ART: Swap-space in the compiler
Introduce a swap-space and corresponding allocator to transparently
switch native allocations to memory backed by a file.
Bug: 18596910
(cherry picked from commit 62746d8d9c4400e4764f162b22bfb1a32be287a9)
Change-Id: I131448f3907115054a592af73db86d2b9257ea33
diff --git a/compiler/utils/swap_space_test.cc b/compiler/utils/swap_space_test.cc
new file mode 100644
index 0000000..bf50ac3
--- /dev/null
+++ b/compiler/utils/swap_space_test.cc
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2014 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 "utils/swap_space.h"
+
+#include <cstdio>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "gtest/gtest.h"
+
+#include "base/unix_file/fd_file.h"
+#include "common_runtime_test.h"
+#include "os.h"
+
+namespace art {
+
+class SwapSpaceTest : public CommonRuntimeTest {
+};
+
+static void SwapTest(bool use_file) {
+ ScratchFile scratch;
+ int fd = scratch.GetFd();
+ unlink(scratch.GetFilename().c_str());
+
+ SwapSpace pool(fd, 1 * MB);
+ SwapAllocator<void> alloc(use_file ? &pool : nullptr);
+
+ SwapVector<int32_t> v(alloc);
+ v.reserve(1000000);
+ for (int32_t i = 0; i < 1000000; ++i) {
+ v.push_back(i);
+ EXPECT_EQ(i, v[i]);
+ }
+
+ SwapVector<int32_t> v2(alloc);
+ v2.reserve(1000000);
+ for (int32_t i = 0; i < 1000000; ++i) {
+ v2.push_back(i);
+ EXPECT_EQ(i, v2[i]);
+ }
+
+ SwapVector<int32_t> v3(alloc);
+ v3.reserve(500000);
+ for (int32_t i = 0; i < 1000000; ++i) {
+ v3.push_back(i);
+ EXPECT_EQ(i, v2[i]);
+ }
+
+ // Verify contents.
+ for (int32_t i = 0; i < 1000000; ++i) {
+ EXPECT_EQ(i, v[i]);
+ EXPECT_EQ(i, v2[i]);
+ EXPECT_EQ(i, v3[i]);
+ }
+
+ scratch.Close();
+}
+
+TEST_F(SwapSpaceTest, Memory) {
+ SwapTest(false);
+}
+
+TEST_F(SwapSpaceTest, Swap) {
+ SwapTest(true);
+}
+
+} // namespace art