compiler-rt/lib/sanitizer_common/tests/malloc_stress_transfer_test.cpp

   1 #include <thread>
   2
   3 const size_t kAllocSize = 16;
   4 const size_t kInitialNumAllocs = 1 << 10;
   5 const size_t kPeriodicNumAllocs = 1 << 10;
   6 const size_t kNumIterations = 1 << 7;
   7 const size_t kNumThreads = 16;
   8
   9 void 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
  25 int 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 }