[1];
t2 = from[2];
t3 = from[3];
to[0] = t0;
to[1] = t1;
to[2] = t2;
to[3] = t3;
to += 4;
from += 4;
len -= 4;
}
//ndbout_c("len = %d", len);
t0 = from[0];
t1 = from[1];
t2 = from[2];
switch(len & 3){
case 3:
//ndbout_c("3");
to[2] = t2;
case 2:
//ndbout_c("2");
to[1] = t1;
case 1:
//ndbout_c("1");
to[0] = t0;
}
}
inline
void
MEMCOPY_NO_WORDS(Uint32 * to, const Uint32 * from, Uint32 len){
Uint32 t0 ;
Uint32 t1 ;
Uint32 t2 ;
Uint32 t3 ;
while(len > 4){
t0 = from[0];
t1 = from[1];
t2 = from[2];
t3 = from[3];
to[0] = t0;
to[1] = t1;
to[2] = t2;
to[3] = t3;
to += 4;
from += 4;
len -= 4;
}
//ndbout_c("len = %d", len);
t0 = from[0];
t1 = from[1];
t2 = from[2];
switch(len & 3){
case 3:
//ndbout_c("3");
to[2] = t2;
case 2:
//ndbout_c("2");
to[1] = t1;
case 1:
//ndbout_c("1");
to[0] = t0;
}
}
inline
void
copy1(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
Uint32 t0 = ts.head.data[0];
Uint32 t1 = ts.head.data[1];
Uint32 t2 = ts.head.data[2];
Uint32 t3 = ts.head.data[3];
Uint32 t4 = ts.head.data[4];
Uint32 t5 = ts.head.data[5];
Uint32 t6 = ts.head.data[6];
dst.head.data[0] = t0;
dst.head.data[1] = t1;
dst.head.data[2] = t2;
dst.head.data[3] = t3;
dst.head.data[4] = t4;
dst.head.data[5] = t5;
dst.head.data[6] = t6;
}
inline
void
copy2(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
Uint32 t0 = ts.head.data[0];
Uint32 t1 = ts.head.data[1];
Uint32 t2 = ts.head.data[2];
Uint32 t3 = ts.head.data[3];
dst.head.data[0] = t0;
dst.head.data[1] = t1;
dst.head.data[2] = t2;
dst.head.data[3] = t3;
Uint32 t4 = ts.head.data[4];
Uint32 t5 = ts.head.data[5];
Uint32 t6 = ts.head.data[6];
dst.head.data[4] = t4;
dst.head.data[5] = t5;
dst.head.data[6] = t6;
}
inline
void
copy3(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
dst.head = ts.head;
}
inline
void
copy4(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
memcpy(&dst.head.data[0], &ts.head.data[0], sizeof(Data7));
}
inline
void
copy5(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
MEMCOPY_NO_WORDS(&dst.head.data[0], &ts.head.data[0], 7);
}
inline
void
copy6(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
MEMCOPY<7>(&dst.head.data[0], &ts.head.data[0]);
}
inline
void
copy7(Uint32 i, TestSignal & ts){
TestSignal & dst = g_jobBuffer[i];
#if (__GNUC__ >= 3 ) || (__GNUC__ == 2 && __GNUC_MINOR >= 95)
__builtin_memcpy(&dst.head.data[0], &ts.head.data[0], sizeof(Data7));
#else
dst.head = ts.head;
#endif
}
template<void (* C)(Uint32 i, TestSignal & ts)>
int
doTime(Uint32 ms){
Uint64 ms1, ms2;
const Uint32 count = g_count;
for(Uint32 i = 0; i<count; i++)
C(i, g_signal);
for(Uint32 i = 0; i<count; i++)
C(i, g_signal);
Uint32 laps = 0;
ms1 = NdbTick_CurrentMillisecond();
do {
for(int j = 100; j>= 0; j--)
for(Uint32 i = 0; i<count; i++){
C(i, g_signal);
}
ms2 = NdbTick_CurrentMillisecond();
laps += 100;
} while((ms2 - ms1) < ms);
return laps;
}
template<void (* C)(Uint32 i, TestSignal & ts)>
void doCopyLap(Uint32 laps, const char * title){
Uint64 ms1, ms2;
const Uint32 count = g_count;
for(Uint32 i = 0; i<count; i++)
C(i, g_signal);
laps--;
for(Uint32 i = 0; i<count; i++)
C(i, g_signal);
laps--;
Uint32 div = laps;
ms1 = NdbTick_CurrentMillisecond();
while(laps > 0){
for(Uint32 i = 0; i<count; i++){
#if (__GNUC__ == 3 && __GNUC_MINOR >= 1)
_builtin_prefetch(&g_jobBuffer[i], 1, 0);
#endif
C(i, g_signal);
}
laps--;
}
ms2 = NdbTick_CurrentMillisecond();
ms2 -= ms1;
Uint32 diff = ms2;
ndbout_c("%s : %d laps in %d millis => %d copies/sec",
title, div, diff, (1000*div*g_count+(diff/2))/diff);
}
int
main(int argc, const char ** argv){
if(argc > 1)
g_count = atoi(argv[1]);
if(argc > 2)
g_time = atoi(argv[2]);
ndbout_c("Using %d entries => %d kB ",
g_count,
g_count * sizeof(TestSignal) / 1024);
ndbout_c("Testing for %d ms", g_time);
ndbout_c("Using %s copy-constructor",
(hand ? "hand written" : "compiler generated"));
g_jobBuffer = new TestSignal[g_count + 1];
for(int i = 0; i<10; i++)
memset(g_jobBuffer, 0, g_count * sizeof(TestSignal));
int laps = doTime<copy2>(g_time);
ndbout_c("Laps = %d", laps);
doCopyLap<copy2>(laps, "4 t-variables");
doCopyLap<copy3>(laps, "copy constr. ");
doCopyLap<copy1>(laps, "7 t-variables");
doCopyLap<copy4>(laps, "mem copy ");
doCopyLap<copy5>(laps, "mem copy hand");
doCopyLap<copy6>(laps, "mem copy temp");
doCopyLap<copy7>(laps, "mem copy gcc ");
delete[] g_jobBuffer;
return 0;
}