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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "benchmark.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
#include <sys/_system_properties.h>
#include <vector>
#include <string>
extern void *__system_property_area__;
#define TEST_NUM_PROPS \
Arg(1)->Arg(4)->Arg(16)->Arg(64)->Arg(128)->Arg(256)->Arg(512)->Arg(1024)
struct LocalPropertyTestState {
LocalPropertyTestState(int nprops) : nprops(nprops), valid(false) {
static const char prop_name_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_";
const char* android_data = getenv("ANDROID_DATA");
if (android_data == NULL) {
printf("ANDROID_DATA environment variable not set\n");
return;
}
char dir_template[PATH_MAX];
snprintf(dir_template, sizeof(dir_template), "%s/local/tmp/prop-XXXXXX", android_data);
char *dirname = mkdtemp(dir_template);
if (!dirname) {
printf("making temp file for test state failed (is %s/local/tmp writable?): %s\n",
android_data, strerror(errno));
return;
}
old_pa = __system_property_area__;
__system_property_area__ = NULL;
pa_dirname = dirname;
pa_filename = pa_dirname + "/__properties__";
__system_property_set_filename(pa_filename.c_str());
__system_property_area_init();
names = new char* [nprops];
name_lens = new int[nprops];
values = new char* [nprops];
value_lens = new int[nprops];
srandom(nprops);
for (int i = 0; i < nprops; i++) {
name_lens[i] = random() % PROP_NAME_MAX;
names[i] = new char[PROP_NAME_MAX + 1];
for (int j = 0; j < name_lens[i]; j++) {
names[i][j] = prop_name_chars[random() % (sizeof(prop_name_chars) - 1)];
}
names[i][name_lens[i]] = 0;
value_lens[i] = random() % PROP_VALUE_MAX;
values[i] = new char[PROP_VALUE_MAX];
for (int j = 0; j < value_lens[i]; j++) {
values[i][j] = prop_name_chars[random() % (sizeof(prop_name_chars) - 1)];
}
__system_property_add(names[i], name_lens[i], values[i], value_lens[i]);
}
valid = true;
}
~LocalPropertyTestState() {
if (!valid)
return;
__system_property_area__ = old_pa;
__system_property_set_filename(PROP_FILENAME);
unlink(pa_filename.c_str());
rmdir(pa_dirname.c_str());
for (int i = 0; i < nprops; i++) {
delete names[i];
delete values[i];
}
delete[] names;
delete[] name_lens;
delete[] values;
delete[] value_lens;
}
public:
const int nprops;
char **names;
int *name_lens;
char **values;
int *value_lens;
bool valid;
private:
std::string pa_dirname;
std::string pa_filename;
void *old_pa;
};
static void BM_property_get(int iters, int nprops)
{
StopBenchmarkTiming();
LocalPropertyTestState pa(nprops);
char value[PROP_VALUE_MAX];
if (!pa.valid)
return;
srandom(iters * nprops);
StartBenchmarkTiming();
for (int i = 0; i < iters; i++) {
__system_property_get(pa.names[random() % nprops], value);
}
StopBenchmarkTiming();
}
BENCHMARK(BM_property_get)->TEST_NUM_PROPS;
static void BM_property_find(int iters, int nprops)
{
StopBenchmarkTiming();
LocalPropertyTestState pa(nprops);
if (!pa.valid)
return;
srandom(iters * nprops);
StartBenchmarkTiming();
for (int i = 0; i < iters; i++) {
__system_property_find(pa.names[random() % nprops]);
}
StopBenchmarkTiming();
}
BENCHMARK(BM_property_find)->TEST_NUM_PROPS;
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