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 |
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Added: svn:eol-style |
+ LF |