Add ResTable_sparseTypeEntry support
Benchmarks on bullhead-userdebug show that there is a negligent
performance impact when using sparse entries on a 30% loaded
sparse type of 1000 resources.
Benchmark Time CPU Iterations
-----------------------------------------------------------------------------------
BM_SparseEntryGetResourceSparseLarge 255 ns 254 ns 2751408
BM_SparseEntryGetResourceNotSparseLarge 254 ns 254 ns 2756534
Bug: 27381711
Test: make libandroidfw_tests aapt2_tests
Change-Id: I051ea22f2f6b2bc3696e446adc9e2a34be18009f
diff --git a/libs/androidfw/tests/SparseEntry_bench.cpp b/libs/androidfw/tests/SparseEntry_bench.cpp
new file mode 100644
index 0000000..1ebf7ce
--- /dev/null
+++ b/libs/androidfw/tests/SparseEntry_bench.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2017 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 "androidfw/AssetManager.h"
+#include "androidfw/ResourceTypes.h"
+
+#include "BenchmarkHelpers.h"
+#include "TestHelpers.h"
+#include "data/sparse/R.h"
+
+namespace sparse = com::android::sparse;
+
+namespace android {
+
+static void BM_SparseEntryGetResourceSparseSmall(benchmark::State& state) {
+ ResTable_config config;
+ memset(&config, 0, sizeof(config));
+ config.sdkVersion = 26;
+ GetResourceBenchmarkOld({GetTestDataPath() + "/sparse/sparse.apk"}, &config,
+ sparse::R::integer::foo_9, state);
+}
+BENCHMARK(BM_SparseEntryGetResourceSparseSmall);
+
+static void BM_SparseEntryGetResourceNotSparseSmall(benchmark::State& state) {
+ ResTable_config config;
+ memset(&config, 0, sizeof(config));
+ config.sdkVersion = 26;
+ GetResourceBenchmarkOld({GetTestDataPath() + "/sparse/not_sparse.apk"}, &config,
+ sparse::R::integer::foo_9, state);
+}
+BENCHMARK(BM_SparseEntryGetResourceNotSparseSmall);
+
+static void BM_SparseEntryGetResourceSparseLarge(benchmark::State& state) {
+ ResTable_config config;
+ memset(&config, 0, sizeof(config));
+ config.sdkVersion = 26;
+ GetResourceBenchmarkOld({GetTestDataPath() + "/sparse/sparse.apk"}, &config,
+ sparse::R::string::foo_999, state);
+}
+BENCHMARK(BM_SparseEntryGetResourceSparseLarge);
+
+static void BM_SparseEntryGetResourceNotSparseLarge(benchmark::State& state) {
+ ResTable_config config;
+ memset(&config, 0, sizeof(config));
+ config.sdkVersion = 26;
+ GetResourceBenchmarkOld({GetTestDataPath() + "/sparse/not_sparse.apk"}, &config,
+ sparse::R::string::foo_999, state);
+}
+BENCHMARK(BM_SparseEntryGetResourceNotSparseLarge);
+
+} // namespace android