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Unified Diff: icu46/source/test/perf/ucnvavailperf/ucnvavailperf.cpp

Issue 5516007: Check in the pristine copy of ICU 4.6... (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 10 years ago
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Index: icu46/source/test/perf/ucnvavailperf/ucnvavailperf.cpp
===================================================================
--- icu46/source/test/perf/ucnvavailperf/ucnvavailperf.cpp (revision 0)
+++ icu46/source/test/perf/ucnvavailperf/ucnvavailperf.cpp (revision 0)
@@ -0,0 +1,129 @@
+/*
+*******************************************************************************
+*
+* Copyright (C) 2009, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: ucnvavailperf.cpp
+* encoding: US-ASCII
+* 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;
+}
Property changes on: icu46/source/test/perf/ucnvavailperf/ucnvavailperf.cpp
___________________________________________________________________
Added: svn:eol-style
+ LF
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