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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "utils/swap_space.h"
     18 
     19 #include <cstdio>
     20 #include <sys/types.h>
     21 #include <sys/stat.h>
     22 #include <fcntl.h>
     23 #include "gtest/gtest.h"
     24 
     25 #include "base/unix_file/fd_file.h"
     26 #include "common_runtime_test.h"
     27 #include "os.h"
     28 
     29 namespace art {
     30 
     31 class SwapSpaceTest : public CommonRuntimeTest {
     32 };
     33 
     34 static void SwapTest(bool use_file) {
     35   ScratchFile scratch;
     36   int fd = scratch.GetFd();
     37   unlink(scratch.GetFilename().c_str());
     38 
     39   SwapSpace pool(fd, 1 * MB);
     40   SwapAllocator<void> alloc(use_file ? &pool : nullptr);
     41 
     42   SwapVector<int32_t> v(alloc);
     43   v.reserve(1000000);
     44   for (int32_t i = 0; i < 1000000; ++i) {
     45     v.push_back(i);
     46     EXPECT_EQ(i, v[i]);
     47   }
     48 
     49   SwapVector<int32_t> v2(alloc);
     50   v2.reserve(1000000);
     51   for (int32_t i = 0; i < 1000000; ++i) {
     52     v2.push_back(i);
     53     EXPECT_EQ(i, v2[i]);
     54   }
     55 
     56   SwapVector<int32_t> v3(alloc);
     57   v3.reserve(500000);
     58   for (int32_t i = 0; i < 1000000; ++i) {
     59     v3.push_back(i);
     60     EXPECT_EQ(i, v2[i]);
     61   }
     62 
     63   // Verify contents.
     64   for (int32_t i = 0; i < 1000000; ++i) {
     65     EXPECT_EQ(i, v[i]);
     66     EXPECT_EQ(i, v2[i]);
     67     EXPECT_EQ(i, v3[i]);
     68   }
     69 
     70   scratch.Close();
     71 }
     72 
     73 TEST_F(SwapSpaceTest, Memory) {
     74   SwapTest(false);
     75 }
     76 
     77 TEST_F(SwapSpaceTest, Swap) {
     78   SwapTest(true);
     79 }
     80 
     81 }  // namespace art
     82