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      1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 //
     28 // Tests of the TokenLock class from lock.h
     29 
     30 #include <pthread.h>
     31 #include <stdlib.h>
     32 #include <unistd.h>  // for usleep()
     33 
     34 #include "src/v8.h"
     35 
     36 #include "src/base/platform/platform.h"
     37 #include "test/cctest/cctest.h"
     38 
     39 using namespace ::v8::internal;
     40 
     41 
     42 TEST(VirtualMemory) {
     43   v8::base::VirtualMemory* vm = new v8::base::VirtualMemory(1 * MB);
     44   CHECK(vm->IsReserved());
     45   void* block_addr = vm->address();
     46   size_t block_size = 4 * KB;
     47   CHECK(vm->Commit(block_addr, block_size, false));
     48   // Check whether we can write to memory.
     49   int* addr = static_cast<int*>(block_addr);
     50   addr[KB-1] = 2;
     51   CHECK(vm->Uncommit(block_addr, block_size));
     52   delete vm;
     53 }
     54