scuffed-code/icu4c/source/test/perf/leperf/letrperf.cpp

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/**************************************************************************
*
* Copyright (C) 2016 and later: Unicode, Inc. and others.
* License & terms of use: http://www.unicode.org/copyright.html#License
*
***************************************************************************
***************************************************************************
*
* Copyright (C) 2013, International Business Machines
* Corporation and others. All Rights Reserved.
*
************************************************************************/
/**
* Usage:
* build against a configured (but not built) ICU.
* example: cc -O2 test_LETableReference.cpp -I. -I/xsrl/II/include -I/xsrl/E/icu/source/tools/ctestfw
*/
#include "unicode/utimer.h"
#include "LETableReference.h"
#include <stdio.h>
#include <stdlib.h>
#define ITEM_COUNT 10000
long *items = 0;
struct OneObject {
long items[ITEM_COUNT];
};
struct Long {
long v;
};
struct CompObject {
Long items[ITEM_COUNT];
};
void time_null(void * /*ref*/) {
for(int i=0;i<ITEM_COUNT;i++) {
if(items[i]==2) {
return;
}
}
puts("error");
abort();
}
void time_obj(void * ref) {
OneObject &obj = *((OneObject*)ref);
for(int i=0;i<ITEM_COUNT;i++) {
if(obj.items[i]==2) {
return;
}
}
puts("error");
abort();
}
void time_obj2(void * ref) {
long *items2 = ((OneObject*)ref)->items;
for(int i=0;i<ITEM_COUNT;i++) {
if(items2[i]==2) {
return;
}
}
puts("error");
abort();
}
void time_letr1(void * ref) {
OneObject &obj = *((OneObject*)ref);
LETableReference data((const le_uint8*)ref, sizeof(OneObject));
LEErrorCode success = LE_NO_ERROR;
LEReferenceTo<OneObject> stuff(data, success);
if(LE_FAILURE(success)) {
puts("failure");
abort();
}
long *items2 = ((OneObject*)ref)->items;
for(int i=0;i<ITEM_COUNT;i++) {
if(items[i]==2) {
return;
}
}
puts("error");
abort();
}
void time_letr2(void * ref) {
OneObject &obj = *((OneObject*)ref);
LETableReference data((const le_uint8*)ref, sizeof(OneObject));
LEErrorCode success = LE_NO_ERROR;
long *items2 = ((OneObject*)ref)->items;
for(int i=0;i<ITEM_COUNT;i++) {
LEReferenceTo<OneObject> stuff(data, success);
if(LE_FAILURE(success)) {
puts("failure");
abort();
}
if(items[i]==2) {
return;
}
}
puts("error");
abort();
}
static void time_letr3(void * ref) {
LETableReference data((const le_uint8*)ref, sizeof(OneObject));
LEErrorCode success = LE_NO_ERROR;
LEReferenceTo<CompObject> comp(data, success);
LEReferenceToArrayOf<Long> longs(comp, success, (size_t)0, ITEM_COUNT);
if(LE_FAILURE(success)) {
puts("failure");
abort();
}
for(int i=0;i<ITEM_COUNT;i++) {
const Long &item = longs.getObject(i, success);
if(LE_FAILURE(success)) {
puts("failure");
abort();
}
if(item.v==2) {
return;
}
}
puts("error");
abort();
}
int main() {
double runTime = 2.0;
printf("Test of LETableReference<> timing. %.1fs per run.\n", runTime);
items = new long[ITEM_COUNT];
OneObject *oo = new OneObject();
CompObject *oo2 = new CompObject();
for(int i=0;i<ITEM_COUNT-1;i++) {
items[i] = oo->items[i] = oo2->items[i].v = (i%1024)+3;
}
items[ITEM_COUNT-1] = oo->items[ITEM_COUNT-1] = oo2->items[ITEM_COUNT-1].v = 2; // last one
puts("will call once..");
time_letr3((void*)oo2);
puts("testing all..");
int32_t loopCount;
double time_taken;
#define showTime(x,y) printf("%s:\ttesting...\r", #x); fflush(stdout); \
time_taken = utimer_loopUntilDone(runTime, &loopCount, x, y); \
printf("%s:\t%.1fs\t#%d\t%.1f/s\n", #x, time_taken, loopCount, loopCount/(double)time_taken);
// clear out cache
{
double oldTime = runTime;
runTime = 0.25;
showTime(time_null, NULL);
showTime(time_null, NULL);
showTime(time_null, NULL);
showTime(time_null, NULL);
runTime = oldTime;
}
puts("-- ready to start --");
showTime(time_null, NULL);
showTime(time_obj, (void*)oo);
showTime(time_obj2, (void*)oo);
showTime(time_letr1, (void*)oo2);
showTime(time_letr2, (void*)oo2);
showTime(time_letr3, (void*)oo2);
showTime(time_null, NULL);
delete [] items;
delete oo;
delete oo2;
}