third_party/tcmalloc/chromium/src/tests/thread_dealloc_unittest.cc

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  29
  30 // ---
  31 // Author: Sanjay Ghemawat
  32 //
  33 // Check that we do not leak memory when cycling through lots of threads.
  34
  35 #include "config_for_unittests.h"
  36 #include <stdio.h>
  37 #ifdef HAVE_UNISTD_H
  38 #include <unistd.h>    // for sleep()
  39 #endif
  40 #include "base/logging.h"
  41 #include <gperftools/malloc_extension.h>
  42 #include "tests/testutil.h"   // for RunThread()
  43
  44 // Size/number of objects to allocate per thread (1 MB per thread)
  45 static const int kObjectSize = 1024;
  46 static const int kNumObjects = 1024;
  47
  48 // Number of threads to create and destroy
  49 static const int kNumThreads = 1000;
  50
  51 // Allocate lots of stuff
  52 static void AllocStuff() {
  53   void** objects = new void*[kNumObjects];
  54   for (int i = 0; i < kNumObjects; i++) {
  55     objects[i] = malloc(kObjectSize);
  56   }
  57   for (int i = 0; i < kNumObjects; i++) {
  58     free(objects[i]);
  59   }
  60   delete[] objects;
  61 }
  62
  63 int main(int argc, char** argv) {
  64   static const int kDisplaySize = 1048576;
  65   char* display = new char[kDisplaySize];
  66
  67   for (int i = 0; i < kNumThreads; i++) {
  68     RunThread(&AllocStuff);
  69
  70     if (((i+1) % 200) == 0) {
  71       fprintf(stderr, "Iteration: %d of %d\n", (i+1), kNumThreads);
  72       MallocExtension::instance()->GetStats(display, kDisplaySize);
  73       fprintf(stderr, "%s\n", display);
  74     }
  75   }
  76   delete[] display;
  77
  78   printf("PASS\n");
  79 #ifdef HAVE_UNISTD_H
  80   sleep(1);     // Prevent exit race problem with glibc
  81 #endif
  82   return 0;
  83 }