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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 <fcntl.h>
     20 #include <sys/stat.h>
     21 #include <sys/types.h>
     22 
     23 #include <cstdio>
     24 
     25 #include "gtest/gtest.h"
     26 
     27 #include "base/os.h"
     28 #include "base/unix_file/fd_file.h"
     29 #include "common_runtime_test.h"
     30 
     31 namespace art {
     32 
     33 class SwapSpaceTest : public CommonRuntimeTest {
     34 };
     35 
     36 static void SwapTest(bool use_file) {
     37   ScratchFile scratch;
     38   int fd = scratch.GetFd();
     39   unlink(scratch.GetFilename().c_str());
     40 
     41   SwapSpace pool(fd, 1 * MB);
     42   SwapAllocator<void> alloc(use_file ? &pool : nullptr);
     43 
     44   SwapVector<int32_t> v(alloc);
     45   v.reserve(1000000);
     46   for (int32_t i = 0; i < 1000000; ++i) {
     47     v.push_back(i);
     48     EXPECT_EQ(i, v[i]);
     49   }
     50 
     51   SwapVector<int32_t> v2(alloc);
     52   v2.reserve(1000000);
     53   for (int32_t i = 0; i < 1000000; ++i) {
     54     v2.push_back(i);
     55     EXPECT_EQ(i, v2[i]);
     56   }
     57 
     58   SwapVector<int32_t> v3(alloc);
     59   v3.reserve(500000);
     60   for (int32_t i = 0; i < 1000000; ++i) {
     61     v3.push_back(i);
     62     EXPECT_EQ(i, v2[i]);
     63   }
     64 
     65   // Verify contents.
     66   for (int32_t i = 0; i < 1000000; ++i) {
     67     EXPECT_EQ(i, v[i]);
     68     EXPECT_EQ(i, v2[i]);
     69     EXPECT_EQ(i, v3[i]);
     70   }
     71 
     72   scratch.Close();
     73 }
     74 
     75 TEST_F(SwapSpaceTest, Memory) {
     76   SwapTest(false);
     77 }
     78 
     79 TEST_F(SwapSpaceTest, Swap) {
     80   SwapTest(true);
     81 }
     82 
     83 }  // namespace art
     84