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1#include <thread>2 3const size_t kAllocSize = 16;4const size_t kInitialNumAllocs = 1 << 10;5const size_t kPeriodicNumAllocs = 1 << 10;6const size_t kNumIterations = 1 << 7;7const size_t kNumThreads = 16;8 9void Thread() {10  char *InitialAllocations[kInitialNumAllocs];11  char *PeriodicaAllocations[kPeriodicNumAllocs];12  for (auto &p : InitialAllocations) p = new char[kAllocSize];13  for (size_t i = 0; i < kNumIterations; i++) {14    for (size_t j = 0; j < kPeriodicNumAllocs; j++) {15      for (auto &p : PeriodicaAllocations) {16        p = new char[kAllocSize];17        *p = 0;18      }19      for (auto p : PeriodicaAllocations) delete [] p;20    }21  }22  for (auto p : InitialAllocations) delete [] p;23}24 25int main() {26  std::thread *Threads[kNumThreads];27  for (auto &T : Threads) T = new std::thread(&Thread);28  for (auto T : Threads) {29    T->join();30    delete T;31  }32}33