You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
4.2 KiB
136 lines
4.2 KiB
/*
|
|
*******************************************************************************
|
|
*
|
|
* © 2016 and later: Unicode, Inc. and others.
|
|
* License & terms of use: http://www.unicode.org/copyright.html
|
|
*
|
|
*******************************************************************************
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2009, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: ucnvavailperf.cpp
|
|
* encoding: UTF-8
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2009apr06
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* Test performance (time & memory) of ucnv_countAvailable(),
|
|
* for a before-and-after comparison of
|
|
* ticket 6441: make ucnv_countAvailable() not fully load converters
|
|
*
|
|
* Run with one optional command-line argument:
|
|
* You can specify the path to the ICU data directory.
|
|
*
|
|
* I built the common (icuuc) library with the following modification,
|
|
* switching between old (pre-ticket-6441) behavior of actually
|
|
* trying to load all converters and new behavior of just doing enough
|
|
* to test availability.
|
|
*
|
|
* Code in the ucnv_bld.c haveAvailableConverterList() function:
|
|
#if 0
|
|
// old pre-ticket-6441 behavior
|
|
ucnv_close(ucnv_createConverter(&tempConverter, converterName, &localStatus));
|
|
if (U_SUCCESS(localStatus)) {
|
|
#else
|
|
// new behavior
|
|
if (ucnv_canCreateConverter(converterName, &localStatus)) {
|
|
#endif
|
|
*/
|
|
|
|
#include <malloc.h>
|
|
#include <stdio.h>
|
|
#include "unicode/utypes.h"
|
|
#include "unicode/putil.h"
|
|
#include "unicode/uclean.h"
|
|
#include "unicode/ucnv.h"
|
|
#include "unicode/utimer.h"
|
|
|
|
static size_t icuMemUsage = 0;
|
|
|
|
U_CDECL_BEGIN
|
|
|
|
void *U_CALLCONV
|
|
my_alloc(const void *context, size_t size) {
|
|
size_t *p = (size_t *)malloc(size + sizeof(size_t));
|
|
if (p != NULL) {
|
|
icuMemUsage += size;
|
|
*p = size;
|
|
return p + 1;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
void U_CALLCONV
|
|
my_free(const void *context, void *mem) {
|
|
if (mem != NULL) {
|
|
const size_t *p = (const size_t *)mem - 1;
|
|
icuMemUsage -= *p;
|
|
free((void *)p);
|
|
}
|
|
}
|
|
|
|
// Not used in the common library.
|
|
void *U_CALLCONV
|
|
my_realloc(const void *context, void *mem, size_t size) {
|
|
my_free(context, mem);
|
|
return NULL;
|
|
}
|
|
|
|
U_CDECL_END
|
|
|
|
int main(int argc, const char *argv[]) {
|
|
UErrorCode errorCode = U_ZERO_ERROR;
|
|
|
|
// Hook in our own memory allocation functions so that we can measure
|
|
// the memory usage.
|
|
u_setMemoryFunctions(NULL, my_alloc, my_realloc, my_free, &errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
fprintf(stderr,
|
|
"u_setMemoryFunctions() failed - %s\n",
|
|
u_errorName(errorCode));
|
|
return errorCode;
|
|
}
|
|
|
|
if (argc > 1) {
|
|
printf("u_setDataDirectory(%s)\n", argv[1]);
|
|
u_setDataDirectory(argv[1]);
|
|
}
|
|
|
|
// Preload a purely algorithmic converter via an alias,
|
|
// to make sure that relevant data can be loaded and to set up
|
|
// caches and such that are needed even if none of the data-driven
|
|
// converters needs to be loaded.
|
|
ucnv_close(ucnv_open("ibm-1208", &errorCode));
|
|
if(U_FAILURE(errorCode)) {
|
|
fprintf(stderr,
|
|
"unable to open UTF-8 converter via an alias - %s\n",
|
|
u_errorName(errorCode));
|
|
return errorCode;
|
|
}
|
|
|
|
printf("memory usage after ucnv_open(ibm-1208): %lu\n", (long)icuMemUsage);
|
|
|
|
UTimer start_time;
|
|
utimer_getTime(&start_time);
|
|
// Measure the time to find out the list of actually available converters.
|
|
int32_t count = ucnv_countAvailable();
|
|
double elapsed = utimer_getElapsedSeconds(&start_time);
|
|
printf("ucnv_countAvailable() reports that %d converters are available.\n", count);
|
|
printf("ucnv_countAvailable() took %g seconds to figure this out.\n", elapsed);
|
|
printf("memory usage after ucnv_countAvailable(): %lu\n", (long)icuMemUsage);
|
|
|
|
ucnv_flushCache();
|
|
printf("memory usage after ucnv_flushCache(): %lu\n", (long)icuMemUsage);
|
|
|
|
u_cleanup();
|
|
printf("memory usage after u_cleanup(): %lu\n", (long)icuMemUsage);
|
|
|
|
return 0;
|
|
}
|