Tcmalloc Testing

output

kyle@synapse ~/src/malloc_test $  > ./runtime_malloc
Tcmalloc default thread cache size:33554432
Tcmalloc runtime thread cache size:134217728

runtime_malloc.c

#include <iostream>
#include <cstdlib>
#ifdef HAVE_GPERFTOOLS_HEAP_PROFILER_H
#include <gperftools/heap-profiler.h>
#else
#include <google/heap-profiler.h>
#endif

#ifdef HAVE_GPERFTOOLS_MALLOC_EXTENSION_H
#include <gperftools/malloc_extension.h>
#else
#include <google/malloc_extension.h>
#endif

using namespace std;

int main ()
{
  size_t tc_cache_sz;

  tc_cache_sz = 0;
  MallocExtension::instance()->
      GetNumericProperty("tcmalloc.max_total_thread_cache_bytes",
                      &tc_cache_sz);
  cout << "Tcmalloc default thread cache size:" << tc_cache_sz << endl;
  tc_cache_sz = 134217728;
  MallocExtension::instance()->
      SetNumericProperty("tcmalloc.max_total_thread_cache_bytes",
                      tc_cache_sz);
  MallocExtension::instance()->
      GetNumericProperty("tcmalloc.max_total_thread_cache_bytes",
                      &tc_cache_sz);
  cout << "Tcmalloc runtime thread cache size:" << tc_cache_sz << endl;
}
/* EOF */