| // -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- |
| // Copyright (c) 2011, Google Inc. |
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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); |
| } |