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// ---
//
// Author: Craig Silverstein
// This tests the accounting done by tcmalloc. When we allocate and
// free a small buffer, the number of bytes used by the application
// before the alloc+free should match the number of bytes used after.
// However, the internal data structures used by tcmalloc will be
// quite different -- new spans will have been allocated, etc. This
// is, thus, a simple test that we account properly for the internal
// data structures, so that we report the actual application-used
// bytes properly.
#include "config_for_unittests.h"
#include <stdlib.h>
#include <stdio.h>
#include <gperftools/malloc_extension.h>
#include "base/logging.h"
const char kCurrent[] = "generic.current_allocated_bytes";
int main() {
// We don't do accounting right when using debugallocation.cc, so
// turn off the test then. TODO(csilvers): get this working too.
#ifdef NDEBUG
size_t before_bytes, after_bytes;
MallocExtension::instance()->GetNumericProperty(kCurrent, &before_bytes);
free(malloc(200));
MallocExtension::instance()->GetNumericProperty(kCurrent, &after_bytes);
CHECK_EQ(before_bytes, after_bytes);
#endif
printf("PASS\n");
return 0;
}