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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 <gperftools/malloc_extension.h>
#include "gtest/gtest.h"
TEST(CurrentAllocatedBytes, Basic) {
static constexpr char kCurrent[] = "generic.current_allocated_bytes";
size_t before_bytes, after_bytes;
ASSERT_TRUE(MallocExtension::instance()->GetNumericProperty(kCurrent, &before_bytes));
(::operator delete)((::operator new)(200));
ASSERT_TRUE(MallocExtension::instance()->GetNumericProperty(kCurrent, &after_bytes));
ASSERT_EQ(before_bytes, after_bytes);
}