bionic: add tests for properties
(cherry picked from commit 37d9f75dde881a0ba1c1b3253b1be19d4096963d)
Change-Id: Iac00ce10a4272032a1cbdbc4204277d6876e3365
diff --git a/tests/property_benchmark.cpp b/tests/property_benchmark.cpp
new file mode 100644
index 0000000..dbd11ad
--- /dev/null
+++ b/tests/property_benchmark.cpp
@@ -0,0 +1,116 @@
+/*
+ * 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"
+
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+
+#include <vector>
+
+extern void *__system_property_area__;
+
+#define TEST_NUM_PROPS \
+ Arg(1)->Arg(4)->Arg(16)->Arg(64)->Arg(128)->Arg(247)
+
+struct LocalPropertyTestState {
+ LocalPropertyTestState(int nprops) : nprops(nprops) {
+ static const char prop_name_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_";
+ old_pa = __system_property_area__;
+ pa = malloc(PA_SIZE);
+ __system_property_area_init(pa);
+
+ 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]);
+ }
+ }
+
+ ~LocalPropertyTestState() {
+ __system_property_area__ = old_pa;
+ for (int i = 0; i < nprops; i++) {
+ delete names[i];
+ delete values[i];
+ }
+ delete names;
+ delete name_lens;
+ delete values;
+ delete value_lens;
+ free(pa);
+ }
+public:
+ const int nprops;
+ char **names;
+ int *name_lens;
+ char **values;
+ int *value_lens;
+
+private:
+ void *pa;
+ void *old_pa;
+};
+
+static void BM_property_get(int iters, int nprops)
+{
+ StopBenchmarkTiming();
+
+ LocalPropertyTestState pa(nprops);
+ char value[PROP_VALUE_MAX];
+
+ StartBenchmarkTiming();
+
+ for (int i = 0; i < iters; i++) {
+ for (int j = 0; j < nprops; j++) {
+ __system_property_get(pa.names[j], value);
+ }
+ }
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_property_get)->TEST_NUM_PROPS;
+
+static void BM_property_find(int iters, int nprops)
+{
+ StopBenchmarkTiming();
+
+ LocalPropertyTestState pa(nprops);
+
+ StartBenchmarkTiming();
+
+ for (int i = 0; i < iters; i++) {
+ for (int j = 0; j < nprops; j++) {
+ __system_property_find(pa.names[j]);
+ }
+ }
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_property_find)->TEST_NUM_PROPS;