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      1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
      2 //
      3 // Tests of the TokenLock class from lock.h
      4 
      5 #include <stdlib.h>
      6 
      7 #include "v8.h"
      8 
      9 #include "platform.h"
     10 #include "cctest.h"
     11 
     12 using namespace ::v8::internal;
     13 
     14 
     15 TEST(VirtualMemory) {
     16   OS::SetUp();
     17   VirtualMemory* vm = new VirtualMemory(1 * MB);
     18   CHECK(vm->IsReserved());
     19   void* block_addr = vm->address();
     20   size_t block_size = 4 * KB;
     21   CHECK(vm->Commit(block_addr, block_size, false));
     22   // Check whether we can write to memory.
     23   int* addr = static_cast<int*>(block_addr);
     24   addr[KB-1] = 2;
     25   CHECK(vm->Uncommit(block_addr, block_size));
     26   delete vm;
     27 }
     28