v8/test/cctest/test-platform-linux.cc

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#include "src/base/platform/platform.h"
#include "test/cctest/cctest.h"

using OS = v8::base::OS;

namespace v8 {
namespace internal {

TEST(OSReserveMemory) {
  size_t mem_size = 0;
  void* mem_addr = OS::ReserveAlignedRegion(1 * MB, OS::AllocateAlignment(),
                                            GetRandomMmapAddr(), &mem_size);
  CHECK_NE(0, mem_size);
  CHECK_NOT_NULL(mem_addr);
  size_t block_size = 4 * KB;
  CHECK(OS::CommitRegion(mem_addr, block_size, false));
  // Check whether we can write to memory.
  int* addr = static_cast<int*>(mem_addr);
  addr[KB - 1] = 2;
  CHECK(OS::UncommitRegion(mem_addr, block_size));
  OS::ReleaseRegion(mem_addr, mem_size);
}

}  // namespace internal
}  // namespace v8