1    :  // Copyright 2015 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include "syzygy/testing/laa.h"
  16    :  
  17    :  #include <windows.h>
  18    :  #include "base/logging.h"
  19    :  #include "gtest/gtest.h"
  20    :  #include "syzygy/common/align.h"
  21    :  
  22    :  namespace testing {
  23    :  
  24  E :  size_t GetAddressSpaceSize() {
  25  E :    MEMORYSTATUSEX mem_status = {};
  26  E :    mem_status.dwLength = sizeof(mem_status);
  27  E :    CHECK(::GlobalMemoryStatusEx(&mem_status));
  28    :  
  29    :    // Because of the way the interceptors work we only support 2GB or 4GB
  30    :    // virtual memory sizes, even if the actual is 3GB (32-bit windows, LAA,
  31    :    // and 4GT kernel option enabled).
  32    :    static const uint64 k1GB = 1UL << 30;
  33  E :    uint64 mem_size = ::common::AlignUp64(mem_status.ullTotalVirtual, 2 * k1GB);
  34  E :    mem_size /= k1GB;
  35  E :    return static_cast<size_t>(mem_size);
  36  E :  }
  37    :  
  38  E :  bool ShouldSkipTest(size_t required_address_space_size) {
  39  E :    if (GetAddressSpaceSize() == required_address_space_size)
  40  i :      return false;
  41    :    const ::testing::TestInfo* const test_info =
  42  E :        ::testing::UnitTest::GetInstance()->current_test_info();
  43    :    fprintf(stderr, "WARNING: %s.%s requires %d GB memory model, skipping.\n",
  44    :            test_info->test_case_name(), test_info->name(),
  45  E :            required_address_space_size);
  46  E :    return true;
  47  E :  }
  48    :  
  49    :  }  // namespace testing